259
HYPR314
HYPR15
HYPR15
Hydraulic Pumps
Harken offers 1- and 2-speed pumps for hydraulic systems. Our 2-speed pump automatically shifts 
to the next speed when a preset point is reached. The 1-speed pump is a simpler alternative but features the 
same high-quality components. 1-speed pumps are used for smaller and midsize hydraulic systems, usually 
on MVP or compact panels. 2-speed pumps are used on systems with higher oil volume cylinders and need 
faster reaction time. They are also available on MVP panels. Pressure relief on 1- and 2-speed pumps is 
factory-set to a maximum of 5000 psi. Mounting patterns for all pumps are identical, making upgrades easy. 
An optional adhered isolation plate further improves load distribution by transferring torque directly 
to the mounting surface rather than the bolt holes when mounting without a face plate. Pumps have 
7-degree splined shafts to ensure a tight fit and to allow the handle to be mounted at the sailor’s preferred 
pumping angle.
Hydraulic Rotary Pumps
Harken offers two sizes of multi-speed, pedestal-driven rotary pumps for Grand Prix race boats. 
Pumps are made of corrosion-resistant hard lube-anodized aluminum, with aluminum, titanium, and 
stainless-steel components. Both pumps are bi-directional and have the same displacement if rotated in 
either direction. All pumps include a non-return valve on the outlet to prevent backflow.  
10 cc Pumps 
A female spline attaches these pumps directly to any Harken pedestal. Six double-stepped pistons save 
weight and feature connecting rods for piston return rather than springs. Three fasteners provide quick 
connect/disconnect mounting. The 10 cc pump shifts from 1st to 2nd gear both automatically and manually, 
with automatic shift points determined by the maximum output of the grinders. If fewer crew are grinding and 
not enough power is generated to reach the automatic shift point, pumps can be shifted manually.
Adjustable Cam Multiple Displacement Pump 
Developed for the America’s Cup foiling monohulls, these pumps allow adjustment of flow rates per available 
grinder input versus pre-set flow/pressure levels. The pump has two banks that may be adjusted by changing 
piston size with inserts along with different cam positions to allow for flow from 4.75 cc to 16.3 cc per 
revolution for each bank. Harken will help you determine which setup is best. 
If requirements change, Harken can upgrade the pump to a different set of pistons insert and cam position to 
meet them. The pump also has an option of a built-in shift block (manual or electric) making it a 2- or 
3-speed pump. A remote shift option (manual or electric) is also available. Please contact Harken for more 
information.
Optional isolation plates made of 
extremely resilient G10 improve load 
distribution by transferring torque 
directly to the mounting surface.
Part No.
Description
Output/stroke (push and pull)
Max
pressure
Ports/fi ttings
Weight
1st
2nd
3rd
in3
cc
in3
cc
in3
cc
psi
bar
Suction
Pressure
lb
kg
 HYPM1 
 1-speed pump with pressure relief 
 0.25 
 4.1 
 
 
 
 
 5000 
 345 
 3/8" hose barb  1/4" 37° JIC 
 3.2 
 1.44 
 HYPM2 
 2-speed pump/auto shift with pressure relief 
 0.99 
 16.3 
 0.25 
 4.1 
 
 
 5000 
 345 
 3/8" hose barb  1/4" 37° JIC 
 4.3 
 1.95 
 HYPM3MP  Pump anti-torque mounting plate 
 
 
 
 
 
 
 
 
 
 
 0.1 
 0.07 
2-Speed Pump
1-Speed Pump
10 CC rotary 
pumps
HYPR314
HYPR15
Output/Revolution
Max 
RPM
Max 
Pressure
input 
spline
1st
2nd
Ports/Fittings
Weight
Kit
Part No.
Description
in
3
cc
in
3
cc
psi
bar
suction
Pressure
lb.
kg
Repair
Seal
HYPR262
10 cc/rev two-speed pump
0.63
10.4
0.26
4.3
400
7500
517
25mm 
female 
spline
-6 JIC
-4 jic
6.3
2.85
HYKRPR262
HYKSPR262
Adjustable displacement pump
between 4.75 cc /.290 cubic inch 16.3 
cc/.994 cubic inch  per revolution for each 
bank. HYPR314 has two banks
400
7500
517
24 mm hex
-12 
SAE
 one or 
two -6 
SAE
13.73*
6.23*
HYKRPR314
HYKSPR314
5cc/rev one-speed pump
0.32
5.2
400
7500
517
15mm 
keyway
-6 JIC
-4 jic
4.1
1.85
HYKRPR15
HYKSPR15
Type
R = Repair
S = Seal
M = Manual
Speeds (1, 2, 3)
HYKRPM1
Repair/Seal Kit Part Number
*Weight of pump with 3/8 and 9/16 piston inserts
NEW

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