Our PSA20 Series four-point contact ball slewing bearings can simultaneously withstand axial force, radial force, and overturning moment, providing you with an ideal solution with strong load-bearing capacity, compact structure, and high precision.
The four-point contact ball slewing bearing is an innovative rolling bearing. Its unique raceway design enables the steel balls to form four-point contact with the inner and outer raceways in all directions. This design enables the four-point contact ball slewing bearing to simultaneously withstand axial forces, radial forces, and overturning moments. Compared to traditional crossed-roller or three-row roller slewing bearings, it is more compact, lightweight, and easy to install, making it the preferred choice for many types of construction machinery and automation equipment.
| PSA20 Series Four Point Contact Ball Slewing Bearing | ||||||||||
| Light series External gear type | ||||||||||
| Basic model | Weight | Mounting dimensions | Gear parameter | |||||||
| Kg | Da | di | La | na | Li | ni | do | m | z | |
| PSA20.414 | 31 | 503.3 | 342 | 455 | 20 | 368 | 24 | 495 | 5 | 99 |
| PSA20.544 | 43 | 640.3 | 472 | 585 | 28 | 498 | 32 | 630 | 6 | 105 |
| PSA20.644 | 52 | 742.3 | 572 | 685 | 32 | 598 | 36 | 732 | 6 | 122 |
| PSA20.744 | 59 | 838.1 | 672 | 785 | 36 | 698 | 40 | 828 | 6 | 138 |
| PSA20.844 | 71 | 950.1 | 772 | 885 | 36 | 798 | 40 | 936 | 8 | 117 |
| PSA20.944 | 77 | 1046.1 | 872 | 985 | 40 | 898 | 44 | 1032 | 8 | 129 |
| PSA20.1094 | 91 | 1198.1 | 1022 | 1135 | 44 | 1048 | 48 | 1184 | 8 | 148 |
Basic model
Corresponding type
INA
SKF
IMO
Mijnsbergen
Rothe Erde
Rollix
PSA20.414
VSA200414
RKS.061.20.0414
11-20 0411
E.505.20.00.B
061.20.0414
31-0411-01
PSA20.544
VSA200544
RKS.061.20.0544
11-20 0541
E.650.20.00.B
061.20.0544
31-0541-01
PSA20.644
VSA200644
RKS.061.20.0644
11-20 0641
E.750.20.00.B
061.20.0644
31-0641-01
PSA20.744
VSA200744
RKS.061.20.0744
11-20 0741
E.850.20.00.B
061.20.0744
31-0741-01
PSA20.844
VSA200844
RKS.061.20.0844
11-20 0841
E.950.20.00.B
061.20.0844
31-0841-01
PSA20.944
VSA200944
RKS.061.20.0944
11-20 0941
E.1050.20.00.B
061.20.0944
31-0941-01
PSA20.1094
VSA201094
RKS.061.20.1094
11-20 1091
E.1200.20.00.B
061.20.1094
31-1091-01
Our PSA20 Series slewing bearings are meticulously designed and manufactured to provide exceptional performance and reliability.
High Load Capacity, Single-Point Bearing: By optimizing the raceway curvature and ball dimensions, the PSA20 Series' four-point contact ball slewing bearings offer exceptionally high overall load capacity, perfectly accommodating complex load environments. They effectively transfer multi-directional loads to the underlying structure, ensuring smooth equipment operation.
Compact and Lightweight: The unique single-row, four-point contact design makes the PSA20 Series more compact than three-row roller or crossed roller slewing bearings of comparable load capacity. This not only saves installation space but also reduces overall weight, making it ideal for applications with stringent space and weight constraints.
Smooth Operation, High Precision: High-quality balls and precision raceway machining ensure low friction and high rotational accuracy during rotation. Whether it's a robot requiring precise positioning or a crane requiring smooth rotation, the PSA20 Series is perfectly suited for these applications.
Easy Installation and Low Maintenance: The PSA20 Series slewing bearing features an integral structure, making installation quick and easy. Its excellent sealing properties effectively prevent dust and moisture intrusion, extending its service life and significantly reducing ongoing maintenance costs.
Thanks to its powerful comprehensive performance, the PSA20 Series four-point contact ball slewing bearing is widely used in:
Construction Machinery: Excavators, cranes, tunnel boring machines, etc.
Port Machinery: Port cranes, floating cranes, etc.
Automation Equipment: Industrial robots, automated production lines, etc.
Medical Equipment: Medical CT scanners, X-ray machines, etc.
New Energy: Wind turbines, solar trackers, etc.
To help you select the most suitable PSA20 Series slewing bearing, we provide a detailed technical parameter table. You can select the appropriate model based on your equipment requirements (such as axial load, radial load, overturning moment, speed, installation dimensions, etc.). If you have any questions during the selection process, our professional technical team will provide you with technical support at any time.
The PSA20 series four-point contact ball slewing bearing is a wise choice for improving equipment performance and ensuring operational safety. If you are interested in our products or require customized services, please feel free to contact us.
