Chromium Plating for Ball Screw Surface Treatment
1. Enhancement of Wear Resistance
The chromium plating layer exhibits high hardness and a low friction coefficient, which significantly enhances the wear resistance of ball screw assemblies and reduces surface wear during prolonged operation.
2. Improvement of Corrosion Resistance
The chromium layer exhibits chemical stability in various environments, including humid air, alkaline solutions, nitric acid, sulfides, carbonates, and organic acids. It forms a dense protective barrier, enhancing the linear motion ball screw’s corrosion resistance in harsh conditions.
3. Strengthening of Hardness and Load-Bearing Capacity
After chromium plating, the surface hardness of ball screw kits can reach 55-65 HRC (Rockwell hardness), far exceeding that of ordinary steel. This enables them to withstand heavier loads, improving structural strength and durability.
4. Optimization of Appearance Texture
The chromium plating layer has excellent light reflectivity, giving the ball screw surface a bright and aesthetic metallic texture, thus enhancing its appearance quality.
5. Restoration of Dimensional Deviation
The chromium plating process can compensate for dimensional loss caused by wear or machining errors in linear ball screws, restoring their precision specifications.
6. Enhancement of High-Temperature Resistance
The chromium layer has excellent thermal stability: it does not discolor below 480°C, starts to oxidize above 500°C, and only shows significant hardness reduction at 700°C. This ensures the ball screw maintains stable performance within a certain temperature range.
7. Prolongation of Service Life
Chromium plating treatment significantly extends the service cycle of high-accuracy ball screws, reducing equipment maintenance and replacement frequency.
Advantages of Hojama high-performance ball screws:
1. High precision
We can provide you with various accuracy grades for linear ball screws, C3 and C5. And the repeatable position accuracy is up to 8μm.
2. Low friction
Hojama ball screws adopt a unique recirculating ball system. The balls roll within the raceways between the screw shaft and the nut, replacing traditional sliding friction with rolling friction and significantly reducing the friction coefficient.
3. Smooth Operation
Due to its Low friction, the ball screw is running smoothly during the operation.
