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.
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Unit of Measure
Key Dimensions
Cone Part Number |
N/A 868D |
Bore (d) |
N/A 4 in101.600 mm |
| Dynamic Radial Load Rating - 1M Revs (C1) 1 | N/A 103000 lbf458000 N |
| Dynamic Radial Load Rating - 90M Revs (C90) 2 | N/A 26700 lbf119000 N |
| Dynamic Radial Load Rating 2-Row - 90M Revs (C90-2row) 3 | N/A 46400 lbf207000 N |
| K Factor 4 | N/A 1.74 |
Other Dimensions
Weight |
N/A 16.8 Kg37 lb |
Inner Ring Width (B) |
N/A 5.0000 in127.000 mm |
| Max Shaft Fillet Radius5 | N/A 0.06 in1.5 mm |
Shaft Backing Shoulder Dia. - Frontface (da) |
N/A 4.57 in116 mm |
Cage Location rel. to FF (Ab) |
N/A -0.11 in-2.8 mm |
- 1 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
- 2 Based on 90 x 106 revolutions L10 life, for The Timken Company life calculation method. C90 and Ca90 are radial and thrust values.
- 3 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.
- 4 These factors apply for both inch and metric calculations. Consult your Timken representative for instruction on use.
- 5 These maximum fillet radii will be cleared by the bearing corners.
- 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 Based on 1 x 106 revolutions L10 life, for the ISO life calculation method.
- 8 Geometry constant for Lubrication Life Adjustment Factor a3l.