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    TIMKEN 2688-2630 tapered roller bearings TIMKEN 2688-2630 tapered roller bearings
    Inside Diameter: 26.988 mm
    Outside Diameter: 63.101 mm
    Width: 23.818 mm
    Basic dynamic load rating: 76.6 kN
    Basic static load rating: 81.7 kN
model 2688-2630
Cone Part Number 2688
Cup Part Number 2630
Design Units Imperial
Cage Type Stamped Steel
Bearing Weight 0.400 Kg
0.80 lb
Dimensions
d - Bore 26.988 mm
1.0625 in
D - Cup Outer Diameter 63.101 mm
2.4843 in
B - Cone Width 25.433 mm
1.0013 in
C - Cup Width 19.050 mm
0.7500 in
T - Bearing Width 23.818 mm
0.9377 in
Abutment and Fillet Dimensions
R - Cone Backface "To Clear" Radius 1.520 mm
0.06 in
r - Cup Backface "To Clear" Radius 0.76 mm
0.030 in
da - Cone Frontface Backing Diameter 33.02 mm
1.30 in
db - Cone Backface Backing Diameter 35.05 mm
1.38 in
Da - Cup Frontface Backing Diameter 59.44 mm
2.34 in
Db - Cup Backface Backing Diameter 56.90 mm
2.24 in
Ab - Cage-Cone Frontface Clearance 1.5 mm
0.06 in
Aa - Cage-Cone Backface Clearance 0.3 mm
0.01 in
a - Effective Center Location -9.4 mm
-0.37 in
Basic Load Ratings
C90 - Dynamic Radial Rating (90 million revolutions) 19900 N
4470 lbf
C1 - Dynamic Radial Rating (1 million revolutions) 76600 N
17200 lbf
C0 - Static Radial Rating 81700 N
18400 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions) 8640 N
1940 lbf
Factors
K - Factor 2.3
e - ISO Factor 0.25
Y - ISO Factor 2.36
G1 - Heat Generation Factor (Roller-Raceway) 19.3
G2 - Heat Generation Factor (Rib-Roller End) 8
Cg - Geometry Factor 0.0598

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