Item # NN4944, Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NN On NTN Bearing Corp. of America

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The rollers in the NN type bearing are guided by the ribs of the inner ring.

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Technical Specifications

Type	N/A Cylindrical Roller Bearing
Bore Type	N/A Cylindrical
Material	N/A Hardened Alloy Steel
Cage Material	N/A High Strength, 2 piece, Machined Brass
Limiting Speed - Oil	N/A 2200 RPM
Limiting Speed - Grease	N/A 1900 RPM
Precision	N/A ISO Class 0
Configuration	N/A Two
Oil Hole	N/A w/o Oil Hole
Radial Internal Clearance	N/A CN
Static Load Rating	N/A 292000 lbf1300000 N1300.00 kN
Dynamic Load Rating	N/A 132000 lbf585000 N585.00 kN
Enclosure	N/A Open
Operating Temperature Range	N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications

Double Row Cylindrical Roller Bearing w/ Cylindrical Bore - Type NN - Dimensions
d	N/A 8.6614 in220.000 mm
D	N/A 11.8110 in300.000 mm
B	N/A 3.1496 in80.000 mm
C	N/A 3.1496 in80.000 mm
Ew	N/A 11.0630 in281.000 mm
r	N/A 0.0827 in2.100 mm
da min	N/A 9.0945 in231 mm
db min	N/A 9.3701 in238.000 mm
Db min	N/A 11.1811 in284.000 mm
Db max	N/A 11.3780 in289.000 mm
ras max	N/A 0.0787 in2.000 mm