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Jung / Supromatic JF 520

Jung Supromatic JF 520

Jung Supromatic JF 520 Surface Grinding Machine, Year of Manufacture 2016, in excellent, fully overhauled original condition.
The machine comes from the technical center of a renowned German mechanical engineering company.

Technical Data:

Year of manufacture: 2000
Technical Specifications:
Clamping surface (L x W in mm): 600 x 200
Grindable area (L x W in mm): 600 x 250
Max. magnet size (mm): 500 x 200
Max. grinding wheel dimensions (mm): 225 (250) x 25 x 51
Distance table/spindle center (mm): max. 400
Table longitudinal feed (reciprocating) m/min: 1 – 20
Creep feed mm/min: 0 – 500
Grinding spindle drive speed rpm: 800 – 4200
Power kW (incl. creep feed): 1.6 – 2.2

Machine weight approx.: 2.0 t

Accessories and features:

- Magnet
- Coolant system
- Machine feet
- Grinding wheel

About the machine:

We are offering a Jung Supromatic JF 520 surface grinding machine, year of manufacture 2016, in very good condition. The machine is, of course, fully functional and has operated for approx. 50 hours since its overhaul. All slides move very smoothly and evenly. Even at high speeds, the Jung runs very quietly. This newer generation of surface grinders is extremely user-friendly and can achieve surfaces with a low Rz value. Take the opportunity to inspect the machine under power on site and see the condition for yourself.

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Scope of Overhaul

Mechanical scope:
- Mechanical general overhaul
- Hydraulics
- Feed
- Lubrication
- Cross and vertical adjustment
- Grinding spindle
- Dresser
- Painting to new-machine quality

Geometric scope:
- Guideway regrinding by the manufacturer (optional)
- Scraping of guideways
- Column removal, measurement, possible scraping/grinding, re-fitting with pressure stones, checking and finishing guideways
- Setting cross-hatch pattern on the spindle head
- Alignment of dresser
- Surface grinding of table and magnet
- Machine acceptance in accordance with the manufacturer’s inspection sheet

Electrical scope:
- Renewal of entire electrical system, all limit switches and push-buttons
- Conversion of X-axis from cam switch to contact-free limit switches
- New control cabinet
- RSF position display (2- or 3-axis readout)
- Holding force control for 24V or EP magnetic chuck
- Control system modernization
- New auxiliary control cabinet (control panel right top)
- Thyristor control for grinding spindle drive
- Manual cylindrical dressing with head dresser or side dresser (for Diaform mode)

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