Andrew,
If you can press them in. A drop of oil can help. But they should not be too hard to press in.
Use the correct size drift - which means it needs to be round, (and may be hollow)
Try not to transmit any force through the balls. So if you are fitting the outer, force should only be applied to the outer part of the bearing.
Similar to fitting to a shaft, the force should only be applied to the inner part of the bearing.
A good hard push fit is really all that is required.
That's my 2cent worth
DaveH
If you can press them in. A drop of oil can help. But they should not be too hard to press in.
Use the correct size drift - which means it needs to be round, (and may be hollow)
Try not to transmit any force through the balls. So if you are fitting the outer, force should only be applied to the outer part of the bearing.
Similar to fitting to a shaft, the force should only be applied to the inner part of the bearing.
A good hard push fit is really all that is required.
That's my 2cent worth
DaveH