Product Details

Polished steel round bar


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Product Introduction

Centerless Ground Bar (Polished Bar)

Centerless Ground Bar (also known as Ground Bar or Polished Round Bar) is a high-end steel product processed via precise "Centerless Grinding". Unlike standard cold-drawn bars, Centerless Ground Bars have extremely strict requirements for dimensional tolerance, roundness, and surface roughness, featuring a mirror-like shiny surface.

Designed specifically for "High-Precision Applications". Due to extremely tight diameter tolerances, customers do not need to perform outer diameter turning or grinding. They can be used directly as precision shafts, guide rods, or automation parts, significantly shortening the machining process and ensuring final product operational accuracy.

➤ Specifications
▪️ Dimensions (Diameter):3mm ～ 100mm
▪️ Material:S45C, SUS303, SUS304, SCM440, SUJ2
▪️ Cutting Service:Standard lengths (2M / 3M / 6M), precision cutting available upon request

➤ Product Features
▪️ Extreme Dimensional Accuracy: Through precision grinding, diameter tolerance is controlled to h7 or even h6 grades, ensuring precise fit with bearings and bores.
▪️ Mirror Surface Finish: Extremely low surface roughness, bright and smooth, reducing friction coefficient, wear, and noise during operation.
▪️ Excellent Roundness & Straightness: Ensures the bar does not wobble or vibrate under high-speed rotation, improving equipment operational stability.
▪️ Ready-to-Use Material: Delivered with a finished surface, customers can skip tedious processes like rough turning, fine turning, and grinding, proceeding directly to backend machining.

➤ Applications
▪️ Precision Shafts & Transmission Components: Motor shafts, fan shafts, pump shafts, gearbox drive shafts.
▪️ Automation & Linear Motion: 3D printer guide rods, pneumatic cylinder piston rods, linear slides, automation equipment guide pillars.
▪️ OA / Office Machines: Printer rollers, scanner slider bars, and other parts requiring high straightness.
▪️ Automotive & Motorcycle Precision Parts: Shock absorber shafts, starter motor shafts, steering mechanism parts.
 
📞 Contact Us
If you have any needs for Centerless Ground Bar, feel free to contact Guokai Steel!
📧 Email: sales@guokaisteel.com.tw
📩 Official Line Account: @guokai
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