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Jung / Supromatic JF 520

Jung Supromatic JF 520

Jung Supromatic JF 520 Surface Grinding Machine, Year of Manufacture: 2016, in very good, completely overhauled original condition.
The machine comes from the technical center of a prestigious German mechanical engineering company.

Technical Data:

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

Machine weight approx.: 2.0 t

Equipment and Accessories:

- Magnetic chuck
- Coolant unit
- Machine feet
- Grinding wheel

About the machine:

We offer a Jung Supromatic JF 520 surface grinding machine, year 2016, in very good condition. Naturally, the machine is fully functional and has approximately 50 operating 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 highly user-friendly and allows for the production of surfaces with a low Rz value. Take the opportunity to inspect this machine under power on-site and see its condition for yourself.

What has been overhauled

Mechanical overhaul scope:
- Comprehensive mechanical overhaul
- Hydraulic system
- Infeed system
- Lubrication
- Cross and vertical adjustment
- Grinding spindle
- Wheel dresser
- Paint finish in new-machine quality

Geometry scope:
- Guideway grinding at the manufacturer (optional)
- Hand scraping of guideways
- Disassembling, measuring the column, scraping/grinding as needed, re-fitting with pressure pads, checking and recording guideways
- Setting cross finish on the spindle head
- Aligning the dresser
- Regrinding the table and the magnet
- Machine acceptance according to manufacturer’s inspection sheet

Electrical scope:
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- Renewing complete electrical system, all limit switches and push buttons
- Conversion of the X-axis from cam switches to contactless limit switches
- New control cabinet
- RSF position display (2- or 3-axis display)
- Retention force control for 24V or electro-permanent magnetic chuck
- Control system modernization
- New auxiliary control cabinet (operator panel right upper side)
- Thyristor control for grinding spindle drive
- Manual cylindrical dressing with head dresser or side dresser (for Diaform operation)

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