HH keyless locking bushes

HH keyless locking bushes fix a pulley, coupling or disc on a plain shaft. The HH type has its own range of outer diameters, different from the other types, which is why it is needed wherever the hub was made specifically for it.

HH keyless locking bushes - replacement without modifying the hub

If an HH bush was used in your machine, you can replace it with a new one without modifying the hub - the same designation is all you need. The frictional connection requires no key, has no play, and you can remove the pulley during servicing without a puller. You save the time and cost of making a new hub.

HH locking bushes with varying wall thickness for small and medium shafts

HH bushes designated by the d/D dimensions, for small and medium shafts, with a wall of varying thickness. Exact dimensions are given on the product page.

Can an HH bush be replaced with another type - questions and answers

Can an HH bush be replaced with another type?

Usually not, because the outer diameters of HH bushes do not coincide with other types. The hub bore must match the diameter D from the designation.