Parker Hannin Corporation
Hydraulic Pump and
Power Systems Division
Marysville, Ohio USA
Bulletin HY28-2665-02/SVC/EN
Medium Pressure Axial Piston Pumps
P1/PD Maintenance
9
P1/PD 28cc, Model Ordering Code
028 P S 5 A 00
Adjustable
Displacement
Stops
Port
Type
Thru-Drive
Mounting
Pad/Coupling
Paint
Special
Features
Pump
Series
Displacement
28cc/rev.
(1.71 in³/rev)
Mounting
& Ports
Open Circuit
Port
Orientation
Shaft
Rotation
Design
Letter
Additional
Control
Options
Control
Options
Configuration
Single
Shaft
Seal
Shaft
Options
Fluorocarbon
Seal Material
P
Electronic valve with zero displacement default
T
Electronic valve with max displacement default
S
Electronic valve with zero displacement default and hydromechanical Pmax
U
Electronic valve with max displacement default and hydromechanical Pmax
W
Electronic valve with zero displacement default (CANBUS compatible)
X
Electronic valve with max displacement default (CANBUS compatible)
Y
Electronic valve with zero displacement default and hydromechanical Pmax (CANBUS compatible)
Z
Electronic valve with max displacement default and hydromechanical Pmax (CANBUS compatible)
*** W, X, Y and Z only available with *D* and *Y*
0
No ECU
D
Proportional displacement control
Y
Proportional pressure control
Electronic Control Options
# #
Paint
00 No Paint
PB Black Paint
Shaft Options
01
Splined shaft - SAE B-B 15T
02
Keyed shaft - SAE B-B 1" Dia.
04
ISO keyed 25MM Dia.
08
Splined shaft - SAE B 13T
Shaft Rotation
R Clockwise
L Counterclockwise
Pump Series
P1 Mobile
PD Industrial
Configuration
M Mobile (P1)
S Industrial (PD)
Mounting & Ports
S
SAE B Pilot SAE Work Ports
with SAE Aux Ports
A
SAE B Pilot Metric Work Ports
with BSPP Aux Ports
M
ISO - 100MM Pilot Metric Work Ports
with Aux Ports
B
ISO - 100MM Pilot Metric Work Ports
with BSPP Aux Ports
Adjustable Displacement Stops*
(For E & R Port Orientation Only)
0 None
1 Adjustable maximum displacement stop
2 Adjustable minimum displacement stop
3
Adjustable maximum and minimum
displacement stop
*Not available with Thru-Drive
Port Orientation
E End Ports
R Side ported with ripple chamber
T Side ported with through drive
Control Options
C0
Pressure limiter
1160.30 - 4061.05 PSI (80 - 280 bar)
C1
Pressure limiter
290.08 - 1160.30 PSI (20 - 80 bar)
L0
Load sensing 145.04 - 435.11 PSI ∆P
(10 - 30 bar ∆P) with pressure limiter
1160.30 - 4061.05 PSI (80 - 280 bar)
L1
Load sensing 145 - 435 PSI ∆P
(10 - 30 bar ∆P) with pressure limiter
290 - 1450 PSI (20 - 100 bar)
L2
Load sensing
145.04 - 435.11 PSI ∆P
(10 - 30 bar ∆P)
with bleed & pressure limiter
1160.30 - 4061.05 PSI (80 - 280 bar)
AN*
Pilot operated pressure limiter with
ISO4401 interface & SAE 4 Vent Port
AM
Pilot operated pressure limiter with
mechanical adjustment and SAE 4 Vent
Port
AE
Pilot operated pressure limiter with
mechanical and electrical adjustment 12 VDC
AF
Pilot operated pressure limiter with
mechanical and electrical adjustment 24 VDC
##
See chart below for electronic control options
*Not functional control as such
Thru-Drive Mounting Pad/Coupling
0
No Thru-Drive
A
SAE 82-2 (A), 16 (A), 9T coupling
H
SAE 82-2 (A), 19 (--), 11T coupling
B
SAE 101-2 (B), 22 (B) , 13T coupling
Q
SAE 101-2 (B), 25 (B-B), 15T coupling
Port Type
0
Flange Ports
2
Threaded Ports
Additional Control Options
0
No other options
2
Displacement sensor **
**Mandatory with “W**”, “X**”,
“Y**”, “Z**” “*D*” and “*Y*”