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NF Series backstop clutch is a high-speed anti-reversal device that offers several advantages, including reliable backstopping, smooth operation during disengagement without jamming, large backstop torque, lightweight construction, and ease of installation. Its overall mechanical performance is significantly superior to that of other backstop devices.
The internal structure adopts an optimized design featuring a new type of specially shaped wedge block. In addition to its impact resistance and large backstop torque, the device cleverly utilizes centrifugal force generated by its own rotation. When the input shaft rotates forward at a speed higher than the minimum rotational speed, the backstop operates without contact, resulting in zero wear and an exceptionally long service life.
It is widely used in applications such as belt conveyors, bucket elevators, scraper conveyors, and other equipment requiring anti-reversal functionality.
Parameter of NF Backstop Clutch Cam Clutch
| Model | Torque | Min Rotation | Max Rotation | Dimension | Weight | ||||||||
| speed | speed | ||||||||||||
| Nm | r/min | r/min | d | D | d1 | H | H1 | L | L1 | L2 | L3 | kg | |
| NF10 | 1000 | 450 | 1500 | 40-50 | 190 | 28 | 273 | 150 | 172 | 25 | 20 | 5 | 28 |
| NF16 | 1600 | 45-60 | 208 | 32 | 295 | 160 | 182 | 22 | 31 | ||||
| NF25 | 2500 | 425 | 50-70 | 230 | 38 | 323 | 170 | 190 | 25 | 38 | |||
| NF40 | 4000 | 60-80 | 245 | 42 | 350 | 185 | 207 | 28 | 30 | 49 | |||
| NF63 | 6300 | 400 | 70-90 | 260 | 45 | 370 | 195 | 221 | 30 | 35 | 62 | ||
| NF80 | 8000 | 80-100 | 275 | 48 | 396 | 210 | 226 | 35 | 35 | 73 | |||
| NF100 | 10000 | 90-110 | 295 | 52 | 425 | 225 | 261 | 45 | 98 | ||||
| NF125 | 12500 | 375 | 100-130 | 330 | 58 | 473 | 250 | 296 | 40 | 50 | 8 | 154 | |
| NF160 | 16000 | 1000 | 110-140 | 360 | 62 | 512 | 270 | 306 | 55 | 175 | |||
| NF200 | 20000 | 350 | 120-150 | 400 | 65 | 565 | 300 | 306 | 50 | 58 | 241 | ||
| NF250 | 25000 | 130-160 | 430 | 70 | 620 | 335 | 316 | 63 | 256 | ||||
◆ #2 Lithium-Based Grease is widely used for the cam clutch lubrication. Please contact Suma engineer if special grease are needed .
◆ Grease with Plumbum or Graphit are strictly forbidden.
◆ Lubrication grease was added before cam clutch leave factory, user can install the clutch directly. If clutch leave factory over 1 year or the grease has gone bad , need to clean clutch first then add specified amount grease to the clutch .
◆ Change grease every 3-6 months of backstop clutch based on user’s operating frequency. Add grease to clutch every one month .
1. Are you Trading Company or Manufacturer ?
SUMA is Manufacturer with one-stop service , Production history over 20 years, exporting experience up to 10 years .
2. Can i have Samples to check quality first ?
It is okay to get backstop clutch sample for quality check .
3. How can i choose the correct backstop clutch i need ?
Torque capacity , Rotation Speed , and Dimensions are necessary to choose the right model.
If you not so sure about it, pls share with us, our engineer will give you professional guidance .
4. What Material of the bearings you are supplied ?
Standard Material : GCr15
5. How soon you can make the shipment ?
Usually all are in stock, can ship out within 2-3 days .
If big quantity, can ship out in 10 days .
Customized sizes may need 15-20 days , Depends on specific order.
6. Is there guarantee of items purchased ?
We produce 1 year warranty for all backstop clutch we sell.
NF Series backstop clutch is a high-speed anti-reversal device that offers several advantages, including reliable backstopping, smooth operation during disengagement without jamming, large backstop torque, lightweight construction, and ease of installation. Its overall mechanical performance is significantly superior to that of other backstop devices.
The internal structure adopts an optimized design featuring a new type of specially shaped wedge block. In addition to its impact resistance and large backstop torque, the device cleverly utilizes centrifugal force generated by its own rotation. When the input shaft rotates forward at a speed higher than the minimum rotational speed, the backstop operates without contact, resulting in zero wear and an exceptionally long service life.
It is widely used in applications such as belt conveyors, bucket elevators, scraper conveyors, and other equipment requiring anti-reversal functionality.
Parameter of NF Backstop Clutch Cam Clutch
| Model | Torque | Min Rotation | Max Rotation | Dimension | Weight | ||||||||
| speed | speed | ||||||||||||
| Nm | r/min | r/min | d | D | d1 | H | H1 | L | L1 | L2 | L3 | kg | |
| NF10 | 1000 | 450 | 1500 | 40-50 | 190 | 28 | 273 | 150 | 172 | 25 | 20 | 5 | 28 |
| NF16 | 1600 | 45-60 | 208 | 32 | 295 | 160 | 182 | 22 | 31 | ||||
| NF25 | 2500 | 425 | 50-70 | 230 | 38 | 323 | 170 | 190 | 25 | 38 | |||
| NF40 | 4000 | 60-80 | 245 | 42 | 350 | 185 | 207 | 28 | 30 | 49 | |||
| NF63 | 6300 | 400 | 70-90 | 260 | 45 | 370 | 195 | 221 | 30 | 35 | 62 | ||
| NF80 | 8000 | 80-100 | 275 | 48 | 396 | 210 | 226 | 35 | 35 | 73 | |||
| NF100 | 10000 | 90-110 | 295 | 52 | 425 | 225 | 261 | 45 | 98 | ||||
| NF125 | 12500 | 375 | 100-130 | 330 | 58 | 473 | 250 | 296 | 40 | 50 | 8 | 154 | |
| NF160 | 16000 | 1000 | 110-140 | 360 | 62 | 512 | 270 | 306 | 55 | 175 | |||
| NF200 | 20000 | 350 | 120-150 | 400 | 65 | 565 | 300 | 306 | 50 | 58 | 241 | ||
| NF250 | 25000 | 130-160 | 430 | 70 | 620 | 335 | 316 | 63 | 256 | ||||
◆ #2 Lithium-Based Grease is widely used for the cam clutch lubrication. Please contact Suma engineer if special grease are needed .
◆ Grease with Plumbum or Graphit are strictly forbidden.
◆ Lubrication grease was added before cam clutch leave factory, user can install the clutch directly. If clutch leave factory over 1 year or the grease has gone bad , need to clean clutch first then add specified amount grease to the clutch .
◆ Change grease every 3-6 months of backstop clutch based on user’s operating frequency. Add grease to clutch every one month .
1. Are you Trading Company or Manufacturer ?
SUMA is Manufacturer with one-stop service , Production history over 20 years, exporting experience up to 10 years .
2. Can i have Samples to check quality first ?
It is okay to get backstop clutch sample for quality check .
3. How can i choose the correct backstop clutch i need ?
Torque capacity , Rotation Speed , and Dimensions are necessary to choose the right model.
If you not so sure about it, pls share with us, our engineer will give you professional guidance .
4. What Material of the bearings you are supplied ?
Standard Material : GCr15
5. How soon you can make the shipment ?
Usually all are in stock, can ship out within 2-3 days .
If big quantity, can ship out in 10 days .
Customized sizes may need 15-20 days , Depends on specific order.
6. Is there guarantee of items purchased ?
We produce 1 year warranty for all backstop clutch we sell.
