3
Parker Hannifin
Pump and Motor Division
Trollhättan, Sweden
Service Manual
Series F11
Bulletin HY30-5503-M1/UK
General information
F11 is bent axis, fixed displacement heavy-
duty motor/pump series. They can be used
in numerous applications in both open and
closed loop circuits.
Series F11 is available in the following
frame sizes and versions:
- F11-5, -6, -10, -12, -14 and -19 with
CETOP mounting flange and shaft end.
- F11-6, -10, -12 and -14 with ISO flange
and shaft
- F11-6, -10. -12, -14 and -19 with SAE
flange and shaft
Thanks to the unique spherical piston de-
sign, F11 motors can be used at unusually
high shaft speeds. Operating pressures to
420 bar provides for the high output power
capability.
The 40° angle between shaft and cylinder
barrel allows for a very compact, lightweight
motor/pump.
The laminated piston ring offers important
advantages such as low internal leakage
and thermal shock resistance.
The pump version has highly engineered
valve plates for increased selfpriming speed
and low noise, available with left and right
hand rotation.
The F11 motors produce very high torque at
start-up as well as at low speeds.
Our unique timing gear design synchronizes
shaft and cylinder barrel, making the F11
very tolerant to high ’G’ forces and torsional
vibrations.
Heavy duty roller bearings permit substan-
tial external axial and radial shaft loads.
The F11’s have a simple and straightfor
-
ward design with very few moving parts,
making them very reliable motors/pumps.
The unique piston locking, timing gear and
bearing set-up as well as the limited num-
ber of parts add up to a very robust design
with long service life and, above all, proven
reliability.
Note!
F11-150 and -250 have been updated to F12-150 and -250. They can be found in
the service manual for F12. We also refer to after sales information, SI 09/01 and SI 09/04.
