SP20 SERIES SAE “A” FLANGE PUMP
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SP SERIES HYDRAULIC GEAR PUMP OUTSTANDING FEATURES • Patented Non-Symmetrical Gears The adoption of non-symmetrical gears insures greater power per unit volume compared with pumps of conventional design. The compact gear compartment has enabled high-pressure operation. The increased number of gear teeth has reduced the flow pulsation and minimized the noise. U.S.A. U.K. French German Patent No. Patent No. Patent No. Patent No. 3817117 1400577 7230448 7231801 • Double pumps: Available in SP20, SP25 and SP25/SP20 Combinations. • Maximum speed from 3000 to 4000 RPM using SAE 10W oil. • Displacement covers .400 in3/rev. to 3.869 in3/rev. • Inlet pressure: Pump inlet should not exceed 5 in. of mercury vacuum or 14 P.S.I. positive pressure. Others: Pending • Bearings PTFE composite bearings are used due to the ability to handle heavy loads, low shaft speeds, and high levels of contamination. Engineering tests on the PTFE bearings indicate they will withstand bearing loads over twice as high as conventional steel backed aluminum bearings used in many pumps. The PTFE resin layer will absorb a high degree of contamination with out damage to the pump. Also since the PTFE layer is self lubricating, contamination from bearing wear in high load situations (when no oil film is present) is reduced. The side benefit from reduced friction under all conditions is a reduced consumption of power. • Gears and drive shaft are hardened alloy steel of one piece construction. • Ports: SAE straight thread O-ring boss for SP20 & SP25. Other Ports available - consult factory. (Taper pipe threads not available. • Working oil: A mineral based oil with additives to resist corrosion, oxidation, and foaming is recommended. Viscosity at any running condition should be 60 SUS minimum and 250 SUS maximum. 180o F is the maximum recommended system operating temperature. • Filtration: Per ISO cleanliness code level 17/14. As a minimum, 10 micron filtration is recommended. INTERNAL COMPONENTS BREAKDOWN • Special gear design: Non-symmetrical gear insures low noise and compactness. • Highest Quality Workmanship. • Pressures Up To 3000 P.S.I. • Dependable service: Balanced pressure loading insures small dispersion, good durability and maintains high performance. • Extremely Efficient. • Perfect alignment: “Through bore” design provides perfect alignment of pump element and assures even bearing load. • With the aluminum alloy casing, the SP Series features light weight and easy handling. SP20 SERIES HYDRAULIC PUMPS AND NOISE GENERATION SP20 SERIES PUMP NOISE LEVELS 1800 RPM OPERATING SPEED 75 70 65 60 500 PSI 1500 PSI 2500 PSI 3000 PSI 55 (34 bar) (103 bar) (172 bar) (207 bar) 50 5 10 15 20 25 PUMP DISPLACEMENT cc/REV 30 35 PUMP SOUND PRESSURE RATING (PSPR) A-WEIGHTED SOUND PRESSURE LEVEL (SPL. dBA at lm) PUMP SOUND PRESSURE RATING (PSPR) A-WEIGHTED SOUND PRESSURE LEVEL (SPL. dBA at lm) Pumps tested below in the graphs were tested as defined by ANSI/B93.71M, (Hydraulic fluid power-Pumps-Test code for the determination of airborne noise levels) in a semi-anechoic room. For free-field conditions (i.e. such as a noise source located above the ground in a open area), pump sound pressure ratings (A-weight Sound Pressure Levels) may be estimated by subtracting 3dB(A)from the values shown on the graphs. SP20 SERIES PUMP NOISE LEVELS 3000 RPM OPERATING SPEED 85 80 75 70 65 500 PSI 1500 PSI 2500 PSI 3000 PSI 60 55 5 10 15 20 25 (34 bar) (103 bar) (172 bar) (207 bar) 30 35 PUMP DISPLACEMENT cc/REV Pump acoustical data was determined in accordance with ANSI/B93.71M. Hydraulic fluid power-Pumps-Test code for the determination of airborne noise levels CATP 9-09-04-01 PRINCE MANUFACTURING CORPORATION/WORLD HEADQUARTERS • P.O. BOX 7000 • NORTH SIOUX CITY, SOUTH DAKOTA 57049-7000 URL: www.princehyd.com • E-MAIL: prince@princehyd.com O.E.M. CUSTOMER SERVICE: (605) 235-1220 • FAX (712) 233-2181 DISTRIBUTOR CUSTOMER SERVICE: PHONE (605) 235-1220 • FAX (712) 233-2181 P9 PUMPS AND MOTORS The accompanying graphs show the typical Pump Sound Pressure Ratings (PSPR, A-weighted Sound Pressure Levels) for the SP20 Series Hydraulic Pumps. The Pump Sound Pressure Ratings (PSPR) shown below in the graphs were computed and determined using Sound Intensity Analysis Methods. Sound Intensity Analysis provides the most accurate and reliable data for predicting and comparing a Pump Sound Pressure Rating (Aweighted Sound Pressure Level), for a pump exposed to various operating and environmental conditions.

SP20 SERIES SAE "A" FLANGE PUMP • More Port Options • Contact your sales • More Shaft Options representative for • Lower Price more information The SP20B pump now utilizes self-lubricating thrust blocks that eliminate the need for separate wear plates. They are made from a high strength aluminum alloy with exceptional anti-galling properties. This new thrust block design also incorporates advanced bearings designed specifically for high pressure hydraulic pumps. This new bearing features a robust fluoropolymer PTFE wear surface that yields unsurpassed load carrying capabilities and...

SP25 SERIES SAE "B" FLANGE PUMP MODEL CODE DISPLACEMENT CODE (CC/REV) PORT LOCATION - A-SIDE INLET AND OUTLET D-REAR INLET AND OUTLET C-BOTH SIDE AND REAR INLET AND OUTLET, STEEL PLUGS E-BOTH SIDE AND REAR INLET AND OUTLET, PLASTIC PLUGS PORT TYPE - SHAFT SEAL TYPE OMIT FOR STANDARD BUNA-N H-MEDIUM PRESSURE BUNA-N ROTATION (FACING END OF SHAFT) L-COUNTER CLOCKWISE DRIVE SHAFT INLET PORT OUTLET PORT °Max. RPM for side ported models. Rear ported models should be restricted to 25 GPM due to limitation on the inlet port size. Standard Seal Kit for all SP25 Models is Prince Part No. PMCK-SP25....