All Brands
- Basic parameters
- Double row cylindrical roller bearings
- Series
- NNU4988
- Model
- Main Size(mm)
- 440
- d
- 600
- D
- 160
- B
- 4
- r smin 1
- Rated base load
- 2,150
- Dynamic load Cr/kN
- 5,550
- Static load Cor/kN
- 219,000
- Dynamic load Cr/kgf
- 565,000
- Static load Cor/kgf
- Allowable speed(rpm)
- 850
- Grease lubrication
- 1,000
- Oil lubrication
- Size(mm)
- 492
- Fw
- ―
- Ew
- Installation relationship size(mm)
- 456
- d a minmum
- 469
- d b minmum
- 487
- d cmaximum
- 497
- d d minmum
- 584
- Da maximum
- ―
- D b maximum
- ―
- D bminmum
- 3
- r as maximum
- Weight(about)kg
- 127
- NNU Cylindrical hole
- 121
- NNU Tapered hole
- ―
- NN Cylindrical hole
- ―
- NN Tapered hole
