Centreless grinding is a precision machining process used to remove material from cylindrical workpieces without the need for a central spindle or fixture. Instead of being clamped in place, the workpiece is supported between two rotating wheels: a grinding wheel and a regulating wheel. This unique method allows for continuous, high-speed grinding, making it ideal for mass production of small to medium-sized cylindrical components. How Does Centreless Grinding Work? 1. The Grinding Wheel – This abrasive wheel removes material from the workpiece, shaping it to the desired dimensions with high accuracy and a smooth finish. 2. The Regulating Wheel – This rubber-bonded wheel controls the workpiece's rotation and feed rate, ensuring precise and even grinding. 3. The Work Rest Blade – Positioned between the two wheels, the work rest blade supports the workpiece and determines its height, which is critical to achieving the correct size and shape. Types of Centreless Grinding - Through-Feed Grinding – The workpiece moves continuously in a straight line between the wheels, making it ideal for high-volume production. - In-Feed Grinding – Used for more complex shapes, where the workpiece is held in place as the grinding wheel shapes specific sections. - End-Feed Grinding – Suitable for tapered components, where the workpiece is fed in and removed at an angle. Key Benefits of Centreless Grinding ✔ High Precision – Achieves tight tolerances and excellent surface finishes. ✔ Efficient & Fast – Continuous operation allows for high-speed production. ✔ Versatile – Suitable for a wide range of materials, including metals and composites. ✔ Cost-Effective – Eliminates the need for workpiece fixtures, reducing production costs. Centreless grinding is widely used in industries such as aerospace, automotive, and manufacturing, producing components like shafts, pins, and tubing with exceptional accuracy and consistency.