VSF series
Worm gear reducers, combined and with pre-stage reduction unit

Worm gear reducers, combined and with pre-stage reduction unit

NMRVpower - NMRV - NRVpower - NRV - HA31/NMRV - HW/NMRVpower

NMRV POWER          NMRV POWER          


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.

Certifications Available: ATEX 2GD/3GD

Warranty: Two years from date of delivery.

Characteristics

  • 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
  • Downloads
  • Product check list

    To enable us to identify the correct product for your requirements please complete the below form.

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    CUSTOMER INFO
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    APPLICATION DATA
    Motor Type

    Motor Information
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    Protection degree

    Gearbox speed (rpm)

    Speed range (rpm)

    Required torque (max/average)

    Description of the application

    Stop-Starts/Hr (Qty) - Duty

    Hours-Run/Day

    Casing version

    Gearbox mounting

    Mounting position (see catalogue)

    Loading (Please refer to the “Service Factor” paragraph on the catalogue)

    Fr/Fa radial/axial load

    Connection(direct, coupling, belt drive, chain...)

    Minimum Service Factor required

    Certifications/ Regulations required
    ENVIRONMENT CONDITIONS

    Presence of external heat sources ((from sun, environment and/or machines)

    Installation environment
    Type of atmosphere
    The following information is useful and necessary to identify the correct product according to the European ATEX Directive 94/9/CE. Please, fill the blank spaces of this document. Important note: Motovario cannot supply products for Atex 1D/1G or Zone 0

    Type of zone
    GAS
    DUST

    Permitted surface temperature
    GAS (Temperature class)

    DUST

    Motovario, if above information is provided, can confirm harmonization to EN1127-1 and from EN13463-1 to EN13483-8 for: H/HA Series - Helical gear reducers, B/BA Series - Helical bevel gear reducers, S Series - Shaft mounted gear reducers, NMRV/NMRV-P Series - Worm gear reducers.
    In case of order, the information above must be provided to enable the supply of the product necessary certification, file number and data for the nameplate.

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