Supertec G32A / G38A / G45A CNC
Image: supertec-grinder.com, Supertec
Key Specifications
swing over table
distance between centers
max grinding diameter
max load between centers
wheel size
wheel speed
How much does the Supertec G32A / G38A / G45A CNC cost?
Price estimate
We do not have a price for the Supertec G32A / G38A / G45A CNC 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
The G32A, G38A and G45A are the angular-type counterparts of Supertec's mid-size CNC cylindrical grinders, sold as the GA-CNC series in four lengths. Angular machines exist for one job above all: grinding a diameter and the shoulder next to it in a single infeed. The maker's table states the capacities but no wheelhead angle, so ask for that figure before quoting a part.
Swing over the table is Ø320 mm (Ø12.6 in) for the G32A, Ø380 mm (Ø15 in) for the G38A and Ø450 mm (Ø18 in) for the G45A. Between centers the choice is 350 mm (14 in), 500 mm (20 in), 800 mm (32 in) or 1,200 mm (48 in). The range is deliberately shorter than a plunge series would need. Shoulder work is mostly done on stub shafts, spindles and flanged parts.
Every size shares the Ø510 × 50~100 × Ø152.4 mm (Ø20 × 2~4 × Ø6 in) wheel at 1,390 rpm, a 5 kW (6.7 hp) wheel motor, 225 mm (9 in) of infeed travel and a 150 kg (330 lb) limit between centers. Rapids are 6 m/min on X and 8 m/min on Z.
Supertec describes the wheel spindle as running in hydrostatic and hydrodynamic bearings surrounded by a high pressure oil film, and the tailstock sleeve as hardened nitralloy steel in a Meehanite body. A full-enclosure splash guard is named in the feature list for this series. Net weight runs from 5,200 kg (11,440 lb) for the 35CNC to 6,300 kg (13,860 lb) for the 120CNC.
Full Specifications
| Parameter | Value |
|---|---|
| Swing Over Table | G32A: Ø320 mm (Ø12.6 in); G38A: Ø380 mm (Ø15 in); G45A: Ø450 mm (Ø18 in) |
| Distance Between Centers | 35CNC: 350 mm (14 in); 50CNC: 500 mm (20 in); 80CNC: 800 mm (32 in); 120CNC: 1,200 mm (48 in) |
| Max Grinding Diameter | G32A: Ø300 mm (Ø12 in); G38A: Ø350 mm (Ø14 in); G45A: Ø430 mm (Ø17 in) |
| Max Load Between Centers | 150 kg (330 lb) |
| Wheel Size | Ø510 × 50~100 × Ø152.4 mm (Ø20 × 2~4 × Ø6 in) |
| Wheel Speed | 1,390 rpm |
| Wheel Peripheral Speed | 2,000~3,600 m/min |
| X Axis Rapid Traverse | 6 m/min |
| X Axis Infeed Travel | 225 mm (9 in) |
| X Axis Min Increment | Ø0.001 mm (Ø0.0001 in) |
| Wheel Spindle Type | Bearing Type |
| Workhead Speed | Max. 350 rpm |
| Workhead Center Taper | MT 4 (opt. MT 5) |
| Workhead Spindle Type | Fixed & Rottary |
| Workhead Spindle Bore | Ø23 mm (0.9 in) |
| Tailstock Quill Travel | 25 mm (1 in) |
| Tailstock Center Taper | MT 4 (opt. MT 5) |
| Z Axis Rapid Traverse | 8 m/min |
| Z Axis Min Increment | 0.001 mm (0.0001 in) |
| Table Swivel Ccw | 35CNC: 9°; 50CNC, 80CNC: 7°; 120CNC: 5° |
| Wheel Spindle Motor | 5 kW (6.7 hp) |
| Workhead Motor | 1.5 kW (2.0 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 | 35CNC, 50CNC, 80CNC: 1.2 kW (1.6 hp); 120CNC: 1.8 kW (2.4 hp) |
| Machine Weight | 35CNC: 5,200 kg (11,440 lb); 50CNC: 5,600 kg (12,320 lb); 80CNC: 5,800 kg (12,760 lb); 120CNC: 6,300 kg (13,860 lb) |
| Gross Weight | 35CNC: 5,600 kg (12,320 lb); 50CNC: 6,420 kg (14,124 lb); 80CNC: 7,500 kg (16,500 lb); 120CNC: 7,800 kg (17,160 lb) |
| Packing Dimensions | 35CNC: 4,250 × 2,280 × 2,260 mm (167 × 90 × 89 in); 50CNC: 4,760 × 2,280 × 2,260 mm (185 × 90 × 89 in); 80CNC: 5,280 × 2,280 × 2,280 mm (208 × 90 × 90 in); 120CNC: 5,610 × 2,280 × 2,310 mm (221 × 90 × 91 in) |
Specifications sourced from supertec-grinder.com — verified 2026-10-05
Strengths & Limitations
Strengths
- Angular-type series in three swings, Ø320 mm (Ø12.6 in) to Ø450 mm (Ø18 in), and four center distances up to 1,200 mm (48 in)
- Ø510 × 50~100 × Ø152.4 mm (Ø20 × 2~4 × Ø6 in) wheel, so the wheel width can be matched to the shoulder and journal being ground
- Short 350 mm (14 in) bed available for stub shafts, at 5,200 kg (11,440 lb) net
- Full-enclosure splash guard appears in Supertec's feature list for the series
- Workhead and tailstock centers are MT 4, with MT 5 optional
Limitations
- Supertec's table gives no wheelhead angle, so shoulder geometry has to be confirmed with the maker
- Load between centers is 150 kg (330 lb) on all four lengths
- Table swivel is 9° on the 35CNC, 7° on the 50CNC and 80CNC, and only 5° on the 120CNC
- Longest bed is 1,200 mm (48 in); longer shafts fall to other series
Best For
Frequently Asked Questions
01
Three swings and four lengths. The G32A swings Ø320 mm (Ø12.6 in), the G38A Ø380 mm (Ø15 in) and the G45A Ø450 mm (Ø18 in). Each is listed with 350 mm (14 in), 500 mm (20 in), 800 mm (32 in) or 1,200 mm (48 in) between centers, sold as the 35CNC, 50CNC, 80CNC and 120CNC.
02
Ø300 mm (Ø12 in) on the G32A, Ø350 mm (Ø14 in) on the G38A and Ø430 mm (Ø17 in) on the G45A. The workhead spindle bore is Ø23 mm (0.9 in) and the workhead speed is variable up to Max. 350 rpm.
03
Net weights are 5,200 kg (11,440 lb) for the 35CNC, 5,600 kg (12,320 lb) for the 50CNC, 5,800 kg (12,760 lb) for the 80CNC and 6,300 kg (13,860 lb) for the 120CNC. The shortest machine packs into 4,250 × 2,280 × 2,260 mm (167 × 90 × 89 in).
04
A Ø510 mm wheel with a Ø152.4 mm bore, 50 to 100 mm wide, listed as Ø510 × 50~100 × Ø152.4 mm (Ø20 × 2~4 × Ø6 in). It runs at 1,390 rpm on a 5 kW (6.7 hp) wheel spindle motor, with a stated peripheral speed range of 2,000~3,600 m/min.
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