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
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