The Original Hydreco AP40 Piston Pump:
One of the first piston pumps ever made.

AP40 Competitive Advantages

  • “B” or “C” Mount Available
  • Rear, Side, and Thru Drive Ports
  • Field-proven,Years of Service
  • Dependability
  • Short Lead Times Any Config.
  • Split-flange or straight-thread ports
  • Splined or keyed shafts
  • Aluminum housings
  • Multiple Control Configurations
  • Torque Controls Available


Specifications
Max Rated Speed3000 RPM Filtration Recommendation 
Max Operating Pressure3500 PSI  Beta 12 Greater Than or Equal To200
Max Displacement4.0 CIR  Fluid Cleanliness ISO Code16/14/12
Approximate Weight50 lbs Operating Viscosity Limits 
Max Operating Temperature180° F  Max @ Start Up5000 SUS
Max Case Pressure25 PSI  Max Continuous1000 SUS
Thru Drive OptionsSAE A & B  Min Continuous60 SUS
Mounting FlangeSAE B or C  Min Intermittent50 SUS
Input Horsepower  Inlet Pressure Requirements5 in Hg
  1800 RPM 3500 PSI68 HP  to 20 PSI
AP40 SERIES PISTON PUMP MODEL NUMBERS
AP40B1B1A2R20
TypeModelSeriesShaftsAdapterConstructionControlsCoversRotationComp setting

Type
AP  Atmospheric Inlet Axial Piston Pump
Model
40  4.0 cir25  2.5 cir
353.5 cir232.3 cir
303.0 cir202.0 cir
272.7 cir
Series
B  Standard design
Shafts
1  SAE ‘B’ Spline (use only with ‘B’ adapter) PxD=11,000
2  SAE ‘C’ Spline (use only with ‘C’ adapter) PxD=29,400
3  SAE ‘C’ Keyed (use only with ‘C’ adapter) PxD=29,400
4  SAE ‘BB’ Spline (use only with ‘B’ adapter) PxD=15,000
Shafts with rear drives
5  SAE ‘C’ Spline (use with #3 cover and ‘C’ adapter)
6  SAE ‘C’ Keyed (use with #3 cover and ‘C’ adapter)
7  SAE ‘BB’ Spline (use with #3 cover and ‘B’ adapter)
8  SAE ‘B’ Spline (use with #3 cover and ‘B’ adapter)
17  SAE ‘C’ Spline with SAE ‘B’ spline rear drive (use with #7 cover and ‘C’ adapter)
18  SAE ‘C’ Spline with SAE ‘BB’ spline rear drive (use with #7 cover and ‘C’ adapter)
19  SAE ‘C’ Keyed with SAE ‘B’ spline rear drive (use with #7 cover and ‘C’ adapter)
20  SAE ‘C’ Keyed with SAE ‘BB’ spline rear drive (use with #7 cover and ‘C’ adapter)
21  SAE ‘B’ Spline with SAE ‘B’ spline rear drive (use with #7 cover and ‘B’ adapter)
Adapter
B  SAE ‘B’ two bolt mount
C  SAE ‘C’ two and four bolt mount combo
Construction
1  Long differential cutoff
4  Short differential cutoff
5  Torque limiter
Controls
A  Pressure compensator
B  Dual pressure compensator
C  Load sense 170 psi min standby
D  Remote load sense 170 psi min standby
CA  Load sense 350 psi min standby
DA  Remote load sense adjustable standby
M  Load sense adjustable standby
T  Torque limiter with adjustable standby
W  Torque limiter with pressure compensator
P  Pressure compensator w/electric 12 vdc unloader
CB  Load sense w/electric 12 vdc loader
CC  Load sense w/electric 24 vdc loader
PA  Pressure compensator w/electric 12 vdc loader
PB  Pressure compensator w/electric 24 vdc loader
 
CAYAdjustable Press Comp. & Adj. Load Sense
CAXAdjustable Press Comp. & Adj. Load Sense (w/Internal Bleed)
*Many More *Please Call
Covers
1  Same as #3 with max. volume stop adjustment. Rear SAE ‘A’ thru drive not available
2  Rear port-Inlet SAE 1 1/2″ tube port 1 7/8-12UN-2B(#24). Outlet-SAE 1″ tube port 1 5/16-12UN-2B(#16)
3  Side port -Inlet SAE 1 1/2″ flange SAE J518C code 61. Outlet SAE 1″ flange SAE J518C code 61
6  Same as #2 with max/min volume stop adjustment. Rear SAE ‘A’ thru drive not available
7  Same as #3 except with rear SAE ‘B’ drive.
10  Rear port-Inlet SAE 1 1/2″ flange SAE J518C code 61. Outlet SAE 1″ flange SAE J518C code 61.
13  Same as #10 with max/min volume stop adjustment. Rear SAE ‘A’ thru drive not available
Notes:

When no setting is specified on order, the compensator will be set at 2500 psi.

*For additional options and controls consult the factory.