Page 237 - CITS - Fitter Trade Practical - Volume -2

FITTER - CITS

• Lubricate the bearing.
• Replace the seal, if any.
• Mounting ball bearings
• Clean and measure the shaft diameter (for shaft fit by vernier micrometer and for housing fit by vernier inside
micrometer) to check the necessary interference fit.
• Lubricate the shaft for mounting.
• Place the correct size sleeve on the inner ring of the bearing. (Fig 14).
• Apply hammer blows using common hammer.

• Slowly drive in bearing until you get the metallic sound.
• Similar process should be adopted for the housing fit by selecting proper sleeve to sit on the outer ring.
(Fig 15)

• Use a arbour press whenever possible.

• The use of a arbour press or hydraulic press is particularly suitable, when small bearings are frequently mounted.
Lubricate the shaft and place a mounting sleeve between the bearing and press resting it on the ring with in-
terference fit. The end faces should be flat, parallel and burr free.

• Drive in the bearing into the shaft, by applying the force by the press. (Fig 16)

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CITS : C G & M - Fitter - Exercise 94