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Date: 2016-08-22

Timken 3774 - 3720 bearing stock, Dimensions, Drawing

Series 3700
Cone Part Number 3774
Cup Part Number 3720
Design Units Imperial
Bearing Weight 2.3000 lb
1.0000 Kg
Cage Type Stamped Steel
D - Cup Outer Diameter 3.6718 in
93.264 mm
d - Cone Bore 1.5625 in
39.688 mm
B - Cone Width 1.1930 in
30.302 mm
C - Cup Width 0.9375 in
23.813 mm
T - Bearing Width 1.1875 in
30.163 mm
Z - Number of Rollers Per Row 18
R - Cone Backface "To Clear" Radius1 0.140 in
3.560 mm
r - Cup Backface "To Clear" Radius2 0.130 in
3.30 mm
da - Cone Frontface Backing Diameter 1.93 in
49.02 mm
db - Cone Backface Backing Diameter 2.17 in
55.12 mm
Da - Cup Frontface Backing Diameter 3.50 in
87.90 mm
Db - Cup Backface Backing Diameter 3.23 in
82.04 mm
Ab - Cage-Cone Frontface Clearance 0.04 in
1.02 mm
Aa - Cage-Cone Backface Clearance 0.07 in
1.78 mm
a - Effective Center Location3 -0.32 in
-8.10 mm
C90 - Dynamic Radial Rating (90 million revolutions)1 7120 lbf
31700 N
C1 - Dynamic Radial Rating (1 million revolutions)2 27500 lbf
122000 N
C0 - Static Radial Rating 34300 lbf
153000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)3 4120 lbf
18300 N
K - Factor1 1.73
e - ISO Factor2 0.34
Y - ISO Factor3 1.77
G1 - Heat Generation Factor (Roller-Raceway) 49.9
G2 - Heat Generation Factor (Rib-Roller End) 14.5
Cg - Geometry Factor 0.0903



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