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HEMA POWER TAKE-OFFS: Technical FAQ
1. What distinguishes the quality of HEMA POWER TAKE-OFFS in the OA Series?
Our HEMA POWER TAKE-OFFS are engineered with reinforced cast iron housings and precision-ground gears. This ensures maximum torque density and structural integrity under heavy hydraulic loads.
2. Which Hema transmission models are compatible with this series?
The OA Series is fully compatible with Hema 5400, 5200, and 5000 gearboxes. We recommend verifying the model code on your gearbox identification plate before final installation.
3. What are the torque ratings for the Hema OA Series?
These units are designed for high-torque applications, typically supporting between 300 Nm and 500 Nm. This makes them ideal for waste management and heavy construction vehicles.
4. Is the engagement system pneumatic or mechanical?
We utilize pneumatic engagement as the primary standard. This allows for a smooth, air-shifted engagement from the cabin, reducing mechanical shock to the drivetrain.
5. Can I mount a hydraulic pump directly to the Hema PTO?
Yes. All Hayneks Hema PTOs support direct-mount configurations for ISO 4-bolt or UNI 3-bolt hydraulic pumps, minimizing power loss and vibration.
6. Why is gear ratio selection vital for these systems?
The internal gear ratio determines the pump speed relative to engine RPM. An optimized ratio ensures the system reaches the required flow rate without causing pump overspeed or heat.
7. Which industries rely most on HEMA POWER TAKE-OFFS?
These units are industry standards for logistics (tippers), municipal services (refuse collectors), and infrastructure (mobile cranes).
8. How do I prevent noise and premature wear during installation?
Proper backlash adjustment is key. Using our included specialized gasket kit prevents "gear whining" and ensures the longevity of both the PTO and the gearbox.
9. Are the mounting accessories included in the package?
Yes, every Hayneks unit is shipped with a complete mounting kit, including high-tensile studs, nuts, and a full set of precision gaskets.
10. Can these units handle continuous heavy-duty use?
While extremely durable, transmission PTOs are primarily for intermittent use. For continuous operation, ensure your hydraulic system has adequate oil cooling to protect the transmission life.


















