Rottler VR10

Valve Refacing Machine with Turcite Slideways

Machine Operations

  • Valve Refacing

  • Applicable Industries

  • Cylinder Head Shop
  • Diesel Rebuilder
  • Drag Racing
  • Earth Moving
  • Engine Building
  • Gas Compression Engine
  • Heavy Duty
  • Jobber Shop
  • Large Engine
  • Locomotive Engine
  • Marine Workboat
  • Motorcycle Engine
  • Oil & Gas
  • Performance Racing
  • Power Generation
  • Remanufacturing
  • Small Engines
  • Tractor Pulling
  • Vintage Engine Rebuilding

  • PDF Resources

    VR10 Brochure

    The VR10 sets new standards in speed and accuracy for Performance Racing and Remanufacturing cylinder head work. The air operated 2 x 3 Ball Precision Chuck System eliminates collets. Valve face is machined concentric to the valve stem for improved sealing, better heat transfer and reduces mechanical stresses on valves.

    • Precision Hardened Tool Steel Chuck System - Pneumatic Operated Quick Action 2 X 3 Ball Precision Chuck driven by large, heavy duty variable speed gear motor. The 2 X 3 ball chuck allows a wide range of valve stem diameters to be ground without changing any parts - no collets or wrenches! The 2 X 3 ball chuck gives extremely accurate run-out for improved sealing, better heat transfer and reduces mechanical stresses on valves.
    • 3 Phase Grinding Wheel Motor - Single Phase power supply is converted to 3 phase to give smooth grinding without any vibrations.
    • Turcite Coated Slideways - Low Friction for smooth stroking of Grinding Wheel over Valve.
  • Turcite Coated Slideways - Turcite is a low friction machine slideway material that allows smooth controlled action for easy stroking of the wheel slide reducing operator fatigue and improving surface finish on the valve seat face for improved sealing and cooling.  
  • 3 Phase Grinding Motor - 3 phase motors run without vibrations compared to single phase motors. VR10 has convertor for single phase power supply. 
  • Grinding Wheels - The VR10 is supplied standard with vitrified wheels, grinding oil and two diamond dressers. Special wheels available for grinding difficult metals such as Titanium, Inconell, etc.
  • Solid Cast Iron Construction - Dampens harmonics, eliminates chatter, and maintains accuracy for a long service life.
  • Large Capacity Coolant - Tank and filter system built into optional storage cabinet.
  • Fine Feed Handle and Depth Stop - Allows valves to be ground to the exact same length - a requirement for today's computer controlled engines.
  • Stem/Butt End Chamfering - Special stop arm allows the valve to be pressed against the stop while rotating resulting in equal chamfer on valve end. Stop arm pivots out of the way when not in use.
  • Stem/Butt End Grinding - Grind Valve Stem End square to the valve centerline. The V rest allows all valves in a set to be ground to the same distance from valve seat to stem end - essential for overhead camshaft type cylinder heads. Exact amount of material removed from the stem end can be measured with the micrometer adjustment system.
  • Rocker Arm Attachment - Optional - Allows refacing of most shaft type rocker arms.
  • Diamond Wheel Dresser - Main Wheel Diamond Dresser is mounted on the machine ready for quick dressing with minimum material removal. Just swing the dresser into place and the point of the diamond is exactly where it was set for the last dressing
  • Stroking Handle - Stroking handle moves the grinding wheel back and forth over the valve. Turcite Slideway gives smooth action during stroking.
  • Base Cabinet - Optional Base Storage Cabinet includes a large 5 gal (20 liter) removable coolant tank with replaceable paper filter system. Coolant tank has drain plug and is easily removed for quick cleaning. This large capacity filtered coolant system allows machine use for months and months with no cleaning or maintenance required saving time and money.
  • Pneumatic Operated Quick Action 2 X 3 Ball Precision Chuck System
  • Grinding wheel slideways are coated with Turcite for reduced friction and extended life
  • Motor controller converts single phase incoming power to 3 phase motor for vibration free grinding
  • Variable Valve Rotation Speed up to 250RPM
  • End Stop System to grind valves in a set to equal length from butt end to seat face
  • Butt Grinding and Chamfering Device including micrometer and adjustable V Nest
  • Main Wheel and Stem End/Butt Wheel Dressing Devices mounted on the machine
  • Main Grinding Wheel 7.0” (180mm) Diameter, General Purpose (VTRW-8)
  • Butt Grinding Wheel 3.0” (75mm) Diameter, General Purpose
  • Diamond dresser for dressing main and butt grinding wheel (VTRW-4)
  • Grinding Oil Pump and Grinding Oil
  • Adjustable Work light
  • Tools and Wrenches including chuck assembly tool
  • Variable Valve Rotation Speed allows the operator to adjust surface speed for different diameter valves for best surface finish for a wide range of valve head diameters from small multi-valve to large diesel valves.

    Control Panel features Variable Chuck Speed Control, Valve Counter and Selector for Valve Grinding or Wheel Dressing.
    VR10 Machine Specifications American Metric
    Base CabinetOptional
    Valve Stem Diameter Range (with Standard Chuck)0.157"-0.562"4mm-14mm
    Valve Stem Length Range (with Standard Chuck)2.125"-10.250"54mm-260mm
    Valve Head Diameter Range0.781"-4.000"20mm-102mm
    Valve Total Length Range3.500"-12.500"89mm-317mm
    Valve Face Angle Range15°-50°
    Valve Grinding Wheel Diameter7.000"178mm
    Butt Grinding Wheel Diameter3.000"76mm
    Valve & Butt Grinding Wheel Speed3450 RPM at 60Hz & 2850 at 50Hz
    Valve Rotation Speed20 RPM
    Coolant Capacity (with Cabinet)5 Gallon20 Liter
    Valve Grinding Motor Power0.5 HP, AC0.375 Kw, AC
    Grinding Oil Pump Power Flow0.025HP - 300GPH0.02KW - 20LPM
    Valve Rotation Motor Power0.083 HP, DC0.062 Kw, DC
    Valve Stem Diameter Range (with Optional Small Chucks - VR7 Only0.138"-.750"3.5mm-19mm
    Valve Stem Length Range (with Optional Large Chucks - VR7 Only)1.220"-10.250"31mm-260mm
    Coolant Capacity (without Cabinet - VR7 Only)1 Gallon5 Liter
    Dimensions - Machine (without base cabinet - VR7 Only)36D x 27W x 25" H902D x 686W x 622mm H
    Dimensions - Shipping (without base cabinet - VR7 Only)27D x 34W x 25" H686D x 864W x 635mm H
    Machine Weight (without base cabinet - VR7 Only)420 lbs191 Kgs
    Dimensions - Machine33D x 48W x 63" H 838D x 1220W x 1600mm H
    Dimensions - Shipping36D x 36W x 57" H 915D x 915W x 1450mm H
    Machine Weight506 lbs230 kg
    Electrical Requirements115 or 230V, 20 or 10A, 50/60Hz, 1Ph
    Air Requirements cfm @ 90 psi l/min @ 6 bar
    Paint Color CodeRAL9002 (Grey White)