Robins Machines

VR 10 P

Description

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.

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Product Details

Product Details

Specifications

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

Features

  • 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

Working Accuracy

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Compare model Specs

Current Model
Model:VR 10 P
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 Range90 - 315 mm
Valve Face Angle Range15° - 60°
Valve Grinding Wheel Diameter7"
Butt Grinding Wheel Diameter3"
Valve & Butt Grinding Wheel Speed4200
Valve Rotation SpeedVariable speed 0 min - 300 max
Coolant Capacity (with Cabinet)20 ltr.
Valve Grinding Motor Power90 watt, 220v 3 phase 50/60Hz
Grinding Oil Pump Power / Flow12 LPM
Electrical Supply115/230v 1 phase 50/60 Hz
Net Weight (Approx.)265 kg
Shipping Weight (Approx.)300 kg
Comparison Model
Model: VR 5
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 Range90 - 315 mm
Valve Face Angle Range15° - 60°
Valve Grinding Wheel Diameter± 10 Degrees
Butt Grinding Wheel Diameter7"
Valve & Butt Grinding Wheel Speed3"
Valve Rotation SpeedVariable speed 0 min - 300 max
Coolant Capacity (with Cabinet)4 ltr.
Valve Grinding Motor Power90 watt, 220v 3 phase 50/60Hz
Grinding Oil Pump Power / Flow12 LPM
Electrical Supply115/230v 1 phase 50/60 Hz
Net Weight (Approx.)150 kg
Shipping Weight (Approx.)191 kg