D Series / Hollow Shaft Helical Gearboxes


Specifications and Advantages

  • Monoblock housing design,
  • Wide ratio, torque range and two or three stages can be in same housing
  • Reduction can be increased up to six stages,
  • Standard IEC B5 or B14 motor flanges,
  • Electromagnetic brake option,
  • Long life bearings,
  • GG20 and GGG40 cast iron housings,
  • 58-62 HRc hardened and grinded gears.

Options and Accessories

  • Output flange and output shaft options,
  • Servomotor specific connection flanges,
  • Electromagnetic brake motors (24V/220V/380V),
  • Backstop application,
  • 500-1024 pulse encoder applications,
  • External fan cooling option for frequency inverter applications.

Gearbox SizeD07...D17...D27...D28...D37...D47...D57...D67...D77...D87...D97...
Ratio Range [i]6-1805-1435-1.1894-3.8004-4.8204-6.1364-10.1474-9.5084-24.9636-17.9897-20.566
Nominal Torque [Nm]1502004506008201.5503.0004.3008.00013.00018.000
Hollow Shaft Diameter [mm]Ø25Ø30Ø35Ø40Ø40Ø50Ø60Ø70Ø90Ø110Ø120

This series is compact and easy to mount. Flange-, foot- and hollow shaft-mounted versions, or combinations of these mounting options are available. These gearboxes are of a modular design. Output shaft and flange can be mounted to standard hollow-shaft gearboxes without modification of the gearbox. The housing has mounting points on both sides, allowing mounting from either side. The hollow-shaft gearboxes have new mounting options also for the input side. Input possibilities are standard (IEC B5 or B14), direct coupled or with solid input shaft. A combination with other gearbox types is possible with minimum change. In applications where efficiency and strength are important, hollow-shaft gearboxes are preferred to worm gearboxes. Hollow-shaft gearboxes can withstand higher overhung loads than other gearbox types.