Dan Forsh
Addicted to ArboristSite
So after finally having done my first crank bearings purchasing an arbor press and fabricating my own version of a crank pusher I champing at the bit to start changing the bearings on a few other projects that I know need doing.
Rather than pay the OEM prices I'm now trying to gen up on bearing speak and work out which generic bearings are needed.
At the moment I'm looking to buy a quantity of 6202 and 6203 bearings to sort out a few saws. I now know the difference between open bearings and the variety of sealed bearings such as RS, 2RS, Z, ZZ/2Z.
What do I also need to be sure of specifically for this application before I buy?
The bearings I removed from the saw I recently did were C3 bearings. Reading up on one suppliers site they say:
"C3 bearings are bearings that have an additional internal radial clearance to cope with high speed environments where excess heat is generated.
They are not suited to environments where critical alignment is required from the onset e.g. Where blades and cutters are set up to each other.
Applications like motorcycle wheels or bicycle wheels do not require C3 rated bearings.
Unless the bearing you are replacing specifically says C3 on it then you should not replace it with a C3 bearing, C3 Bearings are loose to the feel from new and often people complain at the quality of the bearing being poor and having more movement than the one they are replacing. This is the characteristic of a C3 bearing."
So C3 or not C3 for cranks? I guess if I get any of the sealed versions I can just pick the seals out, right?
Rather than pay the OEM prices I'm now trying to gen up on bearing speak and work out which generic bearings are needed.
At the moment I'm looking to buy a quantity of 6202 and 6203 bearings to sort out a few saws. I now know the difference between open bearings and the variety of sealed bearings such as RS, 2RS, Z, ZZ/2Z.
What do I also need to be sure of specifically for this application before I buy?
The bearings I removed from the saw I recently did were C3 bearings. Reading up on one suppliers site they say:
"C3 bearings are bearings that have an additional internal radial clearance to cope with high speed environments where excess heat is generated.
They are not suited to environments where critical alignment is required from the onset e.g. Where blades and cutters are set up to each other.
Applications like motorcycle wheels or bicycle wheels do not require C3 rated bearings.
Unless the bearing you are replacing specifically says C3 on it then you should not replace it with a C3 bearing, C3 Bearings are loose to the feel from new and often people complain at the quality of the bearing being poor and having more movement than the one they are replacing. This is the characteristic of a C3 bearing."
So C3 or not C3 for cranks? I guess if I get any of the sealed versions I can just pick the seals out, right?