A8-22P11 Bore 457.2 Mm, Heavy Duty Gearless Slewing Rings (four-point Contact Ball)
The A8-22P11 Single-row four-point contact ball slewing bearings are widely used in rotational applications requiring the ability to withstand combined loads (axial force, radial force, and overturning moment) and demanding a compact structure and low self-weight, such as engineering machinery (truck cranes, excavators), wind power generation (yaw bearings), port machinery, photovoltaic tracking systems, robotics, and medical devices.
The A8-22P11 bearing is a Heavy Duty Gearless Slewing Rings (four-point contact ball) with an inner diameter of 457.2 mm , an outer diameter of 660.4 mm, a width of 69.85 mm. 50Mn or 42CrMo rings, chrome-alloy steel rolling mlement. Double Sealed type, together determine its load-bearing capacity, rotational accuracy, and applicable working conditions.
A8-22P11 bearings ( 457.2 mm x 660.4 mm x 69.85 mm) have the advantages of Compact structure, lightweight, small footprint, high cost-performance ratio, and are therefore widely used in the Robots, construction machinery, wind turbines, radar antennas, and various rotary worktables.
| Part Number | A8-22P11 |
| Bearing Type | Heavy Duty Gearless Slewing Rings (four-point contact ball) |
| Gears type | Gearless |
| Units | inch |
| Seal | Double Sealed |
| Seal Material | NBR (Nitrile Butadiene Rubber) |
| Rows NO. | One |
| Outside - OD Φ [inch] | 26.00 |
| Inside - ID φ [inch] | 18.00 |
| IO [inch] | 22.02 |
| OI [inch] | 21.98 |
| Overall Hight - HT [inch] | 2.75 |
| OH [inch] | 2.38 |
| IH [inch] | 2.38 |
| Mounting Holes - OBC [inch] | 24.500 |
| OU [inch] | 0.78 |
| No. Holes - OBC | 20 |
| Mounting Holes - IBC [inch] | 19.500 |
| IU [inch] | 3/4-10 |
| No. Holes - IBC | 20 |
| Nominal Capacity Compressive Thrust [lbs] | 309000 |
| Nominal Capacity Raceway Moment [ft-lbs] | 130000 |
| Weight [lbs] | 170 |
The A8-22P11 Single-row four-point contact ball slewing bearings mainly consist of an inner ring, an outer ring, steel balls, spacers, and a sealing device. The raceways are peach-shaped or arc-shaped, and the steel balls form four-point contact with the inner and outer ring raceways. Gears can be integrated into the inner and outer rings.
Single-row four-point contact ball slewing bearings feature a low axial height and light weight due to their single-row structure. One bearing can simultaneously withstand axial loads, radial loads, and overturning moments. The four-point contact design provides high load-bearing capacity, good rigidity, and easy installation and maintenance.
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