Description
Brand - TIMKEN
Item Number - M278749D/M278710 TIMKEN
Also Known As - M278749D - M278710
Category - Double Row Tapered Roller Bearing (TDI 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 Cups (T) mm - 285.75
Bearing Width across Cups (T) inch - 11.25
Double Cone Width (B) mm - 285.75
Double Cone Width (B) inch - 11.25
Dynamic Radial Rating (Two-Row, 1 million revolutions) (C1) N - 7890000
Dynamic Radial Rating (Two-Row, 1 million revolutions) (C1) lbf - 1770000
Factor (e) - 0.3
Factor (Y1) - 2
Factor (Y2) - 3
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 - 3.3
Maximum Shaft Fillet Radius (R) inch - 0.13
Cone Frontface Backing Diameter (da) mm - 609
Cone Frontface Backing Diameter (da) inch - 23.98
Maximum Housing Fillet Radius (r) mm - 6.4
Maximum Housing Fillet Radius (r) inch - 0.25
Cup Backface Backing Diameter (Db) mm - 756
Cup Backface Backing Diameter (Db) inch - 29.76
Geometry Factor (G1) - 12425.1
Geometry Factor (G2) - 669.4
Geometry Factor (Cg) - 0.299
Weight (kg) - 489.64
Weight (lbs) - 1079.48
Inner Part Number - M278749D
Outer Part Number - M278710
TDI - Double Inner Ring
** Images are for representation purposes only



