PK SERIES PUMPS
INDUSTRY WORKHORSE, UNMATCHED EFFICIENCY, AND CONTROL.
Hydro-Gear’s commercial piston pumps are smooth and efficient. High-performing and maintenance-free, they feature fixed-displacement charge pumps and check or shock valves to provide an infinitely variable speed range between zero and full displacement in both forward and reverse modes of operation. With a wide range of options, find the perfect piston pump for your unique application.
- Return-to-neutral device for smooth de-stroke capability
- Most industry-standard shaft options for greater adaptability
- Tandem pumps for multi-circuits
- Auxiliary pumps to provide power to additional functions
- Cooling fan when additional cooling is desired
SPECIFICATIONS
DISPLACEMENT
- 73 in3/rev [12 cc/rev]
INPUT SPEED
- -MAX HI-IDLE [NO LOAD] – 3600 rpm
- -MIN [LOADED] – 1800 rpm
SYSTEM OPERATING PRESSURE
- CONTINUOUS – 1500 psi [103 bar]
- INTERMITTENT – 2100 psi [145 bar]
- PEAK – 3500 psi [240 bar]
PUMP PERFORMANCE
- @ 2400 RPM/ 1000 PSI – 7.1 gpm [26.8 I/min]
- @ 3000 RPM/ 1000 PSI – 8.9 gpm [33.6 I/min]
- @ 3600 RPM/ 1000 PSI – 10.8 gpm [40.8 I/min]
CONTROL TORQUE REQ’D TO STROKE PUMP
(-20° EXTERNAL STROKE ANGLE)
- LB-IN/1000 PSI [NM/70 BAR] – 85 lb-in [9.6 Nm]
- LB-IN/500 PSI [NM/35 BAR] – 60 lb-in [6.8 Nm]
PUMP OIL TEMPERATURE
- MAXIMUM INTERMITTENT – 230 F° [110 C°]
- NORMAL OPERATING RANGE: -10-200 F° [-23-93 C°]
FLUID VISCOSITY LIMITS @230 F° [110 C°]
- OPTIMUM – 70 SUS [13 Cst]
- MINIMUM – 55 SUS [9 Cst]
