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TB 2525 Taper Lock Bushes

TB 2525 Taper bushes are standard conical bushes used as a locking mechanism for fixing pulleys, wheels, shaft couplings and other components to drive shafts.

The bushes have a conical outer surface and a cylindrical inner bore with H7 tolerance including a standardized keyway. Once fixed, the component is capable of transmitting torque while being secured against axial displacement.


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Bushes Fields of Use

The TB 2525 Taper bushes are used in a variety of industrial applications.

They are used to fix standard and non-standard V-belt, timing and flat pulleys, sprockets, TB hubs, shaft couplings and other components.

Bushes Material

Cast iron GG20.

Other materials to order.


The bushes have Whitworth threads and the dimensions of the housings are derived from the original inch dimensions.

Bushes Code Description

TB 2517 - 42

Code Part Description

Taper bush


Type of bush


Size of inner hole

Bushing types by size

  • A - with two clamping screws with internal hex key
  • B - with three clamping screws with cylindrical head and internal hex key

Documents for Download

Dimensions and Parameters of Taper Lock Bushes - Preview

Dimensions and Parameters of Taper Lock Bushes

TYMA CZ Data Sheets

Czech and English (PDF 157.77 kB)

Pulleys and Clamping Bushes - Preview

Pulleys and Clamping Bushes

TYMA CZ Catalogue

Czech and English (PDF 3.64 MB)