Worm Gearboxes

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 gearbox 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 keyed hollow bore, and ratios from 7.5:1 – 100:1. It uses standard B5 or B14 motors, and has optional output flanges, plug-in output shafts (single or double), and torque limiter.

P-MI Series

Double reduction, helical-worm gear is available in 13 sizes combinations, with input power ratings of 1/8th-5 HP. It comes standard with keyed hollow bore, and ratios from 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

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, plug-in slow speed shaft (single or double), and torque limiter

MU Series

The U series square body, metric worm gear, uses a modular design that excels in flexibility. Its light weight 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 as single worm reduction, helical-worm reduction and double worm reduction. The MU series metric design is interchangeable with international brands, including W and NMRV type series, and is available from U.S. inventory.

MU Series

Single reduction worm gear is available in 7 sizes, with input power ratings of 1/8th-25HP. It comes standard with a keyed hollow bore, ratios from 7.5:1 – 100:1. It uses standard B5 or B14 motors, and has optional output flanges, plug-in output shafts (single or double), and torque limiter.

P-MU Series

Double reduction, helical-worm gear is available in 15 size combinations, with input power ratings of 1/8th-5 HP. It comes standard with a keyed hollow bore, and ratios from 75:1-400:1. It uses standard B5 or B14 motors, and has optional output flanges, and plug-in output shafts (single or double).

C-MU Series

Double reduction compound worm gearbox, available in 6 size combinations, with input power ratings of 1/8th-2 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, plug-in output shaft (single or double), and 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

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