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ITEM NUMBER
NA4976
Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series
d380,000 mmBore
D520,000 mmOutside diameter
B140,000 mmWidth
Verified by Cat Son before quotationPart number · clearance · precision
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TECHNICAL DATA
Specifications for NA4976
Units
Technical Specifications
- Type
- Needle Roller Bearing
- Bore Type
- Round
- Material
- High Carbon Chrome Steel
- Cage Material
- Steel
- Limiting Speed - Oil
- 950 RPM
- Limiting Speed - Grease
- 650 RPM
- Precision
- ISO Class 0
- Configuration
- One
- Enclosure
- Open
- Bearing Design
- w/ Inner Ring
- Oil Hole
- w/ Oil Hole
- Radial Internal Clearance
- CN
- Static Load Rating
- 3750000 N 845000 lbf
- Dynamic Load Rating
- 1400000 N 315000 lbf
- Weight
- 73.600 kg 162.260 lb
- Operating Temperature Range
- -40 to 120 ºC -40 to 250 ºF
Dimensional Specifications
- d
- 380.000 mm 14.9606 in
- D
- 520.000 mm 20.4724 in
- F
- 430.000 mm 16.9291 in
- B
- 140.000 mm 5.5118 in
- r
- 4.000 mm 0.1575 in
- s
- 2.000 mm 0.0787 in
- da min
- 396.000 mm 15.5906 in
- Da max
- 504.000 mm 19.8425 in
- ras max
- 3.000 mm 0.1181 in
DOCUMENTS & SUPPORT
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