NN keyless locking bushes

NN keyless locking bushes have the thinnest wall of all our bushes. They replace the key where the hub bore is only slightly larger than the shaft and there is simply no room for a thicker bush.

NN keyless locking bushes - a keyless connection in a very tight hub

With the NN type, you can use a keyless connection even in a small gear, roller, cam or disc. It is also a convenient way to retrofit when a shaft has to be fitted in a bore only slightly larger than its diameter. You can position the component freely and later remove it without damaging the shaft. A thin bush also does not require the pulley diameter to be increased.

NN locking bushes for hubs with minimal space

NN bushes designated by the d/D dimensions, from small to large shaft diameters. Exact dimensions are given on the product page.

When to choose an NN keyless locking bush - customer questions

When should I choose the NN type?

When there is very little space in the hub and the difference between the bore diameter and the shaft diameter is only a few millimetres.