TIMKEN 78251D - 78537 Bearing

TIMKEN 78251D - 78537 Tapered Roller Bearings

Also known as : 78251D - 78537

  • Inside Diameter: 63.5 mm
  • Outside Diameter: 136.525 mm
  • Width: 65.989 mm
  • Basic dynamic load rating: 298 kN
  • Basic static load rating: 77.2 kN

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TIMKEN 78251D - 78537 Bearing

TIMKEN 78251D - 78537 Bearing details

Bearing Number 78251D - 78537
Brand TIMKEN
Type Tapered Roller Bearings - TDI (Tapered Double Inner)
Series 78000
Cone Part Number 78251D
Cup Part Number 78537
Design Units Imperial
Bearing Weight 9.5 lb
4.3 Kg
Cage Type Stamped Steel
Aa - Cage-Cone Backface Clearance 0 in
0 mm
d - Bore 2.5000 in
63.500 mm
D - Cup Outer Diameter 5.3750 in
136.525 mm
B - Double Cone Width 2.5980 in
65.989 mm
C - Cup Width 0.9260 in
23.520 mm
T - Bearing Width across Cups 2.6020 in
66.091 mm
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions) 9970 lbf

44300 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions) 66900 lbf
298000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions) 17400 lbf
77200 N
Ca90 - Dynamic Thrust Rating (90 million revolutions) 14800 lbf
65700 N
K - Factor 0.67
e - ISO Factor 2.6
Y1 - ISO Factor 0.26
Y2 - ISO Factor 0.39
G1 - Heat Generation Factor (Roller-Raceway) 62.6
G2 - Heat Generation Factor (Rib-Roller End) 19.1
Cg - Geometry Factor 0.0884
R - Cone Frontface "To Clear" Radius 0.090 in
2.30 mm
r - Cup Backface "To Clear" Radius 0.130 in
3.30 mm
da - Cone Frontface Backing Diameter 3.11 in
78.90 mm
Db - Cup Backface Backing Diameter 4.53 in
115.10 mm
Ab - Cage-Cone Frontface Clearance 0.08 in
2 mm

As TIMKEN bearing distributor, Nodes bearings have TIMKEN 78251D - 78537 Tapered Roller Bearings - TDI (Tapered Double Inner) in stock.

TIMKEN bearing cross reference

TIMKEN 78251D - 78551 bearing
63.500mm x 140.030mm x 65.989mm
TIMKEN 78251D - 78571 bearing
63.500mm x 144.983mm x 65.989mm