... bearing and packaging 2.competitive price 3.ISO9001:2000 NK 30/20 needle roller bearing Details: Shield / closure: Open ball bearing ... Tolerance code: ABEC-1, ABEC-3, ABEC-5, ABEC-7 Vibration level: V4, V3, V2, V1 Radial play: C0, C2, C3 ... , AISI304, AISI316 Retainer: PTFE, nylon, PEEK or (stainless)steel NK 30/20 needle roller bearing Specifications: Needle rollers bearing can bear ...