Click the WhatsApp button to chat, or leave a message, and we will contact you within 12 hours.
The GS-100A Valve Refacer is a specialized, high-efficiency machine tool designed for re-facing various types of engine valves. It is the ideal solution for one-off repair jobs or small batch production in automotive workshops.
Motorcycle valve grinder
Desktop valve refacing machine
Universal valve grinder
Automotive cylinder head tool
Small engine valve repair
This machine is capable of grinding valves for automobiles, tractors, and motorcycles. It features a compact design ("small volume"), flexible operation, and user-friendly controls. Despite its small footprint, the GS-100A delivers high machining precision and a superior surface finish, making it an essential tool for engine rebuilding and maintenance.


Wide Application Range: Capable of handling valve stem diameters from 3.5mm to 20mm and valve heads from 12mm to 100mm, covering everything from small motorcycle engines to heavy-duty tractor engines.
High Precision: Designed for accurate angle grinding (10° - 57°) to ensure perfect valve seating and engine sealing.
Variable Speed Control: The valve driving motor features adjustable speeds (120-750 rpm), allowing operators to choose the optimal rotation for different valve materials and sizes.
Compact & Efficient: The machine occupies minimal workshop space while offering a complete cooling system (with a 4L tank) to prevent overheating during grinding.
Dual Wheel Design: Equipped with a main grinding wheel for the valve face and a cup wheel, typically used for grinding the valve stem ends (chamfering/squaring).


| Specification | Metric (mm) | Imperial (inch) |
| Valve Stem Diameter (Min - Max) | 3.5 - 20 mm | 0.16" - 0.55" |
| Valve Head Diameter (Min - Max) | 12 - 100 mm | 0.47" - 4.00" |
| Valve Length (Min - Max) | 70 - 290 mm | 2.76" - 11.42" |
| Angle Grinding Range | 10° - 57° | 10° - 57° |
| Main Wheel Size (Dia × Width) | 200 × 15 mm | 7.87" × 0.59" |
| Cup Wheel Diameter | 100 mm | 3.94" |
| Grinding Wheel Travel | 90 mm | 3.54" |
| Valve Feed Travel | 90 mm | 3.54" |
| Spindle Motor Power | 550 W | - |
| Spindle Speed | 2900 rpm | - |
| Valve Driving Motor Power | 180 W | - |
| Valve Driving Speed | 120 - 750 rpm | - |
| Coolant Motor Power | 100 W | - |
| Coolant Tank Capacity | 4 L | 1 US gal |
| Air Supply Max | 6 bar | 87 psi |
| Power Supply | 380V/50Hz/3ph or | 220V/60Hz/3ph |
| Overall Dimensions (L×W×H) | 1050×1000×680 mm | 41.3"×39.4"×26.8" |
| Net Weight (Approx.) | 180 kg | 396.8 lbs |
