OD Grinder

G300 OD Grinder
High precision CNC Cylindrical grinding

The Weldon G300 is a mid-sized, high-precision CNC cylindrical grinder designed to produce parts either between centers or in a chucking mode.

Although capable of running in a high production environment, the G300 also provides the flexibility to grind a wide variety of part configurations with minimal set-up.

Available with either a straight or angular wheelhead (factory set) the G300 can grind outside diameters, shoulders and faces in a single set-up. The CNC control can address complex form grinding (tapers, radii, etc.) via form dressed wheels or profiling.


  • FANUC Series 0i-TD CNC control with an 8.4″ color LCD and servo drives featuring FANUC AC digital technology. Includes a battery backup absolute feedback system eliminating the need to reference at each start-up.

  • Cast iron machine base providing stiffness, vibration control and thermal stability.

  • Pressurized Vee & Flat way system for smooth controlled linear motion.

  • Straight (S) or angular (A) wheelhead with hydrodynamic spindle bearings for superior surface finishes and roundness capability

  • 16” x 3” (S) or 20” x 4” (A) wheel guard with adjustable hood and coolant nozzle plumbing.

  • 10 hp AC wheel drive with variable speed drive to maintain constant sfpm.

  • Combination live and dead spindle workhead with straight recess spindle nose and #5 MT center.

  • Fixed position diamond holder behind the workhead for CNC dress routines.

  • Hydraulically actuated tailstock, 1.6” quill movement, with #4 MT center and 7.75” manual quill adjustment.

  • Full enclosure with manual sliding door assembly and multiple maintenance access window panels. Includes safety interlock.


  • In-process gage for automatic size control.

  • Automatic lateral locator, wheelhead mounted, featuring a Renishaw probe.

  • Automatic wheel balancer, pulley side mounting.

  • Electric rotary dressing systems for extended diamond life when processing with standard abrasives.

  • Work holding solutions can be addressed with a variety of systems such as manual and powered jaw chucks, collet chucks, magnetic faceplates, vacuum chucks, expanding arbors, pitch-line chucks and custom fixtures.

  • Coolant supply and filtration systems are available to suit any application; magnetic, fabric, cyclonic, pressure, and combination filtration units can be provided.

  • Acoustic emissions sensor for gap elimination, crash detection and touch dressing.

  • Automation via FANUC 6 Axis robots can be factory integrated on a turnkey basis.