Bonfiglioli W 75 10:1 Worm Gearbox – 28mm Bore, IEC Motor Input

This Bonfiglioli W 75 10:1 worm gearbox is a right-angle speed reducer built around the modular worm gearbox platform. It is suited to general industrial machinery and medium-duty transmission setups where higher output speed and lighter reduction are required. This version uses a 28mm hollow output bore and modular IEC motor input options for straightforward industrial integration.

---

Gearbox Overview

The Bonfiglioli W 75 size is part of the VF-W worm gearbox range and is designed for flexible installation in multiple mounting positions. In this 10:1 configuration, it offers High output speed, lower torque multiplication, and efficient right-angle power transfer. The hollow bore output format makes it practical for direct shaft-mount transmission layouts where compact right-angle drive arrangements are preferred.

---

Why Choose This Configuration?

This exact model is best suited to buyers who need a Bonfiglioli W 75 gearbox with a 10:1 ratio and 28mm output bore. Compared with lower ratios, this version is selected where faster shaft speed is needed without using a direct-drive arrangement. Compared with higher frame sizes, it keeps the package more compact while retaining the modular mounting and input flexibility shown in the datasheet.

---

Technical Details

Series: Bonfiglioli VF-W worm gearbox range
Gearbox size: W 75
Reduction ratio: 10:1
Output bore: 28mm hollow bore
Mounting positions: B3, B6, B7, B8, V5, V6
Motor mounting options: B5, B14, or HS solid input depending on size/configuration
Typical input configurations: 71B5, 71B14, 80B5, 80B14, 90B5, 90B14, 100B5-112B5, 100-112B14
Lubrication: Factory-charged with long-life synthetic lubricant. Datasheet lubricant reference: Shell Omala S4 WE 320.
Approximate gearbox weight: 10kg

---

Internal Links & Compatible Options

Same gearbox size, different ratios: explore nearby ratios for the Bonfiglioli W 75 gearbox.

Same ratio, different gearbox sizes: explore nearby sizes offering a 10:1 ratio.

More Bonfiglioli gearboxes: Browse all worm gearboxes Browse all gearboxes

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

---

Frequently Asked Questions

What does a 10:1 worm gearbox do?

A 10:1 worm gearbox reduces input speed by a factor of 10, increasing torque at the output while providing a compact right-angle drive arrangement.

What motor inputs fit this Bonfiglioli W 75 gearbox?

This size is available with modular IEC motor input options and, depending on the configuration, can also be supplied with a solid input shaft according to the VF-W series ordering structure.

What mounting positions are available?

The VF-W datasheet lists mounting positions B3, B6, B7, B8, V5, V6, allowing the gearbox to be installed to suit different machine layouts.

What lubricant does this gearbox use?

The datasheet specifies a long-life synthetic lubricant, with Shell Omala S4 WE 320 listed in the lubrication section for the VF-W range.

Is this a hollow bore gearbox?

Yes. This product uses a 28mm hollow bore output, making it suitable for shaft-mounted output arrangements.