Item # NF228, Cylindrical Roller Bearing - Separable Inner Ring w/ Two Ribs, Outer Ring w/ One Rib On NTN Bearing Corp. of America

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Technical Specifications

Type	N/A Cylindrical Roller Bearing
Bore Type	N/A Round
Material	N/A Hardened Alloy Steel
Cage Material	N/A Pressed Steel
Limiting Speed - Oil	N/A 3100 RPM
Limiting Speed - Grease	N/A 2700 RPM
Precision	N/A ISO Class 0
Configuration	N/A One
Tolerance	N/A ISO Class 0 (RBEC 1)
Oil Hole	N/A w/o Oil Hole
Radial Internal Clearance	N/A CN
Static Load Rating	N/A 90000 lbf400000 N400.00 kN
Dynamic Load Rating	N/A 69500 lbf310000 N310.00 kN
Enclosure	N/A Open
Weight	N/A 18.453 lb8.370 kg
Operating Temperature Range	N/A -40 to 250 ºF-40 to 120 ºC

Dimensional Specifications

Cylindrical Roller Bearing - Separable Inner Ring w/ Two Ribs, Outer Ring w/ One Rib - Dimensions
d	N/A 5.5118 in140.000 mm
D	N/A 9.8425 in250.000 mm
B	N/A 1.6535 in42.000 mm
Ew	N/A 8.7008 in221.000 mm
J	N/A 7.0669 in179.500 mm
r	N/A 0.0984 in2.500 mm
da min	N/A 6.0236 in153.000 mm
db min	N/A 6.0236 in153.000 mm
Da max	N/A 9.3307 in237.000 mm
Db max	N/A 9.3307 in237.000 mm
Db min	N/A 8.8583 in225.000 mm
r1as max	N/A 0.0984 in2.500 mm