Four-Point Contact Ball Slewing Bearing Solutions

The four-point contact ball slewing bearing is a special type of bearing with a compact structure and high load-carrying capacity. It is capable of withstanding axial loads, radial loads, and tilting moments simultaneously. Depending on the application requirements, customers can choose between internal gear, external gear, or gearless designs, making installation and operation more convenient.
This design allows the bearing to transmit loads in multiple directions through a single bearing element, making it widely used in cranes, engineering machinery, radar systems, wind turbines, robotics, and medical equipment.

1. Structural Features

Various gear configurations:
According to the gear type, this series is available with internal gear, external gear, or without a gear ring.

Four-point contact design:
Each steel ball forms four contact points with the raceways, allowing the bearing to carry axial loads in both directions as well as a certain degree of radial load.

Easy installation:
The inner or outer ring is usually equipped with mounting holes, allowing direct bolting to the equipment structure without complex installation procedures.

Sealing and lubrication design:
Optional sealing arrangements prevent grease leakage and protect against contamination from dust or debris, extending bearing service life.

2. Performance Advantages

High load capacity: Capable of carrying large axial, radial, and tilting moment loads, especially suitable for applications with high overturning moments.

Smooth rotation: Low rolling friction and starting torque ensure stable and efficient operation.

Compact structure and space-saving: Integrates supporting and rotating functions in a single unit, significantly reducing equipment size and weight.

Easy maintenance: Convenient lubrication; certain models can achieve maintenance-free operation.

3. Application Fields

Construction machinery: Excavators, cranes, concrete pump trucks

Wind energy: Yaw and pitch systems

Industrial automation: Robotic arms, rotary tables

Medical equipment: CT scanners, surgical tables

Port and transportation machinery

4. Selection Guidelines

When selecting a four-point contact ball slewing bearing, the following factors should be considered:

Type and magnitude of working loads

Rotational speed and operating frequency

Installation method and space constraints

Working environment (temperature, dust, corrosion resistance)

Our company can customizefour-point contact ball slewing bearings of various specifications according to customer drawings and working conditions.
Internal gear, external gear, and gearless designs are available. Our products feature high precision, excellent wear resistance, and have earned wide recognition from customers worldwide.

For inquiries, please contact us at [email protected].