Rossi MRV-40-UO3A Worm Gearbox Reducer Hollow Shaft

The Rossi MRV-40-UO3A Worm Gearbox Reducer is a compact 25:1 worm-drive gearhead designed for low-speed, high-torque motion in small automation and equipment integrations. It features a hollow output shaft for easy coupling to driven shafts and a 71 mm IEC input interface (D71, B5 flange) to match standard Rossi motor frames while preserving a slim footprint. The unit is designed to accept motors up to about 0.37 kW, a sizing constraint dictated by the input flange and shaft size, and its 25:1 reduction yields an approximate output speed of 56 rpm when driven from a typical 1,400 rpm motor, enabling smooth, controlled operation in applications such as conveyors, positioning stages, or automated assembly lines. The MRV-40 variant with UO3A designation emphasizes hollow-shaft compatibility, helping engineers implement compact drive trains without needing extra adapters, while maintaining Rossi's MRV form factor for straightforward integration with other MRV family components.