Needle bearing: 1. Types: HKseries, KRseries, NAseries, , NATRseries, NUTRseries, RNA, ZARN, ZKLF, ZKLNseries, etc. 2. Material: Gcr15-China, (AISI)52100-USA, (DIN)100CR6-Germany 3. Retainer: Steel cage 4. Clearance: CN, C2, C3, C4, C5 5. Precision level: ABEC-1, ABEC-3, ABEC-5 6. Main application: Needle roller bearings are widely used in machine tools, metallurgical machinery, textile machinery and printing machinery and other machinery and equipment, and mechanical system design allows a very compact and nimble.
