What is a Taper Bush

A taper bush (or taper-lock bush) is a mechanical locking device used to securely fasten rotating components—like pulleys, sprockets, or gears—onto shafts. Its tapered design creates a high-friction, concentric, and secure fit through compression, eliminating the need for traditional keys or time-consuming, custom-bored, and keyed components.

• Easy Installation/Removal: Easily fitted using a simple hexagonal wrench (hex key), with tapped holes allowing for quick dismounting using the same screws.
• High Torque Handling: Often used in demanding environments like mining, agriculture, and manufacturing due to their reliable, tight grip, equivalent to a "shrink-on" fit.
• Versatility & Cost-Effectiveness: A single pulley can be adapted to different shaft sizes by just changing the bush, reducing inventory costs.
• Design & Standards: Typically manufactured from cast iron or steel with a precise 
  

  1 in 12

   taper angle (approx. 
  

  $\mathrm{<span\; style="font-size:18px;">4.8</span>}$

  4.8
   degrees).

They are widely used for mounting components in machinery, particularly in conveyor systems and power transmission applications.