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| Place of Origin | CHINA |
| Brand Name | SUMA |
| Model Number | BS85-70 BS85-75 BS85-80 BS85-85 |
BS85 BS85-70 BS85-75 BS85-80 BS85-85 One Way Bearings Backstop Clutch Cam Clutch
Features of freewheel backstop Clutch
The BS series Cam Clutches are intended for applications where reverse rotation of the slow speed conveyor head shaft is to be prevented (backstopping) .
Catalogue of freewheel backstop Clutch for your choice
BS160HS-BS450HS backstop Clutch Data Sheet
| Model | Torque | Max. | Drag | A | B | C | PCD | E | S | H-M Size× Pitch× No.of Tapped HoleS | Grease | Q’ty |
| Capacity | Overrunning | Torque | D | Filler Hole | Grease | |||||||
| (N·m) | (r/min)Inner Race | (N·m) | (Size) | (kg) | ||||||||
| BS160HS | 39200 | 350 | 34.3 | 180 | 360 | 175 | 315 | 220 | 40 | M20×P2.5×10 | PT 1/4 | 0.23 |
| BS200HS | 61700 | 250 | 44.1 | 205 | 430 | 200 | 380 | 260 | 40 | M22 ×P2.5×8 | PT 1/4 | 0.31 |
| BS220HS | 102000 | 200 | 73.5 | 330 | 500 | 325 | 420 | 290 | 40 | M20 ×P2.5×16 | PT 1/4 | 1.3 |
| BS250HS | 147000 | 170 | 93.1 | 370 | 600 | 365 | 530 | 330 | 50 | M24 ×P3.0×16 | PT 1/4 | 1.7 |
| BS270HS | 204000 | 160 | 98 | 385 | 650 | 380 | 575 | 370 | 50 | M24 ×P3.0×16 | PT 1/4 | 2 |
| BS300HS | 294000 | 150 | 108 | 425 | 780 | 420 | 690 | 470 | 60 | M30 ×P3.5×16 | PT 1/4 | 3.6 |
| BS350HS | 392000 | 110 | 157 | 440 | 930 | 480 | 815 | 535 | 70 | M36 ×P4.0×16 | PT 1/4 | 4.1 |
| BS425HS | 735000 | 85 | 216 | 570 | 1030 | 580 | 940 | 635 | 70 | M36 ×P4.0×18 | PT 1/4 | 6.9 |
| BS450HS | 980000 | 80 | 245 | 570 | 1090 | 600 | 990 | 645 | 80 | M42 ×P4.5×18 | PT 1/4 | 7.2 |
| Model | Torque | Max overrunning |
Drag Torque (N-m) |
A | B | C | PCD | E | S |
H-M Size× Pitch ×No.of Tapped Holes |
| Capacity (Nm) | (r/min) Inner race | D | ||||||||
| BS30 | 294 | 350 | 0.58 | 64 | 90 | 64 | 80 | 45 | 13 | M 6 ×P1.0×4 |
| BS50 | 784 | 300 | 0.98 | 67 | 125 | 67 | 110 | 70 | 16 | M 8 ×P1.25×4 |
| BS65 | 1570 | 340 | 3.92 | 90 | 160 | 85 | 140 | 90 | 20 | M10 ×P1.5×6 |
| BS75 | 2450 | 300 | 5.88 | 90 | 170 | 85 | 150 | 100 | 20 | M10 ×P1.5×6 |
| BS85 | 5880 | 300 | 7.84 | 115 | 210 | 110 | 185 | 115 | 30 | M12 ×P1.75×6 |
| BS95 | 7840 | 250 | 9.8 | 115 | 230 | 110 | 200 | 130 | 30 | M14 ×P2.0× 6 |
| BS110 | 10800 | 250 | 14.7 | 115 | 270 | 110 | 220 | 150 | 30 | M16 ×P2.0× 6 |
| BS135 | 15700 | 200 | 19.6 | 135 | 320 | 130 | 280 | 180 | 30 | M16 ×P2.0× 8 |
| New JIS | OldJIS | Bore Diameter | ||
| Keyway | Keyway | Range | W. Min | W.Max |
| JISB1301-1996 | JISB1301-1959 | (mm) | (kg) | (kg) |
| ISO R773 | ||||
| BS30-30J | BS30-30E | 20to30 | 2.3 | 2.1 |
| BS50-45J | BS50-45E | 30to50 | 4.7 | 4 |
| BS50-50J | BS50-50E | |||
| BS65-40J | BS65-40E | 40to65 | 13 | 11.5 |
| BS65-45J | BS65-45E | |||
| BS65-50J | BS65-50E | |||
| BS65-55J | BS65-55E | |||
| BS65-60J | BS65-60E | |||
| BS65-65J | BS65-65E | |||
| BS75-60J | BS75-60E | 50to75 | 14.7 | 13.1 |
| BS75-65J | BS75-65E | |||
| BS75-70J | BS75-70E | |||
| BS75-75J | BS75-75E | |||
| BS85-70J | BS85-70E | 60to85 | 27.2 | 24.7 |
| BS85-75J | BS85-75E | |||
| BS85-80J | BS85-80E | |||
| BS85-85J | BS85-85E | |||
| BS95-80J | BS95-80E | 70to95 | 32.2 | 29.4 |
| BS95-85J | BS95-85E | |||
| BS95-90J | BS95-90E | |||
| BS95-95J | BS95-95E | |||
| BS110-85J | BS110-85E | 80to110 | 38.6 | 34.2 |
| BS110-95J | BS110-95E | |||
| BS110-100J | BS110-100E | |||
| BS110-105J | BS110-105E | |||
| BS110-110J | BS110-110E | |||
| BS135 | BS135 | 90to135 | 76.1 | 68 |
| BS160HS | BS160HS | 100to160 | 120 | 103 |
| BS200HS | BS200HS | 100to200 | 200 | 163 |
| BS220HS | BS220HS | 150to220 | 390 | 338 |
| BS250HS | BS250HS | 175to250 | 760 | 689 |
| BS270HS | BS270HS | 200to270 | 850 | 774 |
| BS300HS | BS300HS | 230to300 | 1,400 | 1,300 |
| BS350HS | BS350HS | 250to350 | 2,300 | 2,120 |
| BS425HS | BS425HS | 325to425 | 3,300 | 2,960 |
| BS450HS | BS450HS | 350to450 | 3,700 | 3,400 |
Q: How do you pack the BS backstop Clutch ?
Q: Can i get the backstop Clutch samples from you?
A: It is highly encouraged to ask for the samples for quality check.
Q: Can you promise to deliver the backstop Clutch in time?
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