Mechanical Power Transmission S-Flex Couplings Metric Dimensional Data 20 B Type Flanges For Use With Bushes ID1 - ID2 ID1 - ID2 Bush Dimensions Inches Dimensions Millimetres Note F and J bushings are not available fromLovejoy. F bushings are available commercially in a bore range of 1 inch to 4 inches, J bushings in a range of 1-7/8 inches to 4-1/2 inches. Rectangular keys are furnished at no charge when shallow keyway is necessary. Couplings » S-Flex Endurance couplings with B flanges (for use with bushings) are normally supplied with the two-piece E sleeve. » The B style flanges can be used with any of the sleeves pictured on SF-5, with the exception of the Hytrel® sleeve. » B flanges can be used in combination with S Type flanges. » Bushings have a split design that allow for a compression fit for securemounting of the flange to the shaft without set screws. » The bushing’s clamp-like fit creates a one-piece assembly to eliminate woblle, vibration and fretting corrosion. » Slightly oversized or undersized shafts can be accommodated with the same secure grip. » The design prevents potentially hazardous key drift on applications subject to pulsation or vibration. » B flanges are bored to accept a bushing accommodating many bore sizes thus reducing inventory and increasing coupling versatility. » For bushing bore information contact jbj Techniques Ltd. technical office: tel: +44 (0)1737 767493 or email: info@jbj.co.uk Cap Min Max Bore Max Bore Screw Weight L P FL T HD D Bore Standard Standard Torque Keyway Keyway 2 Size in in in in in in in in in Qty Size ft-lbs lbs JA 1.00 0.69 0.31 0.56 2.00 1.375 0.50 1.00 1.19 3 #10-1 5 0.8 1 3 SH 1.25 0.88 0.38 0.81 2.68 1.871 0.50 1.38 1.63 3 /4 - 1 /8 9 0.9 1 3 SD 1.81 1.38 0.44 1.25 3.18 2.187 0.50 1.63 1.94 3 /4 - 11 /16 9 1.6 5 SK 1.87 1.38 0.50 1.25 3.88 2.812 0.50 2.13 2.50 3 /16 - 2 15 2.8 3 SF 2.00 1.50 0.50 1.25 4.63 3.125 0.50 2.31 2.81 3 /8 - 2 30 3.9 1 3 E 2.63 1.88 0.75 1.63 6.00 3.834 0.88 2.88 3.50 3 /2 - 2 /4 60 8.5 9 5 F 3.63 2.81 0.81 2.50 6.63 4.438 1.00 3.25 3.94 3 /16 - 3 /8 75 13.9 5 1 J 4.50 3.50 1.00 3.19 7.25 5.148 1.44 3.75 4.50 3 /8 - 4 /2 135 21.6 Cap Min Max Bore Max Bore Screw Weight L P FL T HD D Bore Standard Standard Torque Keyway Keyway 2 Size mm mm mm mm mm mm mm mm mm Qty Size Nm kg JA 25.40 17.53 7.87 14.22 50.80 34.93 12.70 25.40 30.23 3 #10-1 6.78 0.363 1 3 SH 31.75 22.35 9.65 20.57 68.07 47.52 12.70 35.05 41.40 3 /4 - 1 /8 12.20 0.408 1 3 SD 45.97 35.05 11.18 31.75 80.77 55.55 12.70 41.40 49.28 3 /4 - 11 /16 12.20 0.726 5 SK 47.50 35.05 12.70 31.75 98.55 71.42 12.70 54.10 63.50 3 /16 - 2 20.34 1.270 3 SF 50.80 38.10 12.70 31.75 117.60 79.38 12.70 58.67 71.37 3 /8 - 2 40.67 1.769 1 3 E 66.80 47.75 19.05 41.40 152.40 97.38 22.35 73.15 88.90 3 /2 - 2 /4 81.35 3.856 9 5 F 92.20 71.37 20.57 63.50 168.40 112.73 25.40 82.55 100.08 3 /16 - 3 /8 101.69 6.305 5 1 J 114.30 88.90 25.40 81.03 184.15 130.76 36.58 95.25 114.30 3 /8 - 4 /2 183.04 9.798 www.jbj.co.uk/s-flex-couplings.html #DriveLineHarmony
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