Ratchet Torque Limiter SA Series for PTO Drive Shafts

Ratchet Torque Limiter SA Series for PTO Drive Shafts

A ratchet torque limiter is a device that interrupts power transmission in the event of a torque spike or overload exceeding the setting. After removing the cause of the overload, the torque limiter will automatically re-engage. Ratchet torque limiters are typically used to protect appliances subjected to constant or alternating torque from overloads.

SA1 Series Ratchet Torque Limiter

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=8)
7. Housing with yoke
8. Grease nipple

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=8)
7. Housing with yoke
8. Grease nipple

SA2 Series Ratchet Torque Limiter

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=16)
7. Housing with yoke
8. Grease nipple

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=16)
7. Housing with yoke
8. Grease nipple

SA3 Series Ratchet Torque Limiter

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=24)
7. Housing with yoke
8. Grease nipple

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=24)
7. Housing with yoke
8. Grease nipple

SA4 Series Ratchet Torque Limiter

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=32)
7. Housing with yoke
8. Grease nipple

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=32)
7. Housing with yoke
8. Grease nipple

SA5 Series Ratchet Torque Limiter

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=40)
7. Housing with yoke
8. Grease nipple

1. Circlip
2. Retaining washer
3. Dust guard ring
4. Pushpin kit
5. Hub
6. Pawl kit(Qty=40)
7. Housing with yoke
8. Grease nipple

Advantages of Ratchet Torque Limiter

One of the biggest advantages of ratchet torque limiters is that they protect against overload. They work in a similar way to a 1:1 transmission when the torque is less than a predetermined value. Once the torque exceeds the limit, the limiter acts as a clutch and removes inertial energy from the drive train. They operate in milliseconds, making them suitable for a wide range of applications, including conveyors, assembly lines, textile machinery, and printing machines.

This torque limiter is usually made from hardened steel and is backlash-free. It features additional springs for adjusting the limit. It is available in several models, including pneumatic, hydraulic, and mechanical. It can be installed in a variety of positions, depending on the torque limiter's purpose. During normal use, it does not need to be adjusted. During a malfunction, the user can simply disconnect the auger to restore PTO functionality.

One of the advantages of the ratchet torque limiters for PTO drive shaft is that they don't waste any energy, allowing you to tow the vehicle. Without this technology, towing would be impossible. Besides, a PTO ratchet torque limiter is more durable than a manual limiter.

Another major benefit of a PTO ratchet torque limiter is that it offers a safety measure if a PTO-driven implement jams. A small farm tractor can give up when running at 3800 RPM, and if it suddenly stops, the PTO shaft can also fail. The torque limiting device is the first line of defense against such catastrophic failures, and this slip clutch device eliminates the need to change pins.

As a mature PTO shaft supplier, Ever-power offers torque limiters including the shear bolt torque limiter, the PTO overrun clutch, etc., besides ratchet torque limiters. Contact us now to get more information!