KGR Rotary Table Surface Grinder




● Castings are made of high quality ribbed cast iron, which have been heat-treated to achieve extreme rigidity. Major castings are all box-type designed for excellent rigidity and strength. Compact designed bed and columns enable the whole machine to be shipped in a regular container, and also much saving on ocean and inland freight.

3-Axes Mechanism

● The “SP” grade linear guides are used for Y/Z axis, and there are four blocks on each axis that can provide 0.001mm vertical/cross-feed graduation.

● Vertical/cross-feed driven by AC-servo-motor.

● The hydrostatic rotary table with very low friction force and high rigidity, driven by servo motor with belt.


● Cartridge and flange type designed, powered with a powerful motor and supported by 3 sets of #7016 CP4 super precision angular contact ball bearings.


● The well-known control system Mitsubishi PLC and servo motor. Ergonomically designed operation panel, with 10” colored touch screen for grinding data input through dialog pages. We use MPG instead of hand-wheel for precision and easy usage. Y-axis is equipped with “HEIDENHAIN” linear scale for a real closed loop feedback system.

Dressing and compensation

● The table mounted wheel dresser is integrated into automatic grinding cycle. The dressing result is perfectly paralleled to table surface for super precision grinding applications.


● Auto lubricating system ensures the slide ways and ball-screws are well-lubricated.

Coolant systems

● Coolant tank type 250liter, 2bar, 80L/min

Specification Unit KGR-500 KGS-600 KGR-800 KGS-1000
Capacity Max. grinding diameter mm 500 600 800 1000
Max. Cross-feed travel mm 400 400 600 600
Distance between spindle center to table mm 600 600 600 600
Max table load (mag. chuck included) kg 600 700 900 1100
Table Table speed rpm 10~100 10~100 10~50 10~50
Cross feed 1 gra. mm 0.001/0.01 0.001/0.01 0.001/0.01 0.001/0.01
MPG x1 x10 1 rev. mm 0.1/1 0.1/1 0.1/1 0.1/1
Cross feed atuo. increment mm 0.01~25 0.01~25 0.01~25 0.01~25
Cross feed continously feed rate mm /min 5~2000 5~2000 5~2000 5~2000
Wheel Grinding Wheel dimension mm 400x80x127 400x80x127 400x80x127 400x80x127
Spindle/Elevation Elevation in feed 1 gra. mm 0.001/0.01 0.001/0.01 0.001/0.01 0.001/0.01
MPG x1 x10 1 rev. mm 0.1/1 0.1/1 0.1/1 0.1/1
Elevation rapid feed rate mm/min 5~1500 5~1500 5~1500 5~1500
Auto down feed increment mm 0.001~0.099 0.001~0.099 0.001~0.099 0.001~0.099
Motor Spindle motor  kW x P 11.25 x 4 11.25 x 4 11.25 x 4 11.25 x 4
Elevation motor (with brake)  kW 1(AC Servo) 1(AC Servo) 1(AC Servo) 1(AC Servo)
Table driving motor (with reducer) kW 2(AC Servo) 2(AC Servo) 3(AC Servo) 3(AC Servo)
Coolant motor  wW 0.4 0.4 0.4 0.4
Cross feed driving motor wW 1(AC Servo) 1(AC Servo) 1(AC Servo) 1(AC Servo)
Dimension Net weight kg 5000 5300 6000 6500
Gross weight kg 5500 5800 6500 7000
Base space mm 2300x3200x2650 2300x3200x2650 2800x3500x2700 2800x3500x2700