Motovario NMRV050 25:1 Worm Gearbox – 25mm Output Bore

The Motovario NMRV050 25:1 worm gearbox is designed for compact, reliable right-angle power transmission where balanced output speed reduction with useful torque increase is required. This version features a 25mm hollow bore, robust sealing, and a die-cast aluminium housing suited to day-to-day industrial use.

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Gearbox Overview

The NMRV050 frame sits in Motovario’s medium-duty worm gearbox range and is well suited to conveyors, packaging machinery, feeders, small mixers. 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 NMRV050 gearbox with a 25mm 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: NMRV050
Gear ratio: 25:1
Output bore: 25mm 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: 71B14 | 71B5 | 80B14 | 80B5
Typical applications: conveyors, packaging machinery, feeders, small mixers

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Internal Links & Compatible Options

Same gearbox size, nearby ratios: jump to the NMRV050 ratio that best suits your output speed and torque requirements.

Same gearbox size, different output bores: jump to the NMRV050 25:1 bore size that best matches your shaft.

More Motovario worm gearboxes: Browse all NMRV050 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 NMRV050 gearbox commonly used for?

This gearbox is commonly used on conveyors, packaging machinery, feeders, small mixers, 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.