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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 635

Cone Part Number

N/A 643

Cup Part Number

N/A 632-B

Design Unit

N/A Inch

Cage Material

N/A Stamped Steel

Dimensions

d - Bore

N/A 2 3/4 in69.850 mm

D - Cup Outer Diameter

N/A 5.3750 in136.525 mm

D1 - Flange Outer Diameter

N/A 5.6520 in143.561 mm

B - Cone Width

N/A 1.625 in41.275 mm

C - Cup Width

N/A 1.2500 in31.750 mm

C1 - Cup Flange Width

N/A 0.2810 in7.137 mm

T1 - Bearing Width to Flange

N/A 0.6560 in16.662 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.14 in3.600 mm
r - Cup Backface "To Clear" Radius2 N/A 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

N/A 3.15 in80 mm

db - Cone Backface Backing Diameter

N/A 3.39 in86 mm

Da - Cup Frontface Backing Diameter

N/A 4.96 in125.98 mm

Ab - Cage-Cone Frontface Clearance

N/A 0.1 in2.5 mm

Aa - Cage-Cone Backface Clearance

N/A 0.15 in3.8 mm
a - Effective Center Location3 N/A -0.44 in-11.2 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (90 million revolutions)4 N/A 71600 N
C1 - Dynamic Radial Rating (1 million revolutions)5 N/A 62100 lbf276000 N

C0 - Static Radial Rating

N/A 67000 lbf298000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 9980 lbf44400 N

Factors

K - Factor7 N/A 1.61
e - ISO Factor8 N/A 0.36
Y - ISO Factor9 N/A 1.66

G1 - Heat Generation Factor (Roller-Raceway)

N/A 106.4

G2 - Heat Generation Factor (Rib-Roller End)

N/A 21
Cg - Geometry Factor10 N/A 0.0814
  • 1 These maximum fillet radii will be cleared by the bearing corners.
  • 2 These maximum fillet radii will be cleared by the bearing corners.
  • 3 Negative value indicates effective center inside cone backface.
  • 4 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 5 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 6 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values for a single-row, C90(2) is the two-row radial value.
  • 7 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 8 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 9 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 10 Geometry constant for Lubrication Life Adjustment Factor a3l.
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