SITI

SITI Gearboxes UK – MI Worm Gearbox Supplier for Industrial Drive Applications

SITI gearboxes UK are a trusted choice for compact right-angle speed reduction, torque transmission and industrial drive applications. The SITI MI worm gearbox range is commonly used across conveyors, packaging machinery, automation systems, handling equipment, processing machinery, production lines and general OEM machine builds.

At Worm Gear Motors Online, we supply SITI MI worm gearboxes by size, ratio and application requirement. Whether you are replacing an existing SITI gearbox, matching a worn unit from a machine, or selecting a new worm reducer for a motor-driven system, this brand page helps you move quickly into the correct SITI MI size family.

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SITI Gearboxes for Industrial Power Transmission

SITI manufactures industrial drive products for mechanical power transmission, including worm gearboxes, geared units, planetary gearboxes, mechanical variators and electric motors. SITI gearboxes are used where machinery needs reliable speed reduction, increased output torque and dependable drive performance across industrial applications.

For UK buyers, SITI gearboxes are a strong option when you need a recognised European drive brand, practical gearbox size families, common industrial ratios and support selecting the correct motor input, output bore, reduction ratio and mounting arrangement. The MI worm gearbox range is especially useful for replacement applications where the existing gearbox nameplate, shaft bore, ratio and mounting style need to be matched accurately.

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Shop SITI Worm Gearboxes by Size Family

Browse the main SITI MI worm gearbox sizes below. Smaller MI sizes are ideal for compact low-load machinery, while larger SITI worm gearboxes provide increased bore size, stronger torque capacity and better suitability for conveyors, production equipment and heavier-duty industrial machinery.

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SITI MI Worm Gearbox Size Guide

Use the guide below to compare the SITI MI worm gearbox size families. As the MI frame size increases, the gearbox is generally suited to higher torque requirements, larger output bores, heavier machinery and more demanding industrial applications.

SITI MI Size	Typical Application Level	Best For
MI30	Compact light-duty applications	Small conveyors, light automation, compact machinery and low-power drive systems
MI40	Light to medium-duty applications	Small production equipment, light conveyors, packaging machinery and general machine drives
MI50	Medium-duty applications	Conveyors, packaging equipment, handling systems and OEM machinery
MI60 / MI70	Medium to heavier-duty applications	Industrial conveyors, production machinery, processing equipment and machine drive systems
MI80	Higher torque industrial applications	Larger conveyors, heavier machine drives, production lines and replacement gearbox applications
MI110	Heavy-duty industrial applications	High-torque gearbox replacements, demanding conveyors and larger industrial machinery

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Why Choose SITI MI Worm Gearboxes?

SITI MI worm gearboxes are designed for compact right-angle power transmission, making them suitable for machinery where the motor and driven shaft need to sit at 90 degrees. The range covers practical industrial frame sizes and common worm gearbox applications, helping buyers match the gearbox to the required output speed, torque, shaft bore, ratio and mounting arrangement.

The smaller MI30, MI40 and MI50 sizes are commonly used on compact machinery and medium-duty applications, while MI60, MI70, MI80 and MI110 gearboxes are better suited to applications needing increased torque capacity, larger bore sizes and stronger industrial drive performance. If you are unsure which size to choose, send us your motor power, required output speed, ratio, bore size, mounting details and any existing gearbox nameplate photos.

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SITI Replacement Gearboxes & Equivalent Gearbox Support

If you need a SITI replacement gearbox, the most important details to confirm are the MI frame size, reduction ratio, output bore, input flange, mounting position and motor size. Many gearbox replacement enquiries come from worn or failed units where the customer needs a like-for-like SITI MI gearbox or a suitable equivalent worm reducer.

Worm Gear Motors Online can help match SITI worm gearbox replacements using nameplate information, photos, shaft measurements and motor details. If your existing gearbox is no longer available or you are comparing SITI against another worm gearbox brand, contact us and we can help shortlist the closest suitable option.

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Helpful SITI Gearbox Tools & Compatibility Links

All SITI Worm Gearboxes |
All Worm Gearboxes |
IEC Electric Motors |
Gear Ratio & Speed Calculator |
Output Torque Calculator |
Service Factor Calculator

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SITI Gearbox FAQs

What are SITI gearboxes used for?

SITI gearboxes are used for industrial power transmission, speed reduction and torque multiplication in conveyors, packaging machinery, automation systems, handling equipment, processing machinery and OEM machine builds. The MI worm gearbox range is especially suited to compact right-angle drive applications.

Are SITI gearboxes available in the UK?

Yes. Worm Gear Motors Online supplies SITI gearboxes in the UK, including MI worm gearbox size families for compact industrial drive applications. If you need a specific ratio, bore size or motor input, contact us and we can help confirm the best option.

How do I choose the right SITI gearbox size?

Choose the correct SITI gearbox size based on output torque, reduction ratio, shaft bore, motor input flange, mounting style and duty cycle. Smaller sizes suit compact lighter-duty machines, while larger sizes provide more bore size and torque capacity.

Can SITI MI gearboxes be used with IEC motors?

Yes. SITI MI worm gearboxes are commonly used in electric motor driven applications and can be matched to suitable IEC motor frame and flange arrangements depending on the selected gearbox size, input type and ratio.

Are SITI worm gearboxes suitable for replacement applications?

Yes. SITI worm gearboxes can be used for replacement applications when the ratio, bore size, motor input and mounting style match the existing gearbox. Send us the nameplate details and we can help confirm the closest replacement.

What details do I need to match a SITI replacement gearbox?

To match a SITI replacement gearbox, send the gearbox frame size, ratio, output bore, motor flange type, mounting position, motor power and any photos of the existing gearbox nameplate. These details help confirm whether the replacement needs to be MI30, MI40, MI50, MI60, MI70, MI80 or MI110.

Do you offer help selecting a SITI gearbox?

Yes. If you are unsure which SITI gearbox you need, send us the motor power, required output speed, ratio, bore size, mounting style and any photos of the existing unit and we will help identify the most suitable option.