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Unit of Measure
Items
BS-F Series BS85 - BS465 Backstop Cam Clutch

BS - 85 mm Bore Backstop

BS-F Series BS85 - BS465 Backstop Cam Clutch

BS - 95 mm Bore Backstop

BS-F Series BS85 - BS465 Backstop Cam Clutch

BS - 115 mm Bore Backstop

BS-F Series BS85 - BS465 Backstop Cam Clutch

BS - 140 mm Bore Backstop

BS-F Series BS85 - BS465 Backstop Cam Clutch

BS - 165 mm Bore Backstop
Bore Range - Max. N/A 3.350 in85.00 mm N/A 3.740 in95.00 mm N/A 4.530 in115.00 mm N/A 5.510 in140.00 mm N/A 6.500 in165.00 mm
Bore Range - Min. N/A 2.360 in60.00 mm N/A 2.750 in70.00 mm N/A 3.150 in80.00 mm N/A 3.540 in90.00 mm N/A 3.940 in100.00 mm
Torque Capacity N/A 4980 lb·ft6760 N·m N/A 6590 lb·ft8940 N·m N/A 12000 lb·ft16300 N·m N/A 18000 lb·ft24400 N·m N/A 32500 lb·ft44100 N·m
Inner Race Max. Overrunning Speed N/A 300 rpm
Drag Torque N/A 6.000 lb·ft8.00 N·m N/A 7.370 lb·ft10.00 N·m N/A 11.050 lb·ft15.00 N·m N/A 14.740 lb·ft20.00 N·m N/A 25.060 lb·ft34.00 N·m
A - Backstop width N/A 4.210 in107.00 mm N/A 4.210 in107.00 mm N/A 5.000 in127.00 mm N/A 5.000 in127.00 mm N/A 5.550 in141.00 mm
B - Overall length N/A 8.270 in210.00 mm N/A 9.060 in230.00 mm N/A 10.630 in270.00 mm N/A 12.600 in320.00 mm N/A 14.170 in360.00 mm
C - Inside width N/A 4.13 in105.00 mm N/A 4.410 in112.00 mm N/A 5.000 in127.00 mm N/A 5.280 in134.00 mm N/A 5.280 in134.00 mm
D - Center line of backstop to flange edge N/A 5.940 in151.00 mm N/A 6.340 in161.00 mm N/A 7.130 in181.00 mm N/A 8.170 in207.50 mm N/A 9.550 in242.50 mm
E - Counterbore inside diameter N/A 4.170 in106.00 mm N/A 4.720 in120.00 mm N/A 5.590 in142.00 mm N/A 6.690 in170.00 mm N/A 8.230 in209.00 mm
F - Overall inner race width N/A 4.720 in120.00 mm N/A 4.720 in120.00 mm N/A 5.310 in135.00 mm N/A 5.590 in142.00 mm N/A 5.590 in142.00 mm
G - Counterbore depth N/A 0.300 in7.50 mm N/A 0.160 in4.00 mm N/A 0.160 in4.00 mm N/A 0.160 in4.00 mm N/A 0.160 in4.00 mm
H - Overall backstop width N/A 5.000 in127.00 mm N/A 5.000 in127.00 mm N/A 5.870 in149.00 mm N/A 5.940 in151.00 mm N/A 6.650 in169.00 mm
J - Distance from backstop center line to I-beam edge N/A 32.010 in813.00 mm N/A 35.980 in914.00 mm N/A 50.000 in1270.00 mm N/A 55.980 in1422.00 mm N/A 65.980 in1676.00 mm
K - Torque arm height N/A 2.990 in76.00 mm N/A 4.020 in102.00 mm N/A 4.020 in102.00 mm N/A 5.000 in127.00 mm N/A 5.980 in152.00 mm
L - Torque arm width N/A 2.520 in64.00 mm N/A 2.800 in71.00 mm N/A 2.800 in71.00 mm N/A 2.990 in76.00 mm N/A 3.580 in91.00 mm
Amount of grease N/A 0.140 lb0.065 kg N/A 0.170 lb0.075 kg N/A 0.230 lb0.105 kg N/A 0.330 lb0.150 kg N/A 0.350 lb0.160 kg
Weight - With Torque Arm - Min. Bore N/A 94.600 lb43.000 kg N/A 114.400 lb52.000 kg N/A 180.400 lb82.000 kg N/A 250.800 lb114.000 kg N/A 382.800 lb174.000 kg
Weight - With Torque Arm - Max. Bore N/A 88.000 lb40.000 kg N/A 105.600 lb48.000 kg N/A 167.200 lb76.000 kg N/A 228.800 lb104.000 kg N/A 349.800 lb159.000 kg
Weight - Without Torque Arm - Min. Bore N/A 68.200 lb31.000 kg N/A 81.400 lb37.000 kg N/A 129.800 lb59.000 kg N/A 184.800 lb84.000 kg N/A 259.600 lb118.000 kg
Weight - Without Torque Arm - Max.. Bore N/A 61.600 lb28.000 kg N/A 74.800 lb34.000 kg N/A 116.600 lb53.000 kg N/A 162.800 lb74.000 kg N/A 226.600 lb103.000 kg
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