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1. SMZ Series Cam Clutch is Shielded by shield bearings on both ends, packed with a special grease, and are ready for use. No additional lubricant is required.
2. For attaching pulleys, gears or sprockets to the clutches, insert hubs (with f7 tolerance of ISOR773) along the inner surface of the outer race and screw the bolts (high tension) into the tapped holes on the clutch end.
3. Recommended shaft tolerances are shown in the table on the lower left.
4. External thrust load should be supported by other devices, not by the Cam Clutch.
5. Use only a parallel key to secure the clutch to the shaft. Do not use a tapered Key.
6. When mounting the clutch onto the shaft, apply pressure to the inner race but never to the outer race.
7. Ambient temperature range is 5° to 40°C.
8. Key to be used should be in accordance with ISOR773. (DIN 6885.1)
SMZ Series Freewheel Clutch Bearing.pdf The SMZ Series Cam Clutch comes equipped with shield bearings at both ends, filled with a specialized grease, making it ready for immediate use without the need for any additional lubrication.
The structure of the SMZ CAM Clutch is a testament to precision engineering. Comprising intricate components such as cams, rollers, springs, and housing, each element plays a vital role in ensuring the smooth and reliable operation of the clutch. Understanding the arrangement and interaction of these components is crucial for grasping the clutch's functionality.
Model | Torque capacity (Nm) | Drag Torque(Nm) | Max Overrunning(r/min) | Max indexing (cycle/nin) | Bore size | A | C | B | F | E (M6) | G | PCD | S | H-M No.of | Weight | ||
Inner race | Outer race | Dia. | keyway | ||||||||||||||
SMZ15 | 186 | 0.2 | 2200 | 900 | 150 | 15 | 5×2.3 | 62 | 60 | 68 | 25 | 47 | 5.5 | 58 | 10 | 6-M5×0.8 | 1.4 |
SMZ17 | 215 | 0.2 | 2000 | 800 | 150 | 17 | 5×2.3 | 66 | 64 | 75 | 28 | 52 | 6.3 | 64 | 10 | 6-M5×0.8 | 1.8 |
SMZ20 | 323 | 0.29 | 1900 | 700 | 150 | 20 | 6x2.8 | 67 | 65 | 80 | 30 | 55 | 7.6 | 68 | 12 | 6-M6×1.0 | 2.0 |
SMZ30-22 | 735 | 0.39 | 1800
| 500 | 150 | 22 | 6x2.8 | 82 | 80 | 100 | 45 | 75 | 8.9 | 88 | 16 | 6-M8×1.25 | 3.7 |
SMZ30-25 | 25 | 8×3.3 | |||||||||||||||
SMZ30 | 30 | 10×3.3 | |||||||||||||||
SMZ35 | 1080 | 0.49 | 1700 | 300 | 150 | 35 | 10×3.3 | 87 | 85 | 110 | 50 | 80 | 8.7 | 95 | 16 | 6-M8×1.25 | 4.8 |
SMZ45-40 | 1620 | 0.69 | 1700 | 300 | 150 | 40 | 12×3.3 | 92 | 90 | 125 | 60 | 95 | 8.4 | 110 | 16 | 8-M8×1.25 | 6.2 |
SMZ45 | 45 | 14×3.3 | |||||||||||||||
SMZ60-50 | 2110 | 0.98 | 1600 | 250 | 150 | 50 | 14×3.8 | 102 | 100 | 155 | 80 | 125 | 9.1 | 140 | 16 | 8-M8×1.25 | 10.2 |
SMZ60-55 | 55 | 16×4.3 | |||||||||||||||
SMZ60 | 60 | 18×4.4 | |||||||||||||||
SMZ70-65 | 3040 | 1.27 | 1300 | 250 | 150 | 65 | 18×4.4 | 105 | 103 | 175 | 95 | 145 | 8.6 | 162 | 16 | 8-M8×1.25 | 13.2 |
SMZ70 | 70 | 20×4.9 | |||||||||||||||
The versatility of SMZ CAM Clutches finds expression in a wide array of applications across diverse industries. From automotive systems to industrial machinery, the clutch's unidirectional functionality makes it an indispensable part of numerous setups.
To affix pulleys, gears, or sprockets to the clutches, place hubs (with an f7 tolerance per ISO R773) along the inner surface of the outer race and secure the bolts (high tension) into the threaded holes on the clutch end.
Installing the SMZ CAM Clutch correctly is imperative for optimal performance and longevity. The installation process involves several key steps, each requiring careful attention to detail.
Before installation, a thorough inspection of the SMZ CAM Clutch and its components is essential. This includes checking for any damage, ensuring proper lubrication, and verifying that all parts are in good condition. Any discrepancies discovered during this phase should be addressed promptly.
Proper alignment and positioning of the SMZ CAM Clutch are critical for its effective operation. Precise alignment ensures that the clutch engages and disengages smoothly, minimizing wear and tear. The correct positioning also contributes to the overall efficiency of the machinery.
The table on the bottom right displays the recommended shaft tolerances. 
Ensuring secure fastening of the SMZ CAM Clutch to the shaft or mounting surface is vital. Incorrect or loose fastening can lead to misalignment, reducing the clutch's effectiveness and potentially causing damage to both the clutch and the machinery.
Utilize solely a parallel key for securing the clutch to the shaft, avoiding the use of a tapered key.
When installing the clutch onto the shaft, exert pressure on the inner race exclusively, avoiding any pressure on the outer race. Refer to the illustration on the right for guidance.
For vertical installations, kindly seek guidance from SUMA TEAM .
Select a key that adheres to the specifications outlined in ISO R773 (DIN 6885.1). 
Regular maintenance is paramount to prolonging the life of the SMZ CAM Clutch and maintaining optimal performance. Implementing a proactive maintenance schedule involves several key practices.
Prelubricated with special grease, No lubrication maintenance required.
Scheduled inspections of the SMZ CAM Clutch allow for the early detection of any signs of wear, damage, or misalignment. Addressing issues promptly during these inspections helps prevent more significant problems and extends the overall lifespan of the clutch.
The operating environment can significantly impact the performance of the SMZ CAM Clutch.
Factors such as temperature, humidity, and exposure to contaminants can influence the clutch's effectiveness. Implementing measures to mitigate these environmental factors, such as installing protective covers or seals, contributes to the longevity of the clutch.
The permissible temperature range is between -5°C and 40°C.
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 SMZ Cam clutch sample for quality check .
3. How can I choose the correct MZ Cam 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 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.
1. SMZ Series Cam Clutch is Shielded by shield bearings on both ends, packed with a special grease, and are ready for use. No additional lubricant is required.
2. For attaching pulleys, gears or sprockets to the clutches, insert hubs (with f7 tolerance of ISOR773) along the inner surface of the outer race and screw the bolts (high tension) into the tapped holes on the clutch end.
3. Recommended shaft tolerances are shown in the table on the lower left.
4. External thrust load should be supported by other devices, not by the Cam Clutch.
5. Use only a parallel key to secure the clutch to the shaft. Do not use a tapered Key.
6. When mounting the clutch onto the shaft, apply pressure to the inner race but never to the outer race.
7. Ambient temperature range is 5° to 40°C.
8. Key to be used should be in accordance with ISOR773. (DIN 6885.1)
SMZ Series Freewheel Clutch Bearing.pdf The SMZ Series Cam Clutch comes equipped with shield bearings at both ends, filled with a specialized grease, making it ready for immediate use without the need for any additional lubrication.
The structure of the SMZ CAM Clutch is a testament to precision engineering. Comprising intricate components such as cams, rollers, springs, and housing, each element plays a vital role in ensuring the smooth and reliable operation of the clutch. Understanding the arrangement and interaction of these components is crucial for grasping the clutch's functionality.
Model | Torque capacity (Nm) | Drag Torque(Nm) | Max Overrunning(r/min) | Max indexing (cycle/nin) | Bore size | A | C | B | F | E (M6) | G | PCD | S | H-M No.of | Weight | ||
Inner race | Outer race | Dia. | keyway | ||||||||||||||
SMZ15 | 186 | 0.2 | 2200 | 900 | 150 | 15 | 5×2.3 | 62 | 60 | 68 | 25 | 47 | 5.5 | 58 | 10 | 6-M5×0.8 | 1.4 |
SMZ17 | 215 | 0.2 | 2000 | 800 | 150 | 17 | 5×2.3 | 66 | 64 | 75 | 28 | 52 | 6.3 | 64 | 10 | 6-M5×0.8 | 1.8 |
SMZ20 | 323 | 0.29 | 1900 | 700 | 150 | 20 | 6x2.8 | 67 | 65 | 80 | 30 | 55 | 7.6 | 68 | 12 | 6-M6×1.0 | 2.0 |
SMZ30-22 | 735 | 0.39 | 1800
| 500 | 150 | 22 | 6x2.8 | 82 | 80 | 100 | 45 | 75 | 8.9 | 88 | 16 | 6-M8×1.25 | 3.7 |
SMZ30-25 | 25 | 8×3.3 | |||||||||||||||
SMZ30 | 30 | 10×3.3 | |||||||||||||||
SMZ35 | 1080 | 0.49 | 1700 | 300 | 150 | 35 | 10×3.3 | 87 | 85 | 110 | 50 | 80 | 8.7 | 95 | 16 | 6-M8×1.25 | 4.8 |
SMZ45-40 | 1620 | 0.69 | 1700 | 300 | 150 | 40 | 12×3.3 | 92 | 90 | 125 | 60 | 95 | 8.4 | 110 | 16 | 8-M8×1.25 | 6.2 |
SMZ45 | 45 | 14×3.3 | |||||||||||||||
SMZ60-50 | 2110 | 0.98 | 1600 | 250 | 150 | 50 | 14×3.8 | 102 | 100 | 155 | 80 | 125 | 9.1 | 140 | 16 | 8-M8×1.25 | 10.2 |
SMZ60-55 | 55 | 16×4.3 | |||||||||||||||
SMZ60 | 60 | 18×4.4 | |||||||||||||||
SMZ70-65 | 3040 | 1.27 | 1300 | 250 | 150 | 65 | 18×4.4 | 105 | 103 | 175 | 95 | 145 | 8.6 | 162 | 16 | 8-M8×1.25 | 13.2 |
SMZ70 | 70 | 20×4.9 | |||||||||||||||
The versatility of SMZ CAM Clutches finds expression in a wide array of applications across diverse industries. From automotive systems to industrial machinery, the clutch's unidirectional functionality makes it an indispensable part of numerous setups.
To affix pulleys, gears, or sprockets to the clutches, place hubs (with an f7 tolerance per ISO R773) along the inner surface of the outer race and secure the bolts (high tension) into the threaded holes on the clutch end.
Installing the SMZ CAM Clutch correctly is imperative for optimal performance and longevity. The installation process involves several key steps, each requiring careful attention to detail.
Before installation, a thorough inspection of the SMZ CAM Clutch and its components is essential. This includes checking for any damage, ensuring proper lubrication, and verifying that all parts are in good condition. Any discrepancies discovered during this phase should be addressed promptly.
Proper alignment and positioning of the SMZ CAM Clutch are critical for its effective operation. Precise alignment ensures that the clutch engages and disengages smoothly, minimizing wear and tear. The correct positioning also contributes to the overall efficiency of the machinery.
The table on the bottom right displays the recommended shaft tolerances.
Ensuring secure fastening of the SMZ CAM Clutch to the shaft or mounting surface is vital. Incorrect or loose fastening can lead to misalignment, reducing the clutch's effectiveness and potentially causing damage to both the clutch and the machinery.
Utilize solely a parallel key for securing the clutch to the shaft, avoiding the use of a tapered key.
When installing the clutch onto the shaft, exert pressure on the inner race exclusively, avoiding any pressure on the outer race. Refer to the illustration on the right for guidance.
For vertical installations, kindly seek guidance from SUMA TEAM .
Select a key that adheres to the specifications outlined in ISO R773 (DIN 6885.1).
Regular maintenance is paramount to prolonging the life of the SMZ CAM Clutch and maintaining optimal performance. Implementing a proactive maintenance schedule involves several key practices.
Prelubricated with special grease, No lubrication maintenance required.
Scheduled inspections of the SMZ CAM Clutch allow for the early detection of any signs of wear, damage, or misalignment. Addressing issues promptly during these inspections helps prevent more significant problems and extends the overall lifespan of the clutch.
The operating environment can significantly impact the performance of the SMZ CAM Clutch.
Factors such as temperature, humidity, and exposure to contaminants can influence the clutch's effectiveness. Implementing measures to mitigate these environmental factors, such as installing protective covers or seals, contributes to the longevity of the clutch.
The permissible temperature range is between -5°C and 40°C.
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 SMZ Cam clutch sample for quality check .
3. How can I choose the correct MZ Cam 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 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.
