 |
BC12MA
SUMA
| ID: | |
|---|---|
| OD: | |
| Thickness: | |
| Torque Capacity: | |
| Weight : | |
| Material: | |
To ensure positive protection against reverse torque runaways in inclined conveyors or elevated installations — and to safeguard operational personnel — it is essential to address the following considerations:
Understand the Causes of Reverse Torque Loading Conditions
Analyze the factors that can lead to reverse torque, such as sudden power loss, mechanical failure, or material overloads.
Install Backstops on Low-Speed Head Shafts
Positioning backstops on the low-speed head shafts ensures maximum effectiveness in preventing conveyor reversal.
Use Proven Methods for Backstop Selection
Select backstops based on methods validated by decades of successful installations, rather than relying solely on theoretical reverse torque calculations.
Recognize the Value of Marland One-Way Backstops
Benefit from the basic design, operating principle, and consistently high torque capacity of Marland One-Way backstops.
Appreciate the Simple Maintenance and Lubrication Requirements
The Marland design offers easy maintenance and minimal lubrication needs, contributing to reliable long-term performance.
BC Holdback Backstop clutch.pdf
Backstop Size |
Torque N-m | Rated Torque lb. ft. |
Max RPM | Load "L" Kgs. | Load "L" lbs. | Max.* Bore mm | Max.* Bore in. | Max.* Bore Keyway mm | Max.* Bore Keyway in. | Ship Weight Kgs. | Ship Weight lbs. |
3MA | 4067 | 3,000 | 300 | 510 | 1,120 | 75 | 2.94 | 20 x 4.9 | .75 x .25 | 46 | 100 |
6MA | 8135 | 6,000 | 250 | 920 | 2,000 | 95 | 3.69 | 25 x 5.4 | .88 x .31 | 69 | 150 |
12MA | 16270 | 12,000 | 210 | 1325 | 2,880 | 115 | 4.50 | 32 x 7.4 | 1.00 x .38 | 100 | 220 |
18MA | 24405 | 18,000 | 180 | 1776 | 3,860 | 140 | 5.44 | 36 x 8.4 | 1.25 x .44 | 152 | 330 |
Backstop Size | A | B | C | D | E | F | G | |||||||
mm | in. | mm | in. | mm | in. | mm | in. | mm | in. | mm | in. | mm | in. | |
3MA | 210 | 8.25 | 143 | 5.62 | 146 | 5.75 | 64 | 2.50 | 76 | 3 | 813 | 32 | 105 | 4.12 |
6MA | 248 | 9.75 | 165 | 6.50 | 169 | 6.62 | 70 | 2.75 | 102 | 4 | 914 | 36 | 124 | 4.87 |
12MA | 292 | 11.50 | 203 | 8.00 | 178 | 7.00 | 83 | 3.25 | 127 | 6 | 1270 | 50 | 146 | 5.75 |
18MA | 343 | 13.50 | 235 | 9.25 | 189 | 7.44 | 92 | 3.62 | 152 | 6 | 1422 | 56 | 168 | 6.6 |
AVAILABLE MODELS BC3MA - BC1200MA
The torque arm prevents backdriving torque and should not be securely clamped into position. Instead, it must have a play of 0.5 inches in both the axial and radial directions.
BC Holdback Backstop Clutches are used in conveyor systems to prevent backward motion when the conveyor needs to stop suddenly. This enhances safety and prevents product damage. The Backstop one way clutch used on conveyor system of Grain Silo Equipment and mining equipment with low speed
Backstop clutches are employed in the freewheel mechanism. Backstop to Prevent Reversal of Inclined Conveyor and Vertical Bucket Elevators .
With the drive at one end of the drive pulley shaft, the backstop should be located at the opposite end, away from the speed reducer and coupling.
Various industrial equipment, such as packaging machines, printing presses, and textile machinery, use one-way backstop clutches to prevent reverse rotation and safeguard against unintended backdriving.
Lubrication
◆ #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 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 based on user’s operating frequency. Add grease to clutch every one month .
Proper operation and maintenance are crucial for ensuring the longevity and performance of one-way backstop clutches. Here are some operating instructions:
Periodically inspect the clutch for signs of wear, damage, or contamination.
Follow the manufacturer's recommended maintenance schedule to replace or repair worn or damaged components.
Avoid subjecting the clutch to torque loads beyond its specified capacity, as this can lead to damage or failure.
Ensure that the clutch is appropriately sized for the intended application to prevent overloading.
FRHD Backstop clutch is king of low-speed plugging device, its structure is compact, light weight, reliable wedge, easy installation, installation accuracy is not high, can be directly installed on the main machine drum shaft, can also be directly installed on the reducer, it is a kind of safety protection device to promote the transport equipment.
1. Are you Trading Company or Manufacturer ?
SUMA is Manufacturer for Freewheel one way bearings 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 Bearing Steel
5. How soon you can make the shipment ?
Usually 15 days
If big quantity, can ship out in 25 days .
Customized sizes may need 30-40 days , Depends on specific order.
6. Is there guarantee of items purchased ?
We produce 1 year warranty for all backstop clutch we sell.
To ensure positive protection against reverse torque runaways in inclined conveyors or elevated installations — and to safeguard operational personnel — it is essential to address the following considerations:
Understand the Causes of Reverse Torque Loading Conditions
Analyze the factors that can lead to reverse torque, such as sudden power loss, mechanical failure, or material overloads.
Install Backstops on Low-Speed Head Shafts
Positioning backstops on the low-speed head shafts ensures maximum effectiveness in preventing conveyor reversal.
Use Proven Methods for Backstop Selection
Select backstops based on methods validated by decades of successful installations, rather than relying solely on theoretical reverse torque calculations.
Recognize the Value of Marland One-Way Backstops
Benefit from the basic design, operating principle, and consistently high torque capacity of Marland One-Way backstops.
Appreciate the Simple Maintenance and Lubrication Requirements
The Marland design offers easy maintenance and minimal lubrication needs, contributing to reliable long-term performance.
BC Holdback Backstop clutch.pdf
Backstop Size |
Torque N-m | Rated Torque lb. ft. |
Max RPM | Load "L" Kgs. | Load "L" lbs. | Max.* Bore mm | Max.* Bore in. | Max.* Bore Keyway mm | Max.* Bore Keyway in. | Ship Weight Kgs. | Ship Weight lbs. |
3MA | 4067 | 3,000 | 300 | 510 | 1,120 | 75 | 2.94 | 20 x 4.9 | .75 x .25 | 46 | 100 |
6MA | 8135 | 6,000 | 250 | 920 | 2,000 | 95 | 3.69 | 25 x 5.4 | .88 x .31 | 69 | 150 |
12MA | 16270 | 12,000 | 210 | 1325 | 2,880 | 115 | 4.50 | 32 x 7.4 | 1.00 x .38 | 100 | 220 |
18MA | 24405 | 18,000 | 180 | 1776 | 3,860 | 140 | 5.44 | 36 x 8.4 | 1.25 x .44 | 152 | 330 |
Backstop Size | A | B | C | D | E | F | G | |||||||
mm | in. | mm | in. | mm | in. | mm | in. | mm | in. | mm | in. | mm | in. | |
3MA | 210 | 8.25 | 143 | 5.62 | 146 | 5.75 | 64 | 2.50 | 76 | 3 | 813 | 32 | 105 | 4.12 |
6MA | 248 | 9.75 | 165 | 6.50 | 169 | 6.62 | 70 | 2.75 | 102 | 4 | 914 | 36 | 124 | 4.87 |
12MA | 292 | 11.50 | 203 | 8.00 | 178 | 7.00 | 83 | 3.25 | 127 | 6 | 1270 | 50 | 146 | 5.75 |
18MA | 343 | 13.50 | 235 | 9.25 | 189 | 7.44 | 92 | 3.62 | 152 | 6 | 1422 | 56 | 168 | 6.6 |
AVAILABLE MODELS BC3MA - BC1200MA
The torque arm prevents backdriving torque and should not be securely clamped into position. Instead, it must have a play of 0.5 inches in both the axial and radial directions.
BC Holdback Backstop Clutches are used in conveyor systems to prevent backward motion when the conveyor needs to stop suddenly. This enhances safety and prevents product damage. The Backstop one way clutch used on conveyor system of Grain Silo Equipment and mining equipment with low speed
Backstop clutches are employed in the freewheel mechanism. Backstop to Prevent Reversal of Inclined Conveyor and Vertical Bucket Elevators .
With the drive at one end of the drive pulley shaft, the backstop should be located at the opposite end, away from the speed reducer and coupling.
Various industrial equipment, such as packaging machines, printing presses, and textile machinery, use one-way backstop clutches to prevent reverse rotation and safeguard against unintended backdriving.
Lubrication
◆ #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 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 based on user’s operating frequency. Add grease to clutch every one month .
Proper operation and maintenance are crucial for ensuring the longevity and performance of one-way backstop clutches. Here are some operating instructions:
Periodically inspect the clutch for signs of wear, damage, or contamination.
Follow the manufacturer's recommended maintenance schedule to replace or repair worn or damaged components.
Avoid subjecting the clutch to torque loads beyond its specified capacity, as this can lead to damage or failure.
Ensure that the clutch is appropriately sized for the intended application to prevent overloading.
FRHD Backstop clutch is king of low-speed plugging device, its structure is compact, light weight, reliable wedge, easy installation, installation accuracy is not high, can be directly installed on the main machine drum shaft, can also be directly installed on the reducer, it is a kind of safety protection device to promote the transport equipment.
1. Are you Trading Company or Manufacturer ?
SUMA is Manufacturer for Freewheel one way bearings 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 Bearing Steel
5. How soon you can make the shipment ?
Usually 15 days
If big quantity, can ship out in 25 days .
Customized sizes may need 30-40 days , Depends on specific order.
6. Is there guarantee of items purchased ?
We produce 1 year warranty for all backstop clutch we sell.
