internal cylindrical grinding machine / for tubes / CNC / precision
RGC32 Ecotech Machinery, Inc.



  • Type:

    internal cylindrical

  • Applications:

    for tubes

  • Control type:


  • Other characteristics:

    precision, stationary, horizontal

  • Power:

    22.1 kW (30 hp)

  • Distance between centers:

    Max.: 237 in

    Min.: 80 in


CNC Roll Grinders
The RGC series is our versatile multi-purpose precision Roll Grinder. This machine is set up with a traversing wheel head that uses an AC digital servomotor and a high-precision rack and pinion drive system. The worktable is stationary and with the use of the split tailstock the operator can adjust for taper. The carriage under the wheel head has a high-precision ball screw and AC digital servomotor to drive the movement completes the infeed. Constructed of high-strength, low-stress Meehanite cast iron that has been properly aged. The guide-ways are precision machined, ground and hand-scraped for maximum lubrication distribution.

This crowning process is completed by the use of a hydrostatic eccentric sleeve that houses the grinding wheel spindle that also utilizes a hydrostatic bearing system. The feed system uses an AC Servo motor and precision ball screw to turn the eccentric sleeve (U-axis) causing the centerlines to shift and the infeed to simultaneously move in (X-axis) keeping constant contact. This process can generate a crowning effect on the workpiece (concave and/or convex). This process can also generate tapers and parabolic curves.