Supertec G20A-30CNC
Key Specifications
swing over table
distance between centers
max grinding diameter
max load between centers
wheel size
wheel speed
How much does the Supertec G20A-30CNC cost?
Price estimate
We do not have a price for the Supertec G20A-30CNC that we can stand behind, so we show no number. Configuration, options and installation move the final price a long way: a quote is the reliable figure.
Overview
At 300 mm (12 in) between centers, the Supertec G20A-30CNC is a very short-bed CNC cylindrical grinder. It is the small angular-type model: Ø200 mm (Ø8 in) of swing, the same figure as its maximum grinding diameter, and 80 kg (176 lb) held between centers.
Short does not mean lightly equipped at the wheel. The machine carries a Ø405 × 50 × Ø127 mm (Ø16 × 2 × Ø5 in) wheel at 1,800 rpm with a 5 kW (6.7 hp) spindle motor, and the wheelhead has 160 mm (6.3 in) of infeed travel. For a part this size that is a generous amount of power per millimetre of wheel face. It points to production work on small shouldered components, where the angular approach finishes a diameter and a face together.
Positioning figures are those of the rest of the family. X moves in Ø0.001 mm (Ø0.0001 in) steps at up to 6 m/min, Z in 0.001 mm (0.0001 in) steps at up to 8 m/min, and each axis has a 1.2 kW (1.6 hp) servo motor. The table swivels 10°.
Two cautions. Supertec does not give a consistent net or gross weight for this model, so ask for one; the packing dimension is 3,100 × 3,000 × 1,850 mm (122 × 118 × 73 in). And the table does not state the wheelhead angle.
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Table | Ø200 mm (Ø8 in) |
| Distance Between Centers | 300 mm (12 in) |
| Max Grinding Diameter | Ø200 mm (Ø8 in) |
| Max Load Between Centers | 80 kg (176 lb) |
| Wheel Size | Ø405 × 50 × Ø127 mm (Ø16 × 2 × Ø5 in) |
| Wheel Speed | 1,800 rpm |
| Wheel Peripheral Speed | 2,000~3,600 m/min |
| X Axis Rapid Traverse | 6 m/min |
| X Axis Infeed Travel | 160 mm (6.3 in) |
| X Axis Min Increment | Ø0.001 mm (Ø0.0001 in) |
| Wheel Spindle Type | Bearing Type |
| Tailstock Quill Travel | 25 mm (1 in) |
| Tailstock Center Taper | MT 3 |
| Z Axis Rapid Traverse | 8 m/min |
| Z Axis Min Increment | 0.001 mm (0.0001 in) |
| Table Swivel Ccw | 10° |
| Wheel Spindle Motor | 5 kW (6.7 hp) |
| Workhead Motor | 0.375 kW (0.5 hp) |
| Lubrication Pump | 5.2 L/min 10kg/cm2 |
| Hydraulic Pump | 20 L/min 55kg/cm2 |
| Coolant Pump | 80 L/min 0.7kg/cm2 |
| X Axis Servo Motor | 1.2 kW (1.6 hp) |
| Z Axis Servo Motor | 1.2 kW (1.6 hp) |
| Packing Dimensions | 3,100 × 3,000 × 1,850 mm (122 × 118 × 73 in) |
Specifications sourced from supertec-grinder.com — verified 2026-10-05
Strengths & Limitations
Strengths
- Very short 300 mm (12 in) center distance keeps the machine matched to small shouldered parts
- 5 kW (6.7 hp) wheel motor on a Ø405 × 50 × Ø127 mm (Ø16 × 2 × Ø5 in) wheel
- 160 mm (6.3 in) of infeed travel on the wheelhead
- X and Z servo axes with 0.001 mm resolution and rapids of 6 m/min and 8 m/min
Limitations
- Nothing longer than 300 mm (12 in) fits between centers
- The maker's page does not give a usable machine weight for this model
- Load between centers is limited to 80 kg (176 lb)
- No wheelhead angle is stated in the specification table
Best For
Frequently Asked Questions
01
Swing over the table Ø200 mm (Ø8 in), maximum grinding diameter Ø200 mm (Ø8 in), distance between centers 300 mm (12 in) and a maximum load of 80 kg (176 lb) held between centers. The tailstock takes an MT 3 center and its quill travels 25 mm (1 in).
02
Size. The G25A-35CNC swings Ø250 mm (Ø10 in) over 350 mm (14 in) and uses a Ø455 × 50 × Ø127 mm (Ø18 × 2 × Ø5 in) wheel at 1,650 rpm. The G20A-30CNC swings Ø200 mm (Ø8 in) over 300 mm (12 in) with a Ø405 mm wheel at 1,800 rpm. Wheel motor, infeed travel and load limit are the same on both.
03
Supertec lists a packing dimension of 3,100 × 3,000 × 1,850 mm (122 × 118 × 73 in). The weight rows on the maker's page are inconsistent for this model, so get the net and gross weight confirmed in writing before arranging transport or a foundation.
04
The table lists a lubrication pump of 5.2 L/min, a hydraulic pump of 20 L/min and a coolant pump of 80 L/min. Supertec states that the hydraulic, coolant and lubrication systems are separated from the machine to keep vibration and heat out of the casting.
More from Supertec
Other CNC Grinding Machines
Voumard 1000
Palmary OCD-4280P
Studer S151
Hardinge Kellenberger T1000
Rollomatic GrindSmart 830XW
