Worm Gearbox / Gear Reducer

SITI metric worm gear units are available in 12 sizes and are built of pressure die-cast aluminum and cast iron. They are interchangeable with most European brands and are available with multiple bolt-on components to customize for your application, including; helical input, double worm combinations, multiple output flanges per size, torque arm, shaft covers, and single & double output shafts.

MI Series

The I series, compact, round body, metric reducer, fits where other gearboxes can’t. It is significantly smaller and lighter than comparable American square cast iron designs, saving space and money. It offers ratios up to 8,000:1 and a torque range of 140-26,500 lb. inch. It is available as single worm reduction, helical-worm reduction and double worm deduction. It is perfect for commercial and industrial applications when size matters. The MI series metric design is interchangeable with international brands, including VF and SWO type series, and is available from U.S. Inventory.

M-I Series

Single reduction worm gear is available in 12 sizes, with input power ratings of 1/8th-75 HP. It comes standard with a keyed hollow bore and ratios from 7.5:1 to 100:1. It uses standard B5 or B14 motors and has optional output flanges, plug-in output shafts (single or double), and torque limiters.

P-MI Series

Double reduction helical-worm gear is available in 13 size combinations with input power ratings of 1/8th-5 HP. It comes standard with a keyed hollow bore and ratios of 75:1-400:1. It uses standard B5 or B14 motors and has optional output flanges and plug-in slow-speed shafts (single or double).

C-MI Series

power ratings of 1/8th-10 HP. It comes standard with a keyed hollow bore and ratios of 225:1-8,000:1. It uses standard B5 or B14 motors and has optional output flanges, a plug-in slow speed shaft (single or double), and a torque limiter.

MU Series

The U series square body metric worm gear uses a modular design that excels in flexibility. Its lightweight design saves time and money, especially when compared to American cast iron designs, and is perfect for commercial and industrial applications. It offers ratios up to 8,000:1 and a torque range of 140-26,500 lb. inch. It is available in single-worm reduction, helical-worm reduction, and double-worm reduction. The MU series metric design is interchangeable with international brands, including the W and NMRV type series, and is available from U.S. inventory.

MU Series

Single reduction worm gear is available in 12 sizes, with input power ratings of 1/8th-75 HP. It comes standard with a keyed hollow bore and ratios from 7.5:1 to 100:1. It uses standard B5 or B14 motors and has optional output flanges, plug-in output shafts (single or double), and torque limiters.

P-MU Series

Double reduction helical-worm gear is available in 13 size combinations with input power ratings of 1/8th-5 HP. It comes standard with a keyed hollow bore and ratios of 75:1-400:1. It uses standard B5 or B14 motors and has optional output flanges and plug-in slow-speed shafts (single or double).

C-MU Series

The double reduction compound worm gearbox is available in 14 size combinations, with input power ratings of 1/8th-10 HP. It comes standard with a keyed hollow bore and ratios from 225:1-8,000:1. It uses standard B5 or B14 motors and has optional output flanges, a plug-in slow speed shaft (single or double), and a torque limiter.

Benefits

  • Space Saving Designs
  • Flexible Mounting
  • Low Noise & Vibration Free
  • Cost-effective
  • Long Operating Life
  • Ratios from 7.5:1 to 8,000:1
  • Interchangeable with European Brands

Versatile

  • 12 Sizes
  • Keyed Hollow Bore Standard or Plug-in Shaft
  • Lubricated for life (sizes 25-75)
  • B5 & B14 Motor Adapters
  • Double Extended Input or Output Shafts
  • Multiple flange & Feet Configurations
  • Torque Limiter Option

Performance

  • 0.5 – 15 HP input
  • Max torque = 26,550 lb. in. / 3,000 Nm
  • Differential Device provides Zero Speed

Applications

  • Packaging
  • Pumps
  • Conveying
  • Textile
  • Agitators
  • Logistics/Unit Handling
  • Food & Beverage

Downloadable Content

MI Series Download

MU Series Downloads

MU Worm Gear Spare Parts

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Have Questions? Contact Us

We’re here to answer your questions and provide the information you need to know.

A Worm Gearbox Reducer is a form of reduction gearbox with a worm pinion input and a right-angle output worm gear. Based on the reduction ratio, this form of reduction gearbox is typically used to convert a motor's rated speed into a low-speed output with a higher torque value. Due to the small diameter of its output gear, the worm gearbox reducer is one of the most compact reduction gearboxes available and can frequently solve space-saving issues.


Popular types of speed reducers include worm gearbox reducers, which offer the greatest speed reduction in the smallest package. With a high ratio of speed reduction and a high torque output multiplier, it is not surprising that worm gearbox reducers are utilized in numerous power transmission systems.


How do worm gears do their job?


The worm receives rotational energy from a motor. The worm rotates against the worm wheel, while the screw face exerts force against the worm wheel via the teeth. The force pushes against the worm wheel.


Advantages of a worm gearbox


  • High gear ratio
  • High torque multiplication
  • Quiet operation
  • Shock load absorption

Where would you use a worm gearbox?


Worm Gearbox Reducer in Dubai, UAE, should be considered when your application requires a rapid halt with shock loading within limited space.


Due to their unique design, worm gearboxes are utilized in a variety of industrial applications. The following are some applications of worm gearboxes:


  • Mining
  • Presses
  • Rolling mills
  • Escalator/elevator drive systems
  • Manufacturing and Packaging
  • Conveyor belts
  • Tuning instruments
  • Automated gates

How do you know what size and style to buy?


By looking at the application requirements and project specifications, you can figure out the right size and style of speed reducer. Our expert support team is always ready to help you choose the right size of reducer for your purpose.


Contact Pokhara, one of the worm reduction gearbox suppliers in Dubai, UAE, to find out more about our speed reducers or to get a price for a custom speed reducer.