Hammering of the sinter bearings into final assembly needs to be carried out using high precision arbors.

​

These armors prevents bearings from getting damaged, and acts like a second calibration of the bearings while assembling.

​

If bearings will be applied from both sides to the main body, then these two bearings are required to be concentric. In order to sustain this concentricity, first a shaft must be inserted into both of these bearings and then they should be hammered into final assembly together, as shown in below picture.

​