Catalogue Fixed Displacement Checkball Hydraulic Pumps
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USING THISBROCHURE
This brochure contains specifications for the most commonly used checkball pumps. Contact the sales department for availability of models with features and operating requirements not shown here.
Refer to page 28 for general fluid guidelines and information on ports. Request Bulletin PSI.CB (dynexpumprecommendations.pdf) for checkball pump installation and operating recommendations.
TableofContents
Pump Type and Series Page Fixed Displacement Pumps 2
PF500 Series (S.A.E. A-A 2-bolt).................................... 3
PF1000 Series (S.A.E. A 2-bolt) ..................................... 6
PF2000 Series (S.A.E. B 2-bolt) .....................................
PF2000 Series (Special Mounting)
9 11 13 16 19 22 25 28
PF3000 Series (S.A.E. C 4-bolt) .....................................
PF4000 Series (S.A.E. D 4-bolt)
PF4200 Series (S.A.E. D 4-bolt)
PF4300 Series (S.A.E. D 4-bolt)
PF6000 Series (S.A.E. E 4-bolt) .....................................
Fluid Guidelines and Outlet Port Configurations........................
'inlet CHECKBALL
AUTLET 1
HOWTHEPUMPSOPERATE
The checkball pump design uses two industrial check valves in each piston pumping chamber to direct flow from the inlet side of the pump to the pump outlet port.
Wobble Plate Rotateswith Shaft
During operation, a fixed angle wobble plate rotates with the drive shaft. The angled surface of the wobble plate imparts a reciprocating motion to the pistons which move in and out of the bores in the stationary barrel.
During its suction stroke, each piston is filled through its inlet check valve. Fluid is drawn by vacuum into the piston pumping chamber in the barrel.
Check ValvesControl Fluid
During compression, the inlet check valve closes and pressure in the pumping chamber rises until it exceeds load pressure at the outlet port.
The outlet checkball then lifts off its seat and fluid is pumped
ROTATING v f WOBBLE PLATE \ J
DRIVE, SHAFTS
OUTLET CHECKBALL
SPLIT-FLOW
COVER
DESIGN
STATIONARY PISTON BARREL
OUTLET 2
Multiple Outlet Pumps
In Split-Flow® models, the piston outputs can be isolated, or grouped together in various combinations, supplying flows to multiple function circuits without flow dividers.
across the check valve, out of the pumping chamber. Piston outputs are combined in the pump barrel or cover, and then discharged from the pump outlet providing smooth flow to the system.
2
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Contents table
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pdf-page pdf di En 2008-12-49-02