عضویت 
ورود اعضا
راهنمای خرید
PFBAA or PFBAE Fixed Delivery Pumps0 pages
Oilgear
Towler
Pump, Fixed Delivery
(Separately Boosted)
PFBAA or PFBAE
ENGINEERING
General Information
The OilgearTowlerPFBA* series pump is a fixed displacement, seated valve, axial piston pump. The discharge
can be separated into double orcombined for single connections (see page 8). Thisdata sheet has information
aboutthe separately boosted version. Fordetails of the internally boosted PFBA* pumps, please refer
to data sheet 2P147. Only the internally boosted version is dimensionally interchangeable
with OilgearTowler A-series pumps. PFBAA pumps are designed for use on mineral oil and
similar viscosity fluids. PFBAE pumps are for use with low visocity fluids such as 95/5 HFAe.
Thispumpissuitableforboth directionsof rotation. All installation locations are specified as
viewed from the drive shaft end. The inletand discharge positions are independent of the
direction of rotation. The inlet must be separately boosted to a minimum pressure of 3 bar,
over case pressure. Maximum boost is 50 bar. The inletflowis nominally 6litres above the
discharge flow at 1500 rpm. These units are designed to run with a case full of fluid at all times
Thereforefill the case before starting and connectthedrain accordingly.
All dimensions given on thisdata sheetare in millimetres unlessotherwise stated. Further information on the PFBA* pump is
available. Consult OilgearTowler Operating and Maintenance Instructions booklet 1480. Alternatively contact Oilgear
Towlerdirect.
MAIN PRESSURE AND TORQUE CHARACTERISTICS | |||||
Pump | Maximum Working Pressure (bar) | Maximum Case Pressure (bar) | Maximum Input Torque (Nm) | Maximum Through Drive Torque (Nm) | Maximum ShaftSpeed (rpm) |
PFBAA | 1000 | 2 | 180 | 95 | 1800 |
PFBAE | 345 | 1 | 180 | 95 | 1500 |
Fordetails of single
discharge relief valves that
can be directly mounted on
the discharge face of this
pump, refer to data sheets
A23and A24. Forreliefand
unloading valvesthataHow
relief on a small section and
unload on a larger section,
referto data sheets A25 and
A26.
GENERAL CHARACTERISTICS | ||
TYPE | Fixed displacement, seated valve, axial piston pump. | |
FLUIDS&VISCOSITIES | Mineral Oil | ISO 6743/4 Type HM or HV. Visocity range is 5 to 1 OOcSt; with cold start is 200cSt. Maximum inlet temperature is 70°C. |
Fire resistant fluids | HFDR Phosphate Ester, rating asformineral oil. (NOTE: EPDM seals are required). | |
HFC Water Glycol. Pressure rating reduced to 275 bar. | ||
H FA High water based fluids (80/20), rating asfor 95/5 or H FC. | ||
For 95/5 or similar H FA fluids | HFAe pressures up to 345 bar. HFAs pressures up to 250bar. Visocity range is 0.5 to 1.5cSt. Maximum inlet temperature is 40° C | |
Aircraft Fluids | Mineral oil & "SkydroP at mineral oil rating. Above 350 bar consult OilgearTowler. (NOTE: EPDM seals are required for'Skydrol"). | |
Other Fluids (NOTE;ConsultOilgear Towler for details). | CastorOil ASTM960-79 100%duty. | |
Water&oil emulsion 60/40 HFB 240 bar maximum. | ||
Kerosene and diesel fluid 250 bar maximum. | ||
Bio-degradablefluids(vegetablessynthetic) HTG, HPG, HE. 100%duty, dependant on fluid limitations. | ||
FLUID CLEANLINESS | High pressure systems need cleaner fluids and the aim shou Id be to achieve ISO 4406 code 14/11 orcleaner. | |
OILGEAR TOWLER LTD
OaklandsRoad, Leeds, West Yorkshire, LSI 3 1 LG.
2P148 11/97
Tel 0113 2577721
Fax 0113 2559537
"
