78250/78551 (Y2S-78551) TIMKEN

Brand - TIMKEN
Item Number - 78250/78551 (Y2S-78551) TIMKEN
Also Known As - 78250 - 78551 (Y2S-78551)
Category - Double Row Tapered Roller Bearing (2TS-DM Type)
Bore Diameter (d) mm - 63.5
Bore Diameter (d) inch - 2.5
Outer Diameter (D) mm - 140.03
Outer Diameter (D) inch - 5.513
Width (T) mm - 73.025
Width (T) inch - 2.875
Width (B) mm - 66.472
Width (B) inch - 2.617
Dynamic Radial Rating (C1) N - 353000
Dynamic Radial Rating (C1) lbf - 79300
Factor (e) - 0.87
Factor (Y1) - 0.78
Factor (Y2) - 1.16
Dynamic Radial Rating (90 million revolutions) (C90) N - 52600
Dynamic Radial Rating (90 million revolutions) (C90) lbf - 11800
Basic Dynamic Thrust Load Rating (90 Million Revolution) (Ca90) N - 77900
Basic Dynamic Thrust Load Rating (90 Million Revolution) (Ca90) lbf - 17500
Dynamic Radial Rating (Two-Row, 90 million revolutions) (C90(2)) N - 91500
Dynamic Radial Rating (Two-Row, 90 million revolutions) (C90(2)) lbf - 20600
Ratio of Basic Dynamic Radial Load Rating to Basic Dynamic Thrust Rating (K) - 0.67
Maximum Shaft Fillet Radius (R) mm - 0.5
Maximum Shaft Fillet Radius (R) inch - 0.02
Backing Shoulder Diameter (db) mm - 79
Backing Shoulder Diameter (db) inch - 3.1
Maximum Housing Fillet Radius (r) mm - 2.3
Maximum Housing Fillet Radius (r) inch - 0.09
Cup Frontface Backing Diameter (Da) mm - 117
Cup Frontface Backing Diameter (Da) inch - 4.61
Weight (kg) - 5.23
Weight (lbs) - 11.55
Outer Spacer - Y2S-78551
Inner Part Number - 78250
Outer Part Number - 78551
2TS-DM - Two Single-Row Bearings with an Inner-Ring and Outer-Ring Spacer, Direct Mounting

** Images are for representation purposes only