Motovario NMRV040 80:1 Worm Gearbox – 20mm Output Bore

Built for smooth and dependable mechanical speed reduction, this Motovario NMRV040 80:1 worm gearbox is ideal when you need very low output speed with maximum torque multiplication. Its 20mm output bore, modular IEC input arrangement and durable die-cast aluminium construction make it a practical choice for machinery builders and replacement projects.

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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 80:1 configuration it is normally selected where high torque and slow, controlled output are the priority, while still keeping the simplicity and space-saving benefits of a compact 90° gearbox.

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Why Choose This Configuration?

A 80:1 worm gearbox is typically chosen when the application needs very low output speed with maximum torque multiplication. Compared with lower ratios it trades output speed for more torque multiplication, while compared with higher ratios it retains a more practical shaft speed for general machinery.

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Technical Details

Gearbox size: NMRV040
Gear ratio: 80:1
Output bore: 20mm 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 80:1 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 80:1 worm gearbox do?

A 80:1 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.