Outer Diameter 10mm
Load rating 711N
Max Speed (oil) 56,000 rpm
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Are they shielded or unshielded?
They are shielded, this is indicated by a ZZ at the end of the manufacturers code for your future reference.
are these from china or good quality japanese or german make?
These are good quality bearings from China. We have sold 100,000's of these with no returns and used by a number of our customers in their own quality products.
What material and abec rating please?
Jim Bearings are steel.
Being a British company, we do not generally adopt American standards but I can advise that this bearing has the following tolerance:
ID : 3.992mm~4mm
OD is 9.992mm~10mm
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