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

Stone shaft Standard (kW) 3,7
Spindle (kW) 1,8
Wheelbarrow infeed (kW) 1,2
Wheelbarrow vehicle (kW) 1,2
Voltage (v / hz) 400/50
Hole grinding capacity (mm) 6 - 150
Max. 125
Spindle to spindle max. 740mm
Turning diameter (mm) 600
Diameter of turning mirror (mm) 260
Max. 70
Machine area (mm) 2525x1860
Machine height (mm) 1640
Machine weight (kg) 2300
Pivot angle -5° to +15°
Spindle hole diameter (mm) 42
Spindle speed (rpm) 100 - 850
Belt spindle (Clockwise)
Standard (rpm) 20000
Alternative (rpm) 10,000 - 50,000
X Axis travel (mm) 170
Z Axis travel (mm) 500
Table speed (mm / min) 0.1 - 10.000
Min. 0,0001


Standard accessories
 Sample quill and Grinding wheel for OH-20G
 Grinding wheel spindle(OH-20G 20,000rpm)
 Grinding wheel spindle speed inverter
 Variable speed control for work spindle
 Graphical software for Grinding cycle
 FANUC 0i Model D CNC (2-axis, 1-axis simultaneous)
 10.4 inch Colour touch panel display
 Standard cycles for plunge, traverse and face grinding.
 Manual Pulse Generator(x0.1/x1/x10 graduation)
 Fully enclosed cover with interlocked sliding door
 Working light (LED type)
 Coolant supply to dressing diamond, work spindle & workpiece
 Automatic lubrication system at machine running
 Dressing unit(for 2 diamonds set at 0⁰ & 90⁰ – periphery & face)
 Levelling bolt & Plate for machine
 Necessary tools with a steel box
 Operation manual & test report