STM SPA
About
STM S.p.A., based in Calderara di Reno (Bologna), Italy, is a global manufacturer of power transmission solutions producing approximately 280,000 gearboxes annually across a 48,000 m² facility with 194 production machines. The company reported EUR 152 million in 2023 revenue, employs 536 staff, and sells through a network spanning 88 countries with 56% of production exported. STM organizes its products into four lines. The High Tech Line covers coaxial gearboxes, parallel shaft gearboxes, shaft-mounted gearboxes, bevel helical gearboxes, and planetary gearboxes for demanding continuous-duty applications. The Standard Line includes worm gearboxes, helical worm gearboxes, mechanical speed variators, and right-angle gearboxes for versatile cost-effective use. The Electronic Line offers electric motors, electronic speed variators, and inverters for integrated motion control. The Custom Line delivers application-specific engineered solutions. In water and wastewater treatment, STM gearboxes and gearmotors drive pumps, blowers, aerators, mixers, sludge collectors, screens, and conveyors. The TechButton online configurator enables rapid product selection with downloadable 2D/3D CAD models and datasheets, while the RED BUTTON service guarantees 24-72 hour delivery for urgent orders from 42,000 stock codes.
Key Products
Inline gear reduction units for pump drives and conveyor applications where input and output shafts are coaxially aligned.
Gear units with parallel input/output shafts for medium to high-torque applications such as mixer drives and sludge scrapers.
Compact gear units that mount directly onto driven shafts for space-saving installation on agitators and screen drives.
Right-angle gear units combining bevel and helical gearing for high-efficiency power transmission to pumps and conveyors.
High-ratio compact gear units for heavy-duty applications requiring high torque in a small footprint, such as centrifuge drives.
Compact right-angle gear units with worm gearing for low-speed, high-torque applications like dosing equipment and small conveyors.
Combined helical and worm gear units offering higher efficiency than pure worm drives for medium-duty pump and mixer applications.
Adjustable-speed mechanical drives for applications requiring variable output speed without electronic control.
IE-class electric motors paired with STM gearboxes for complete gearmotor drive packages.
Electronic variable frequency drives for precise speed control of pumps, blowers, and aerators in water treatment facilities.
Bespoke gearbox and gearmotor designs tailored to specific industrial requirements including non-standard mounting, ratios, and environmental conditions.
Web-based tool for selecting and configuring gearboxes, gearmotors, and electric motors with downloadable 2D/3D CAD models and technical datasheets.
Rapid delivery service guaranteeing shipment within 24-72 hours for urgent orders of gearboxes, gearmotors, and variators from available stock.
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