Unit · AXIAL-PISTON PUMP
AA4VG56DA1DM8/32R-NTC52F005SQ-SR902239850
Axial piston pump Bosch Rexroth series A4VG, type code AA4VG56DA1DM8/32R-NTC52F005SQ-S, material number R902239850. Nominal size: NG 56. Axial piston unit: swashplate design, variable, nominal pressure 5800 psi (400 bar), maximum pressure 6500 psi (A4V). Operating mode: pump, closed circuit (G). Control device: automatic control, speed related U = 12 V (DA1). Pressure cut-off: pressure cut-off (D). Mechanical stroke limiter: mechanical stroke limiter, externally adjustable (M). DA control valve: DA control valve, fixed setting and hydraulic inch valve mounted, control with hydraulic fluid, mineral oil-based (8). Direction of rotation: viewed on drive shaft clockwise (R). Sealing material: NBR (nitrile rubber), shaft seal made of FKM (fluorocarbon rubber) (N). Drive shaft: splined shaft ANSI B92.1a for combination pump – 1st pump (T). Mounting flange: SAE J744 2-hole (C). Working port (port plate): SAE working port A and B, top and bottom suction port S bottom (52). Boost pump: integrated boost pump with and without through drive (F). Through drive: without through drive, only for version N and F (00). High-pressure relief valve Setting range ∆pHD: high-pressure relief valve 3600 to 6100 psi direct operated, fixed setting (250 to 420 bar) with bypass (5).
- Number
- R902239850
- Type code
- AA4VG56DA1DM8/32R-NTC52F005SQ-S
- Group
- A4VG 56
- Edition
- 12/2019
This parts list has no drawing.
| Pos. | Number | Name | Qty | Add to inquiry |
|---|---|---|---|---|
| 1 | R902006125 | ROTARY GROUP Assembly parts list →L | 1 | |
| 2 | R902017226 | CONTROL Assembly parts list →L | 1 | |
| 3 | R909609352 | CONNECTION PLATE Assembly parts list →L | 1 | |
| 4 | R909606383 | INTERNAL GEAR PUMP Assembly parts list →L | 1 | |
| 5 | R902087266 | INCHING VALVE Assembly parts list →L | 1 | |
| 7 | R902010130 | CONTROL CARTRIDGE Assembly parts list →L | 1 | |
| 10 | R902029575 | HOUSING | 1 | |
| 13 | R902132713 | PIVOT PIN | 1 | |
| 20 | R909154480 | SCREW PLUG | 1 | |
| 21 | R909153371 | SCREW PLUGD | 1 | |
| 22 | R909154478 | SCREW PLUGD | 4 | |
| 23 | R909153815 | SCREW PLUG | 3 | |
| 27 | R909831318 | DOUBLE BREAK-OFF PLUG | 2 | |
| 28 | R909156493 | NOZZLE | 2 | |
| 31 | R913016373 | SLOTTED SPRING PIN | 2 | |
| 32 | R909153364 | SCREW PLUGD | 1 | |
| 33 | R909153338 | SCREW PLUG | 1 | |
| 46 | R909435856 | ECCENTRIC SCREW | 1 | |
| 47 | R909153271 | SEALING NUTD | 1 | |
| 49 | R909156495 | NOZZLE | 1 | |
| 54 | R909156494 | NOZZLE | 1 | |
| 85 | R909447075 | CONTROL ELEMENT Assembly parts list →L | 1 | |
| 98 | R902095504 | SEAL KIT | 1 |
Parameters from the type code
| Item | Meaning | Code |
|---|---|---|
| Axial piston unit | Swashplate design, variable, nominal pressure 5800 psi (400 bar), maximum pressure 6500 psi | A4V |
| Operating mode | Pump, closed circuit | G |
| Size (NG) | 56 | 56 |
| Control device | Automatic control, speed related U = 12 V | DA1 |
| Pressure cut-off | Pressure cut-off | D |
| Mechanical stroke limiter | Mechanical stroke limiter, externally adjustable | M |
| DA control valve | DA control valve, fixed setting and hydraulic inch valve mounted, control with hydraulic fluid, mineral oil-based | 8 |
| Series | Series 3, index 2 | 32 |
| Direction of rotation | Viewed on drive shaft clockwise | R |
| Sealing material | NBR (nitrile rubber), shaft seal made of FKM (fluorocarbon rubber) | N |
| Drive shaft | Splined shaft ANSI B92.1a for combination pump – 1st pump | T |
| Mounting flange | SAE J744 2-hole | C |
| Working port (port plate) | SAE working port A and B, top and bottom suction port S bottom | 52 |
| Boost pump | Integrated boost pump with and without through drive | F |
| Through drive | Without through drive, only for version N and F | 00 |
| High-pressure relief valve Setting range ∆pHD | High-pressure relief valve 3600 to 6100 psi direct operated, fixed setting (250 to 420 bar) with bypass | 5 |
| Filtration boost circuit/external boost pressure supply | Filtration in the boost pump suction line | S |
| Connector for solenoids | DEUTSCH connector molded, 2-pin with suppressor diode (only for EZ and DA) | Q |
| Standard/special version | Special version | -S |