Overview
The Transtecno CMP series pre-stage worm gearmotors combine a worm speed reducer with an AC motor, connected through a dedicated pre-stage unit with a fixed gear ratio of i=3. This arrangement extends the available overall ratio range significantly, reaching up to 300:1, without the complexity or cost of a full combination gearbox.
For Australian poultry operations, this means you get the torque output you need for slow speed, high force applications while keeping the drive package compact and straightforward. Whether you are running screw feeders through a long shed, lifting troughs for daily cleaning, or automating ventilation windows, the CMP series delivers reliable performance in a format that suits real world agricultural conditions.
The modular design is what truly sets this range apart. With a broad selection of input and output kits, each unit can be configured to match your specific shaft, flange and mounting requirements. This flexibility reduces the need for custom brackets or adapters, saving time during installation and future maintenance.
Key Features
The CMP pre-stage unit uses ground gears, which translates to noticeably lower operating noise compared to cut gear alternatives. In enclosed poultry environments where noise can affect bird welfare and worker comfort, this is a meaningful advantage.
All units from size 026 through 110 use die-cast aluminium housings, keeping weight down and offering natural corrosion resistance in the humid, often chemically aggressive environments found in poultry facilities. For applications requiring greater structural strength, the size 130 uses a robust cast iron housing.
Lubrication is permanent and maintenance free. Every CMP gearmotor ships filled with synthetic oil rated at viscosity grade 320, suitable for all six mounting positions. There is no need to schedule oil changes or monitor fluid levels under normal operating conditions, which is particularly valuable in remote or hard to access installations.
Sizes 090, 110 and 130 feature double taper roller bearings on the worm shaft, providing higher axial and radial load capacity for demanding applications where belt or chain drives impose significant forces on the gearbox output.
Common Applications
In poultry farming, the CMP series finds its place across several critical systems. Screw feeding lines rely on consistent, low speed rotation to distribute feed evenly throughout the shed. The extended ratio range available through the pre-stage unit allows you to achieve the precise output speed needed without oversizing the motor.
Trough maintenance is another area where these gearmotors prove their worth. When feeding troughs need to be raised for cleaning, inspection or repair, a CMP gearmotor provides the controlled lifting force required. The self-locking characteristics of the worm gear stage also help hold the load in position without additional braking hardware.
Automated window systems benefit from the CMP configuration as well. Opening and closing large ventilation panels requires high torque at very low speeds, exactly the operating envelope this pre-stage arrangement is designed for. By using the pre-stage unit rather than a separate combination gearbox, the overall package stays compact and the mechanical complexity is reduced.
Beyond poultry, the CMP range is equally at home in general material handling, packaging lines, and small conveyor systems found across Australian manufacturing and processing facilities.
Selection Considerations
Choosing the right CMP configuration starts with knowing your required output speed and torque. The pre-stage always contributes a fixed 3:1 reduction, so the overall ratio is three times the worm stage ratio. For example, pairing the pre-stage with a 20:1 worm reducer gives you a combined 60:1 ratio, while a 100:1 worm stage produces a total 300:1 reduction.
Motor power selection should account for the thermal rating of the gearbox. The nominal input power figures listed in the technical data represent mechanical input power, which must be adjusted by the thermal factor for continuous duty applications. Our team can assist with this calculation to ensure you select a combination that will run reliably in your specific ambient conditions.
Output shaft configuration is another important decision. Options include single solid shafts, double output shafts and hollow output shafts. Hollow shafts are often preferred in conveyor and feeder applications because they allow direct mounting onto the driven shaft, eliminating the need for couplings and reducing alignment issues.
Flange mounting options follow IEC standards, with B5 and B14 configurations available depending on the gearbox and motor size. This ensures compatibility with a wide range of standard motors, giving you flexibility in sourcing and future replacement.
If your operating environment involves frequent washdown or exposure to moisture, ask us about the optional washdown cover kit, which provides additional protection for the motor input side of the gearbox.
Support and Enquiries
Selecting the right gearmotor for your poultry or agricultural application does not have to be complicated. Our technical team understands the demands of Australian farming environments and can guide you through the sizing process, from initial torque and speed requirements through to mounting configuration and environmental protection.
Whether you need a single unit for a specific machine or a bulk supply for a new shed build, we are here to help. Fill out the enquiry form on this page with your application details and we will come back to you with a tailored recommendation.
