AB keyless locking bushes

AB keyless locking bushes transmit torque from the shaft to the hub by friction alone. A plain shaft and a cylindrical hub bore are all you need - there is no need to mill keyways or fit keys.

AB keyless locking bushes - a play-free connection for starts and reversing

You save machining time and do not weaken the shaft with a keyway. The connection is free of play, so it copes well with starts, braking and changes of direction of rotation. You can move or rotate the pulley to the correct position and only then clamp it - this is useful when setting up multi-pulley drives.

AB locking bushes for general-purpose drives, from medium to heavy

AB type bushes designated by the d/D dimensions, in a range shared with the AA, DA and DB types, but with their own design. They perform well in general-purpose drives, from medium to heavy. Exact dimensions are given on the product page.

Mounting an AB keyless locking bush - frequently asked questions

How do I prepare the bush for mounting?

Clean and lightly oil the contact surfaces, slide the bush into the hub, position the pulley on the shaft and tighten the screws gradually and evenly, in accordance with the mounting instructions. Avoid lubricants with friction-reducing additives.