Comec RV516.ASM Centerless Valve Refacing Machine

Stock #1244New Machine; Call for Pricing

The RV516 is among the fastest and most accurate valve grinding machines now available on the market, thanks to its technical solutions. The centerless grinding system - that makes the valve rotate on its stem - ensures the perfect concentricity between the head and the stem (within 0.01 mm) and can operate a wide range of valve stem diameters (from 4 up to 16 mm) without the need for replacing any collet or spindle.

The valve drive system is performed by three motorized rollers. The top roller is tilted to automatically drive the valve on an adjustable control switch. This guarantees to accurately control each valve's lenght and to avoid to manually feed the valve towards the grinding wheel.

Images may show the product equipped with optional accessories




Standard equipment
  • Movable head (for valves of up to 260 mm/ 10" long)   
  • Abrasive grinding wheel
  • Wheel dresser
  • Wheel dressing diamond
  • Cooling system complete with pump and settling tank
  • Emulsifiable liquid (1 lt.)
  • Wrench set
  • Instruction manual


Valve stem diameter 4÷16 mm / .157"- .630"
Valve stem length 55÷330 mm / 2.16"- 13"
Valve head diameter 114 mm / 4.49"
Face angles 0°÷ 60°
Grinding wheel speed 2800 rpm
Main abrasive grinding wheel diameter 215 mm / 8.46"
Butt abrasive grinding wheel diameter (ASM516) 100 mm / 3.94"
Dimensions (LxWxH) 700x600x700 mm / 27.56"x 26.62"x27.56"
Weight 142 Kg / 313 lbs.

Power Requirements: 220 Volt/ 1 Phase/ Full Load AMPS: 3,6A

Shipping information: 42.1" x 23.6" x 35.8"

Shipping weight: 370 lbs.


Accessories and spare parts

Base cabinet

Rocker arm radius grinding attachment for engine valves

Rocker arm radius grinding attachment

Centering chuck for dia. 3-4-5 mm valve stems

215x35x76 mm Grinding wheel

Dia. 100 mm secondary grinding wheel

Wheel dressing diamond

Comec Adjustable halogen work light

Adjustable halogen work light