Motovario NMRV130 20:1 Worm Gearbox – 45mm Output Bore

The Motovario NMRV130 20:1 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 45mm hollow bore, robust sealing, and a cast iron housing suited to day-to-day industrial use.

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Gearbox Overview

This NMRV130 gearbox combines a heavy-duty frame size with a 20:1 reduction stage, making it suitable for mixers, process machinery, materials handling equipment, heavier-duty industrial systems. 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 20:1 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: NMRV130
Gear ratio: 20:1
Output bore: 45mm hollow bore
Gearbox type: Worm gear reducer
Housing: Grey cast iron 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: 90B5 | 100-112B14 | 100-112B5 | 132B14 | 132B5
Typical applications: mixers, process machinery, materials handling equipment, heavier-duty industrial systems

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Internal Links & Compatible Options

Same gearbox size, nearby ratios: jump to the NMRV130 ratio that best suits your output speed and torque requirements.

Need a different gearbox size? explore nearby Motovario worm gearbox sizes available in 20:1.

More Motovario worm gearboxes: Browse all NMRV130 gearboxes Browse all worm gearboxes

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

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Frequently Asked Questions

What does a 20:1 worm gearbox do?

A 20:1 worm gearbox reduces motor speed and multiplies torque, giving slower and more controlled output for industrial machinery.

What is this NMRV130 gearbox commonly used for?

This gearbox is commonly used on mixers, process machinery, materials handling equipment, heavier-duty industrial systems, 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.