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TDI bearings have a one-piece double inner race and two single outer races and are typically supplied complete with an outer race spacer as a pre-set assembly. The bearing can be used at fixed positions on rotation shaft applications. For rotating housing application it can be used to float on the stationary shaft.
Unit of Measure

Specifications

Series

 N/A 48300

Cone Part Number

 N/A 48393D

Cup Part Number

 N/A 48320

Design Unit

 N/A Inch

Cage Material

 N/A Stamped Steel

Related Assembly Number(s)

 N/A 48393D-902B2 48393D-902B6

Dimensions

d - Bore

 N/A 5.3750 in136.525 mm

D - Cup Outer Diameter

 N/A 7.5 in190.5 mm

B - Double Cone Width

 N/A 3.0625 in77.788 mm

C - Cup Width

 N/A 1.3125 in33.338 mm

T - Bearing Width across Cups

 N/A 3.0624 in77.785 mm

Abutment and Fillet Dimensions

R - Cone Backface "To Clear" Radius1 N/A 0.06 in1.5 mm
r - Cup Backface "To Clear" Radius2 N/A 0.130 in3.30 mm

da - Cone Frontface Backing Diameter

 N/A 5.67 in144 mm

Db - Cup Backface Backing Diameter

 N/A 6.97 in177.04 mm

Ab - Cage-Cone Frontface Clearance

 N/A 0.08 in2 mm

Basic Load Ratings

C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3 N/A 16500 lbf73300 N
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4 N/A 111000 lbf492000 N
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5 N/A 28700 lbf128000 N
Ca90 - Dynamic Thrust Rating (90 million revolutions)6 N/A 9060 lbf40300 N

Factors

K - Factor7 N/A 1.82
e - ISO Factor8 N/A 0.32
Y1 - ISO Factor9 N/A 2.1
Y2 - ISO Factor10 N/A 3.13
Cg - Geometry Factor11 N/A 0.121

Spacer

Note

 N/A Spacer shows standard nominal .01 radii, actual bearing may vary
  • 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 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
  • 4 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
  • 5 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.
  • 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 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
  • 11 Geometry constant for Lubrication Life Adjustment Factor a3l.
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