Motovario NMRV040 25:1 Worm Gearbox – 18mm Output Bore

This NMRV040 25:1 worm gearbox is a genuine Motovario right-angle speed reducer built for applications needing balanced output speed reduction with useful torque increase. With a die-cast aluminium housing, hollow bore output and flexible IEC motor input options, it delivers dependable speed reduction for industrial machinery and OEM builds.

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Gearbox Overview

The NMRV040 frame sits in Motovario’s compact worm gearbox range and is well suited to small conveyors, labelling machines, light automation systems, compact OEM machinery. In this 25:1 configuration it is normally selected where a practical compromise between output speed and torque is needed, while still keeping the simplicity and space-saving benefits of a compact 90° gearbox.

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Why Choose This Configuration?

This configuration is best suited to buyers who need a NMRV040 gearbox with a 18mm hollow bore and a 25:1 reduction stage. It gives balanced output speed reduction with useful torque increase, making it a strong option for conveyors, feeders, automation systems and general equipment drives.

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Technical Details

Gearbox size: NMRV040
Gear ratio: 25:1
Output bore: 18mm hollow bore
Gearbox type: Worm gear reducer
Housing: Die-cast aluminium alloy housing
Finish: RAL 5010 blue epoxy-polyester coating
Lubrication: Supplied with synthetic ENI TELIUM VSF oil for life
Mounting positions: B3, B6, B7, B8, V5, V6
Recommended position: B3
Motor input options: 63B14 | 63B5 | 71B14 | 71B5
Typical applications: small conveyors, labelling machines, light automation systems, compact OEM machinery

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Internal Links & Compatible Options

Same gearbox size, nearby ratios: jump to the NMRV040 ratio that best suits your output speed and torque requirements.

Same gearbox size, different output bores: jump to the NMRV040 25:1 bore size that best matches your shaft.

More Motovario worm gearboxes: Browse all NMRV040 gearboxes Browse all worm gearboxes

Helpful calculators:
Gearbox Ratio & Speed Calculator |
Output Torque Calculator

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Frequently Asked Questions

What does a 25:1 worm gearbox do?

A 25:1 worm gearbox reduces motor speed and multiplies torque, giving slower and more controlled output for industrial machinery.

What is this NMRV040 gearbox commonly used for?

This gearbox is commonly used on small conveyors, labelling machines, light automation systems, compact OEM machinery, where compact right-angle transmission and dependable continuous-duty operation are important.

What mounting positions are available?

Motovario lists B3, B6, B7, B8, V5 and V6 mounting positions for these NMRV/NRV units, with B3 technically preferred for lower oil splash, better lubrication and less heating.

What lubricant is supplied as standard?

These units are supplied with synthetic ENI TELIUM VSF lubricant for life under standard conditions.

What material is the housing made from?

Sizes up to 110 use die-cast aluminium alloy housings, while sizes 130 and 150 use grey cast iron housings.