H1 Pump General Specification
Design
Axial piston pump of cradle swashplate design with variable displacement
Direction of rotation
Clockwise, Counterclockwise
Pipe connections
Main pressure ports:
ISO split flange boss
Remaining ports:
SAE straight thread O-ring boss
Recommended installation
position
Pump installation position is discretionary, however the recommended control position is on the top or at the side
with the top position preferred.
If the pump is installed with the control at the bottom, flushing flow must be provided through port M14 located on
the EDC, FNR and NFPE control.
Vertical input shaft installation is acceptable.
If input shaft is at the top 1 bar case pressure must be maintained during operation.
The housing must always be filled with hydraulic fluid.
Recommended mounting for a multiple pump stack is to arrange the highest power flow towards the input source.
Consult Danfoss for nonconformance to these guidelines.
Auxiliary cavity pressure
Will be inlet pressure with internal charge pump. For reference see
H1P 045/053 Operating Parameters
.
Will be case pressure with external charge supply. Please verify mating pump shaft seal capability.
Technical data H1P 045/053
Feature
Size 045
Size 053
Displacement
45.0 cm
3
[2.75 in
3
]
53.8 cm
3
[3.28 in
3
]
Flow at rated (continuous) speed
153 l/min
[40 US gal/min]
183 l/min
[48 US gal/min]
Torque at maximum displacement
(theoretical)
0.72 N•m/bar
[437.7 lbf•in/1000 psi]
0.86 N•m/bar
[522.0 lbf•in/1000 psi]
Mass moment of inertia of rotating
components
0.00465 kg•m
2
[0.00343 slug•ft
2
]
0.00458 kg•m
2
[0.00338 slug•ft
2
]
Mass [weight] dry
41 kg [90 lb]
(without charge pump or auxiliary mounting flange)
Oil volume
1.3 l [0.34 US gal]
Mounting flange
ISO 3019-1 flange 101-2 (SAE B), Special bolt diameter
Input shaft outer diameter,
splines and tapered shafts
ISO 3019-1, outer Ø22 mm - 4 (SAE B, 13 teeth)
ISO 3019-1, outer Ø25 mm - 4 (SAE B-B, 15 teeth)
ISO 3019-1, outer Ø32 mm - 4 (SAE-B, 14 teeth)
Conical keyed shaft end similar to ISO 3019-1 code 25-3, taper 1:8
Auxiliary mounting flange
with metric fasteners,
Shaft outer diameter and splines
ISO 3019-1, flange 82 - 2, outer Ø16 mm - 4 (SAE A, 9 teeth)
ISO 3019-1, flange 82 - 2, outer Ø19 mm - 4 (SAE A, 11 teeth)
ISO 3019-1, flange 101 - 2, outer Ø22 mm - 4 (SAE B, 13 teeth)
ISO 3019-1, flange 101 - 2, outer Ø25 mm - 4 (SAE B-B, 15 teeth)
Suction port
ISO 11926-1 – 1
5
∕
16
–12 (SAE O-ring boss)
Main port configuration
Ø19 mm - 450 bar split flange boss per ISO 6162, M10x1.5
ISO 11926-1 – 1
5
∕
16
–12 (SAE O-ring boss)
Case drain ports L2, L4
ISO 11926-1 – 1
1
∕
16
–12 (SAE O-ring boss)
Other ports
SAE O-ring boss
Customer interface threads
Metric fasteners
Technical Information
H1 Axial Piston Single Pumps, Size 045/053
Technical specifications
©
Danfoss | May 2017
11063344 | BC00000059en-US1001 | 5
