Multiple Units
Double, Tandem and Multiple pumps
For open and closed loop operation
- Set up by combining our variable displacement pumps and self-regulating pumps. They can either supply larger volume flows or feed different circuits.
- The rated size and the type of the pump for open or closed circuits are variable. The sequential arrangement is determined by the maximum torque which can be transferred.
- Due to their swashplate design our motors can also be combined to form double and tandem motors.
Design characteristics HPR double pumps
- - two pumps of the same rated size, fitted back-to-back
- - common port plate housing
- - single or dual circuit
Design characteristics tandem and multiple pumps
- - two or more pumps, fitted face-to-back
- - open and/or closed circuit
- - tandem pumps: Pumps of the same type
- - multiple pumps: Pumps of different types
Product advantages double, tandem and multiple pumps
- - only one drive shaft required
- - no splitter box required for the pumps
- - compact design
- - individual control of each single pump
- - no adverse influence on functionality of the single rotating groups
- - advantages such as high dynamics and precise control remain in full
Design characteristics HMV double motors
- - two motors of the same rated size, fitted back-to-back
- - common ports for high pressure, servo-and control pressure
- - can be controlled individually or together
- - both motors can swivelled to 0 cc/rev
Product advantages double motors
- - high conversion range for smooth acceleration
- - simplified drive train
- - high tractive effort and high final speed
- - fast control response and high starting torque
Design characteristics tandem motors
- - two motors of the same type, fitted face-to-back
- - separate ports, individual control possible
- - both motors can swivelled to 0cc/rev
Product advantages tandem motors
- - double torque with the same gearbox interface by using the same flange as with the single motor
- - direct installation in the drive train, gearbox can be omitted
- - increased rotating speed and narrower dimensions than for single motors of the same nominal size in swash plate or bent axis design
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