NK 30/20 needle roller bearing 1.high quality of bearing and packaging 2.competitive price 3.ISO9001:2000 NK 30/ ... 20 needle roller bearing Details: Shield / closure: Open ball bearing, Z, ZZ, RS, 2RS, 2RZ Tolerance code ... , PEEK or (stainless)steel NK 30/20 needle roller bearing Specifications: Needle rollers bearing can bear greater radial load and there are ones ...