STM Variable Speed Gearbox

Technical Specifications of STM Variable Speed Gearmotor

The STM variable speed gearbox from Italy is designed with an adjustable transmission ratio ranging from 1.4 to 7.0. This range allows for precise control of output speed. Supported input power varies between 0.18 to 7.5 kW, making it suitable for standard three-phase motors. Output torque across different models ranges from 10 to 500 Nm. The gearbox housing is made of durable aluminum alloy or cast iron and features a corrosion-resistant coating. An integrated cooling system ensures stable performance within an operating temperature range of 0 to 40 degrees Celsius. Its compact design and low weight enable easy installation in confined spaces.

The STM gearbox input can be connected via standard IEC flange or direct shaft. Output options include plain shaft or flanged configuration. Speed adjustment is achieved through a conical disc and spring-loaded mechanism. This system allows continuous speed variation without stopping the machine. Maximum output speed in free-run mode reaches up to 1000 RPM. Internal lubrication with industrial-grade grease extends the gearbox’s service life. Operating noise levels remain below 65 dB, making it suitable for noise-sensitive industrial environments. STM gearboxes are manufactured under CE and ISO 9001 certifications and assembled in European production lines.