Self-aligning ball bearing 2315M 1.cylindrical and tapered bore ... 2315MModel2315MMain MarterialsGCr15_China/ (AISI) 52100_American/ (Din) 100Cr6_Germany;AdvantageHigh quality + after-service Tolerance:ABEC1, ABEC3, ABEC5 (P0, P6, P5);Vibration:Z1V1, Z2V2 ... (Clearance):C2, C0, C3, C4, C5; ServiceOEM, Offer Design Service Are AvailableSmaple Feeaccording to our designs' mold difficulty , When ordered ...