28990/28919 Bore 61.976 Mm, 28900 Series, Tapered Roller Bearings Single Row - TS Type Imperial
The 28990/28919 Imperial single-row tapered roller bearings are suitable for applications requiring combined loads and easy installation and maintenance. Classic applications include automotive wheel hubs and axles, industrial gearboxes, agricultural machinery, conveyor rollers, mining equipment, and machine tool spindles.
The 28990/28919 bearing is a Tapered Roller Bearings Single Row - TS type Imperial with an inner diameter of 61.976 mm , an outer diameter of 99.979 mm, a width of 23.813 mm. GCr15 / SAE 52100 / 20CrNiMoA rings, GCr15 / SAE 52100 rolling mlement. Its dynamic axial rated load is approximately 4496 N, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
28990/28919 bearings ( 61.976 mm x 99.979 mm x 23.813 mm) have the advantages of Simultaneously withstands combined loads (radial and axial loads) and is detachable for installation, and are therefore widely used in the Automotive wheel hubs, axles, transmissions, industrial gearboxes, and machine tool spindles.
| Part Number | 28990/28919 |
| Type | TS = Single-row (pressed steel and pin-type) |
| Manufacturer Part Code | 28990-28919 |
| Reference From | TIMKEN 28990/28919 |
| Inner ring (cone) | 28990 |
| Outer ring (cup) | 28919 |
| Series | 28900 |
| Bearing Type | Tapered Roller Bearings Single Row - TS type Imperial |
| Units | Inch |
| Rows NO. | Single row |
| Cage Material | Sheet metal |
| Temperature - T(min) [°C] | -30 |
| Temperature - T(max) [°C] | 110 |
| C1 Dynamic Radial [lbf] | 23835 |
| Ca90 Dynamic Axial [lbf] | 4496 |
| C90 Dynamic Radial [lbf] | 6177 |
| C0 Static Radial [lbf] | 33492 |
| Dimensions | |
| d φ Inside [inch] | 2.44 |
| D Φ Outside [inch] | 3.9362 |
| T thickness [inch] | 0.9375 |
| B Cone Width [inch] | 0.9688 |
| C Cup Width [inch] | 0.75 |
| a Effective center [inch] | -0.07 |
| r Fillet Radius (Housing) [inch] | 0.06 |
| R Fillet Radius (Shaft) [inch] | 0.08 |
| Ab [inch] | 0.09 |
| Aa [inch] | 0.02 |
| da Dia.(Shaft) [inch] | 2.68 |
| db Dia.(Shaft) [inch] | 2.83 |
| Da Dia.(Housing) [inch] | 3.82 |
| Db Dia.(Housing) [inch] | 3.54 |
| Coefficient | |
| e | 0.43 |
| Y | 1.41 |
| K | 1.37 |
| G1 Geometry (Roller-Raceway) | 60.1 |
| G2 Geometry (Rib-Roller End) | 24.5 |
| Cg Geometry | 0.103 |
The 28990/28919 Imperial single-row tapered roller bearings mainly consist of an outer ring, inner ring, tapered rollers, and a cage. The outer and inner ring assemblies are separable for easy installation and adjustment. The rollers make line contact with the raceways. The cage is typically made of stamped steel or brass.
Imperial single-row tapered roller bearings can simultaneously withstand radial and unidirectional axial loads, exhibiting high load-bearing capacity and rigidity. Their separable structure facilitates clearance adjustment and preload control, resulting in a high limiting speed. They conform to imperial standard dimensions and offer excellent interchangeability.
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