1. More than 10 years export experience 2. ISO 9001 3. OEM service is available 4. Strict quality contral 5. Deliver ... tapered roller bearing, spherical thrust roller bearing, clutch bearing, etc.3 retainer: cooper, nylon, bakelite, stainless.4 quality:ISO90005 delivery: great ... - 1800mm7 Precision level: P4, P5, P6, P0 or ABEC7,5,3,15. Material: GCr15, SiMn etc8 feature: low noise, long life ...