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Description
Brand - TIMKEN
Item Number - 78255X/78551 TIMKEN
Also Known As - 78255X - 78551
Category - Single Row Tapered Roller Bearing (TS Type)
Bore Diameter (d) mm - 64.987
Bore Diameter (d) inch - 2.5586
Outer Diameter (D) mm - 140.03
Outer Diameter (D) inch - 5.513
Width (T) mm - 36.512
Width (T) inch - 1.4375
Dynamic Load Rating (C1) N - 203000
Dynamic Load Rating (C1) lbf - 45600
Factor (e) - 0.87
Factor (Y) - 0.69
Basic Dynamic Radial Load Rating (90 Million Revolution) (C90) N - 52600
Basic Dynamic Radial Load Rating (90 Million Revolution) (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
Ratio of Basic Dynamic Radial Load Rating to Basic Dynamic Thrust Rating (K) - 0.67
Basic Static Radial Load Rating (C0) N - 193000
Basic Static Radial Load Rating (C0) lbf - 43400
Cone Width (B) mm - 32.923
Cone Width (B) inch - 1.2962
Cup Width (C) mm - 23.52
Cup Width (C) inch - 0.926
Effective Center Location (a) mm - 7.9
Effective Center Location (a) inch - 0.31
Maximum Shaft Fillet Radius (R) mm - 3.5
Maximum Shaft Fillet Radius (R) inch - 0.14
Cone Frontface Backing Diameter (da) mm - 79
Cone Frontface Backing Diameter (da) inch - 3.11
Cone Backface Backing Diameter (db) mm - 89
Cone Backface Backing Diameter (db) inch - 3.5
Max Housing Fillet Radius (r) mm - 2.3
Max Housing Fillet Radius (r) inch - 0.09
Cup Frontface Backing Diameter (Da) mm - 132
Cup Frontface Backing Diameter (Da) inch - 5.2
Cup Backface Backing Diameter (Db) mm - 117
Cup Backface Backing Diameter (Db) inch - 4.61
Cage-Cone Backface Clearance (Aa) mm - 6.9
Cage-Cone Backface Clearance (Aa) inch - 0.27
Cage-Cone Frontface Clearance (Ab) mm - 4.5
Cage-Cone Frontface Clearance (Ab) inch - 0.18
Geometry Factor (G1) - 62.6
Geometry Factor (G2) - 19.1
Geometry Factor (Cg) - 0.0884
Weight (kg) - 2.37
Weight (lbs) - 5.23
Inner Part Number - 78255X
Outer Part Number - 78551
TS - Single Row Tapered Roller Bearing
** Images are for representation purposes only
