PMP 7.1R 130 Mixer Reducer

The PMP 7.1R 130 is a genuine OEM planetary gear reducer, purpose-built for 10–12 m³ concrete mixer trucks. It serves as the core drive unit for the mixing drum, delivering reliable power transmission under the toughest job-site conditions. This model is a direct replacement for original PMP units, ensuring seamless fit and consistent performance.

Compact yet robust, the reducer features a heavy-duty cast iron housing with a corrosion-resistant red paint finish. Its two-stage planetary gear design balances high torque output with space-saving dimensions, weighing approximately 330 kg (without oil). The reinforced output flange supports radial loads and compensates for up to ±6° misalignment, reducing stress on the mixer frame and drum.

Engineered for maximum durability, the unit is rated for a peak output torque of 71,000 Nm. Hardened and precision-machined gear surfaces ensure smooth operation and long service life, while high-capacity output bearings handle heavy axial and radial loads. It accepts a maximum input speed of 2,500 rpm, matching standard hydraulic motor specifications.

Lubrication is optimized for mixer duty cycles, with a 11.5 dm³ oil capacity that maintains stable temperature and pressure during continuous operation. The sealed housing prevents contamination from dust, water, or concrete debris, minimizing wear on internal components. Regular oil changes are the only routine maintenance required.

Widely used in original and aftermarket mixer fleets, the PMP 7.1R 130 is fully tested and certified to meet PMP’s strict quality standards. It offers dependable performance, easy installation, and low maintenance—making it the preferred choice for concrete mixer truck owners and service workshops.