72780 contact belt grinding and polishing machine

The contact belt grinding and polishing machine of the 72780 series is a universally applicable belt grinding and polishing machine in heavy-duty design with motor power per spindle from 3.0 to 7.5 kW and is therefore ideal for industrial applications with high stock removal rates.

Due to its double-sided design with optional combination of belt grinding and polishing, only belt grinding or only polishing, the 72780 series is a universally applicable machine. Thanks to its stable, low-vibration design, it guarantees a long service life and precise work without chatter marks.

Product features

  • Double side version
  • Stand version with 2 stand heights
    630 mm for seated activity
    900 mm for standing activity
  • Three-stage V-belt drive for optional three spindle speeds at engine speed 1,500 1/min
    The speed which can be adjusted separately for each side via a three-stage V-belt drive offers a high degree of flexibility and a wide range of applications.
  • Optional frequency converter for speeds 900 – 2,800 1/min.
    Other speeds on request
  • For each side separate drive motor
  • Series motor-protective circuit-breakers
  • Main circuit breaker with undervoltage release
  • Space-saving design
  • Special equipment for aluminium and magnesium grinding
    For the grinding of aluminium, we optionally offer you additional equipment that meets the requirements of BGR 109 – the former ZH 1/32 (guideline for the prevention of dust fires and dust explosions during grinding, brushing and polishing). This machine is available in a special version for grinding magnesium. It complies with BGR 204.
  • Comprehensive range of accessories
    The accessories on offer also offer you the possibility of quick conversion to other applications.
  • CE Conformity
    Legal conformity is a matter of course for us and has just as high a priority as the long-term, targeted and high manufacturing quality of our products.

Technical data

tape size max. 100 x 3.500 mm or max. 100 x 4.000 mm
belt speed depending on the speed of the machine and the contact wheel-Ø
wave-Ø 35 mm
Max. Contact wheel-Ø 450 mm
Max. Polishing discs-Ø 500 mm
engine power (pole-changing) 3,0 to 7,5 kW
voltage 400 V, 50 Hz, Dr.
Possible spindle speed 700, 800, 900, 1.000, 1.120, 1.250, 1.400, 1.600, 1.800, 2.000, 2.240, 2.500, 2.800 1/min Please select 3 speeds and specify when ordering!
motor speed 1.500 1/min
mode S1, IP 54
dimension see sketch
Color Grey RAL 7040 Red RAL 3020

Weight

Performance Switch seated standing
3,0 kW / 1.500 1/min direct 375 kg 410 kg
4,0 kW / 1.500 1/min 395 kg 420 kg
5,5 kW / 1.500 1/min 415 kg 440 kg
7,5 kW / 1.500 1/min 445 kg 470 kg

Accessories

  • Spindle equipment right for aluminium machining
  • Spindle assembly left for aluminium machining
  • Frequency inverter for infinitely variable speed control
  • brake unit for quick braking of the spindles
  • Pneumatic belt tensioning arm

Special equipment

  • For grinding belt width up to 150 mm or 200 mm
  • For polishing wheels up to 200 mm width
  • Special polishing machine for turbine blades