U 305
Vertical turning and grinding machine for brake drums, brake discs and other workpieces
HIGHLIGHTS
- Vertical design:All workpieces can be clamped and centered accurately on the horizontal worktable without any problem. The weight of the workpiece is distributed uniformly.
- Technically up-to-date “intermittent feed”
- Steplessly variable spindle speeds and feeds.
- Surface grinding with cross hatched finish
Useful for
- Grinding of brake drums of trucks, trailers and buses
- Turning of brake discs of trucks, trailers and buses
- Turning of brake drums of industrial trucks, vans and cars
- Turning of brake discs of industrial trucks, vans and cars
- Turning and grinding of flywheels of trucks and buses
- Turning and grinding of flywheels of industrial trucks, vans and cars.
- Turning of brake linings off the trucks, trailers and buses.
The development and manufacture of vertical turning and grinding machines is a HUNGER speciality. We have been active in this field for more than 30 years. More than 5000 satisfied users of HUNGER vertical turning machines have endorsed this principle.
- Technically up-to-date “intermittent feed”
- Advantages of the vertical design: All workpieces can be clamped and centered accurately on the horizontal work-table without any problem. The weight of the workpiece is distributed uniformly.
- The U 305 is designed for universal application, as well as for easy and convenient operation. It is precise in its operation and has a nearly unlimited life. The main spindle is carried on taper roller bearings fitted for life.
- Steplessly variable spindle speeds and feeds.
- Longitudinal and transversal feeds each in both directions (in and out).
- Tool feed drive by electronically controlled DC motors.
- LCD position displays (optional)
- The powerful and effective dust and chip extraction provides a healthy and clean work station
- Surface grinding with cross hatched finish
For more information, please click on the respective picture.
| Capacity | |
| Max. wheel | Ø 1400 mm |
| Max. turning and grinding | Ø 1210 mm |
| Min. turning | Ø 150 mm |
| Min. grinding | Ø 260 mm |
| Max. turning and grinding depth | 350 mm |
| Max. brake disc | Ø 600 mm |
| Max. brake disc thickness | 60 mm |
| Max. radial width of machined brake disc surface | 130 mm |
| Max. flywheel Ø | 600 mm |
| Min. flywheel Ø | 300 mm |
| Vertical travel | 730 mm |
| Horizontal travel | 520 mm |
| Spindle speeds and feeds | |
| Steplessly spindle speed | 20 - 120 rpm |
| Grinding spindle speed at contour grinding | 4500 rpm |
| Grinding spindle speed at cross-hatch grinding | 2800 rpm |
| Intermittend feed forward and reverse, up and down steplessly variable | 0 - 0,4mm/rev. |
| Electrical equipment | |
| Connected load | 2,6 kW |
| Voltage | 400 V |
| Type of current | Three-phase current |
| Frequency | 50Hz |
| Power supply for fuse rating | 16 A |
| Type of enclosure | IP 54 |
| Power of individual motors | |
| Main spindle motor | 1,5 kW |
| Grinding attachment motor | 1,1 kW |
| Dimension and weight | |
| L x W x H | 1,75 x 0,77 x 1,72 m |
| Space required machine and working area | 2 x1,5 m |
| Weight machine including standard accessories and packing approx. | 900 kg |
| Dust extraction | |
| Minimum flow | 150 m3/h |
| Dia. of trunking connection | Ø 32 mm |
| Noise level | The noise level at full load and/or max. flow measured in accordance with standard DIN EN 31201 at a distance of 1 m from the machine surface in open space amounted to 84 dB(A). |
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