PTG 6L Tool & Cutter Grinder

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A CNC controlled cutter grinder for manufacturing, sharpening and reconditioning a wide variety of cutting tools.

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Built for High Productivity and Precision

Engineered to manufacture complex cutting tools, the new Star PTG-6L is a five axis, CNC controlled cutter grinder for manufacturing, sharpening and reconditioning a wide variety of cutting tools.  Made in the U.S.A. and equipped with a six-station wheel pack changer, the PTG-6L is built for high productivity and precision.

Technical Data* Units Value
Base Machine Dimensions (L x W x H)mm2920 x 1471 x 2600
Total Weight: Base Machinekg5800
Maximum Workpiece Diametermm254
Maximum Workpiece Lengthmm*675
C - Axis Headstock Spindle 360° Rotationrpm1,000
B - Axis Grinding Spindle Swivel +/- 120°rpm12
X - Axis Horizontal Travelmm350
X - Axis Travel Speed m/min50
Y - Axis Vertical Travelmm285
Y - Axis Travel Speedm/min50
Z - Axis Horizontal Travelmm680
Z - Axis Travel Speedm/min50
Grinding Spindle Speedrpm10,000
Continuous Spindle Horsepowerkw15
Peak Spindle Horsepowerkw45
Maximum Grinding Wheel Diametermm152
Smallest Programmable Movement - Linearmm0.0001
Linear Axis Glass Scale Feedback Resolutionmm0.0001
Smallest Programmable Movement - Rotarydegree0.00254
Rotary Axis Feedback Resolution: A-axisdegree0.000068
Rotary Axis Feedback Resolution: B-axisdegree0.00000006


  •  5-Axis machine featuring NUM Control
  •  NUMROTO Software
  •  Mineral cast base and column
  •  Full linear motor and direct drive rotary technology
  •  20 HP HSK direct drive grinding spindle
  •  Linear glass scales for positioning
  •  Fluting capability up to 16.5 inches
  •  Precision workholding solutions
  •  22” user interface display


  •  Integrated high volume loader
  •  CNC traveling steady rest
  •  Engineered tailstocks
  •  Onboard Wheel Dressing
  •  Grinding wheel auto-sticking capabilities for unmanned operations
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