08 21 TORQUE LIMITING COUPLINGS
www.jbj.co.uk/ .html torque-limiting-couplings USP: Analyse industry applications & provide proficient solutions to the mechanical power transmission and hydraulics industries. PRODUCT SPECIFICATION: team of design engineers to assist in design process, simple or complex, standard or bespoke. PROMPT PRODUCT SUPPLY: large stocks for next day delivery on many items. : full machining services for bespoke designs and prompt turnaround. MACHINE SHOP quality products for mechanical & fluid power: www.jbj.co.uk High quality mechanical and fluid power products are always available straight from our comprehensively stocked warehouse, but, we are more than that! If you need more, be it the smallest drive component through to complex drive line component packages, then speak to our experienced sales team who will provide a solution based upon your application requirements. BELLHOUSINGS / COUPLINGS » bellhousings » wet mount bellhousing (NEW) » spider couplings » gear couplings » all steel gear couplings (ATEX) » 'JXL' couplings (ATEX) » tyre couplings (ATEX) » torque limiting couplings » torsional couplings » magnetic couplings (ATEX) » disc couplings (ATEX) » grid couplings » S-flex couplings - - - - - - - - - - - - - - » hydraulic adaptors » dampers » foot brackets CLUTCHES / GEARBOXES » clutches & gearboxes » planetary gearboxes » splitter gearboxes » power take-off units PUMPS / MOTORS » gear pumps » 2 stage gear pumps » helical gear pumps Elika® » internal gear pumps » load sensing gear pumps » vane pumps » screw pumps » hydraulic motors (ATEX) » axial piston motors (ATEX) » gear motors » pneumatic motors (ATEX) » pneumatic starters FLANGES / SEALS » port flanges / pipe flanges » 'QM' replaceable seal FLOW / HYDRAULIC PRESSURE » flow dividers » mini power packs » pressure intensifiers COOLING / HEAT EXCHANGE » air - oil coolers » off-line cooling » bellhousing coolers » water - oil coolers » plate heat exchangers RESERVOIRS / LEVEL INDICATORS » fluid reservoirs / tanks » fluid level indicators » hygroscopic breathers » fluid power accessories MISCELLANEOUS » hydraulic generator (NEW)
Description Applications DELTASeries DA Standard » Torque settings available from 0.5 to 23.000 Nm. » Stepless adjustable torque. » Long life due to very little wear. » Surface protected by galvanizing and yellow cromatizing. » Recycling equipment. » Materials handling equipment. » power transmission equipment. » Textile machines. » Transmission motors. » General power transmission equipment. DELT ASeries DA withSprocket » Torque Limiter with sprocket as unit. » Sprockets with number of teeth and pitch according to customer’s request (see page 7). » Automatic equipment » Door and gate drives » Adjustment drives » Belt drives LT ASeries DA MAX. » Torque Limiter designed for wide drive parts in long version. » For double and triple sprockets as well as for rubber belt wheels. » Can be supplied complete with sprocket or belt wheels. » Belt wheels. » Multiple chamfer v-belt pulley. » Multiple chain drives. » General power transmission. » Materials handling equipment. » power transmission equipment. » Mechanical equipment. LT ASeries DA Spidex » Torque Limiter for protection against overload between two shafts. »Torsionally flexible torque limiter with allowance for axial displacement. » Variable elasticity due to different Shore Hardness of the elastic part. » General mechanical design. » Pumps. » Power transmission motors. » Belt drives. DELT ASeries DA Dentex » Torsionally rigid torque limiting shaft to shaft coupling. » Large axial, radial and angle flexibility due to double crowned teeth hubs and involute geared sleeve. » Axially assemble. » General mechanical design. » Design of drives of low demands. » Low number of revolutions. » High axial, radial and angular deviations. DELT ASeries DA with Chain Coupling » Torque Limiter with chain coupling for high temperature areas and other high demand for the connection of two shafts. » Small axial, radial and angular deviations possible. » Temperature up to 280 °C possible. » Low speed. » General mechanical design. » Materials handling equipment » power transmission equipment. » When exposed to high demand and high temperature. DELFLEX Series DA » Torque Limiter for protection against overload between two shafts. » Allows for axial, radial and angular misalignment. » Considerable, angular elasticity, because of 60° shore hardness of the elements, this results in strong shock and vibration dampening. » General mechanical design. » Pumps. » Suited for internal combustion engines. » General power transmission. Page 3–5 Page 5–6 Page 7 Page 8 Page 9 Page 10 Page 11 Torque Limiting Couplings Sliding Hubs and Safety Clutches, Series DA with LF Torsional Coupling www.jbj.co.uk/torque-limiting-couplings.html 1 #DriveLineHarmony The details contained within this catalogue are reproduced in accordance with the latest information at publication of this catalogue. Errors & Omissions Excepted Last update: 18/08/2021
» Torque Limiters up to 23.000 Nm. » Standard version galvanized and yellow cromatized. » Limitation of torque prevents high shock loads. » Adjustable torque settings. » Friction discs free of asbestos. » Standard bushing for extended durability. » Change of torque settings, even if assembled. » Rust and acid resistant version available on request. » Special version with needle bearing available on request. Parts of the DELTATorque Limiter Series DA Hub Friction disc Centre sliding bush Friction disc Pressure ring Disc spring Safety plate Adjustment nut Adjustment bolts Adjustment screw for DA 6-DA 10 Torque Limiting Couplings DELTA Torque Limiter Series DA www.jbj.co.uk/torque-limiting-couplings.html 2 #DriveLineHarmony
1 TFD 2 TFD 1 TF 1 TFD 2 TFD 2 TF 3 TF Single layer Two layers Three layers DA 00 DA 0 - 5 DA 6 - 10 DA 0 - 5 DA 6 - 10 DA 01 - 5 Torque Limiting Couplings DELTA Torque Limiter Series DA Disc Spring Layers For torque limiters three different layers of disc springs are possible. a) Disc springs in single layer for torque limiters DA 00 to DA 8 b) Disc springs in two layers for torque limiters DA 00 to DA 8 c) Disc springs in three layers for torque limiters DA 1 to DA 5 If case c) is used, the width of the driving part is reduced and it should only be used when the dimensions of the construction are limited. Special adjustment unit is necessary. Special adjustment nuts The DELTA DA torque limiter 0 to 5 requires in the lowest torque ranges and/or at higher revolutions a special adjustment nut with tangential clamping. Friction discs The friction discs of the torque limiters are free of asbestos. Special friction discs for long slippage and rust-free surfaces are available on request. Bushing for centring drive part The centring bush is manufactured from bronze for it's slide and wear properties.. All torque limiters are equipped with the longest bushing. Shorter bushing for smaller driven parts must be specially ordered. The calculation of the length of the bushing is as followed: length of bushing = 1,5 x s1 + b1 (see dimensions) Possible application of disc spring Experience shows that wear is less when a single disc spring is used, when double springs are used there is more wear and when triple springs are used , wear is much greater. Generally the time of wear of a friction disc depends on the adjusted torque, the rotational speed, the time of slippage and the frequency of slippage. Example Torque limiter DA 3 Thickness of drive part b = 12mm Torque limiter DA 3 Thickness of friction disc s = 4mm 1,5 x 4 + 12 = 18 mm length of bushing When ordering if no thickness of the driven part has been given, maximum length will be supplied. www.jbj.co.uk/torque-limiting-couplings.html 3 #DriveLineHarmony
Z M Number of adjustment screws Z Number of adjustment screws Z d2 B b s 1 1 L L RN RN D DN d1 g m M d2 B b s 1 1 Number of adjustment screws Type DA 00 to 0 Type DA 01 to 5 Type DA 6 to 10 m D d1 g D D d N 1 B g b s 1 1 LRN d2 M m Torque Limiting Couplings DELTA Torque Limiter Series DA dimensions Order example: DA 3 1 TF 10 Ø 30 H7 8 P9 Type Size Disc spring Width of mounting part Bore Keyway Type DA size Revs max. [1-min] Torque disc spring [Nm] Dimensions [mm] D D d * 1 n B Width of driving part b1 bush length m M Z single double triple** Pilot bore bore max. min. max. min. max. 1 2 3 Type DA 00 to 0 00 10000 0,5–5 1–10 – 3,7 10 30 30 21 8,5 2 6 6 10 2,5 31 3 M4 M4 3 0 8500 2–10 4–20 – 5,7 20 45 45 35 8,5 2 6 6 10 2,5 33 3 M4 M4 6 Type DA 01 to 5 01 6600 5–35 10–70 60–105 10 22 58 40 40 16 3 8 8 13 3 45 4 M5 M4 6 1 5600 20–75 40–150 130–200 10 25 68 45 44 17 3 10 8 15 3 52 6 M5 M5 6 2 4300 25–140 50–280 250–400 14 35 88 58 58 19 4 12 9 17 3 57 6 M6 M6 6 3 3300 50–300 100–600 550–800 18 45 115 75 72 21 5 15 11 21,5 4 68 6 M6 M8 6 4 2700 90–600 180–1200 1100–1600 24 55 140 90 85 23 6 18 12 24,5 4 78 6 M8 M8 6 5 2200 280–800 800–1600 1400–2100 28 65 170 102 98 29 8 20 16 28 5 92 8 M8 M8 6 Type DA 6 to 10 6 1900 300–1200 600–2400 – 38 80 200 120 116 31 8 23 16 31 5 102 8 M8 M20 8 7 1600 600–2200 1200–4400 – 45 100 240 150 144 33 8 25 16 33 5 113 8 M10 M20 12 8 1300 900–3400 1800–6800 – 58 120 285 180 170 35 8 25 16 33 5 115 8 M10 M20 16 9 1100 1800–5300 4000–10500 – 64 140 350 225 237 53 12 28 21 37 6 162 9 M12 M20 20 10 900 4000–9000 9000–23000 – 78 160 415 255 270 60 15 35 24 44 6 185 9 M12 M20 20 * Dimension d1, produced for bore H8. ** Only to be used when design has limited dimensions. Bore d2 LRN s1 g www.jbj.co.uk/torque-limiting-couplings.html 4 #DriveLineHarmony
DELTA Size max. Revolution [1-min] Torque [Nm] Dimensions [mm] D D N B s 1 1 TF 2 TF 3 TF * Pilot bore Bore max. M 00 10000 0,5–5 1–10 – 4,8 10 30 30 8,5 2,5 31 3 M4 0 8500 2–10 4–20 – 5,7 20 45 45 8,5 2,5 33 3 M4 01 6600 5–35 10–70 60–105 10 22 58 40 16 3 45 4 M5 1 5600 20–75 40–150 130–200 10 25 68 45 17 3 52 6 M5 2 4300 25–140 50–280 250–400 14 35 88 58 19 3 57 6 M6 3 3300 50–300 100–600 550–800 18 45 115 75 21 4 68 6 M6 4 2700 90–600 180–1200 1100–1600 24 55 140 90 23 4 78 6 M8 5 2200 280–800 800–1600 1400–2100 28 65 170 102 29 5 92 8 M8 6 1900 300–1200 600–2400 – 38 80 200 120 31 5 102 8 M6 7 1600 600–2200 1200–4400 – 45 100 240 150 33 5 113 8 M10 8 1300 900–3400 1800–6800 – 58 120 285 180 35 5 115 8 M10 Order example: DA 1 2 TF 08 B1, z = 24 Ø 20 6 P9 Type Size Disc spring layer Sprocket Bore Keyway * The width of the driving part is reduced. LRN DN D M g s1 d2 B LRN Torque Limiting Couplings DELTA Series DA with Sprocket Bore d2 g www.jbj.co.uk/torque-limiting-couplings.html 5 #DriveLineHarmony
Torque Limiting Couplings Selection of Sprocket Wheels Size of sliding hub Sprocket wheel – Pitch x Width Dimensions [mm] 3/8" x 7/23" 1/2" x 5/16" 5/8" x 3/6" 3/4" x 7/16" 1" x 17,02mm 1 1/4" x 3/4" 1 1/2" x 1" 1 3/4" x 11/4" 2" x 1 1/4" Teeth width [mm] 5.3 7.2 9.1 11.1 16.2 18.5 24.1 29.4 29.4 00 13 11x 10x – – – – – – 21 31 6 0 19 15x 13x – – – – – – 35 46 6 01 23 18 16x 13x – – – – – 40 59 8 1 26 21 17 15x 12x – – – – 44 68 10 2 33 26 21 18 14x – – – – 58 89 12 3 – 32 27 23 17x 15x – – – 72 116 15 4 – – 32 27 21 17x – – – 85 142 18 5 – – 38 32 24 20 18x 15x 15x 98 172 20 6 – – – 37 28 23 20x 17x 17x 116 202 23 7 – – – 43 33 27 23 20x 19x 144 242 25 8 – – – – 39 32 27 24x 21x 170 287 25 9 – – – – 47 38 35 30x 25x 237 353 28 10 – – – – – 45 38 38 30 270 418 34 06 B1 08 B1 10 B1 12 B1 16 B1 20 B1 24 B1 28 B1 32 B1 m d1 d2 d 1 For best torque adjustment it is recommended to have the sprocket ground on both sides. d1 d2 m » Sprockets for roller chains DIN 8187 ISO R606B, sprockets for roller chains DIN 8188 on request. » When using double or triple sprockets the smallest number of teeth should be chosen 1 to 2 teeth larger. » Number of teeth marked with x have to be turned down evenly on both sides or have to be turned out (see also width of torque limiter). Note: When installing the sprocket the bushing has to be fitted. Length of bushing = sprocket + 1,5 x thickness of friction disc (see also torque limiters) Material of sprockets: C45 or other hardened steels. Hardness of teeth surface HRC 56 ± 2 www.jbj.co.uk/torque-limiting-couplings.html 6 #DriveLineHarmony
DELTA DA MAX. Size max. Revolution [1-min.] Torque [Nm] Dimensions [mm] Bore d2 D D B N bmax 1 TF 2 TF 3 TF** Pilot bore Bore max. 0 8500 2–10 4–20 – 5,7 20 45 – 8,5 25 35 50 01 6600 5–35 10–70 60–105 10 22 58 40 16 33 40 70 1 5600 20–75 40–150 130–200 10 25 68 45 17 43 44 85 2 4300 25–140 50–280 250–400 14 35 88 58 19 54 58 100 3 3300 50–300 100–600 550–800 18 45 115 75 21 62 72 115 4 2700 90–600 180–1200 1100–1600 24 55 140 90 23 90 85 154 5 2200 280–800 800–1600 1400–2100 28 65 170 102 29 125 98 200 Order example: DA MAX. 1 2 TF 35 Ø 20 Type Size Disc spring layer Width of driving part b Bore D DN d1 Lmax d2 bmax B Torque Limiting Couplings DELTA Series DA MAX. DELTA DA MAX. » Torque Limiter designed for wide drive parts in long version. » Suitable for double and triple sprockets, timing belt pulley, V-belt pulley. » Available as package unit with sprocket, V-belt, and timing belt pulley. DELTA DA max . assembled with double sprocket as package available. Lmax d * 1 * Dimension d1 manufactured for bore H8. ** Only to be used when design has limited dimensions. www.jbj.co.uk/torque-limiting-couplings.html 7 #DriveLineHarmony
Size torque limiter Size Torque [Nm] Torque [Nm] Dimensions [mm] 95/98 Shore A Bore d2 L 1 TF 2 TF 3 TF Pilot bore Bore max. max. 00 14 0,5–5 1–10 – 12,5 25 4,8 10 16 59 44 31 13 11 35 30 0 19 2–10 4–20 – 17 34 5,7 20 25 78 63 33 16 25 37 40 01 24 5–35 10–70 60–105 60 120 10 22 35 98 80 45 18 30 50 55 1 28 20–75 40–150 130–200 160 320 10 25 40 113 98 52 20 35 58 65 2 38 25–140 50–280 250–400 325 650 14 35 48 133 120 57 24 45 64 80 3 48 50–300 100–600 550–800 525 1050 18 45 62 166 162 68 28 56 82 105 4 75 90–600 180–1200 1100–1600 1920 3840 24 55 95 205 185 78 40 85 80 106 5 90 280–800 800–1600 1400–2100 3600 7200 28 65 110 259 260 92 45 100 114 200 6 100 300–1200 600–2400 – 4950 9900 38 80 115 290 285 102 50 110 130 225 7 110 600–2200 1200–4400 – 7200 14400 45 100 125 317 330 113 55 120 142 255 8 140 900–3400 1800–6800 – 10000 20000 58 120 160 372 410 115 65 155 152 320 Order example: DELTADA 1 2 TF Ø 20 Jaw Coupling 28 98 Sh A Ø 25 Type Size Disc spring layer Bore limiter side (d2) Type Size Shore hardness DA Spider / Jaw Coupling L DH d l1 l2 E LRN d2 DA Torque Limiting Couplings DELTA Series DA with Spider Coupling DELTA DA with Spider Coupling » Torque Limiter for protection against overload between two shafts. » Torsionally flexible torque limiter with allowance for axial displacement. » Elements available in different shore hardnesses. TKN Tkmax DA LRN E I1 I2 DH Bore d For details of spider couplings, including permitted values for axial, radial and angular deviations, see yellow, Pump Drive Components catalogue, pages 4 to 10: www.jbj.co.uk/e-publications/Pump-drive-components/4/index.html Bore coupling side (d) www.jbj.co.uk/torque-limiting-couplings.html 8 #DriveLineHarmony
DELTA DA Size Gear Coupling Size DELTA DA Torque [Nm] Gear Coupling Torque [Nm] Dimensions [Nm] 1 TF 2 TF 3 TF 00 19 0,5–5 1–10 – 16 32 3,7 10 19 0 28 2–10 4–20 – 45 90 5,7 20 28 01 38 5–35 10–70 60–90 80 160 10 22 38 1 48 20–75 40–150 130–200 140 280 10 25 48 2 65 25–140 50–280 250–400 380 760 14 35 65 Order example: DELTA DA 1 1 TF Gear Coupling 48 Ø 20 Ø 25 Type Size Disc spring layer Type Size Bore coupling side (d) D D d A 1 l L 1 RN d2 E L Bore (d2) Torque Limiting Couplings DELTA Series DA with Gear Coupling For details of gear coupling, including permitted values for axial, radial and angular deviations, see yellow, Pump Drive Components catalogue, pages 26 to 32: www.jbj.co.uk/e-publications/Pump-drive-components/26/index.html DELTA DA with Gear Coupling » Torsionally rigid torque limiting shaft to shaft coupling. » Large axial, radial and angle flexibility due to double universal joints. » Axially assemble. TKN Tkmax. Pilot bore Max. bore Bore d2 Bore d Max. 48 66 83 95 132 DA 30 44 58 67 95 D1 58 75 83 98 124 L 31 33 45 52 57 LRN 2,0 2,0 2,5 2,5 3 E 25 40 35,5 45,5 64 L1 www.jbj.co.uk/torque-limiting-couplings.html 9 #DriveLineHarmony
DELTA DA RKC Size Torque [Nm] Displacement 1 TF 2 TF 3 TF Radial [mm] Angle [Degree] 00 0,5–5 1–10 – 0,15 0,50 0 2–10 4–20 – 0,20 0,50 01 5–35 10–70 60–105 0,30 0,75 1 20–75 40–150 130–200 0,35 0,80 2 25–140 50–280 250–400 0,35 0,80 3 50–300 100–600 550–800 0,40 0,80 4 90–600 180–1200 1100–1600 0,50 0,90 5 280–800 800–1600 1400–2100 0,50 0,90 6 300–1200 600–2400 – 0,50 0,90 7 600–2200 1200–4400 – 0,60 1,00 8 900–3400 1800–6800 – 0,60 1,00 DELTA DA RKC Size Sprocket Size/Teeth Pilot bore (mm) Bore max. (mm) Pilot bore (mm) Bore max. (mm) 00 06B-19 4,8 10 6 25 67 30 40 55 31 22 1,5 0 06B-22 5,7 20 7,5 35 76 45 55 57 33 22 1,5 01 06B-22 10 22 11 50 102 58 75 75 45 25 4 1 08B-22 10 25 11 60 117 68 85 90 52 33 5 2 10B-24 14 35 18 70 138 88 105 100 57 34 7 3 12B-28 18 45 18 100 188 115 150 115 68 38 7 4 16B-23 24 55 22 120 218 140 170 135 78 50 7 5 16B-28 28 65 22 150 250 170 200 155 92 56 9 6 16B-33 38 80 24 180 285 200 230 180 102 70 10 7 20B-30 45 100 48 200 335 240 270 200 113 75 10 8 20B-38 58 120 58 250 415 285 345 205 115 80 10 Order example: DELTA DA RKC 1 2 TF Ø 20 Ø 25 Type Size Disc spring layer Bore sliding hub (D2) Bore sprocket (D1) DA DK D2 D1 D A L L L KR RN Torque Limiting Couplings DELTA Series DA with Chain Coupling RKC DELTA DA RKC Torque Limiter couplings are strong and uncomplicated overload protections for the connection of two shafts. They consist of a normal torque limiter with sprocket built in and an additional sprocket with hub. The two sprockets are connected with a double roller chain type DIN 8187 ISO R606B, tight but slightly elastic. The two ends of the chain are connected with a connecting link. DELTA DA RKC Torque Limiters are used as overload protection when a small parallel or angle deviation of the connecting shafts cannot be excluded. DELTA DA RKC Torque Limiters can be applied in a horizontal or vertical position. The operating temperature are between –20 °C and +250 °C. Maximum temperatures of +350 °C are possible. Sliding hub D1 Sprocket D2 Dimensions (mm) DA D DK L LRN LKR A www.jbj.co.uk/torque-limiting-couplings.html 10 #DriveLineHarmony
Order example: DELTA Size Torque Limiter Torsional Coupling Dimensions (mm) Pilot bore (mm) Bore max. d (mm) 1 DELFLEX Coupling size Coupling Hub d 2 (mm) D D1 D2 L LRN LN DA 00 4,8 10 LF1 19 56 30 30 57 31 24 2 DA 0 5,7 20 LF2 26 85 45 40 65 33 28 4 DA 01 10 22 LF8 38 120 58 60 91 45 42 4 DA 1 10 25 LF16 48 150 68 70 108 52 50 6 DA 2 14 35 LF16 48 150 88 70 113 57 50 6 DA 3 18 45 LF30 65 200 115 100 142 68 66 8 DA 4 24 55 LF90 85 260 140 125 166 78 80 8 DA 5 28 65 LF90 85 260 170 125 180 92 80 8 DA 6 38 80 LF250 105 340 200 160 210 102 100 8 D L D d d D 2 2 1 1 A LN LRN Details of LF torsional couplings can be found in the Torsional Couplings catalogue at: www.jbj.co.uk/PDF/TorsionalCouplings.html LF1-2 LF8, 16, 30, 90 LF250 Torque Limiting Couplings DELTA Series DA with LF Coupling (highly elastic) DELTA DA-LF 3 2TF Ø 20 6 P9 Ø 25 8 P9 Type Size Disc spring layer Bore torque limiter (d1) Keyway torque limiter Bore coupling (d2) Keyway coupling hub DELTA DA with LF Torsional Coupling DELFLEX Torque Limiter couplings series DA are highly elastic safety couplings with stepless adjustable torque for the connection of two shafts. The especially formed rubber element of the elastic coupling has a large capability of deflection, does act against vibration torque and absorbs shocks. DELTA Size Torque (Nm) Revolution max. RPM Allowable Continuous Vibratory Torque Tkw (nm) Displacement Axial (mm) Radial (mm)* Angle (Degrees)* 1 TF 2 TF 3 TF DA 00 0,5–5 1–10 – 10.000 5 2 1,5 3 DA 0 2–10 4–20 – 8.000 10 3 1,5 3 DA 01 5–35 10–70 60–105 6.500 40 4 2,0 3 DA 1 20–75 40–150 130–200 5.600 80 5 2,0 3 DA 2 25–140 50–280 250–400 4.300 100 5 2,0 2 DA 3 50–300 100–600 550–800 3.300 300 5 2,0 2 DA 4 90–600 180–1200 1100–1600 2.700 450 5 2,0 3 DA 5 280–800 800–1600 1400–2100 2.200 700 5 2,0 2 DA 6 300–1200 600–2400 – 1.900 1250 5 2,0 2 * The permitted shaft misalignment depends on the operating speed. As the speed increases, lower shaft misalignment values are permitted. A www.jbj.co.uk/torque-limiting-couplings.html 11 #DriveLineHarmony
The cost-effective alternative for easy torque limiting Torque Limiting Couplings DELTA Series DB with DB-RKC Description Applications DELTA Series DB Standard » Automatic equipment » Door and gate drives » Adjustment drives » Belt drives DELTA Series DB with chain coupling DELTA Series DB with sprocket » Torque Limiters up to 1360 Nm torque » Standard version zinc plated and chromatized » Torque limitation for torque from 0,5 - 1360 Nm » Friction disc free of asbestos » Standard centering bushing - long durability » Recycling equipment » Materials handling equipment » Power transmission equipment » Textile machines » Transmission motors » General power transmission equipment » Torque Limiter with sprocket as unit » Sprockets with number of teeth and pitch according to customer‘s request (see page 16) » Torque Limiter as chain coupling for high temperature areas and other high demand for the connection of two shafts. » Small axial, radial and angular deviations possible » Temperature up to 280 °C possible » Low to average revolutions » General mechanical design » Materials handling equipment » Power transmission equipment » When exposed to high demand and high temperature www.jbj.co.uk/torque-limiting-couplings.html 12 #DriveLineHarmony
Torque Limiting Couplings DELTA Series DB Torque Limiter Type Torque Max. Revolution (1-min.) Bore Dimensions (mm) D d DN 1 -0,05 b S1 b1 max. L SW m M min. (Nm) max. (Nm) Pilot bore max. DB 120-1 0,5 5 10000 3,7 10 30 – – 21,00 8,5 2,5 6 4,2 31 27 4 – DB 120-2 1 10 DB 180-1 2 10 8500 5,7 22* 45 – – 34,00 8,5 2,5 7 4,2 33 41 4 – DB 180-2 4 20 DB 250-1 7 34 3000 10H7 24 64 – 45 41,33 16 4 9 14 48 50 5 – DB 250-2 14 68 DB 350-1 20 90 2500 13H7 30 90 – 59 49,28 19 4 16 21 62 60 6 – DB 350-2 40 180 DB 500-1 50 300 1600 19H7 45 127 92 75 73,10 21 4 16 21 76 – 8 M8 x 16 DB 500-2 100 600 DB 700-1 115 690 1200 24H7 65 178 133 104,88 25 5 28 35 98 – 10 M10 x 16 DB 700-2 230 1360 DB 120–180 D D2 m D1 B L b1 DB 250–350 D DN D2 D1 L m DB 500–700 3 Adjustment bolts D D d D 2 N D1 L m M SW SW length of the bushing* Hub Friction facing Bushing Pressure plate Disc spring Lock washer Hex adjustment nut Pilot plate Bolt adjustment nut Adjustment bolt DB 120–350 DB 500–700 • Torque Limiters up to 1.360 Nm. • Standard version galvanized and yellow cromatized. • Limitation of torque prevents high shock loads. • Friction discs free of asbestos. • Standard bushing for extended durability. * The calculation of the length of the bushing is as followed: length of bushing = 1,5 x s1 + b1 Parts of the DELTA Torque Limiter Series DB 120 Friction facing S1 B b1 S1 B b1 S1 D2 D1 * Feather keyway according to DIN 6885-3 * * * * www.jbj.co.uk/torque-limiting-couplings.html 13 #DriveLineHarmony
Torque Limiting Couplings DELTA Series DB with Sprocket Order example: DB 250 2 TF 08 B1, z = 24 Ø 20 H7 6 P9 Type Size Disc spring layer Sprocket Bore Keyway Type Torque Dimensions (mm) D DN D1 B s1 LR N m min. (Nm) max. (Nm) min. max. DB 120-1 0,5 5 3,7 10 30 – 21,05 8,5 2,5 31 M 4 DB 120-2 1 10 DB 180-1 2 10 5,7 22* 45 – 34,05 8,5 2,5 33 M 4 DB 180-2 4 20 DB 250-1 7 34 9,5 24* 64 45 41,33 16 4 48 M 5 DB 250-2 14 68 DB 350-1 20 90 13 30* 90 59 49,28 19 4 62 M 6 DB 350-2 40 180 DB 500-1 50 300 19 45* 127 75 73,10 21 4 76 M 8 DB 500-2 100 600 DB 700-1 115 690 24 65* 178 120 104,88 25 5 98 M 10 DB 700-2 230 1360 D S1 DN D1 B LRN D2 * Feather keyway according to DIN 6885-3 m Bore D2 www.jbj.co.uk/torque-limiting-couplings.html 14 #DriveLineHarmony
Torque Limiting Couplings Selection of Sprocket Wheels m d1 d2 d 1 Size of sliding hub Sprocket wheel – Pitch x Width Dimensions [mm] 3/8" x 7/23" 1/2" x 5/16" 5/8" x 3/6" 3/4" x 7/16" 1" x 17,02mm 1 1/4" x 3/4" 1 1/2" x 1" 1 3/4" x 1 1/4" 2" x 1 1/4" Teeth width (mm) 5,3 7,2 9,1 11,1 16,2 18,5 24,1 29,4 29,4 DB 120 13 11 10x – – – – – – 21,0 31 6 DB 180 19 15 13x – – – – – – 39,0 46 7 DB 250 25 20 16x 14x 11x – – – – 41,35 65 9 DB 350 33 26 22 18 14 12x – – – 49,30 91 16 DB 500 – 35 29 25 19 16x – – – 73,10 129 16 DB 700 – – 39 33 25 21 18 16x 15x 104,3 180 28 06 B1 08 B1 10 B1 12 B1 16 B1 20 B1 24 B1 28 B1 32 B1 d * 1 d2 m » Sprockets for roller chains DIN 8187 ISO R606B, Sprockets for roller chains DIN 8188 on request. » When using double or triple sprockets the smallest number of teeth should be chosen 1 to 2 teeth larger. » Number of teeth marked with x have to be turned down evenly on both sides or have to be turned out (see also width of torque limiter) Attention: When installing sprocket the bushing has to be fitted. Length of bushing = sprocket + 1.5 x thickness of friction disc (see also torque limiters) Material of sprockets: C45 or other hardened steels. Hardness of teeth surface HRC 56 ± 2 For best torque adjustment it is recommended to have the sprocket ground on both sides. www.jbj.co.uk/torque-limiting-couplings.html 15 #DriveLineHarmony
DELTA DB RKC Size DB 120-1 RKC DB 120-2 RKC DB 180-1 RKC DB 180-2 RKC DB 250-1 RKC DB 250-2 RKC DB 350-1 RKC DB 350-2 RKC DB 500-1 RKC DB 500-1 RKC DB 700-1 RKC DB 700-2 RKC Torque (Nm) Displacement min. max. Radial (mm) Angle (Degrees) 0,5 5 0,15 0,5 1 10 0,15 0,5 2 10 0,2 0,5 4 20 0,2 0,5 7 34 0,3 0,75 14 68 0,3 0,75 20 90 0,35 0,75 40 180 0,35 0,75 50 300 0,4 0,75 100 600 0,4 0,75 115 690 0,5 0,75 230 1360 0,5 0,75 Order example: Torque Limiting Couplings DELTA Series DB with Chain Coupling RKC DELTA DB RKC Torque Limiter couplings are strong and uncomplicated overload protection for the connection of two shafts. They consist of a normal Torque Limiter series DB with sprocket built in and an additional sprocket with hub. The two sprockets are connected with a double roller chain type DIN 8187 ISO R606B, tight but slightly elastic. The two ends of the chain are connected with a connecting link. DELTA DB RKC Torque Limiters are used as overload protection when a small parallel or angle deviation of the connecting shafts cannot be excluded. DELTA DB RKC Torque Limiters can be applied in a horizontal or vertical position. The operating temperature are between –20°C and +250°C. Maximum temperatures of +350°C are possible. D D D A K LRN D1 L A LKR D2 DELTA DB RKC Size Sprocket Size/Teeth Torque limiter Sprocket Dimensions [mm] Pilot bore Bore max. Pilot bore (mm) D2 Bore max. (mm) DB 120-1 RKC 06B-19 3,7 10 6 25 66 30 DB 120-2 RKC 06B-19 3,7 10 6 25 66 30 DB 180-1 RKC 06B-22 5,7 22* 7, 450 76 45 DB 180-2 RKC 06B-22 5,7 22* 7, 450 76 45 DB 250-1 RKC 08B-22 10 24* 11 50 102 64 DB 250-2 RKC 08B-22 10 24* 11 50 101 64 DB 350-1 RKC 10B-24 13 30* 1 80 137 90 DB 350-2 RKC 10B-24 13 30* 1 80 136 90 DB 500-1 RKC 12B-28 19 45* 2 1210 188 127 DB 500-1 RKC 12B-28 19 45* 2 1210 188 127 DB 700-1 RKC 16B-28 24 65* 2 14 0 251 178 DB 700-2 RKC 16B-28 24 65* 2 14 0 251 178 * Feather keyway according to DIN 6885-3 40 54 31 21,5 1,5 40 54 31 21,5 1,5 55 56 33 21 1,5 55 56 33 21 1,5 75 76 48 22 5,5 75 76 48 22 5,5 105 103 62 34 6,0 105 103 62 34 6,0 150 120 76 38 6,0 150 120 76 38 6,0 200 167 98 56 13,0 200 167 98 56 13,0 DA D DK L LRN LKR A DELTA DB RKC 250 2 TF Ø 20 6 P9 Ø 25 8 P9 Type Size Disc spring layer Bore torque limiter (D1) Keyway torque limiter Bore sprocket (D2) Keyway sprocket www.jbj.co.uk/torque-limiting-couplings.html 16 #DriveLineHarmony
Assembly and Function At assembly the bushing ➌ and a friction disc ➋ will be put first onto the hub ➊. Next the driven part (sprocket, belt pulley or in couplings a flange) will be put onto the bushing. It must be observed that at least half the thickness of the friction disc is left on the bushing to permit enough support for the second friction disc and room for wear. After this the pressure ring ➍ , the disc spring ➎, the safety disc ➏ and the adjustment nut ➐ with adjustment screws ➑ will be assembled. After the torque has been adjusted the installed driven part will slip when overload occurs. Attention:All parts of the torque limiter, especially the driven part must be absolutely free of fat and oil. CentringBushing A bronze centring bush is used for ease of movement and good wear properties. All the Delta DA range of torque limiters are equipped with the longest possible glide bushing. Shorter bushings for shorter driven parts must be specially ordered or cut to length correspondingly. The calculation of bushing length is as follows: Length of bushing = 1.5 x S 1 + b 1 (see dimensions) Example DELTATorque Limiter DA3 Width of driven part for example b1 = 12mm Friction disc thickness S1 = 4mm 1.5 x 4 + 12 = 18mm lenght of bushing (Z-Bu) If no width of driven part is given when ordered, bushing will be supplied inmaximum length. DELTA DA Size 00 0 01 1 2 3 4 5 6 7 8 Length of Bushing 4,2 10 13 15 17 21,5 24,5 28 31 33 33 Hub Friction disc Centre sliding bush Friction disc Pressure ring Disc spring Safety plate Adjustment nut Adjustment bolts Adjustment screw for DA 6-DA 10 www.jbj.co.uk/torque-limiting-couplings.html 17 #DriveLineHarmony Torque Limiting Couplings Assembly & Function 1 2 3 4 2 6 5 7 8 9 s1 b1 Z-Bu
4 6 7 8 Markings shown in perfect adjustment pre assembled Torque adjusted TorqueAdjustments DA00 - DA5 On the face side of the pressure ring ➍ and on the outer side of the adjustment nut ➐ are markings. These are necessary for the adjustment of the torque as follows. To begin with, the adjustment screws ➑ are being screwed out of the nut so far, that they do not stand out. After this the adjustment nut ➐ will be screwed hand tight against the safety disc ➏. At the same time the markings on the adjustment nut ➐ will be matched with the nearest marking on the pressure ring. ➍ Now the adjustment screws ➑ are being tightened completely into the adjustment nut ➐ and the maximum torque is obtained. If a lower torque adjustment required, the adjustment nut ➐ has to be turned back to the correspondingmarkings after the initial adjustment.After this the adjustment screws ➑ have to be tightened again. Generally a stepless torque adjustment even betweenmarkings, is possible. For adjustments in the lower torque area a clamping nut is recommended. General notes The break loose moment of torque limiters is in the average about 20%above the dynamic slippage. The torque depends greatly on the surface quality of the driven part, the break-in period and the tolerances of normparts. The driven part should ideally be ground. Very negative are the effects of oil, fat and dampness for the set torque. 8 7 4 4 6 7 8 www.jbj.co.uk/torque-limiting-couplings.html 18 #DriveLineHarmony Torque Limiting Couplings Adjustment
Pre-assembled Torque adjusted www.jbj.co.uk/torque-limiting-couplings.html 19 #DriveLineHarmony Torque Limiting Couplings Adjustments 4 7 9 TorqueAdjustments DA6 - DA10 Torque limiters DA 6 to DA 10 carry the adjustment markings on the outside of the pressure ring ➍ and the adjustment nut ➐ . At first the adjustment screws ➒ with the springs will be turned back far enough that the springs or washer touch the adjustment nut free of any play. After this the adjustment nut ➐ will be turned hand tight against the pressure ring ➍. At the same time the markings of the adjustment nut ➐ will be matched with the nearest marking of the pressure ring ➍. Now the adjustment screws ➒ are being tightened completely into the adjustment nut ➐ and themaximum torque is obtained. Is a lower torque adjustment required, the adjustment nut ➐ has to be turned back to the corresponding markings after the initial adjustment. After this the adjustment screws ➒ have to be tightened again. Generally a stepless torque adjustment, even betweenmarkings, is possible. On all DELTADATorque limiters is an adjustment list installed, (except DA00 and DA0)
Torque Limiter DA 00 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 5 4,6 4,1 3,6 2,9 2,1 1,2 0,5 - - - - - 2TF Moment (Nm) Two disc spring torque 10 9,2 8,2 7,2 5,8 4,2 2,4 1,0 - - - - - Torque Limiter DA 0 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 10 9 7 6 4 - - - - - - - - 2TF Moment (Nm) Two disc spring torque 20 18 14 12 8 - - - - - - - - Torque Limiter DA 01 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 35 28 25 22 18 14 10 7 5 - - - - 2TF Moment (Nm) Two disc spring torque 70 56 50 44 16 28 20 14 10 - - - - Torque Limiter DA 1 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 75 67 65 60 58 54 49 43 39 35 30 - - 2TF Moment (Nm) Two disc spring torque 150 135 130 120 116 108 98 86 78 70 60 - - Torque Limiter DA 2 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 140 120 110 100 90 70 50 37 25 18 12 - - 2TF Moment (Nm) Two disc spring torque 280 240 220 200 180 140 100 75 50 36 24 - - Torque Limiter DA 3 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 300 240 220 210 200 190 175 160 150 125 100 80 60 2TF Moment (Nm) Two disc spring torque 600 480 440 420 400 380 350 320 300 250 200 160 120 Torque Limiter DA 4 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 600 500 470 440 390 350 310 270 230 190 140 120 90 2TF Moment (Nm) Two disc spring torque 1200 1000 940 880 780 700 620 540 460 380 280 240 180 Torque Limiter DA 5 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 800 680 650 630 600 570 520 460 410 380 350 310 280 2TF Moment (Nm) Two disc spring torque 1600 1360 1300 1260 1200 1140 1040 920 420 760 700 620 560 Torque Limiter DA 6 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 1200 1100 1050 980 900 830 750 670 600 520 - - - 2TF Moment (Nm) Two disc spring torque 2400 2200 2100 1960 1800 1660 1500 1340 1200 1040 - - - Torque Limiter DA 7 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 2000 1920 1800 1670 1510 1350 1180 1020 850 680 - - - 2TF Moment (Nm) Two disc spring torque 4000 3840 3600 3340 3020 2700 2360 2040 1700 1360 - - - Torque Limiter DA 8 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 3400 3280 3100 2900 2620 2380 2140 1900 1660 1420 - - - 2TF Moment (Nm) Two disc spring torque 6800 6560 6200 5800 5240 4760 4280 3800 3320 2840 - - - Torque Limiter DA 9 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 5250 5000 4650 4300 3900 3450 3000 2500 2000 - - - - 2TF Moment (Nm) Two disc spring torque 10.500 10.000 9300 8600 7800 6900 6000 5000 4000 - - - - Torque Limiter DA 10 Partial Turn (TD) of Nut Adjusted by hand max. torque 1 2 3 4 5 6 7 8 9 10 11 12 1TF Moment (Nm) One disc spring torque 11.750 10.650 9550 8450 7200 6000 4750 3500 - - - - - 2TF Moment (Nm) Two disc spring torque 23.500 21.300 19.100 16.900 14.400 12.000 9500 7000 - - - - - Torque Limiting Couplings Torque Limiter Adjustment www.jbj.co.uk/torque-limiting-couplings.html 20 #DriveLineHarmony Partial reverse turn ( X x 60°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°) Partial reverse turn ( X x 30°)
www.jbj.co.uk/torque-limiting-couplings.html 21 #DriveLineHarmony Torque Limiting Couplings LF Torsional Coupling Supplement Characteristics and benefits of DELFLEX LF Torsional Couplings The basic component of the DELFLEX LF Torsional Coupling is the unique and highly versatile elastomeric element. This element can be easily mounted in a number of different ways according to the application, and without special design changes or complex hardware modifications. The element, which is available in different materials for optimum performance, is connected to a cylindrical hub with radial screws and then to a flanged hub by axial screws. This unique coupling design is remarkably simple, highly effective, and gives the DELFLEX LF Torsional Coupling unmatched performance capabilities.
LF Torsional Coupling System These are the six standard LF Torsional coupling models. The simple, unique design of the LF Torsional coupling permits this wide range of models, from common components, to meet each application requirement. From engine flywheel housing or the long corrosive span of a cooling tower, we have the optimum LF Torsional couplingmodel available for your application. www.jbj.co.uk/torque-limiting-couplings.html 22 #DriveLineHarmony Torque Limiting Couplings LF Torsional Coupling Supplement Model 0 and 0/S The heart of the DELFLEX LF Torsional Coupling is the flexible element. This model is easily mounted to the customer’s application designs or customer provided shaft hubs. No bands, special tools, or contoured element clamping flanges are necessary. This model allows the customer to make his own shaft hubs from readily available steel bar stock. Ideal for quick prototype testing, retrofit and high volume applications. Model O/S permits the driver and driven equipment to be quickly "blind" assembled and allows for free end float. Available in various materials: High-Temperature, Rubber (HTR), Neoprene (CR) and durometers: 50, 60, 70, and 75 ShoreA. Model 1 and 1/S Consists of the standard flexible element (Model 0) with a simple steel cylindrical hub. This satisfies the application requirements for mounting directly to engine flywheels, pulleys, brake discs, friction clutches, universal joints and gears. The cylindrical hub is available in a range of bores (StandardANSI, DIN, JIS) inch, metric, spline and custom. Model 1/S is shown with the S-style axial screw (similar to a dowel) for quick blind assembly of the drive package. The same element combinations available in Model 1 are also available in theModel 1/S. Model 2 and 2/S Provides a complete shaft-to-shaft coupling in a range of sizes for all industrial power transmission applications. It is similar to Model 1 shown above, except a flanged hub is added tomake the shaft to shaft connection. Model 2/S allows the drive package to be "blind" connected. As with all S-style models, free axial end float of equipment shafts is accomplished without harmful push-pull force. Parallel misalignment Torsional misalignment Angular misalignment Axial misalignment » Free end float (Type S) » Substantial shock, vibration, andmisalignment capabilities. » Fail-safe operation. » Coupling allows "blind" connection of equipment. » High-speed capabilities. » Economic design. » Application versatility. » Lowweight, lowmoment of inertia. » Free fromnoise and electrically insulating. » No lubrication, maintenance free. » Oil, heat, and corrosion resistant elements (Hytrel®, Zytel® on request). » Easy to disconnect driver and driven without moving equipment or coupling hubs. » Unique "air flow" design assists in keeping components cool during operation. » Short profile for tight engine housing, or shaft-to-shaft requirements. » Easily assembled, no special bands, tools or time consuming assembly procedures. » Torque transmission does not exert harmful reaction loads on equipment. » Various element materials for variation in torsional stiffness and environmental resistance on demand.
www.jbj.co.uk/torque-limiting-couplings.html 23 #DriveLineHarmony Torque Limiting Couplings LF Torsional Coupling Supplement Model 3 (Rubber elements) This model compensates for considerable axial, radial, and angular misalignment, and with the rubber flexible elements is torsionally very soft. Lengths are not standardized, but made according to customer requirements. S-style axial mounting screws allow the hubs to have free end float without exerting axial loads on the connected equipment, while providing quick assembly. Model 3B (Rubber elements) Similar to Model 3, except the centre shaft is supported by internal maintenance-free bearing material. This allows for greater equipment separation and high speeds, as well as high angular misalignment, which can be obtained with rubber flexible elements. One of the many features of the Model 3 is that the centre floating shaft can be radially removed without displacing the coupled machines. Flexible elements may be pre-assembled to the centre segment and then final assembled to the hubs quickly, with little hardware. Model 3S Model 3S is shown with the S-style axial screw (similar to a dowel) for quick blind assembly of the drive package. The same element combinations available inModel 1 are also available in theModel 1/S. Version 2 x 2 screws 180° (DELFLEX LF 1 + LF 2) Axial Screw Radial Screw Version 3 x 3 screws 120° (DELFLEX LF 4, LF 8, LF 16, LF 25, LF 30, LF 90) Version 4 x 4 screws 90° (DELFLEX LF 22, LF 28, LF 50, LF 80, LF 140) Rubber (HTRHigh Temperature Rubber) The coupling elements are torsionally soft and are placed into compression during assembly. Rubber in compression can carry up to five times the amount of torque, as compared to non-compressed elements. The rubber DELFLEX LF Torsional elements effectively accommodate shock, misalignment and vibration and do not exert harmful radial and axial forces on the connected equipment. Each rubber element material is available in various durometer hardness (Shore A Scale) of 50 and 60 for particular torsional vibration requirements. Natural rubber (HTR) elements have an operating range of -40 °C to 90 °C.
DELFLEX LF Torsional dimensions Model 0 Dimensions for basic models (mm) Coupling size DELFLEX Bore B1 Bore B2 OD FOD ET OAL L1 HD ER BE LTB FT FD Min Max Min Max HTR HTR HTR LF1 8 19 8 25 56 56 24 50 26 30 22 2 24 7 36 LF2 10 26 12 38 85 85 24 60 32 40 20 4 28 8 55 LF4 12 30 15 45 100 100 28 64 34 45 24 4 30 8 65 LF8 12 38 18 55 120 120 32 88 46 60 28 4 42 10 80 LF12 12 38 18 55 122 120 32 88 46 60 28 4 42 10 80 LF16 15 48 20 70 150 150 42 106 56 70 36 6 50 12 100 LF22 15 48 20 70 150 150 42 106 56 70 36 6 50 12 100 LF25 15 55 20 85 170 170 46 116 61 85 40 6 55 14 115 LF28 15 55 20 85 170 170 46 116 61 85 40 6 55 14 115 LF30 20 65 25 100 200 200 58 140 74 100 50 8 66 16 140 LF50 20 65 25 100 200 200 58 140 74 100 50 8 66 16 140 LF80 20 65 25 100 205 200 65 141.5 75.5 100 61 4 66 16 140 LF90 30 85 30 110 260 260 70 168 88 125 62 8 80 19 160 LF140 30 85 30 110 260 260 70 168 88 125 62 8 80 19 160 LF250 40 105 40 130 340 340 85 208 108 160 77 8 100 19 195 Model 0S Model 1S Model 1 Torque Limiting Couplings LF Torsional Coupling Supplement www.jbj.co.uk/torque-limiting-couplings.html 24 #DriveLineHarmony
Model 2/S Model 2 Screw-dimensions for basic models (mm) Coupling size DELFLEX R/division BC/division T TS TL R LF1 11 2 @ 180° 44 2 @ 180° M6 10 7 11 LF2 10 2 @ 180° 68 2 @ 180° M8 14 8 10 LF4 12 3 @ 120° 80 3 @ 120° M8 14 8 12 LF8 14 3 @ 120° 100 3 @ 120° M10 17 10 14 LF12 14 4 @ 90° 100 4 @ 90° M11 17 10 14 LF16 18 3 @ 120° 125 3 @ 120° M12 19 12 18 LF22 18 4 @ 90° 125 4 @ 90° M12 19 12 18 LF25 20 3 @ 120° 140 3 @ 120° M14 22 14 20 LF28 20 4 bei @ 90° 140 4 bei @ 90° M14 22 14 20 LF30 25 3 bei @ 120° 165 3 bei @ 120° M16 25 16 25 LF50 25 4 bei @ 90° 165 4 bei @ 90° M16 25 16 25 LF80 30.5 4 bei @ 90° 165 4 bei @ 90° M16 25 16 30.5 LF90 31 3 bei @ 120° 215 3 bei @ 120° M20 32 20 31 LF140 31 4 bei @ 90° 215 4 bei @ 90° M20 32 20 31 LF250 22.5 / 54.5 4 bei @ 90° 280 4 bei @ 90° M20 32 20 22.5 / 54.5 OD HD L d D 1 1 B1 BE LTB LRN Torque Limiting Couplings LF Torsional Coupling Supplement The “S-Style” design is not constrained axially and thus allows the hubs to move apart without creating axial force on the connected equipment. Special length S-Style fastener sleeves can further increase the allowable end float. Angular and parallel misalignment values are dependent on speed, and for rubber elements, they should be adjusted according to figure 2 on page 11. DELFLEX LF torque coupling with DELTA DA. For slip hub see slip hubs and slipping clutch page 12. www.jbj.co.uk/torque-limiting-couplings.html 25 #DriveLineHarmony
DELFLEX LF Torsional performance data Coupling Size DELFLEX Nominal Torque Maximum Torque Max. speed (RPM) Allowable Continuous Vibratory Torque MAX. allowable misalignment** CTdyn Rubber 60 Shore A Rubber 50 Shore A Angular (Degrees) Parallel Axial (end float) T T KN K max nmax TKW (Standard) (Optional) ∆Kw ∆Kr Standard ∆Ka S-Style*** LF1 10 Nm 25 Nm 10.000 5 Nm 140 Nm/rad 90 Nm/rad 3 1.5 mm +/-2 mm +4.6 mm/-2 mm LF2 20 Nm 60 Nm 8000 10 Nm 290 Nm/rad 180 Nm/rad 3 1.5 mm +/-3 mm +3 mm/-3 mm LF4 50 Nm 125 Nm 7000 20 Nm 850 Nm/rad 550 Nm/rad 3 1.5 mm +/-3 mm +4.3 mm/-3 mm LF8 100 Nm 280 Nm 6500 40 Nm 1500 Nm/rad 900 Nm/rad 3 2 mm +/-4 mm +5 mm/-4 mm LF12 140 Nm 360 Nm 6500 50 Nm 4400 Nm/rad 2700 Nm/rad 2 2 mm +/-3 mm +5 mm/-4 mm LF16 200 Nm 560 Nm 6000 80 Nm 3400 Nm/rad 2000 Nm/rad 3 2 mm +/-5 mm +5.8 mm/-5 mm LF22 275 Nm 750 Nm 6000 100 Nm 9000 Nm/rad 6100 Nm/rad 2 2 mm +/-3 mm +5.8 mm/-5 mm LF25 315 Nm 875 Nm 5000 125 Nm 4500 Nm/rad 2800 Nm/rad 3 2 mm +/-5 mm +6.6 mm/-5 mm LF28 420 Nm 1200 Nm 5000 150 Nm 12000 Nm/rad 7500 Nm/rad 2 2 mm +/-3 mm +6.6 mm/-5 mm LF30 500 Nm 1400 Nm 4000 200 Nm 7800 Nm/rad 4800 Nm/rad 3 2 mm +/-5 mm +6.6 mm/-5 mm LF50 700 Nm 2100 Nm 4000 300 Nm 19000 Nm/rad 12000 Nm/rad 3 2 mm +/-5 mm +6.6 mm/-5 mm LF80 900 Nm 2100 Nm 4000 320 Nm 25000 Nm/rad 16000 Nm/rad 2 1.5 mm +/-5 mm +6.6 mm/-3 mm LF90 1100 Nm 3150 Nm 3600 450 Nm 16000 Nm/rad 10500 Nm/rad 3 2 mm +/-5 mm +8.6 mm/-5 mm LF140 1700 Nm 4900 Nm 3600 700 Nm 40000 Nm/rad 26500 Nm/rad 2 2 mm +/-5 mm +8.6 mm/-5 mm LF250 3000 Nm 8750 Nm 3000 1250 Nm 67000 Nm/rad 43000 Nm/rad 2 2 mm +/-5 mm +10 mm/-5 mm Coupling size DELFLEX Wind up (angle of twist) Static stiffness at NOM torque (Degrees) at MAX torque (Degrees) Axial Ca Radial Cr Angular Cw LF1 6 17 38 N/mm 150 N/mm 0.3 Nm/deg LF2 6 17 22 N/mm 150 N/mm 0.3 Nm/deg LF4 5 12 75 N/mm 500 N/mm 2.4 Nm/deg LF8 5 14 75 N/mm 500 N/mm 3.6 Nm/deg LF12 3 7.5 250 N/mm 1000 N/mm 9.0 Nm/deg LF16 5 14 100 N/mm 500 N/mm 5.0 Nm/deg LF22 3 7.5 500 N/mm 1300 N/mm 12.0 Nm/deg LF25 5 14 140 N/mm 600 N/mm 7.0 Nm/deg LF28 3 7.5 550 N/mm 1400 N/mm 17.0 Nm/deg LF30 5 14 190 N/mm 750 N/mm 9.0 Nm/deg LF50 3 7.5 650 N/mm 2200 N/mm 26.0 Nm/deg LF80 3 7.5 850 N/mm 2900 N/mm 34.0 Nm/deg LF90 5 14 220 N/mm 1000 N/mm 17.0 Nm/deg LF140 3 7.5 650 N/mm 2300 N/mm 38.0 Nm/deg LF250 3 7.5 1150 N/mm 4100 N/mm 68.0 Nm/deg Torque Limiting Couplings LF Torsional Coupling Supplement www.jbj.co.uk/torque-limiting-couplings.html 26 #DriveLineHarmony
7 Weights & Mass moment of inertia for couplings with rubber (HTR) elements Coupling size DELFLEX Weight (kg) 2 Inertia (kg-cm ) Model 0 Model 1 Model 1/S Model 2 Model 2/S Model 0 Model 1 Model 1/S Model 2 Model 2/S LF1 0.06 0.21 0.24 0.47 0.49 0.35 0.75 0.86 1.60 1.70 LF2 0.15 0.46 0.49 1.06 1.09 1.25 2.5 3.3 7.3 8.1 LF4 0.21 1.31 0.70 2.31 1.70 3.3 5.0 6.5 11.3 12.8 LF8 0.32 1.35 1.44 3.45 3.54 7.0 15.0 18.6 41.0 44.6 LF12 0.35 1.45 1.56 3.55 3.66 8.4 18.2 20.0 44.2 46.1 LF16 0.65 2.28 2.33 6.16 6.21 23.4 42.5 49.1 118.8 125.4 LF22 0.70 2.52 2.62 6.42 6.62 26.6 50.4 70.2 126.5 146.3 LF25 0.84 3.59 3.77 9.31 9.49 50.2 90.7 102.7 215.0 227.0 LF28 0.95 3.79 4.05 9.51 9.76 55.6 102.4 113.2 247.8 258.5 LF30 1.43 5.66 6.02 15.21 15.57 102.0 200.0 220.4 545.5 565.9 LF50 1.60 6.04 6.50 15.60 16.05 104.0 205.0 253.4 550.5 598.9 LF80 2.10 6.85 7.25 16.60 17.00 131.8 240.3 263.9 585.5 609.1 LF90 3.30 11.55 12.23 28.67 29.35 450.0 657.5 759.2 1630.1 1731.8 LF140 3.65 12.33 13.22 29.45 30.36 572.0 770.0 873.0 1742.6 1845.6 Torque Limiting Couplings LF Torsional Coupling Supplement www.jbj.co.uk/torque-limiting-couplings.html 27 #DriveLineHarmony
Model 3 Model 3B Model 3S Torque Limiting Couplings LF Torsional Coupling Supplement www.jbj.co.uk/torque-limiting-couplings.html 28 #DriveLineHarmony
Coupling size DELFLEX Speed (RPM) 500 600 720 750 900 1000 1200 1500 1800 LF1 2390 2185 1980 1930 1750 1650 1470 1300 1140 LF2 2770 2515 2260 2235 2000 1880 1680 1450 1320 LF4 2950 2690 2440 2390 2190 2060 1850 1630 1500 LF8 3400 3070 2795 2720 2460 2310 2060 1780 1630 LF12 3400 3070 2795 2720 2460 2310 2060 1780 1630 LF16 3660 3275 2970 2900 2610 2440 2160 1830 1650 LF22 3660 3275 2970 2900 2610 2440 2160 1830 1650 LF25 3910 3505 3125 3050 2690 2490 2110 1630 1470 LF28 3910 3505 3125 3050 2690 2490 2110 1630 1470 LF30 4270 3835 3400 3330 2920 2690 2290 1730 1500 LF50 4395 3990 3630 3530 3200 3020 2670 2340 2100 LF80 4395 3990 3630 3530 3200 3020 2690 2340 2100 LF90 4495 3940 3400 3300 2720 2390 1750 965 860 LF140 4750 4290 3835 3730 3300 3070 2640 2100 1860 Coupling size DELFLEX Nominal torque Bore diameter Element Flange Hub Span Y BT FT TD [Nm] B2 OD FOD LTB L ET Rubber Min. Max. Rubber Rubber LF1 10 8 25 56 56 24 * 13 5 7 30 24 LF2 20 12 38 85 85 28 * 14 5 8 40 24 LF4 50 15 45 100 100 30 * 16 5 8 45 28 LF8 100 18 55 120 120 42 * 18 5 10 60 32 LF12 140 18 55 122 120 42 * 18 5 10 60 32 LF16 200 20 70 150 150 50 * 24 5 12 70 42 LF22 275 20 70 150 150 50 * 24 5 12 70 42 LF25 315 20 85 170 170 55 * 26 5 14 85 46 LF28 420 20 85 170 170 55 * 26 5 14 85 46 LF30 500 25 100 200 200 66 * 33 5 16 100 58 LF50 700 25 100 200 200 66 * 33 5 16 100 58 LF80 900 25 100 205 200 66 * 34.5 5 16 100 65 LF90 1.100 30 110 260 260 80 * 39 5 19 125 70 LF140 1.700 30 110 260 260 80 * 39 5 19 125 70 LF250 3.000 40 130 340 340 100 * 46 10 19 160 85 Coupling size DELFLEX Max. speed (RPM) MIN Max. span L (mm) (Short spans only) Span L (mm) at 1750 RPM Model 3 Model 3 (All versions) Model 3 Model 3B LF1 1500 6000 79 1140 1320 LF2 1500 6000 79 1320 1475 LF4 2900 6000 92 1500 1575 LF8 2900 6000 106 1625 1830 LF12 2900 6000 106 1625 1830 LF16 2900 6000 138 1650 1955 LF22 2900 6000 138 1650 1955 LF25 2900 5000 152 1475 2130 LF28 2900 5000 152 1475 2130 LF30 2500 4000 190 1500 2310 LF50 2500 4000 190 2100 2310 LF80 2500 4000 190 2100 2310 LF90 1500 3600 230 865 2515 LF140 1500 3600 230 1855 2515 LF250 1500 3000 274 2185 2970 Model 3, 3B & 3S dimensions (mm) Torque Limiting Couplings LF Torsional Coupling Supplement www.jbj.co.uk/torque-limiting-couplings.html 29 #DriveLineHarmony *Please specify distance between shaft ends L. Refer to table below for max. and min. values. Model 3, 3B & 3S Maximum speed and length data Model 3 (rubber) Max. span L (mm) at various speeds* * Longer spans for given speeds are possible with Model 3B.
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