The spindle runs on precision bearings, assuring maximum spindle stability. It guarantees outstanding accuracy for external and internal diameter grinding and face grinding.
The spindle head swivels +90°~-30°.
The spindle head on the 20 series machines provides variable speed changed by frequency inverter.
The spindle head on the 32 and 42 series is driven by servomotor, providing variable speed.
Precision Wheel Head
The grinding wheel spindle is precision machined from high quality alloy steel SNCM-220, normalized, tempered, carburized and sub-zero treated, precision ground and mirror-effect treated. Hardness reaches to over HRC 62°. No deformation, maximum wear resistance and lifetime accuracy are assured.
Special Hydrostatic Bearing
The wheel spindle runs by using a special hydrostatic bearing and is especially ideal for precision grinding work. It features high speed, no friction between metals, no heat generation, deformation-free, extra high accuracy and continual use.
Advanced Hydrostatic Lubrication System
The slideways of the table and the wheel head are lubricated by an advanced automatic hydrostatical lubrication system. This provides various features, such as extremely smooth movement, added feed accuracy and superior grinding accuracy.
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GU20 x 40S
Distance Between Centers
Swivel Over Table
Max.Load of Centers
Max. External Grinding Diameter
Auto Rapid Advance
Sliding Seat Supplementary Displacement
95 (total 255 mm)
Min. Setting Unit
One Turn of Handwheel (graduation)
2 (.005) mm
NC Feed Range
O.D x Width x I.D
305 x 38 x 127 mm
Speeds (belt-type) r.p.m
2085 / 2495
Work Spindle Head
Spindle Speeds (variable) .r.p.m
Max. Load of Spindle (tool holder includer)
15 kg (Max length:100 mm)
Auto. Reciprocate Min. Stroke
Feed of One Turn of Handwheel (2-step)
20 mm (2mm)
2.1 kw (4P)
0.75 kw (4P)
0.75 kw (6P)
Wheel Spindel Lubrication Pump
0.18 kw (2P)
0.18 kw (2P)
Internal Grinding Spindle
0.375 kw (2P)
Wheel Spindle Lubricant Tank
Hydraulic Fluid Tank
NOTE: We reserve the right to modify and improve the specification without notice, the specification shown above is for reference only.