Centerless grinding

Centerless grinding is a technology that achieves efficient and precise machining of external cylindrical surfaces through “centerless” support. Unlike traditional center-hole positioning, this process utilizes the coordinated action of a support plate, guide wheels, and a rotating grinding wheel
to grind cylindrical workpieces in a free-running state. With its high efficiency, precision, and adaptability, centerless grinding has become a core process for mass production scenarios such as bearings, transmission components, and precision shafts,
widely applied in automotive, home appliances, hydraulic components, and aerospace industries.

Process Principles and Core Advantages

1. Three-Point Stabilization, Free Grinding

The workpiece rests between the support plate and guide wheel, driven by friction for rotation. The high-speed grinding wheel removes material. By adjusting the guide wheel angle and grinding wheel speed,
workpiece roundness and dimensional accuracy are precisely controlled, eliminating deformation or vibration caused by traditional clamping.

2. Dual Enhancement of Efficiency and Precision

High-Efficiency Production: Eliminates setup time, achieving processing cycles of dozens of pieces per minute, ideal for large-scale continuous production.
Precision Assurance: Roundness error controlled within ±1μm, surface roughness reaching Ra0.4μm, meeting IT5-IT7 tolerance requirements.
Flexibility: Supports both through-grinding (through-type) and end-grinding (cut-in-type) modes, accommodating workpieces of varying lengths and diameters.