Single Row Four-Point Contact Ball Slewing Bearings
Single row four-point contact ball slewing bearings are compact rotary bearings designed to accommodate combined axial loads, radial loads and tilting moments. Available in non-gear, external gear and internal gear configurations for industrial machinery, rotary platforms, positioning systems and heavy-duty applications.
Single Row Four-Point Contact Ball Slewing Bearing Solutions
Single row four-point contact ball slewing bearings use a specially designed raceway geometry that allows the balls to accommodate loads acting in different directions. This enables a single bearing to support axial loads, radial loads and tilting moments.
Compared with multi-row slewing bearing designs, the single-row configuration provides a compact and relatively lightweight solution where installation space, bearing weight and rotational resistance are important considerations.
Our single row four-point contact ball slewing bearings are available in non-gear, external gear and internal gear configurations. Replacement bearings can also be manufactured according to original bearing designations, dimensions, mounting holes or technical drawings.
Although the available range starts from 100 mm bore, our production capability is particularly focused on large and heavy-duty slewing bearings for industrial equipment, with sizes extending to approximately 4000 mm bore diameter.
Single Row Four-Point Contact Slewing Bearing Types
Select the gear configuration according to the drive system, installation space and equipment design.
Gearless Four-Point Contact Slewing Bearings
Non-gear slewing bearings are designed for systems where rotation is provided by an external drive mechanism such as friction wheels, chains or other transmission arrangements.
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External Gear Slewing Bearings
External gear designs integrate gear teeth on the outside diameter of the bearing ring, allowing direct engagement with a pinion for rotary drive systems.
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Internal Gear Slewing Bearings
Internal gear designs position the gear teeth inside the bearing ring. This can provide a compact external envelope while allowing direct pinion drive.
View ProductsFour-Point Contact Raceway Design
The defining feature of this bearing type is its four-point contact raceway. The raceway geometry enables each ball to establish multiple contact points with the raceways under suitable loading conditions.
This configuration allows the bearing to accommodate combined loading without requiring separate radial and axial bearing arrangements in many applications.
- Bidirectional axial load capacity
- Radial load capacity
- Tilting moment capacity
- Compact cross-section
- Non-gear and geared configurations
- Suitable for integrated rotary mechanisms
Typical Configuration
Manufacturing Options
Applications of Single Row Four-Point Contact Slewing Bearings
Suitable for industrial equipment requiring compact rotary support and combined load capability.
Rotary Platforms
Rotary platforms and positioning systems requiring stable and controlled rotational movement.
Industrial Turntables
Turntables, indexing equipment and rotary machinery requiring combined load support.
Welding Positioners
Welding and fabrication equipment requiring compact rotary bearing arrangements.
Industrial Machinery
Heavy industrial machinery requiring axial, radial and tilting moment load capability.
Material Handling
Material handling and conveyor equipment incorporating rotary mechanisms.
Custom Rotary Equipment
Custom machinery where a single-row four-point contact bearing provides an efficient rotary solution.
Why Choose Our Slewing Bearings?
OEM Manufacturing
Replacement and OEM bearings can be manufactured according to original designations, dimensions, mounting arrangements or technical drawings.
Multiple Gear Configurations
Non-gear, external gear and internal gear configurations are available for different rotary transmission systems.
Large-Diameter Capability
Our production range covers large industrial slewing bearings, with bore diameters extending up to approximately 4000 mm.
Factory Direct Supply
Manufactured in Wafangdian, China, with direct technical communication and experience supplying industrial bearing solutions to international customers.
Large Industrial Slewing Bearing Manufacturing
Large slewing bearings require controlled manufacturing processes, accurate raceway machining and reliable dimensional inspection.
Our factory in Wafangdian focuses on medium and large industrial bearings and supports standard replacement orders as well as customized OEM projects.
Customers can provide a bearing designation, existing bearing dimensions, mounting drawing or application requirements for technical evaluation.
Learn About Our FactoryLooking for a Replacement or OEM Slewing Bearing?
Browse selected single-row four-point contact ball slewing bearing designations for replacement and OEM applications. The table focuses on larger sizes with bore diameters above 200 mm.
The table shows selected representative designations. Other dimensions, gear configurations and mounting arrangements are available. Please contact us if you need a specific replacement designation or OEM equivalent.
Frequently Asked Questions
What is a single row four-point contact ball slewing bearing?
It is a slewing bearing using a single row of balls and a four-point contact raceway. The design allows the bearing to accommodate axial loads in both directions, radial loads and tilting moments.
What is the difference between non-gear and geared types?
Non-gear bearings rely on an external drive mechanism, while geared designs incorporate external or internal gear teeth for direct pinion-driven rotation.
Are large-diameter slewing bearings available?
Yes. The product range covers bore diameters from approximately 100 to 4000 mm, with a particular focus on large industrial slewing bearings.
Can you manufacture replacement slewing bearings?
Yes. Replacement bearings can be manufactured according to original designations, dimensions, mounting arrangements, samples or technical drawings.
Can the gear and mounting dimensions be customized?
Yes. Gear dimensions, mounting holes, flange dimensions, materials, clearances and other specifications can be discussed according to the equipment requirements.
What information is needed for a replacement bearing?
The bearing designation, bore and outside diameter, height, mounting dimensions, gear configuration or original drawing can be used for technical evaluation.
Need a Replacement or OEM Slewing Bearing?
Send us your bearing designation, dimensions, drawing or application requirements. Our engineering team can evaluate the specification and provide a suitable manufacturing solution.