The VR 10P valve and valve-stem end grinding machine is engineered for high-accuracy valve machining in racing engine shops and cylinder-head remanufacturing. An air-operated, six-ball precision chuck eliminates collets and centers the valve stem with high repeatability. This ensures true concentricity between the valve face and stem, which directly improves sealing, heat transfer, and valve durability.
For continuous-duty operation, the VR 10P incorporates a 20-liter coolant/oil reservoir with replaceable paper filtration. The system effectively removes abrasive particles, reduces recirculated grit, and maintains stable grinding conditions. This improves surface finish quality, and maintains machining accuracy.
| Valve Stem Diameter Range (Standard Chuck) | 4 - 14 mm |
| Valve Stem Length Range (Standard Chuck) | 62 - 260 mm |
| Valve Stem Diameter Range (Mini Chuck) | 3.5 - 7.1 mm |
| Valve Stem Length Range (Mini Chuck) | 31 - 200 mm |
| Valve Total Length Range | 90 - 315 mm |
| Valve Face Angle Range | 15° - 60° |
| Valve Grinding Wheel Diameter | 7" |
| Butt Grinding Wheel Diameter | 3" |
| Valve & Butt Grinding Wheel Speed | 4200 |
| Valve Rotation Speed | Variable speed 0 min - 300 max |
| Coolant Capacity (with Cabinet) | 20 ltr. |
| Valve Grinding Motor Power | 90 watt, 220v 3 phase 50/60Hz |
| Grinding Oil Pump Power / Flow | 12 LPM |
| Electrical Supply | 115/230v 1 phase 50/60 Hz |
| Net Weight (Approx.) | 265 kg |
| Shipping Weight (Approx.) | 300 kg |
Air-operated quick-action chuck using a six-ball precision centering system
Vacuum-hardened tool-steel chuck for high concentricity and wear resistance
Hardened dovetail slideways for stable and accurate movement
Motor controller converts single-phase input power to three-phase for the main grinding motor
Variable valve rotation speed, adjustable up to 250 rpm
Butt grinding and chamfering unit with micrometer adjustment and adjustable V-nest
Integrated dressing devices for both the main grinding wheel and the butt wheel
Main grinding wheel: 7″ (180 mm) diameter, general-purpose specification
Optional grinding wheels available for stainless steel and titanium (sold separately)
Diamond dresser supplied for the main grinding wheel
Butt grinding wheel: 3″ (75 mm) diameter
Diamond dresser supplied for the butt wheel
Tools and wrenches included, along with specialized chuck-service tools
Quick-change chuck design for fast transitions between chuck sizes