NNU4988K NTN Cylindrical Roller Bearing - Precision Parts Bearing Co., Ltd.

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NNU4988K NTN Cylindrical Roller Bearing image

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Types of Spherical Roller Bearings

Ab - Cage-Cone Frontface Clearance:0.08 in
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)1:17100 lbf
Aa - Cage-Cone Backface Clearance:0.05 in
C0 - Static Radial Rating:14000 lbf
db - Cone Backface Backing Diameter:2.76 in
C90 - Dynamic Radial Rating (90 million revolutions)5:2550 lbf
d:2.4995 in
G1 - Heat Generation Factor (Roller-Raceway):33.5
Design Units:Imperial
K - Factor8:0.75
a - Effective Center Location4:0.45 in
R - Cone Backface To Clear Radius3:0.04 in
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)2:4450 lbf
B - Cone Width:0.6102 in
G2 - Heat Generation Factor (Rib-Roller End):38.2
Cage Type:Stamped Steel
Ca90 - Dynamic Thrust Rating (90 million revolutions)7:3410 lbf
Cone Part Number:L910349
da - Cone Frontface Backing Diameter:2.72 in
C1 - Dynamic Radial Rating (1 million revolutions)6:9850 lbf

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Precision Parts Bearing Co., Ltd.: Address443 Corporate Way Richmond, Kentucky 433287, U.S.A.; Phone(Working Time)329-655-8639; Fax

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