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Like the TS bearing design, the TSF design consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft. TSF bearings have flanged cups to facilitate axial location and accurately align seals in through-bored housings.
Unit of Measure

Specifications

Series

 N/A 420000

Cup Part Number

 N/A 421437-B

Design Units

 N/A Imperial

Dimensions

D - Cup Outer Diameter

 N/A 14.3720 in365.049 mm

D1 - Flange Outer Diameter

 N/A 14.8680 in377.647 mm

C - Cup Width

 N/A 2.5000 in63.500 mm

C1 - Cup Flange Width

 N/A 0.5000 in12.700 mm

Abutment and Fillet Dimensions

r - Cup Backface "To Clear" Radius1 N/A 0.130 in3.30 mm

Da - Cup Frontface Backing Diameter

 N/A 13.50 in342.90 mm

Factors

K - Factor2 N/A 1.45
e - ISO Factor3 N/A 0.4
Y - ISO Factor4 N/A 1.49

G1 - Heat Generation Factor (Roller-Raceway)

 N/A 28.9

G2 - Heat Generation Factor (Rib-Roller End)

 N/A 13.1
Cg - Geometry Factor5 N/A 0.145
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 3 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 5 Geometry constant for Lubrication Life Adjustment Factor a3l.