Item # NA4944, Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series On NTN Bearing Corp. of America

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Technical Specifications

Type	N/A Needle Roller Bearing
Bore Type	N/A Round
Material	N/A High Carbon Chrome Steel
Cage Material	N/A Steel
Limiting Speed - Oil	N/A 1600 RPM
Limiting Speed - Grease	N/A 1100 RPM
Precision	N/A ISO Class 0
Configuration	N/A One
Enclosure	N/A Open
Bearing Design	N/A w/ Inner Ring
Oil Hole	N/A w/ Oil Hole
Radial Internal Clearance	N/A CN
Static Load Rating	N/A 286000 lbf1270000.0 N1270.00 kN
Dynamic Load Rating	N/A 118000 lbf525000 N525.00 kN
Weight	N/A 29.762 lb13.500 kg
Operating Temperature Range	N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications

Loading zoom Open Image Machined-Ring Needle Roller Bearing w/ Inner Ring - NA48, NA49 Series - Dimensions
d	N/A 8.6614 in220.000 mm
D	N/A 11.8110 in300.000 mm
F	N/A 9.6457 in245.000 mm
B	N/A 3.1496 in80.000 mm
r	N/A 0.0827 in2.100 mm
s	N/A 0.0591 in1.500 mm
da min	N/A 9.0945 in231 mm
Da max	N/A 11.378 in289 mm
ras max	N/A 0.0787 in2.000 mm