8578/8520 (X1S-8578 / Y7S-8520) TIMKEN

Brand - TIMKEN
Item Number - 8578/8520 (X1S-8578 / Y7S-8520) TIMKEN
Also Known As - 8578 - 8520 (X1S-8578 - Y7S-8520)
Category - Double Row Tapered Roller Bearing (2TS-IM Type)
Bore Diameter (d) mm - 241.3
Bore Diameter (d) inch - 9.5
Outer Diameter (D) mm - 327.025
Outer Diameter (D) inch - 12.875
Width (T) mm - 114.3
Width (T) inch - 4.5
Width (C) mm - 82.55
Width (C) inch - 3.25
Dynamic Radial Rating (C1) N - 918000
Dynamic Radial Rating (C1) lbf - 206000
Factor (e) - 0.41
Factor (Y1) - 1.66
Factor (Y2) - 2.47
Dynamic Radial Rating (90 million revolutions) (C90) N - 137000
Dynamic Radial Rating (90 million revolutions) (C90) lbf - 30700
Basic Dynamic Thrust Load Rating (90 Million Revolution) (Ca90) N - 95200
Basic Dynamic Thrust Load Rating (90 Million Revolution) (Ca90) lbf - 21400
Dynamic Radial Rating (Two-Row, 90 million revolutions) (C90(2)) N - 238000
Dynamic Radial Rating (Two-Row, 90 million revolutions) (C90(2)) lbf - 53500
Ratio of Basic Dynamic Radial Load Rating to Basic Dynamic Thrust Rating (K) - 1.44
Maximum Shaft Fillet Radius (R) mm - 6.4
Maximum Shaft Fillet Radius (R) inch - 0.25
Backing Shoulder Diameter (db) mm - 264
Backing Shoulder Diameter (db) inch - 10.39
Maximum Housing Fillet Radius (r) mm - 0.8
Maximum Housing Fillet Radius (r) inch - 0.03
Cup Frontface Backing Diameter (Da) mm - 313
Cup Frontface Backing Diameter (Da) inch - 12.32
Weight (kg) - 23.66
Weight (lbs) - 52.19
Inner Spacer - X1S-8578
Outer Spacer - Y7S-8520
Inner Part Number - 8578
Outer Part Number - 8520
2TS-IM - Two Single-Row Bearings with an Inner-Ring and Outer-Ring Spacer, Indirect Mounting

** Images are for representation purposes only