CN clearance specification is best for looser press-fit bearing bores. MR 17287 LLU/LLB CN - ABEC-5, Radial Bearing (CN clearance) - 17 x 28 x 7mm -. The Enduro line of bearings are available in high-carbon chromium steel, 440C stainless steel, ceramic-hybrid and XD-15 with ceramic or stainless balls.
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