radial clearance in bearing
radial clearance in bearing
(OP)
We have a centrifugal water pump, 2900 rpm speed. The water temperature is 20-30 centigrade degree. In original design (KSB Germany) this pump has two 6413 C3 bearing with 0.023-0.043 mm radial clearance. Now we can't find C3 bearing. Can we use CN (0.008-.0.028 mm radial clearance) bearing by change the bearing seat tolerance on shaft/housing? The shaft tolerance on shaft is 65k6 (+0.002, +0.021m) and in housing is 160K6(-0.021,+0.04mm).now we use induction heater for mounting bearing on shaft. Thank you
Smaty
Smaty





RE: radial clearance in bearing
Patricia Lougheed
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RE: radial clearance in bearing
International College
Naresuan University
Phitsanulok
Thailand
RE: radial clearance in bearing
Also, the bearing number you provided indicates that it is a single row bearing. Be certain this is correct and that either bearing isn't a dual one.
Tim
RE: radial clearance in bearing
According to your tolerance figures, CN goes up to 0.028, while C3 goes down to 0.023
Perhaps you will be lucky.
I would resist the temptation to adjust the interference fit, as a spin will possibly wreck the shaft or housing.
Remember a tighter fit may mean a shorter life; watch the running temperatures.
Cheers
Steve McKenzie