Description
Timken Taper Cup P/N: 28919, we offer the best service in the industry with years of expert knowledge! Call us if you have questions..
Tech Specs
- Series 28900
- Cone Part Number 28980
- Cup Part Number28919
- Design Unit Inch
- Cage Material Stamped Steel
- Dimensions:
- d – Bore 2.3613 in
- D – Cup Outer Diameter 3.9362 in
- B – Cone Width 1.0000 in
- C – Cup Width 0.7500 in
- T – Bearing Width 0.9688 in
- Abutment and Fillet Dimensions
- R – Cone Backface “To Clear” Radius1 0.140 in
- r – Cup Backface “To Clear” Radius2 0.06 in
- da – Cone Frontface Backing Diameter 2.64 in
- db – Cone Backface Backing Diameter 2.87 in
- Da – Cup Frontface Backing Diameter 3.82 in
- Db – Cup Backface Backing Diameter 3.54 in
- Ab – Cage-Cone Frontface Clearance 0.09 in
- Aa – Cage-Cone Backface Clearance 0.05 in
- a – Effective Center Location3 -0.1 in
- Basic Load Ratings
- C90 – Dynamic Radial Rating (90 million revolutions)
- 4 6180 lbf / 27500 N
- C1 – Dynamic Radial Rating (1 million revolutions)
- 5 23800 lbf / 106000 N
- C0 – Static Radial Rating 33500 lbf / 149000 N
- Ca90 – Dynamic Thrust Rating (90 million revolutions) 6 4500 lbf / 20000 N
- Factors
- K – Factor 71.37
- e – ISO Factor 80.43
- Y – ISO Factor 91.41
- G1 – Heat Generation Factor (Roller-Raceway)60.1
- G2 – Heat Generation Factor (Rib-Roller End)24.5
- Cg – Geometry Factor 100.103
- 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.
