68749A Franke Slewing Ring Bearings - NTN BEARING CORP.

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68749A Franke Slewing Ring Bearings image

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68749A Franke Slewing Ring Bearings Codes and sizes

Series:220000
Cone Part Number:EE221018
Cup Part Number:221575
Design Units:Imperial
Bearing Weight:27.1 Kg
Cage Type:Stamped Steel
d:258.763 mm
D:400.050 mm
B - Cone Width:67.470 mm
C - Cup Width:46.038 mm
B:69.850 mm
R - Cone Backface To Clear Radius1:9.650 mm
r - Cup Backface To Clear Radius2:6.35 mm
da - Cone Frontface Backing Diameter:278.89 mm
db - Cone Backface Backing Diameter:294.89 mm
Da - Cup Frontface Backing Diameter:372.10 mm
Db - Cup Backface Backing Diameter:366.01 mm
Ab - Cage-Cone Frontface Clearance:6.9 mm
Aa - Cage-Cone Backface Clearance:13.5 mm
a - Effective Center Location3:0.8 mm
C90 - Dynamic Radial Rating (90 million revolutions)4:55300 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5:213000 lbf
C0 - Static Radial Rating:326000 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6:37400 lbf
K - Factor7:1.48
e - ISO Factor8:0.39
Y - ISO Factor9:1.52
G1 - Heat Generation Factor (Roller-Raceway):1320.8
G2 - Heat Generation Factor (Rib-Roller End):207.5
Cg - Geometry Factor:0.15

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NTN BEARING CORP.: Address1-2-16 Kyomachibori, Nishi-ku, Osaka-shi, Osaka 520-03653, Japan; Phone(Working Time)753-298-1258; Fax

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angular contact ball bearings

cylindrical roller bearings

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