Cylindrical grinding machine

STUDER S30 -1

STUDER S30-1 – universal cylindrical grinding machine for external and internal cylindrical grinding in a single setup. Year of manufacture 2005, well-maintained original condition, no evidence of accidents or welding repairs. Guides and machine bed are in exceptionally good condition for the year of manufacture.

The machine comes with the complete original operating manual from Fritz Studer AG – in three languages, German/English/French, including a spare parts catalog, lubrication and maintenance section, and noise measurement report – and with the EC declaration of conformity, both issued for machine no. 019.3784. According to this factory documentation, it is the version with a center distance of 1,000 mm.

EQUIPMENT
- Turret grinding spindle head, swiveling 0° to +180°, highly precise indexing via Hirth gearing 5°
- Folding internal grinding attachment for belt spindles, drive 1.5 kW – external and internal grinding in a single setup
- In-process measuring control (active size control) installed
- Swiveling workpiece spindle head, mounting taper MK 5, collets W-25
- Tailstock MK 3 with adjustable center pressure and fine adjustment ± 40 µm for rapid correction of cylindricity
- Digital display, frequency converter in the control cabinet
- Hydraulic unit Wandfluh (Switzerland), coolant supply with filtration and aerosol extraction
- Machine bed made of mineral casting Granitan® S103

TECHNICAL DATA
- Center distance 1,000 mm, clamping length 1,030 mm, table travel 1,050 mm
- Max. workpiece weight between centers 130 kg
- Machine table swiveling 8.5°
- Cross slide X: rapid traverse 60 mm, plunge depth 3.4 mm, feed 0.012–6 mm/min, incremental feed from 0.001 mm
- Longitudinal slide Z: 50–5,500 mm/min, smallest automatic table travel 1.5 mm
- Grinding spindle: speeds 1,670 / 2,110 min⁻¹, peripheral speed 35 m/s, mounting taper Ø 63 mm, hydrodynamic plain bearings
- Grinding wheel max. Ø 400 × 80 × Ø 127 mm
- Workpiece spindle head: 30–1,000 min⁻¹, swiveling 0–90°, load during fly grinding 100 Nm
- Internal grinding: overhang to the face 210 mm, max. workpiece Ø 129 mm in a three-jaw chuck, 140 mm with a center
- Guaranteed working accuracy (factory specification): straightness 0.0025 mm on 400 mm, 0.004 mm on 650 mm
- Roundness during fly grinding (factory specification): 0.0003 mm
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- Automatic grinding cycles with spark-out and shut-off function, plunge and pendulum grinding
- Noise level according to factory protocol ≤ 75 dB(A)
- Connection value max. 13 kVA, 400 V / 50 Hz, air pressure 5 bar
- Weight approx. 3,400 kg

TYPICAL APPLICATIONS
Shafts, axles, spindles, pistons and bolts between centers · Bushings, rings, sleeves and flanges externally and internally in a single setup · Round bars, blanks and tool shanks to shank dimensions · Tool bodies, holders, supports and internal tapered seats · Gauges, master parts and fixtures in tool and mold making · Re-grinding and repair of precision parts.

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