Unit · AXIAL-PISTON PUMP
A4VG125DA2D2/31R-NAF02F021FR909442730
Axial piston pump Bosch Rexroth series A4VG, type code A4VG125DA2D2/31R-NAF02F021F, material number R909442730. Nominal size: NG 125. Axial piston unit: swashplate design, variable, nominal pressure 400 bar, maximum pressure 450 bar (A4V). Operating mode: pump, closed circuit (G). Control device: automatic control, speed related U = 24 V (DA2). Pressure cut-off: pressure cut-off (D). DA control valve: DA control valve, fixed setting (2). 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 DIN 5480 for combination pump – 1st pump (A). Mounting flange: SAE J744 2+4-hole (F). Working port (port plate): SAE working port A and B, top and bottom suction port S bottom (02). Boost pump: integrated boost pump with and without through drive (F). Through drive: flange SAE J744 Hub for splined shaft, 101-2 (B) 7/8 in 13T 16/32DP (02). High-pressure relief valve Setting range ∆pHD: high-pressure relief valve, pilot operated 100 … 420 bar with bypass (1). Filtration boost circuit/external boost pressure supply: attachment filter with cold start valve (F).
- Number
- R909442730
- Type code
- A4VG125DA2D2/31R-NAF02F021F
- Group
- A4VG 125
- Edition
- 02/2020
This parts list has no drawing.
| Pos. | Number | Name | Qty | Add to inquiry |
|---|---|---|---|---|
| 1 | R909437733 | ROTARY GROUP Assembly parts list →L | 1 | |
| 2 | R909442406 | CONTROL Assembly parts list →L | 1 | |
| 3 | R909438648 | CONNECTION PLATE Assembly parts list →L | 1 | |
| 4 | R909438365 | INTERNAL GEAR PUMP Assembly parts list →L | 1 | |
| 5 | R909437622 | DIRECTIONAL-CONTROL VALVE Assembly parts list →L | 1 | |
| 7 | R909438099 | CONTROL CARTRIDGE Assembly parts list →L | 1 | |
| 10 | R909436787 | HOUSING | 1 | |
| 12 | R909432369 | HOUSING COVER | 1 | |
| 13 | R909435017 | PIVOT PIN | 1 | |
| 15 | R902118633 | PIVOT PIN | 1 | |
| 20 | R909153861 | SCREW PLUGD | 2 | |
| 21 | R909153815 | SCREW PLUGD | 1 | |
| 22 | R909153816 | SCREW PLUGD | 3 | |
| 27 | R909831320 | DOUBLE BREAK-OFF PLUG | 1 | |
| 29 | R909830207 | O-RINGD | 1 | |
| 30 | R909157348 | QUAD RINGD | 1 | |
| 31 | R913016374 | SLOTTED SPRING PIN | 2 | |
| 32 | R909151692 | SCREW PLUGD | 3 | |
| 34 | R909083034 | SOCKET HEAD CAP SCREW | 8 | |
| 37 | R909156570 | SCREW PLUG | 1 | |
| 46 | R902035616 | ECCENTRIC SCREW | 1 | |
| 47 | R909087405 | SEALING NUTD | 1 | |
| 48 | R909151694 | SCREW PLUGD | 1 | |
| 49 | R909426707 | NOZZLE | 1 | |
| 54 | R909430054 | THROTTLE SCREW | 1 |
Parameters from the type code
| Item | Meaning | Code |
|---|---|---|
| Axial piston unit | Swashplate design, variable, nominal pressure 400 bar, maximum pressure 450 bar | A4V |
| Operating mode | Pump, closed circuit | G |
| Size (NG) | 125 | 125 |
| Control device | Automatic control, speed related U = 24 V | DA2 |
| Pressure cut-off | Pressure cut-off | D |
| DA control valve | DA control valve, fixed setting | 2 |
| 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 DIN 5480 for combination pump – 1st pump | A |
| Mounting flange | SAE J744 2+4-hole | F |
| Working port (port plate) | SAE working port A and B, top and bottom suction port S bottom | 02 |
| Boost pump | Integrated boost pump with and without through drive | F |
| Through drive | Flange SAE J744 Hub for splined shaft, 101-2 (B) 7/8 in 13T 16/32DP | 02 |
| High-pressure relief valve Setting range ∆pHD | High-pressure relief valve, pilot operated 100 … 420 bar with bypass | 1 |
| Filtration boost circuit/external boost pressure supply | Attachment filter with cold start valve | F |