72212/72487 Bore 53.975 Mm, Tapered Roller Bearings, Imperial Single Row
The 72212/72487 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 72212/72487 bearing is a Inch single row tapered roller bearings with an inner diameter of 53.975 mm , an outer diameter of 123.825 mm, a width of 36.512 mm. GCr15SiMn rings, GCr15SiMn rolling mlement. Its dynamic radial rated load is approximately 172308 N, its static radial rated load is approximately 158810 N. together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
72212/72487 bearings ( 53.975 mm x 123.825 mm x 36.512 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 | 72212/72487 |
| Interchangeable | SKF 72212/72487 |
| Bearing Type | Inch single row tapered roller bearings |
| Units | Inch |
| Series | 72000 |
| Contact angle - α [°] | 26.167 |
| Cone | 72212 |
| Cup | 72487 |
| Matched arrangement | No |
| Flange | No |
| Bore | Cylindrical bore |
| Relubrication | No |
| Heat stabilized | 120 °C (250 °F) |
| Row NO. | One |
| Bearing Mass - m [lb] | 4.321 |
| Manufacturer Part Code | 72212/72487 |
| Bearing part | Complete |
| Seal | Open |
| Coating | No |
| Lubricant | No |
| Cage | Stamping steel cage |
| d φ Inside [inch] | 2.125 |
| D Φ Outside [inch] | 4.875 |
| T Thickness [inch] | 1.437 |
| d1 [inch] | 3.514 |
| B Cone [inch] | 1.291 |
| C Cup [inch] | 1.000 |
| a pressure points [inch] | 1.454 |
| r1,2 min. Chamfer [inch] | 0.138 |
| r3,4 min. Chamfer [inch] | 0.130 |
| db min. [inch] | 2.657 |
| Db min. [inch] | 4.488 |
| rb max. [inch] | 0.130 |
| Cb min. [inch] | 0.433 |
| da max. [inch] | 2.638 |
| Da min. [inch] | 3.661 |
| Da max. [inch] | 4.409 |
| Ca min. [inch] | 0.157 |
| ra max. [inch] | 0.138 |
| e Limiting value | 0.75 |
| Y Calculation coefficient | 0.8 |
| Y0 Calculation coefficient | 0.45 |
| Cr Radial Dynamic [lbf] | 38734 |
| C0r Radial Static [lbf] | 35700 |
| Pu Fatigue load limit [lbf] | 4341 |
| nB Speed ratings (grease) [rpm] | 4217 |
| nG Speed ratings (oil) [rpm] | 5507 |
The 72212/72487 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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