SB Shear Bolt Torque Limiters

The SB shear bolt torque limiter is a safety device used in power take-off (PTO) shaft systems to protect machinery from excessive torque and prevent damage. It is designed to disconnect the driveline when a certain torque threshold is exceeded, typically caused by overload or a sudden shock load.

The SB shear bolt torque limiter consists of two main components: a hub and a yoke. The hub is connected to the tractor’s PTO shaft, while the yoke is attached to the implement’s input shaft. They are connected by a series of bolts that are designed to shear or break when the torque exceeds a predetermined level.

When the torque transmitted through the PTO shaft exceeds the shear bolt’s specified limit, the bolts will shear off, disconnecting the driveline. This action prevents excessive torque from reaching the implement and protects the machinery from damage. The sheared bolts can be easily replaced, restoring the functionality of the torque limiter.

The SB shear bolt torque limiter is a cost-effective and reliable safety mechanism commonly used in agricultural applications. It provides protection against sudden load changes, such as when a machine encounters a solid object or experiences a jam. By disconnecting the driveline, it prevents damage to the PTO shaft, gearbox, and other components.