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. wheelØ 1400 mm
Max. turning and grindingØ 1210 mm
Min. turningØ 150 mm
Min. grindingØ 260 mm
Max. turning and grinding depth350 mm
Max. brake discØ 600 mm
Max. brake disc thickness60 mm
Max. radial width of machined brake disc surface130 mm
Max. flywheel Ø600 mm
Min. flywheel Ø 300 mm
Vertical travel730 mm
Horizontal travel520 mm
Spindle speeds and feeds
Steplessly spindle speed20 - 120 rpm
Grinding spindle speed at contour grinding4500 rpm
Grinding spindle speed at cross-hatch grinding2800 rpm
Intermittend feed forward and reverse, up and down steplessly variable0 - 0,4mm/rev.
Electrical equipment
Connected load2,6 kW
Voltage400 V
Type of currentThree-phase current
Frequency50Hz
Power supply for fuse rating16 A
Type of enclosureIP 54
Power of individual motors
Main spindle motor1,5 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 area2 x1,5 m
Weight machine including standard accessories and packing approx.900 kg
Dust extraction
Minimum flow150 m3/h
Dia. of trunking connection Ø 32 mm
Noise levelThe 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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