Overview
The Transtecno CMM series is a double reduction worm gearmotor range that pairs two worm gear stages with an AC electric motor in a single compact unit. This arrangement produces very high reduction ratios, from 75:1 all the way up to 3600:1, making it possible to achieve extremely low output speeds with substantial torque from a relatively small motor.
Built with die cast aluminium housings across most of the range (sizes 026 through 110), the CMM series keeps overall weight down while maintaining structural integrity. The largest size, 130, uses a cast iron housing for added strength in heavier duty applications. Every unit ships filled with permanent synthetic oil at viscosity grade 320, so there is no need for oil changes or scheduled lubrication maintenance once installed.
For Australian poultry operations, the CMM range is a proven solution. The modular design of these gearmotors means they adapt well to the specific demands of automated window and curtain systems inside poultry sheds, where reliable low speed drive is essential for climate control.
Key Features
The CMM series stands out for its modular flexibility and robust construction. Each gearmotor can be configured with a range of IEC standard motors from frame size 56 through to 90, in both B5 flange and B14 face mount options. This makes sourcing replacement motors straightforward and keeps your operation running with minimal downtime.
Permanent synthetic oil lubrication across sizes 026 to 110 means these units are genuinely fit and forget. They can be mounted in any of eight standard positions without requiring different lubrication setups. For the size 130 unit, oil quantity varies with mounting orientation, but detailed guidance is provided for each position.
The larger sizes in the range (090, 110 and 130) feature double taper roller bearings on the worm shaft, providing improved load handling and extended service life where higher forces are at play.
Optional accessories include single and double output shafts, torque arms for reaction load support, safety covers and washdown covers. The washdown cover option is particularly relevant for food production environments where regular cleaning is part of the daily routine.
Common Applications
The CMM double reduction gearmotor is well suited to applications where you need high torque at very low rotational speeds, and where space is limited. In the Australian poultry sector, these units are widely used to automate ventilation windows inside sheds. Windows in poultry farms are often positioned in hard to reach locations and need to open and close reliably without manual intervention. The CMM gearmotor, combined with a three phase electric motor, provides a compact and dependable drive solution for this purpose.
Beyond poultry, the CMM range serves a broad cross section of industries. Common uses include slow speed conveyor drives, mixing and agitation systems, packaging lines, gate automation and general materials handling. Any application that calls for a compact gearmotor delivering significant torque reduction from a small input motor is a candidate for the CMM series.
Selection Considerations
Choosing the right CMM combination starts with understanding your required output speed and torque. The range offers 13 different size combinations, each covering a specific band of ratios and output torques. Smaller combinations like the CMM 026/026 are suited to lighter loads, while the CMM 063/130 can deliver output torques well in excess of 2000 Nm.
It is important to verify that the output torque you need does not exceed the rated capacity for the selected ratio and size combination. Transtecno technical data tables provide confirmed values for output speed, torque and service factor across each model and motor pairing, and our team can help you cross reference these against your application requirements.
Motor selection is equally important. The CMM range accepts both three phase (SMT, TS, T2A, T3A series) and single phase (SMM series) motors, with power ratings from 0.04 kW up to 2.2 kW depending on the gearbox size. If your site runs on single phase power, the smaller combinations paired with an SMM motor may be the right fit.
Mounting orientation should also be considered at the specification stage. While sizes 026 through 110 are lubricated for life and can be installed in any position, the size 130 requires oil quantity adjustments depending on whether it is mounted horizontally, vertically or on its side.
Support and Enquiries
Motordrives Australia supplies the full Transtecno CMM double reduction worm gearmotor range with local technical support. Whether you are specifying a gearmotor for a new poultry shed build, replacing an existing unit, or exploring options for an industrial automation project, we can assist with product selection, sizing calculations and lead times.
Complete the enquiry form on this page with your application details and one of our team will be in touch to discuss the best CMM configuration for your needs.
