JNS NA4912 Needle Roller Bearing
JNS NA4912 Machined Ring Type Needle Roller Bearing With Inner Ring, 60mm bore x 85mm outside diameter x 25mm width. Equivalent to IKO NA4912, INA NA4912, NTN NA4912R, Torrington - Koyo NA4912.
Machined type needle roller bearings are high precision bearings which consist of machined outer ring with a complement of needle rollers retained and guided by a cage. The bearings feature a smaller cross-section, higher load-carrying capacity, greater rigidity. Therefore, they are useful in making machinery smaller and lighter.
Specifications- I.D.: 60mm
- O.D.: 85mm
- Width: 25mm
- Dynamic Load Rating: 60100 Cr N
- Static Load Rating: 104900 Cor N
- Limiting Speed: 6000 rpm
JNS Needle Bearing Crossover Chart
- JNS Number with Inner Ring: NA4912
- IKO with Inner Ring: NA4912
- IKO without Inner Ring: RNA4912
- INA with Inner Ring: NA4912
- INA without Inner Ring: RNA4912
- NTN with Inner Ring: NA4912R
- NTN without Inner Ring: RNA4912R
- Torrington - Koyo with Inner Ring: NA4912
- Torrington - Koyo without Inner Ring: RNA4912
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