Ball Bearing Slew Ring Bearing with an ID of 50mm and an OD of 110mm. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural integrity. Elastomer seals protect against dust and debris. The..
$414.51
Ball Bearing Slew Ring Bearing with an ID of 50mm and an OD of 110mm. The threaded holes allow for secure and flexible mounting. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural..
$434.63
Ball Bearing Slew Ring Bearing with an ID of 65mm and an OD of 135mm. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural integrity. Elastomer seals protect against dust and debris. The..
$486.79
Ball Bearing Slew Ring Bearing with an ID of 65mm and an OD of 135mm. The threaded holes allow for secure and flexible mounting. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural..
$510.47
Ball Bearing Slew Ring Bearing with an ID of 122mm and an OD of 226mm. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural integrity. Elastomer seals protect against dust and debris. The..
$576.85
Ball Bearing Slew Ring Bearing with an ID of 122mm and an OD of 226mm. The threaded holes allow for secure and flexible mounting. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural..
$604.71
Ball Bearing Slew Ring Bearing with an ID of 143mm and an OD of 249mm. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural integrity. Elastomer seals protect against dust and debris. The..
$633.37
Ball Bearing Slew Ring Bearing with an ID of 143mm and an OD of 249mm. The threaded holes allow for secure and flexible mounting. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural..
$665.45
Ball Bearing Slew Ring Bearing with an ID of 145mm and an OD of 300mm. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural integrity. Elastomer seals protect against dust and debris. The..
$764.79
Ball Bearing Slew Ring Bearing with an ID of 145mm and an OD of 300mm. The threaded holes allow for secure and flexible mounting. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural..
$801.37
Ball Bearing Slew Ring Bearing - Steel SRB-BMT-0145-0312-STNL ID: 145mm Additional Load Capacity
$839.78
Ball Bearing Slew Ring Bearing with an ID of 145mm and an OD of 312mm and strenghtened with additional load capacity. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural integrity. Elastomer seals..
$839.78
Ball Bearing Slew Ring Bearing with an ID of 170mm and an OD of 310mm. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural integrity. Elastomer seals protect against dust and debris. The..
$905.70
Ball Bearing Slew Ring Bearing with an ID of 170mm and an OD of 310mm. The threaded holes allow for secure and flexible mounting. Suitable for applications requiring intermittent rotation under large loads. The four-point contact ball design ensures optimal load distribution and durability, while the rectangular cross-section increases structural..
$949.26
Plain Slew Ring Bearing - Aluminum SRB-P02-0020-0080-ALNN-M1, Light Weight & Low Cost, ID: 20mm
$106.56
Light Weight Plain Slew Ring Bearing with an inner diameter of 20mm and an outer diameter of 80mm is part of the lightweight and cost-effective SRB-P02 series. With anodized aluminum outer rings, this bearing combines robust strength with a low weight. The inner ring is crafted from FDA-grade plastic, ensuring..
$106.56
Plain Slew Ring Bearing - Aluminum SRB-P02-0030-0100-ALNN-M1, Light Weight & Low Cost, ID: 30mm
$146.09
Light Weight Plain Slew Ring Bearing with an inner diameter of 30mm and an outer diameter of 100mm is part of the lightweight and cost-effective SRB-P02 series. With anodized aluminum outer rings, this bearing combines robust strength with a low weight. The inner ring is crafted from FDA-grade plastic, ensuring..
$146.09
Plain Slew Ring Bearing - Aluminum SRB-P02-0050-0150-ALNN-M1, Light Weight & Low Cost ID: 50mm
$164.19
Light Weight Plain Slew Ring Bearing with an inner diameter of 50mm and an outer diameter of 150mm is part of the lightweight and cost-effective SRB-P02 series. With anodized aluminum outer rings, this bearing combines robust strength with a low weight. The inner ring is crafted from FDA-grade plastic, ensuring..
$164.19
Light Weight Plain Slew Ring Bearing with an inner diameter of 60mm and an outer diameter of 160mm is part of the lightweight and cost-effective SRB-P02 series. With anodized aluminum outer rings, this bearing combines robust strength with a low weight. The inner ring is crafted from FDA-grade plastic, ensuring..
$204.87
Plain Slew Ring Bearing made of anodized aluminum with a 20mm ID and 80mm OD, tailored for heavy-duty applications requiring robust and reliable performance. Designed for applications requiring intermittent rotation while handling heavy radial, axial, and moment loads, its anodized aluminum outer rings provide excellent strength and durability. The self-lubricating,..
$106.27
Plain Slew Ring Bearing - Aluminum SRB-P03-0020-0080-ALNN-E2 High Temperature Material ID: 20mm
$122.49
Plain Slew Ring Bearing made of high temperature aluminum with a 20mm ID and 80mm OD, designed for applications requiring intermittent rotation while handling heavy radial, axial, and moment loads. Equipped with bolt-hole patterns for secure face mounting, this bearing features anodized aluminum outer rings for optimal strength and lightweight..
$122.49
FDA Compliant Aluminum Plain Slew Ring Bearing with an inner diameter of 20mm and outer diameter of 80mm, designed for food and drug handling applications requiring intermittent rotation while handling heavy radial, axial, and moment loads. Its anodized aluminum outer rings provide excellent strength and durability, while the self-lubricating E6..
$93.69
Slew ring bearings, also called turntable bearings or slewing rings, are ring-shaped mechanical assemblies that allow two heavy parts to rotate smoothly relative to each other while supporting three main types of loads: axial loads (weight applied along the axis of rotation), radial loads (side forces applied perpendicular to the axis), and moment loads (tilting and overturning forces). PBC Linear offers compact slew ring bearings with outside diameters from 80 mm to 310 mm. Two main types are available: ball bearing slew rings, which use a four-point contact ball design to handle loads from all directions better than normal ball bearings, and plain, self-lubricating slew ring bearings, which use sliding pads instead of ball bearings for smooth, grease-free motion and lower maintenance. Each assembly has inner and outer rings with built-in mounting holes, making it easy to bolt into place. Standard varieties are available for needs such as ESD protection (static control), FDA-compliant materials, high-temperature use, corrosion resistance, and all-weather durability. These compact slew ring bearings are used in solar tracking systems, medical and diagnostic equipment, robotic assemblies, positioning platforms, packaging equipment, automation systems, and marine applications such as deck equipment, hatch systems, antenna mounts, radar platforms, and other rotating parts exposed to moisture or outdoor conditions.
Ball Bearing Slew Ring Bearing Features
- Four-point contact ball design for enhanced load capacity and better support for loads from multiple directions
- Threaded holes for secure and flexible mounting
- Rectangular cross-section for increased structural integrity
- Elastomer seals for protection against dust and debris
- Pre-lubricated with high-performance grease
- Optimized for thrust and moment load applications
Plain Slew Ring Bearings Features
- Plain, self-lubricating gliding surface for maintenance-free performance
- High load capacity, handling up to 45,000 N static loads and 12,000 N dynamic loads
- Strong anodized aluminum rings and polymer pads for durable, lightweight construction
- Material options for FDA-grade, high-temperature, and ESD/static control requirements
- High-speed capability, supporting up to 600 rpm for dynamic operations
- Suitable for clean, contaminated, indoor, outdoor, and moisture-exposed environments
Frequently Asked Questions
What is a slew ring bearing?
A slew ring bearing, also called a turntable bearing or slewing ring, lets two parts rotate smoothly while supporting weight, side forces, and tilting forces.
What is a four-point ball bearing?
A four-point ball bearing is a bearing design where each ball can contact the bearing races at four points. This helps it handle loads from more directions than a normal ball bearing.
What is the difference between an axial load, a radial load and a moment load?
An axial load pushes or pulls along the axis of rotation. A radial load pushes from the side, perpendicular to the axis. A moment load is a tilting or overturning force.
What is ESD protection for slew ring bearings and when is it most needed?
ESD protection means static control. It helps prevent static electricity from building up or discharging through the bearing. It is most needed around electronics, sensors, robotics, medical equipment, diagnostic devices, and clean environments.
What is the difference between ball bearing slew rings and plain slew ring bearings?
Ball bearing slew rings use rolling balls for smooth rotation and higher load support. Plain slew ring bearings use self-lubricating sliding pads for grease-free motion and lower maintenance.
Do plain slew ring bearings need grease?
No. Plain, self-lubricating slew ring bearings are designed for grease-free operation and reduced maintenance.
Where are compact slew ring bearings used?
They are used in solar tracking systems, medical equipment, robotics, positioning platforms, packaging equipment, automation systems, and marine applications.
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