High Precision Ground Steel Bar – Centerless Ground
Ultra-Precision Steel Bars with Tolerance as Tight as ±0.01mm
YaDa Metal produces high-precision centerless ground steel bars for applications that demand exceptional dimensional accuracy and superior surface finish. Starting from premium cold drawn bars, we perform precision centerless grinding to achieve ultra-tight tolerances and mirror-like surfaces. Our precision ground bars are widely used in high-end machinery, automotive components, linear motion systems, and precision engineering applications.
Key Features
Ultra-Tight Tolerance — ±0.01mm to ±0.03mm (higher precision than cold drawn)
Ultra-Smooth Surface — Ra 0.2–0.4μm (mirror-like finish)
Excellent Straightness — ≤ 0.1mm/m
Minimal Runout — Ideal for high-speed rotation and precision shafts
Improved Wear Resistance — Perfect for sliding and rotating applications
Wide Material Range — Carbon steel, alloy steel, and stainless steel
Custom Sizes Available — Special diameters and lengths made to order
Specifications
| Parameter | Details |
|---|---|
| Product Name | Precision Ground Steel Bar (Centerless Ground) |
| Tolerance | ±0.01mm – ±0.03mm |
| Diameter Range | 6mm – 150mm |
| Length Range | Up to 6000mm |
| Surface Roughness | Ra 0.2–0.4μm |
| Straightness | ≤ 0.1mm/m |
| Roundness | ≤ 0.005mm |
| Materials | 1045, CK45, 4140, SCM440, 304, 316, 17-4PH |
| Standards | GB, ASTM, JIS, DIN |
Material Options & Applications
| Material | Key Features | Common Applications |
|---|---|---|
| 1045 / CK45 | Good strength & machinability | Precision shafts, spindles, linear guides |
| 4140 / SCM440 | High strength & wear resistance | Automotive camshafts, hydraulic piston rods |
| 304 / 316 | Corrosion resistant | Food machinery, medical equipment, marine |
| 17-4PH | High strength + corrosion resistance | Aerospace components, high-end machinery |
Applications
High-precision machinery spindles and shafts
Linear motion systems and guide rails
Automotive engine and transmission components
Hydraulic and pneumatic precision parts
Medical and laboratory equipment
Aerospace and defense applications
CNC machine tool components
Why Choose YaDa Precision Ground Bars?
Higher Precision — Significantly tighter tolerance than standard cold drawn bars
Full In-House Process — Cold drawing plus precision centerless grinding
Strict Quality Control — 100% inspection with advanced measuring equipment
Competitive Pricing — Factory direct with stable quality
Fast Delivery — Popular sizes in stock, custom orders within 15–25 days
Get Your Custom Quote Today
We offer free samples for qualified orders.
Contact us now for the best price and fast delivery!
Email: [email protected]
Tel: +86 13920216030
