Motovario NMRV-P075 15:1 Worm Gearbox – 28mm Output Bore

Built for smooth and dependable mechanical speed reduction, this Motovario NMRV-P075 15:1 worm gearbox is ideal when you need balanced output speed reduction with useful torque increase. Its 28mm 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

This NMRV-P075 gearbox combines a medium-duty frame size with a 15:1 reduction stage, making it suitable for conveyors, packaging machinery, feeders, small mixers. It is typically chosen where a practical compromise between output speed and torque is needed, especially where installation space is limited and a right-angle drive is preferred.

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Why Choose This Configuration?

A 15:1 worm gearbox is typically chosen when the application needs balanced output speed reduction with useful torque increase. 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: NMRV-P075
Gear ratio: 15:1
Output bore: 28mm 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 | 90B14 | 90B5 | 100-112B14 | 100-112B5
Typical applications: conveyors, packaging machinery, feeders, small mixers

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Internal Links & Compatible Options

Same gearbox size, nearby ratios: jump to the NMRV-P075 ratio that best suits your output speed and torque requirements.

Same gearbox size, different output bores: jump to the NMRV-P075 15:1 bore size that best matches your shaft.

More Motovario worm gearboxes: Browse all NMRV-P075 gearboxes Browse all worm gearboxes

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

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Frequently Asked Questions

What does a 15:1 worm gearbox do?

A 15:1 worm gearbox reduces motor speed and multiplies torque, giving slower and more controlled output for industrial machinery.

What is this NMRV-P075 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.