Motovario NMRV and NMRV POWER worm gear reducers

One of Europe’s leading manufacturers of geared motors for industrial and civil applications, Italian manufacturer Motovario offers a wide range of high quality power transmission products that are reliable, robust and versatile.

Motovario specializes in worm gearboxes, helical gearboxes, bevel helical gearboxes shaft mount gearboxes, mechanical variators and electric motors.

Their products are used in a wide range of machines in the packaging, materials handling, conveying, sorting, hoisting and pumping industries.

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Motovario NMRV and NMRV POWER worm gear reducers currently represent the most advanced solution to market requirements in terms of efficiency and flexibility. The new NMRV Power series, also available as compact integral helical/worm option, has been designed with a view to modularity: low number of basic models can be applied to a wide range of power ratings guaranteeing top performance and reduction ratios from 5 to 1000.

Motovario NMRV Worm Reducers

Motovario NMRV worm reducers have led the industry in design innovation for more than 20 years.

By using aluminum housings, Motovario can produce worm reducers that are maintenance-free, have low occurrences of leaks, run at higher efficiency and are easier to handle than standard cast-iron worm reducers.

Using two bearings on the input shaft, o-rings instead of paper gaskets and painting the reducers limits problems caused by leaks, corrosion and vibration.

Motovario also hardens all worm shafts to improve efficiency and prolong reducer life.

  • NMRV – Sizes: 025-030-040-050-130-150
  • NMRVpower – Sizes: 063-075-090-110
  • Available versions: fitted for motor coupling, with input shaft, with torque limiter
  • Power up to 18,5 kW
  • Cases up to 110 in die-cast aluminium alloy and over 130 in G200 grey cast iron
  • Ratios between 5 and 100
  • Max torque 1.550 Nm and admissible radial loads max 18.000 N
  • Aluminium units are supplied complete with synthetic oil and allow for universal mounting positions, with no need to modify lubricant quantity
  • Worm wheel: bronze Cu Sn12 Ni2 (UNI7013-10)
  • Ground worm profile ZI (UNI4760)
  • Loading capacity in accordance with: ISO.14521, DIN.3996, BS 721, AGMA 6034, ISO 6336, DIN 3990, DIN 743, ISO 281
  • Size 030 and over are painted with RAL 5010 blue epoxy-polyester powder
  • Available with pre-stage unit: HA31 for NMRV040/NMRV050, HW 030/040 for NMRV-P Series
  • Worm gear reducers are available with diffferent combinations: NMRV+NMRV, NMRVpower+NMRV, NRV+NMRV, NRVpower+NMRV, HA31+NMRV, HW/NMRVpower, IHW/NMRVpower
  • Options: protection cover, torque arm, output flange, output shaft kit, torque limiter, viton oil seals, low/high temperature and food grade oil, filling/drain/breather/level plug, reinforced output