NA78250/78549D TIMKEN

Brand - TIMKEN
Item Number - NA78250/78549D TIMKEN
Also Known As - NA78250 - 78549D
Category - Double Row Tapered Roller Bearing (TNA Type)
Bore Diameter (d) mm - 63.5
Bore Diameter (d) inch - 2.5
Outer Diameter (D) mm - 139.7
Outer Diameter (D) inch - 5.5
Width (T) mm - 77.788
Width (T) inch - 3.0625
Double Outer Ring Width (C) mm - 51.803
Double Outer Ring Width (C) inch - 2.0395
Dynamic Load Rating (C1) N - 353000
Dynamic Load 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 - 2.3
Maximum Shaft Fillet Radius (R) inch - 0.09
Backing Shoulder Diameter (db) mm - 85
Backing Shoulder Diameter (db) inch - 3.35
Maximum Housing Fillet Radius (r) mm - 1.5
Maximum Housing Fillet Radius (r) inch - 0.06
Cup Frontface Backing Diameter (Da) mm - 131
Cup Frontface Backing Diameter (Da) inch - 5.16
Weight (kg) - 5.11
Weight (lbs) - 11.28
Inner Part Number - NA78250
Outer Part Number - 78549D
TNA - Non-Adjustable, Double-Row Bearing

** Images are for representation purposes only