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Date: 2016-08-22

Timken 72187 - 72487 bearing stock, Dimensions, Drawing

Series 72000
Cone Part Number 72187
Cup Part Number 72487
Design Units Imperial
Bearing Weight 4.5000 lb
2.1000 Kg
Cage Type Stamped Steel
D - Cup Outer Diameter 4.8750 in
123.825 mm
d - Cone Bore 1.8750 in
47.625 mm
B - Cone Width 1.2910 in
32.791 mm
C - Cup Width 1.0000 in
25.400 mm
T - Bearing Width 1.4375 in
36.513 mm
Z - Number of Rollers Per Row 14
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 2.59 in
65.79 mm
db - Cone Backface Backing Diameter 2.83 in
71.88 mm
Da - Cup Frontface Backing Diameter 4.60 in
116.10 mm
Db - Cup Backface Backing Diameter 4.02 in
102.11 mm
Ab - Cage-Cone Frontface Clearance 0.16 in
4.06 mm
Aa - Cage-Cone Backface Clearance 0.21 in
5.33 mm
a - Effective Center Location3 0.05 in
1.30 mm
C90 - Dynamic Radial Rating (90 million revolutions)1 8910 lbf
39600 N
C1 - Dynamic Radial Rating (1 million revolutions)2 34400 lbf
153000 N
C0 - Static Radial Rating 39400 lbf
175000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)3 11200 lbf
50000 N
K - Factor1 0.79
e - ISO Factor2 0.74
Y - ISO Factor3 0.81
G1 - Heat Generation Factor (Roller-Raceway) 47.7
G2 - Heat Generation Factor (Rib-Roller End) 14.1
Cg - Geometry Factor 0.0772



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