The new motors will extend the Hägglunds compact series downward to 10Nm/bar. With their power density and high flexibility, Bosch Rexroth says they will make hydraulic direct drives the optimal choice in lighter applications.
Initially, the focus for the Hägglunds CA 10 to 40 series will be injection moulding machines in the plastics industry. These machines represent a large portion of the demand at 50Nm/bar and below. Additional industries and further applications are set to follow in the very near future.
To achieve the power density of the CA 10 to 40 motors, Bosch Rexroth has reduced the motor diameter while refining the internal construction. These changes have no effect on reliability or output, which is why the motors deliver more kilowatts per kilo than any other. Full speed and full torque are available simultaneously, and both can be sustained for an indefinite time.
Benno Birke, Senior Vice President Technical for Industrial Hydraulics Controls and Cylinders, says: “The new CA 10 to 40 motors provide the same power as before but with far less weight – up to three times less than a competitor solution.”
For customers, the power density means energy and production efficiency. Compared with competitor solutions, CA 10 to 40 motors provide 10-15% more torque for the amount of energy put in.
“Because the hydro-mechanical losses in our motors are so much less, they consume less energy particular in the upper speed range,” says Birke.
Further efficiency comes from the flexibility in the series, which includes four basic models and a wide variety of displacements. Fourteen configurations in small torque steps allow tight dimensioning, as well as full optimisation in relation the hydraulic pumps. The configurations are achieved using just two mechanical interfaces, which means easy adaptation is also possible.
Combined with the unbeatable power and flexibility of the CA 10 to 40 series are the benefits specific to hydraulic radial piston motors. These include a built-in ability to withstand shock loads, as well as perfect internal symmetry. The latter ensures consistent torque throughout the revolution, as well as a perfect balance of forces that minimises noise and vibration.
From power density to high energy efficiency, the new Hägglunds CA 10 to 40 series means powerful benefits in plastics and beyond.