Planetary Roller Screws

Planetary Roller Screws

– Ultra-High Load Precision Linear Actuation System

     The Planetary Roller Screws, a premium linear drive solution engineered for extreme load capacity, high precision, and long service life. Unlike traditional ball screws, planetary roller screws utilize multiple threaded rollers in contact with the screw shaft, enabling superior load distribution, enhanced rigidity, and exceptional positioning accuracy.

Designed for demanding applications, these systems provide high efficiency, minimal backlash, and excellent durability, even under continuous high-load and high-speed conditions. With their advanced rolling contact mechanism, planetary roller screws significantly outperform conventional solutions in terms of load capacity, lifespan, and reliability.

Manufactured using precision machining and advanced grinding technologies, our planetary roller screws are ideal for high-performance industries such as aerospace, robotics, heavy machinery, and precision automation.

Key Features

• Ultra-High Load Capacity: Multiple rollers distribute load evenly for superior strength
• High Precision & Repeatability: Ideal for critical positioning applications
• Long Service Life: Reduced wear due to optimized rolling contact
• High Rigidity: Maintains stability under heavy loads and dynamic conditions
• Low Backlash: Preloaded configurations for precise motion control
• High Efficiency: Smooth rolling mechanism with minimal friction

Applications

• Aerospace actuation systems
• Industrial robots and heavy-duty automation
• Electric cylinders and servo actuators
• Injection molding and forming machines
• High-load CNC and precision machinery

Manufacturing Process

• CNC Precision Machining (shaft and nut pre-processing)
• Thread Grinding (high-precision screw and roller threads)
• Roller Manufacturing (precision turning and grinding of planetary rollers)
• Heat Treatment (carburizing, quenching, and tempering for strength and wear resistance)
• Superfinishing (for ultra-smooth thread surfaces)
• Assembly (roller integration, preload adjustment, and nut assembly)
• Surface Treatment (anti-corrosion coating or passivation)
• Final Inspection (lead accuracy, backlash, load capacity, and smoothness testing)

Tolerance & Dimensions

• Lead Accuracy: Up to C3 / C5 grade (±0.008–0.018 / 300 mm)
• Positioning Accuracy: ±0.005–0.01 mm
• Repeatability: ±0.003–0.005 mm
• Backlash: ≤0.005 mm (preloaded)
• Straightness: ≤0.02 mm / 1000 mm
• Surface Roughness: Ra ≤ 0.2–0.4 μm
• Dimensional Tolerance: ±0.005–0.02 mm

OEM / ODM Manufacturing Capability

As a professional OEM/ODM manufacturer, we specialize in high-end linear motion and transmission components. With advanced grinding, heat treatment, and assembly technologies, we deliver fully customized planetary roller screw solutions tailored to your most demanding applications.

• Custom diameters, leads, and travel lengths
• Preload and backlash customization
• Material selection for extreme load and durability
• Surface treatment for corrosion resistance
• Integration with servo actuators and linear modules
• Logo engraving and private labeling
• Rapid prototyping and scalable production

If you are sourcing a “Planetary Roller Screws”, high load screw actuator, precision roller screw, CNC roller screw, heavy duty linear actuator, roller screw assembly OEM, high precision motion screw,we offer reliable, precision-engineered solutions tailored to your market. Contact us now for OEM customization, samples, or bulk quotations.