Description
Brand - TIMKEN
Item Number - M278749/M278710CD TIMKEN
Also Known As - M278749 - M278710CD
Category - Double Row Tapered Roller Bearing (TDO Type)
Bore Diameter (d) mm - 571.5
Bore Diameter (d) inch - 22.5
Outer Diameter (D) mm - 812.8
Outer Diameter (D) inch - 32
Bearing Width across Cones (T) mm - 333.375
Bearing Width across Cones (T) inch - 13.125
Double Outer Ring Width (C) mm - 263.525
Double Outer Ring Width (C) inch - 10.375
Dynamic Load Rating (C1) N - 7890000
Dynamic Load Rating (C1) lbf - 1770000
Factor (e) - 0.33
Factor (Y1) - 2.03
Factor (Y2) - 3.02
Dynamic Radial Rating (One-Row, 90 million revolutions) (C90) N - 1180000
Dynamic Radial Rating (One-Row, 90 million revolutions) (C90) lbf - 264000
Dynamic Thrust Rating (90 million revolutions) (Ca90) N - 669000
Dynamic Thrust Rating (90 million revolutions) (Ca90) lbf - 150000
Dynamic Radial Rating (Two-Row, 90 million revolutions) (C90(2)) N - 2050000
Dynamic Radial Rating (Two-Row, 90 million revolutions) (C90(2)) lbf - 460000
Ratio of Basic Dynamic Radial Load Rating to Basic Dynamic Thrust Rating (K) - 1.76
Maximum Shaft Fillet Radius (R) mm - 6.4
Maximum Shaft Fillet Radius (R) inch - 0.25
Cone Backface Backing Diameter (db) mm - 615
Cone Backface Backing Diameter (db) inch - 24.21
Maximum Housing Fillet Radius (r) mm - 1.5
Maximum Housing Fillet Radius (r) inch - 0.06
Cup Frontface Backing Diameter (Da) mm - 774
Cup Frontface Backing Diameter (Da) inch - 30.47
PIn (Ka) mm - 28.58
PIn (Ka) inch - 1.13
PIn (Kb) mm - 17.47
PIn (Kb) inch - 0.69
Geometry Factor (G1) - 12425.1
Geometry Factor (G2) - 669.4
Geometry Factor (Cg) - 0.299
Bearing Weight (kg) - 533.7
Bearing Weight (lbs) - 1176.59
Inner Part Number - M278749
Outer Part Number - M278710CD
** Images are for representation purposes only





