Okamoto Machine Tool Works Ltd. Japan has been the leading manufacturer of high value grinding machines and associated equipment since 1926.

Today Okamoto produce verh high accurate surface grinders, cyclindirical grinders , internal grinders and rotary tavle grinding machines.


Technical Specifications

Diameter Width (mm only) (mm) Ø455x75x127mm
Diameter Width (Universal) (mm) Ø405x75x127mm
Stone speed (m / Sec) 33
Max grinding diameter (mm) 300
Distance between two spots (mm) 500
Weight between two punches (kg) 150
Max. 320
Max. 870
Table angle +4°/-11°
Height (mm) 3400 x 2100 x 1721
Machine weight (kg) 4600
Max. 300
Rotation angle (Universal / Cylindrical) ± 30° / Fixed
Min. 0,0001
Feedrate (mm / min) 0,001 – 4.000
Idle speed (mm / min) 4
Hand song section (mm) 0,0001/0,001/0,01
Spark 10 sec / 10 strokes
Max. -
Table angle -
Min. 0,0001
Feedrate (mm / min) 0,001 – 10.000
Idle speed (mm) 10
Hand song section (mm) 0,0001/0,001/0,01
Version fixed / live
Conical No.4
Speed (rpm) 10 – 500
Rotation angle (Universal / Cylindrical) +30° / -90°
Sleeve movement (mm) 30
Conical No.4
Stone (kW) 7,5
Spindle (Swivel) (kW) 0,75
Table (kW) 0,9
Longitudinal (kW) 0,9
Hole grinder attachment (kW) 1,5
Full load amperes / KVA 60 Amps / 20KVA


Standard accessories
Sample grinding wheel ø355x50xø127mm(Plain type 200 series)
Sample grinding wheel ø305x50xø127mm(U type 200 series)
Sample grinding wheel ø455x75xø127mm(Plain type 300 series)
Sample grinding wheel Ø405x75xø127mm(U type 300 series)
Wheel adaptor for sample wheel
5.5kW Spindle motor with (200 series)
7.5kW Spindle motor (300 series)
45 m/s variable wheel speed control
Variable speed control of workhead
FANUC 0i Model D CNC (2-axes, 1-axis simultaneous)
10.4 inch Colour touch panel with vertical & cross axis positioning display
Graphical soft-wear with teaching function for grinding and dress cycle set-up
Manual Pulse Generator(x1/x10/x100 per graduation)
Rapid feed device (Joystick for cross & longitudinal axis)
Fully enclosed cover with interlocked sliding door
Work light ( LED )
Automatic lubrication system at machine running
Coolant nozzle & hose
Coolant for Dressing
Constant coolant system to the table
Carbide centre
Automatic Driving dogs Φ5-80mm work piece by 6 pcs
Manual taper adjustment type tailstock
Table swivel measuring device
Balancing arbour
Levelling bolt & Plate for machine
Necessary tools with a steel box
Operation manual & test report