DANA Pump Variable Displacement – HD1 Closed loop

The HD1 series variable piston pumps for closed loop circuits are axial pistons pumps with swash plate design and through drive shaft on option. These pumps have been specifically designed for use in closed circuit hydrostatic transmissions.

DANA Pump Variable Displacement - HD1 Closed loop

DANA Pump Variable Displacement HD1 Closed loop

Feature | DANA Pump Variable Displacement HD1 Closed loop

The HD1 series delivery increases when swash plate’s angle of inclination increases from 0 to maximum position. Inverting the swash plate’s angle, the flow direction is inverted. The technical choices allow the new unit to operate at pressures up to of 400 bar [5800 psi].

HLR Manual lever with feed-back.
HIR Hydraulic proportional with feed-back.
HIN Hydraulic proportional without feed-back.
HER Electric proportional with feed-back.
HEN Electric proportional without feed-back.
HE2 Electric on-off.
HEH Electric proportional with hydraulic emergency override.
Automotive

Technical | DANA Pump Variable Displacement HD1 Closed loop

Displacement charge pump		cm³/giro [in³/rev]	11 [0.67]	14 [0.85]	18 [1.1]
Charge pump setting pressure		bar [psi]	22 [319)]
charge pump maximum pressure		bar [psi]	40 [580]
charge pump power cont. at 3400 rpm		kW [hp]	1.4 [1.88]	1.7 [2.28]	2.2 [2.95]
Maximum Pressure in the housing	Cont.	bar [psi]	4 [58]
	int	bar [psi]	6 [87]

Specifications | DANA Pump Variable Displacement HD1 Closed loop

HD1 Closed loop				055
Radial load		F_{q max}	N [lbf]	1900 [428]
Axial load		F_{ax max}	N [lbf]	1500 [337]
Displacement		Vg_max	cm³/giro [in³/rev]	55 [3.35]
Displacement		Vg_min	cm³/giro [in³/rev]	0 [0]
Pressure	cont.	p_nom	bar [psi]	450 [6525]
Pressure	peak	p_max	bar [psi]	480 [6960]
Max speed	cont.	n_max	rpm	3800
Max speed	int	n_max	rpm	4000
Min speed		n_min	rpm	500
Max flow at n_max		q_max	l/min [U.S. min]	209 [55.2]
Maximum power	Cont.	–	kW [hp]	146 [196]
Maximum power	int	–	kW [hp]	165 [221]
Max torque at Vg max	Cont. (p_nom)	T_nom	Nm [lbf•ft]	368 [271]
Max torque at Vg max	peak (p_max)	T_max	Nm [lbf•ft]	394 [291]
Moment of inertia		J	kg•m² [lbf•ft²]	0.0064 [0.156]
Weight⁽²⁾		m	kg [lb]	46 [101.4]