Parker introduces the NX8xHM motor range for low-voltage electro-hydraulic pumps
The new permanent magnet AC (PMAC) motor offers a cost-effective solution for electro-hydraulic pumps in 48Vdc construction vehicles, mini excavators, and on-highway truck steering applications and auxiliaries.
Among the major benefits of the NX8xHM motor series, which is available for battery voltages from 24Vdc to 96Vdc, is its ease of implementation. The availability of four threaded holes on all sides provides an easy mechanical mounting interface. In addition, the motor is ready to fit via the direct SAE A pump-mounting interface (ISO 3019/2 as an option), while lugs facilitate the easy connection of power cables. The result is a hassle-free installation that minimises both cost and project lead times.
Although designed for natural convection cooling at ambient operating temperatures of -40°C to +85°C, it is possible to increase the torque and power performances of the motor simply by adding cold plates to its sides. A PT1000 thermal sensor ensures the highly reliable control of internal temperature, while a membrane breather vent serves to minimise internal condensation. Importantly, the motor’s IP67 ingress protection rating and its capability to work immersed in oil supports reliable and noiseless operation.
In terms of precision and repeatability, Sin/Cos speed feedback matches the encoder direction to the direction of the NX8xHM motor. Here, outputting analogue voltages with a sinusoidal shape allows interpolation of the signal to yield higher feedback resolution, which is a benefit for both velocity and feedback loops.
The NX8xHM modular motor range is available in three different lengths for a rated torque of up to 61Nm, with up to 10 windings per length supporting optimised efficiency that adapts the speed to the battery voltage. In total, nine standard motors are available in the range offering speeds up to 5000rpm and rated power up to 10.4kW. If none of the models meet exact requirements, other motor performances are available on request.
Learn more about the NX8xHM motor series at: https://ph.parker.com/gb/en/product-list/nx8hm-low-voltage-motor-for-electro-hydraulic-pump-applications.