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The Vertical Grinder provides highly precise grinding of large bearing rings and similar parts. Achieved total surface deviation is 1.4 microns (over 12 mm of trace length).

  • Harmonic Free Machine due to:
    • The base and column of the machine are built with a solid polymer casting. The superior vibration damping qualities of the polymer casting (10 times that of cast iron) allow a dramatic improvement in cutting conditions, part finish, and accuracy.
    • Hydrostatic rotary table.
    • Direct torque motor for constant speed rotation and contouring.
  • Electromagnetic chuck.
  • Pre-loaded ball screws on all linear axes.
  • High precision HEIDENHAIN linear scales for all axes feedback.
  • One grinding head for one or two Spindles, CNC controlled adjustable tilt to +/- 60 degrees.
  • Available dressers: a sweep style single point diamond radius dresser with E-axis for radius size adjustment and wear compensation a CBN straight dresser, and a diamond roll dresser.
  • AC feed motors with digital drives and high resolution encoders to allow extremely slow feedrates.
  • Full enclosure complete with mist extraction unit.
  • 10-position automatic tool changer.

   

 

V40G Technical Specifications

Maximum grinding

diameter:

 

60”

 

(1524 mm)

Electromagnetic chuck

diameter:

 

58”

 

(1470 mm)

Max. workpiece height:
Under spindle face

 

20”

 

(500 mm)

Grinding head travel:
Up-down (Z-axis)
Left-right (X-axis)
 
24”
85”
 
(600 mm)
(2170 mm)

Table drive:
Table speeds

Maximum torque
Maximum table load

(able to switch to

C-axis mode)

 
80 RPM
1200 ft.lb

1500 lb

 
 

(1500 Nm)

(700 kg)

Axis feed rates:

Infinity variable

Rapid

 

0-200 IPM

400 IPM

 

(0-5 m/min)

(10 m/min)

Accuracy:

Linear positioning

Repeatability

Table runout (TIR)

 

+/-0.0003/40" 

+/-0.0002"

0.00008"

 
(0.0075/1000 mm)
(0.0005 mm)

(2 microns)

 

This Super Precision Grinder model V40G is designed for grinding ball bearing components

 

 

MACHINE WORKING ZONE


AUTOMATIC WHEEL DRESSER


HYDROSTATIC ROTARY TABLE
AND ELECTROMAGNETIC CHUCK