21 Sep, 2021

Commonly used in Power Transmission Drives for locating shafts, sprockets, couplings, and pulleys the taper lock bush is a locking mechanism that is also referred to as Taper fit bush or Taper bush. To match the required keyway diameters and shaft the Taper bush is keyed and pre-bored. To match the component bore which is to be located on the shaft the bush’s outside is tapered.

Step- by- assembly of taper bush

To assemble the taper lock bush follow the following steps:

  • The removal of the traces of grease, metal filings, oil, and dirt is very important hence it is quite necessary to clean the taper bush thoroughly. The shaft, the bore of the hub in which the bush is to be installed should be cleaned thoroughly.
  • To ensure that all the surfaces are free from burrs and nicks, and have no signs of fatigue or cracking check the taper bush. When placing the taper bush in the hub match the half holes to make complete holes and it is not important to match the threads but the holes.
  • Oil under the head of the cap screws, threads, and the point of set screws, and after that loosely place the screws into the holes threaded on the hub side.
  • It should be ensured that the taper bush is free inside the hub and then after that locate the assembly in the desired position while slipping it onto the shaft. The top of the key and the bushing keyway slot should have an air gap between them which prevents the cracking of the taper bush.
  • Tighten the screws evenly and alternatively until the bushing is straight into the hub and all the screws are pulled up.
  • For connections without a feather, key make sure that the key of the taper bush is offset by 180 degrees to the shaft keyway, and for the connections with a feather, key align the keyway with the parallel key.
  • Against the large end of the Taper bush if you use a sleeve, or a hammer and block it would help greatly to avoid damaging the taper bush. Use light taps against the taper bush to ensure its square seating. Tighten the screws again and use a torque range to alternatively and evenly tighten the screws until they are up to the optimum torque setting.
  • Until the required torque is achieved and there is no longer any need to tighten,  keep repeating the alternate hammering and tightening of the screws.
  • After all of this fill up the holes with grease or silicone which are not used to prevent them from getting filled with rust and dust.

If you do not know how to set up a taper lock bush we hope this step-by-step guide and help you to operate and use a taper lock bush efficiently and that too with ease.

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