Ball Screw Support Bearings

Description

Basic Parameters

Ball Screw Support Bearings are high-precision angular contact ball bearings engineered to meet the demanding requirements of ball screw-driven systems in machine tools, semiconductor equipment, and automation systems. Designed to handle combined axial and radial loads, these bearings feature a contact angle of 30° or 60°, offering enhanced thrust load capacity and rigidity.

Manufactured to ultra-high precision standards such as ISO P4 or ISO P2, they are available with factory-set preloads (light, medium, or heavy) to eliminate backlash and ensure high positioning repeatability. The inner and outer rings are made from high-purity bearing steel (e.g., SUJ2), with options for hybrid ceramic balls for high-speed or high-temperature applications. Cage materials vary by application and include phenolic resin, polyamide, or steel.

These bearings are pre-lubricated with high-performance grease or compatible with oil lubrication systems for long service life under continuous operation. Standard bore diameters range from 8 mm to 100 mm, with configurations such as back-to-back (DB), face-to-face (DF), tandem (DT), or universal matching (DU) to suit diverse load and space constraints.

Their high rigidity, low friction, and excellent rotational accuracy make them ideal for precision ball screw support in CNC machining centers, measuring instruments, and robotic positioning stages.

 

 

 

 

Product Application

1. Machine Tools and CNC Equipment

Ball Screw Support Bearings are essential components in CNC lathes, milling machines, and machining centers. They provide the rigidity and axial load capacity needed to accurately support the rotating ball screw shafts, ensuring precise table positioning and tool movement. By minimizing backlash and improving positioning accuracy, they contribute directly to higher machining quality and productivity.

2. Semiconductor and Electronics Manufacturing

In semiconductor processing equipment—such as wafer steppers, handlers, and inspection systems—Ball Screw Support Bearings enable ultra-smooth, low-vibration linear motion. Their high speed and low noise performance are crucial for delicate operations where micron-level positioning and cleanroom compatibility are required.

3. Automation and Robotics

Robotic arms, linear actuators, and pick-and-place systems rely on these bearings for stable, high-speed linear motion. They can handle rapid acceleration and deceleration. At the same time, they maintain consistent axial stiffness. This makes them ideal for dynamic automation environments. In these settings, cycle time and reliability are critical.

4. Medical and Precision Instruments

Medical imaging machines, lab automation systems, and coordinate measuring machines (CMMs) utilize Ball Screw Support Bearings for quiet, accurate, and repeatable motion. Their low-friction characteristics and high positional stability are essential in applications involving sensitive diagnostic procedures and ultra-precise measurements.

5. Industrial Machinery and Injection Molding

Additionally, these bearings are widely used in plastic injection molding machines. They are also common in heavy-duty industrial machinery. In both applications, they support large ball screws under high axial forces. Their robust design helps ensure consistent mold positioning and smooth, repeatable operation under harsh conditions.

conclusion

Ball Screw Support Bearings are indispensable in any high-precision linear motion application. They provide excellent axial rigidity. They also offer high-speed capability and long-term reliability. This makes them ideal for modern manufacturing and automation systems. These systems demand both accuracy and efficiency.