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Timken 3978 - 3920 Timken bearings distributor

Brand.:
Timken
Model No.:
3978 - 3920
Type:
Timken bearings distributor
Technical Parameters:
Series:3900     
Cone Part Number:3978     
Cup Part Number:3920     
R - Cone Backface "To Clear" Radius1:0.060 in      1.520 mm     
Ab - Cage-Cone Frontface Clearance:0.04 in      1.02 mm     
e - ISO Factor2:0.4     
G1 - Heat Generation Factor (Roller-Raceway):75.2     
C0 - Static Radial Rating:43000 lbf      191000 N     
T - Bearing Width:1.1875 in      30.163 mm     
G2 - Heat Generation Factor (Rib-Roller End):21.3     
Da - Cup Frontface Backing Diameter:4.18 in      106.17 mm     
da - Cone Frontface Backing Diameter:2.68 in      68.07 mm     
Design Units:Imperial     
r - Cup Backface "To Clear" Radius2:0.130 in      3.30 mm     
D - Cup Outer Diameter:4.4375 in      112.713 mm     
Cage Type:Stamped Steel     
C - Cup Width:0.9375 in      23.813 mm     
Db - Cup Backface Backing Diameter:3.90 in      99.06 mm     
K - Factor1:1.45     
Aa - Cage-Cone Backface Clearance:0.09 in      2.29 mm     
db - Cone Backface Backing Diameter:2.76 in      70.10 mm     
Cg - Geometry Factor:0.109     
C90 - Dynamic Radial Rating (90 million revolutions)1:8090 lbf      36000 N     
Ca90 - Dynamic Thrust Rating (90 million revolutions)3:5570 lbf      24800 N     
Z - Number of Rollers Per Row:22     
Y - ISO Factor3:1.49     
C1 - Dynamic Radial Rating (1 million revolutions)2:31200 lbf      139000 N     
d - Cone Bore:2.3437 in      59.530 mm     
Bearing Weight:2.9000 lb      1.3000 Kg     
B - Cone Width:1.1830 in      30.048 mm     
a - Effective Center Location3:-0.18 in      -4.60 mm     
Type:  
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Timken 3978 - 3920 description
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