Product Selection · Application Guide
High-pressure pumping duty and fail-safe boom rotation — the QJM radial piston motor and ZCM3 transmission pairing on a concrete pump truck.

Pumping concrete up a boom is sustained high-pressure work — the drive runs near its continuous rating for the whole pour, while the slew drive positions the boom tip within centimetres.
Motor roles in this machine
- QJM — pumping drive: Ball-piston radial motor built for continuous high-pressure duty, keeping delivery steady through the full pour. QJM reference →
- ZCM3 — turret slew drive: Integrated motor-gearbox-brake rotates and holds the boom fail-safe over the pour. ZCM reference →
See also the BMH agitator variant and the full-system configuration. For sizing details, contact our engineers.
![Concrete Pump Truck: [QJM] & [ZCM]](https://thoth-hydraulics.com/wp-content/uploads/2026/07/case-48-concrete-pump-truck-qjm-zcm3-1100x450.jpg)