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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.
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Unit of Measure

Other Dimensions

Outer Ring Flange O.D.(D1)

 N/A 4.2460 in107.848 mm

Outer Ring Width (C)

 N/A 1.0625 in26.988 mm

Outer Ring Flange Width (C2)

 N/A 0.25 in6.35 mm
Max Housing Fillet Radius1 N/A 0.13 in3.3 mm

Housing Backing Shoulder Diameter - Frontface (Da)

 N/A 3.85 in97.03 mm

Key Dimensions

Series

 N/A 525

Cup Part Number

 N/A 522-B

O.D. (D)

 N/A 4 in101.6 mm
K Factor 2 N/A 2.05
e Factor 3 N/A 0.29
Y Factor 4 N/A 2.1

Factors

Geometry Factor (Cg)5 N/A 0.0894
  • 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.