GU20 x 40S

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 a servomotor, providing variable speed.

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.

Product description

Model	GU20 x 40S
Capacity
Distance Between Centers	400 mm
Swivel Over Table	200 mm
Max.Load of Centers	60 kg
Max. External Grinding Diameter	160 mm
Wheel Head
Swivel Angle	±30°
Manual Distance	135 mm
Auto Rapid Advance	25 mm
Sliding Seat Supplementary Displacement	95 (total 255 mm)
Min. Setting Unit	0.001 mm
One Turn of Handwheel (graduation)	2 (.005) mm
NC Feed Range	0~0.35 mm
Grinding Wheel
O.D x Width x I.D	305 x 38 x 127 mm
Speeds (belt-type) r.p.m	2085 / 2495
Work Spindle Head
Swivel Angle	120° (+90°,-30°)
Center Taper	MT:3
Spindle Speeds (variable) .r.p.m	10~300
Max. Load of Spindle (tool holder includer)	15 kg (Max length:100 mm)
Tailstock
Center Taper	MT:3
Stroeke	20 mm
Table
Swivel Angle	-3°,+12°
Traverse Speed	50~4000 mm/min
Auto. Reciprocate Min. Stroke	8 mm
Feed of One Turn of Handwheel (2-step)	20 mm (2mm)
Motor
Wheel Spindel	2.1 kw (4P)
Workhead Spindle	0.75 kw (4P)
Hydraulic Pump	0.75 kw (6P)
Wheel Spindel Lubrication Pump	0.18 kw (2P)
Coolant Pump	0.18 kw (2P)
Internal Grinding Spindle	0.375 kw (2P)
Tank Capacity
Wheel Spindle Lubricant Tank	12 L
Hydraulic Fluid Tank	65 L
Coolant Tank	100 L
Machine Weight
kgs	2000 kg

NOTE: We reserve the right to modify and improve the specification without notice, the specification shown above is for reference only.

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