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Description
- Platform F
- Low noise fixed pump
- Size 12 … 28
- Continuous pressure up to 250 bar
- Intermittent pressure up to 280 bar
Features
- Optimized pressure pulsation, reduces noise emissions and oscillations in the system
- Pleasant pitch due to low frequency
- Consistent high quality based on large-volume production
- Long service life
- Slide bearings for high loads
- Drive shafts according to ISO or SAE and customer-specific solutions
- Line ports: connection flange or screw thread
- Combination of several pumps possible
Product description
General information
It is the central task of external gear pumps to convert mechanical energy (torque and speed) into hydraulic energy (flow and pressure). To reduce heat losses, Rexroth’s external gear units offer very high efficiencies. They are realized by pressure-dependent gap sealing and highly precise production technology.
Rexroth external gear pumps are built in four frame sizes: Platform B, F, N and G. Within each platform different sizes can be realized by different gear widths. The pumps are available in the versions Standard, High-Performance, SILENCE und SILENCE PLUS. Further configuration variants are given by different flanges, shafts, valve arrangements and multiple pump combinations.
With extremely low-noise SILENCE PLUS pumps, the intrinsic noise is reduced by 15 dB (A) on average as compared with standard external gear pumps and the flow pulsation is also decreased by 75%.
Pumping principle
Continuous tooth contact reduces operating noise:
A non-involute rounded tooth profile, combined with helical gearing, forms the heart of the SILENCE PLUS. Thanks to permanent tooth contact, the hydraulic fluid is transported almost continuously and noiselessly. The possibility of noise developing from trapped oil between the tooth flanks is prevented in the first place.
A hydrostatic bearing ensures long service life: The high performance and long service life of the SILENCE PLUS is due to a Rexroth patented solution: Hydrostatic grooves provide wear-free compensation for the internal axial forces generated in the helical gearing – even at pressures up to 280 bar.
Standard
SILENCE PLUS
Flow pulsation
Design version
The external gear pump consists essentially of a pair of gear wheels supported in bearing bushings and the housing with a front cover and an end cover.
The drive shaft protrudes from the front cover where it is usually sealed by the shaft seal. The bearing forces are absorbed by slide bearings. These bearings were designed for high pressures and have excellent emergency running properties, especially at low rotational speeds. The gear wheels have 7 teeth. This keeps both flow pulsation and noise emission to a minimum. The sealing of the pressure chambers is achieved by forces depending on the working pressure. This ensures optimum efficiency. The working pressure generated in the gear chambers is transferred to the outside of the bearing bushings in specifically designed pressure fields in such a way that they are pressed against the gears and seal them up. The pressurized compression areas are limited by special seals. The seal in the area between the gear teeth and the housing is ensured by the smallest of gaps that are set depending on the pressure between the gear teeth and housing.
Hydrostatic bearing SILENCE PLUS
Axial compensation SILENCE PLUS
Assembly AZPJ
| 1 | Retaining ring | 8 | Housing seal ring |
| 2 | Shaft seal | 9 | Pump housing |
| 3 | Front cover | 10 | Bearing bushing |
| 4 | Slide bearings | 11 | Axial field seal |
| 5 | Centering pin | 12 | Supporting element |
| 6 | Gear wheel | 13 | Rear cover |
| 7 | Drive shaft | 14 | Torx screws |
Gear pumps with integrated valves
In order to reduce piping complexity, a flow control valve or pressure-relief valve can be integrated in the cover of the gear pump. Such solutions are used, for instance, for the hydraulic oil supply of power steering systems. The pump delivers a constant flow or maximum
pressure irrespective of the rotational speed. The residual flow distributed externally to other consumers.
Pressure relief valve, external pressure discharge
p1 = 5 to 250 bar
3-way flow control valve, residual flow distributed externally, loadable
qconst = 2 to 30 l/min
Type code
Type code single pump
| 1) | Corrosion-protected version, details see "Technical data“ |
Note
- Not all of the variants according to the type code are possible.
- Please select the desired pump with the help of the selection table (preferred types ) or after consultation with Bosch Rexroth.
- Special options are available on request.
Type code multiple pump
| 1) | A letter is to be selected for each pump stage, e.g. 3-way pump AZPJ + AZPJ + AZPB: JJB |
| 2) | A numerical value is to be selected for each pump stage, e.g.3-way pump 028/016/2.0 |
| 3) | A numerical value is to be selected for each pump stage, e.g.3-way pump 202020 |
Note
- Not all of the variants according to the type code are possible.
- Please select the desired pump with the help of the selection table (preferred types ) or after consultation with Bosch Rexroth.
- Special options are available on request.
Example 4-way pump:
AZPG…032… + AZPG…022… + AZPJ…016… + AZPJ…012…
Technical data
Table of values
| Size | 12 | 14 | 16 | 19 | 22 | 25 | 28 | ||||
| Series | Series 2x | ||||||||||
| Displacement | Vg | cm³ | 12 | 14 | 16 | 19 | 22.5 | 25 | 28 | ||
| Pressure at suction port S 1) | absolute | pe | bar | 0.7 ... 3 | |||||||
| Maximum continuous pressure | p1 | bar | 250 | 250 | 250 | 250 | 210 | 185 | 130 | ||
| Maximum intermittent pressure | p2 | bar | 280 | 280 | 280 | 280 | 240 | 215 | 160 | ||
| Maximum pressure peaks | p3 | bar | 300 | 300 | 300 | 300 | 260 | 235 | 180 | ||
| Minimum speed at | ν = 12 mm²/s | p < 100 bar | nmin | rpm | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| p = 100 bar … 180 bar | nmin | rpm | 1000 | 800 | 800 | 800 | 800 | 800 | 800 | ||
| p = 180 bar … p2 | nmin | rpm | 1200 | 1000 | 1000 | 1000 | 1000 | 1000 | - | ||
| ν = 25 mm²/s | at p2 | nmin | rpm | 600 | 500 | 500 | 500 | 500 | 500 | 500 | |
| Maximum speed | at p2 | nmax | rpm | 3500 | 3000 | 3000 | 3000 | 3000 | 2800 | 2600 | |
| 1) | In the case of tandem pumps, the suction-side pressure difference between the individual pump stages must not exceed 0.5 bar. |
General technical data
| Weight | m | kg | See chapter Dimensions |
| Installation position | No restrictions | ||
| Mounting type | Flange or through-bolting with spigot | ||
| Line connections | See chapter Dimensions | ||
| Direction of rotation, viewed on drive shaft | Clockwise or counter-clockwise, the pump may only be driven in the direction indicated | ||
| Drive shaft loading | Axial and radial forces only after consultation | ||
| Ambient temperature range | t | °C | -30 to +80 with NBR seals (NBR = nitrile rubber) |
| -20 to +110 with FKM seals (FKM = fluoroelastomer) | |||
Corrosion protection
| Version 1 (phosphated): | The surface serves for protection against flash rust during transport or as priming for painting. | |
| Version 2 (galvanized, passivated): | Degree of corrosion and rust according to DIN EN ISO 9227 | Test duration 96 h: no red rust |
Note
- Safety requirements pertaining to the whole systems are to be observed.
- Please contact us for applications with frequent load changes.
Pressure definition
| p1: Continuous pressure max. | |
| p2: Intermittent pressure max. | |
| p3: Pressure peaks max. |
| Determining the operating characteristics | ||
| Flow |  | [l/min] |
| Torque |  | [Nm] |
| Power |  | [kW] |
| Key | |
| Vg | Displacement per revolution [cm3] |
| Δp | Differential pressure [bar] |
| n | Rotational speed [rpm] |
| ηv | Volumetric efficiency |
| ηhm | Hydraulic-mechanical efficiency |
| ηt | Total efficiency (ηt = ηv • ηhm) |
Note
You can find diagrams for a rough calculation in chapter "Diagrams / Characteristic curves".
Hydraulic fluids
The external gear unit is designed for operation with HLP mineral oil according to DIN 51524, 1-3. Under higher load, however, Bosch Rexroth recommends at least HLP compliant with DIN 51524 Part 2.
See the following data sheet for application instructions and requirements for selecting hydraulic fluid, behavior during operation as well as disposal and environmental protection before you begin project planning:
- 90220: Hydraulic fluids based on mineral oils and related hydrocarbons
Other hydraulic fluids on request.
Selection of hydraulic fluid
Bosch Rexroth evaluates hydraulic fluids on the basis of the Fluid Rating according to the technical data sheet 90235.
Hydraulic fluids with positive evaluation in the Fluid Rating are provided in the following technical data sheet:
- 90245: Bosch Rexroth Fluid Rating List for Rexroth hydraulic components (pumps and motors)
The hydraulic fluid should be selected so that the operating viscosity in the operating temperature range is within the optimum range (νopt; see selection diagram).
Viscosity and temperature of hydraulic fluids
| Viscosity range | |
| Permissible in continuous operation | ν = 12 … 800 mm²/s |
| Recommended in continuous operation | νopt = 20 … 100 mm²/s |
| Permissible for cold start | νmax ≤ 2000 mm²/s |
| Temperature range | |
| With NBR seals (NBR = nitrile rubber) | t = -30 °C … +80 °C |
| With FKM seals (FKM = fluoroelastomer) | t = -20 °C … +110 °C |
Observe the instructions for the filtration of the hydraulic fluid (see chapter Project planning information).
Direction of rotation
The dimensional drawings in the chapter Dimensions represent pumps for clockwise rotation. The position of the drive shaft or the position of suction and pressure port changes for counter-clockwise rotation.
Direction of rotation, viewed on drive shaft
Drives
1. Elastic couplings
- The coupling must not transfer any radial and axial forces onto the pump.
- The maximum admissible radial run-out deviation from the shaft to the fitting slot is 0.2 mm.
- Admissible shaft shifting see installation information of the coupling manufacturers.
2. Coupling sleeve
- To be used on splined shaft profile according to DIN and SAE.
- Attention: No radial or axial forces are permitted on the pump shaft or coupling sleeve. The coupling sleeve must be free to move axially.
- The distance between the pump drive shaft and drive shaft on the customer side must 2+1 mm.
- Provide installation space for the snap ring.
- Oil-bath or oil-mist lubrication is required.
3. Tang drive coupling
- For attaching the pump directly to an electric motor or combustion engine, gear, etc.
- The pump shaft has a special tang drive and driver (3) (scope of delivery see offer drawing)
- There is no shaft sealing
- Drive-side installation and sealing according to the following recommendations and dimensions
- Drive shaft on the customer side (1)
- Case-hardening steel DIN EN 10084 e.g. 20MnCrS5 case-hardened 0.6 mm deep; HRC 60±3
- Seal ring running surface ground without rifling Rt ≤ 4 μm
- Radial shaft seals on the customer side (2)
- Provide with rubber cover (see DIN 3760, type AS or double-lipped ring)
- Provide installation edge with 15° slant or install shaft seal with protection sleeve
Sizes 12 … 16
Sizes 19 … 28
| 1) | See offer drawing (maximum 34 mm) |
4. V-belts and straight gear wheels or helical toothed gear drives without outrigger bearing
For V-belt or gear wheel drives, please contact us specifying the application and mounting conditions (dimensions a, dm, dw and angle α). For helical toothed gear drives, details of the helix angle β are also required.
5. Outrigger bearing
Outrigger bearing are offered to eliminate possible problems when the pumps are driven by V-belts or gear wheels. The diagrams show the radial and axial load capacity in relation to a bearing service life of LH = 1000 h.
Front cover A (type 1)
Front cover G (type 2)
Maximum transferable drive torques
Splined shafts
| Drive shaft | Mmax | Size | p2 max | |
| Code | Designation | Nm | bar | |
| F | DIN 5482 B17 × 14 | 100 | 12 … 19 | 280 |
| 22 | 240 | |||
| 25 | 215 | |||
| 28 | 160 | |||
| R | SAE J744 16-4 9T | 110 | 12 … 19 | 280 |
| 22 | 240 | |||
| 25 | 215 | |||
| 28 | 160 | |||
| P | SAE J744 19-4 11T | 180 | 12 … 19 | 280 |
| 22 | 240 | |||
| 25 | 215 | |||
| 28 | 160 | |||
Tapered shafts
| Drive shaft | Mmax | Size | p2 max | |
| Code | Type | Nm | bar | |
| C | 1 : 5 | 155 | 12 … 19 | 280 |
| 22 | 240 | |||
| 25 | 215 | |||
| 28 | 160 | |||
| H | 1 : 8 | 160 | 12 … 19 | 280 |
| 22 | 240 | |||
| 25 | 215 | |||
| 28 | 160 | |||
Parallel keyed shafts
| Drive shaft | Mmax | Size | p2 max | |
| Code | Designation | Nm | bar | |
| Q | SAE J744 16-1 A | 55 | 12 | 250 |
| 14 | 220 | |||
| 16 | 190 | |||
| 19 | 160 | |||
| 22 | 140 | |||
| 25 | 120 | |||
| 28 | 110 | |||
| A | ISO ⌀18 mm | 75 | 12, 14 | 280 |
| 16 | 260 | |||
| 19 | 220 | |||
| 22 | 190 | |||
| 25 | 170 | |||
| 28 | 150 | |||
Tang drive
| Drive shaft | Mmax | Size | p2 max | |
| Code | Designation | Nm | bar | |
| N | Tang drive | 65 | 12 | 280 |
| 14 | 260 | |||
| 16 | 230 | |||
| 85 | 19 | 250 | ||
| 22 | 210 | |||
| 25 | 190 | |||
| 28 | 160 | |||
With outrigger bearing
| Drive shaft | Outrigger bearing | Mmax | Size | p2 max |
| Code | Type (code) | Nm | bar | |
| S | Type 1 (A) (with tang drive coupling) | 65 | 12 | 280 |
| 14 | 260 | |||
| 16 | 230 | |||
| 19 | 190 | |||
| 22 | 160 | |||
| 25 | 140 | |||
| 28 | 130 | |||
| Type 1 (A) (with sleeve) | 160 | 12 … 19 | 280 | |
| 22 | 240 | |||
| 25 | 215 | |||
| 28 | 160 | |||
| Type 2 (G) | 12 … 19 | 280 | ||
| 22 | 240 | |||
| 25 | 215 | |||
| 28 | 160 |
Multiple gear pumps
Gear pumps are well-suited to multiple arrangements, whereby the drive shaft of the first pump stage is extended to a second and possibly third pump stage. The shaft of the individual pump sections are normally connected via a driver or via a splined coupling (reinforced
through drive).
The individual pump stages are usually hydraulically isolated and have separate suction ports. On request a common suction port or separated but hydraulically connected suction ports are available.
For the configuration of multiple pumps, Bosch Rexroth recommends arranging the pump stage with the largest displacement on the drive side.
Note
Basically, the parameters of the single pumps apply, however certain restrictions need to be observed:
- Maximum rotational speed: This is determined by the largest pump stage used.
- Pressures: These are restricted by the maximum transmissible torques of the drive shaft, the through drive and the driver.
Addition of drive torques
Please note, that in multiple pump arrangements the drive torques of the single pumps stages will add up according to the following formula:
| 1) | Mmax: see table above "Maximum transferable drive torques" |
This may result in pressure restrictions for the respective pump stages.
Standard through drive (tang drive coupling)
In the case of AZPJ pumps the driver for the following pump stage can carry a load of up to Mmax = 65 Nm.
Please note possibly resulting pressure restrictions for the following pump stages. Subsequent pumps of a smaller series determine the max. transmissible torque.
| Following pump | Mmax [Nm] | |
| Platform F | AZPF-1x | 65 |
| AZPF-2x | 85 | |
| AZPS-1x | 65 | |
| AZPS-2x | 85 | |
| AZPJ | 65 | |
| Platform B | AZPB-3x | 25 |
Reinforced through drives
For applications with higher transfer torques or torsional vibrations reinforced through drives up to Mmax = 160 Nm are available. Lay out design on request.
Diagrams/characteristic curves
Flow characteristic curves
Note
- Characteristic curves measured at ν = 32 mm²/s and t = 50 °C.
Power diagrams
Size 12
Size 14
Size 16
Size 19
Size 22
Size 25
Size 28
Noise charts
Apart from the low levels, the much lower frequency also contributes to the substantial noise benefits of the SILENCE PLUS compared with other pump designs.
Noise levels dependent on the rotational speed, pressure range between 10 bar and pressure value p2 (see chapter "Technical data").
These are typical characteristic values for the respective size. They describe the airborne sound emitted solely by the pump.
Ambient influences (installation site, piping, other system components) were not taken into account.
The values refer to one individual pump.
Note
- Characteristic curves measured at ν = 32 mm²/s and t = 50 °C.
- Sound pressure level calculated from noise measurements made in the low reflection measuring room according to DIN 45635, Part 26.
- Distance from measuring sensor to pump: 1 m.
Size 12
Size 14
Size 16
Size 19
Size 22
Size 25
Size 28
Dimensions
Drive shafts
Tapered shaft 1:5
(for front cover B, P, N)
| 1) | In combination with front cover B |
| 2) | In combination with front cover P and front cover N |
Tapered shaft 1:5
(for outrigger bearing A, G)
Tapered shaft 1:8
Splined shaft (SAE J744 16-4 9T)
Splined shaft (SAE J744 19-4 11T)
Splined shaft (DIN 5482 B17 x 14)
| 1) | In combination with front cover B |
| 2) | In combination with front cover P and front cover N |
Tang drive
Parallel keyed shaft (SAE J744 16-1 A)
Parallel keyed shaft (ISO ⌀18 mm)
Front cover
Rectangular flange ⌀80 mm
Rectangular flange ⌀36.47mm
2-bolt flange ⌀82.55 mm, SAE J744 82-2 (A)
2-bolt flange ⌀101.6mm, SAE J744 101-2 (B)
2-bolt mounting ⌀52mm, with O-ring
4-bolt mounting ⌀52 mm, with O-ring
2-bolt mounting ⌀50mm, connection variant 1
2-bolt mounting ⌀50 mm, connection variant 2
Outrigger bearing ⌀80 mm, type 1
Outrigger bearing ⌀80 mm, type 2
Line connections
Square flange
| NG | Pressure side | Suction side | ||||
| C | D | E | C | D | E | |
| mm | mm | mm | mm | |||
| 12 … 16 | 15 | 35 | M6; 13 mm deep | 20 | 40 | M6; 13 mm deep |
| 19 | 22 | 55 | ||||
| 22 … 28 | 26 | M8; 13 mm deep | ||||
Square flange
| NG | Pressure side | Suction side | ||||
| C | D | E | C | D | E | |
| mm | mm | mm | mm | |||
| 12 … 16 | 13.5 | 30.2 | M6; 13 mm deep | 20 | 39.7 | M8; 13 mm deep |
UN-thread according to ISO 11926-1 / ASME B 1.1, O-ring
| NG | Pressure side | Suction side | ||||||
| P | D | E | F | S | D | E | F | |
| mm | mm | mm | mm | mm | mm | |||
| 12 … 16 | 7/8-14 UNF-2B | 35 | 0.5 | 16 | 1 1/16-12 UN-2B | 45 | 0.5 | 19 |
| 19 … 22 | 7/8-14 UNF-2B | 35 | 16 | |||||
| 25 … 28 | 1 1/16-12 UN-2B | 45 | 19 | |||||
Preferred program
Tapered shaft 1:5 with rectangular flange ⌀80 mm
AZPJ–22– … CB20MB
| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | |||||
| Direction of rotation | p2 | nmax | m | A | B | C | D | E | ||
| counter-clockwise | clockwise | bar | rpm | kg | mm | mm | mm | mm | ||
| 12 | 0 518 525 302 | 0 518 525 001 | 280 | 3500 | 3.9 | 46.5 | 96.3 | 20 | 40 | M6; 13 mm deep |
| 14 | 0 518 525 303 | 0 518 525 002 | 280 | 3000 | 4 | 47.5 | 99.5 | 20 | 40 | |
| 16 | 0 518 625 301 | 0 518 625 001 | 280 | 3000 | 4.1 | 47.5 | 102.9 | 20 | 40 | |
| 19 | 0 518 625 309 | 0 518 625 010 | 280 | 3000 | 4.5 | 57.9 | 107.9 | 22 | 55 | M8; 13 mm deep |
| 22 | 0 518 725 310 | 0 518 725 011 | 240 | 3000 | 4.6 | 60.6 | 113.3 | 26 | 55 | |
| 25 | 0 518 725 311 | 0 518 725 012 | 215 | 2800 | 4.8 | 64.8 | 117.5 | 26 | 55 | |
| 28 | 0 518 725 312 | 0 518 725 013 | 160 | 2600 | 4.9 | 69.6 | 122.3 | 26 | 55 | |
Splined shaft (SAE J744 16-4 9T) with 2-bolt flange ⌀82.55 mm, SAE J744 82-2 (A)
AZPJ–22– … RR20MB
| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | |||||
| Direction of rotation | p2 | nmax | m | A | B | C | D | E | ||
| counter-clockwise | clockwise | bar | rpm | kg | mm | mm | mm | mm | ||
| 12 | 0 518 525 306 | 0 518 525 005 | 280 | 3500 | 3.8 | 46.5 | 96.3 | 20 | 40 | M6; 13 mm deep |
| 14 | 0 518 525 307 | 0 518 525 006 | 280 | 3000 | 3.9 | 47.5 | 99.5 | 20 | 40 | |
| 16 | 0 518 625 303 | 0 518 625 003 | 280 | 3000 | 4 | 47.5 | 102.9 | 20 | 40 | |
| 19 | 0 518 625 306 | 0 518 625 007 | 280 | 3000 | 4.4 | 57.9 | 107.9 | 22 | 55 | M8; 13 mm deep |
| 22 | 0 518 725 301 | 0 518 725 002 | 240 | 3000 | 4.6 | 60.6 | 113.3 | 26 | 55 | |
| 25 | 0 518 725 302 | 0 518 725 003 | 215 | 2800 | 4.7 | 64.8 | 117.5 | 26 | 55 | |
| 28 | 0 518 725 303 | 0 518 725 004 | 160 | 2600 | 4.8 | 69.6 | 122.3 | 26 | 55 | |
Tapered shaft 1:8 with rectangular flange ⌀36.47 mm
AZPJ–22– … HO30MB
| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | ||
| Direction of rotation | p2 | nmax | m | A | B | ||
| counter-clockwise | clockwise | bar | rpm | kg | mm | mm | |
| 12 | 0 518 525 308 | 0 518 525 007 | 280 | 3500 | 3.7 | 48 | 97.8 |
| 14 | 0 518 525 309 | 0 518 525 008 | 280 | 3000 | 2.8 | 49 | 101 |
| 16 | 0 518 625 304 | 0 518 625 004 | 280 | 3000 | 3.9 | 49 | 104.4 |
Tapered shaft 1:8 with rectangular flange ⌀36.47 mm
AZPJ–22– … HO20MB
| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | |||||
| Direction of rotation | p2 | nmax | m | A | B | C | D | E | ||
| counter-clockwise | clockwise | bar | rpm | kg | mm | mm | mm | mm | ||
| 19 | 0 518 625 307 | 0 518 625 008 | 280 | 3000 | 4.5 | 59.4 | 109.4 | 22 | 55 | M8; 13 mm deep |
| 22 | 0 518 725 304 | 0 518 725 005 | 240 | 3000 | 4.6 | 62.1 | 114.8 | 26 | 55 | |
| 25 | 0 518 725 305 | 0 518 725 006 | 215 | 2800 | 4.8 | 66.3 | 119 | 26 | 55 | |
| 28 | 0 518 725 306 | 0 518 725 007 | 160 | 2600 | 4.9 | 71.1 | 123.8 | 26 | 55 | |
Parallel keyed shaft (ISO ⌀18) with rectangular flange ⌀80 mm
AZPJ–22– … AB20MB
| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | |||||
| Direction of rotation | p2 | nmax | m | A | B | C | D | E | ||
| counter-clockwise | clockwise | bar | rpm | kg | mm | mm | mm | mm | ||
| 12 | 0 518 525 304 | 0 518 525 003 | 280 | 3500 | 3.9 | 46.5 | 96.3 | 20 | 40 | M6; 13 mm deep |
| 14 | 0 518 525 305 | 0 518 525 004 | 280 | 3000 | 4 | 47.5 | 99.5 | 20 | 40 | |
| 16 | 0 518 625 302 | 0 518 625 002 | 270 | 3000 | 4.1 | 47.5 | 102.9 | 20 | 40 | |
| 19 | 0 518 625 308 | 0 518 625 009 | 230 | 3000 | 4.5 | 57.9 | 107.9 | 22 | 55 | M8; 13 mm deep |
| 22 | 0 518 725 307 | 0 518 725 008 | 190 | 3000 | 4.6 | 60.6 | 113.3 | 26 | 55 | |
| 25 | 0 518 725 308 | 0 518 725 009 | 170 | 2800 | 4.8 | 64.8 | 117.5 | 26 | 55 | |
| 28 | 0 518 725 309 | 0 518 725 010 | 150 | 2600 | 4.9 | 69.6 | 122.3 | 26 | 55 | |
Tang drive with 4-bolt mounting ⌀52 mm
AZPJ–22– … NT20MB
| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | |||||
| Direction of rotation | p2 | nmax | m | A | B | C | D | E | ||
| counter-clockwise | clockwise | bar | rpm | kg | mm | mm | mm | mm | ||
| 12 | 0 518 515 301 | 0 518 515 001 | 280 | 3500 | 2.5 | 44 | 87.1 | 20 | 40 | M6; 13 mm deep |
| 14 | 0 518 515 302 | 0 518 515 002 | 280 | 3000 | 2.6 | 45 | 90.3 | 20 | 40 | |
| 16 | 0 518 615 301 | 0 518 615 001 | 280 | 3000 | 2.7 | 45 | 93.7 | 20 | 40 | |
| 19 | 0 518 615 303 | 0 518 615 003 | 250 | 3000 | 3 | 55.4 | 98.7 | 22 | 55 | M8; 13 mm deep |
| 22 | 0 518 715 301 | 0 518 715 001 | 215 | 3000 | 3.2 | 58.1 | 104.1 | 26 | 55 | |
| 25 | 0 518 715 302 | 0 518 715 002 | 190 | 2800 | 3.3 | 62.3 | 108.3 | 26 | 55 | |
| 28 | 0 518 715 303 | 0 518 715 003 | 160 | 2600 | 3.4 | 67.1 | 113.1 | 26 | 55 | |
Project planning information
Technical data
All mentioned technical data are dependent on manufacturing tolerances and are applicable for certain boundary conditions.
Note that certain deviations are therefore possible and that technical data may vary when certain boundary conditions (e.g., viscosity) change.
Pumps delivered by Bosch Rexroth are tested for function and performance.
The pump may only be operated with the permissible data (see chapter "Technical data").
Characteristic curves
When dimensioning the gear pump, observe the maximum possible application data on the basis of the characteristic curves shown.
Filtration of the hydraulic fluid
Since the majority of premature failures in gear pumps occur due to contaminated hydraulic fluid, filtration should maintain a cleanliness level of 20/18/15 as defined by ISO 4406. Thus contamination can be reduced to an acceptable degree in terms of particle size and concentration.
Bosch Rexroth generally recommends full-flow filtration. The basic contamination of the hydraulic fluid filled in should not exceed class 20/18/15 as defined by ISO 4406. New fluids are often above this value. In such instances, a filling device with a special filter should be used.
Bosch Rexroth is not liable for wear due to contamination.
For hydraulic systems or devices with function-related, critical failure effects, such as steering and brake valves, the type of filtration selected must be adapted to the sensitivity of these devices.
Notice
When used as an auxiliary steering pump, the vehicle manufacturer should make sure that the steering system continues to operate safely as per ECE R-79 even if the auxiliary steering pump fails.
Further information
Installation drawings and dimensions are valid at date of publication, subject to modifications.
Further information and notes on project planning can be found in the “General instruction manual for external gear units” (07012-B, chapter 5.5).
Information
AZ configurator
With our practical product selector, it will take you next to no time to find the right solution for your applications, no matter whether it is SILENCE PLUS or another external gear unit.
The selector guides you through a selection of features to all of the products available for order. By clicking on the order number, you can view and download the following product information: Data sheet, dimension sheet, operating conditions, and tightening torques.
You can order your selection directly via our online shop and at the same time benefit from an additional discount of 2%. And if you need something really quickly, simply use our fast delivery and preferred programs (GoTo). Then the goods will be sent within 10 working days.
You also have the possibility to easily and conveniently configure your individual external gear unit with our AZ configurator. All the necessary data that you need for the project planning of external gear units is requested by means of the menu navigation.
For an already existing configuration you receive as a result the order number, the type code, as well as further information. If your configuration does not lead to a product that is available for order, our online tools provide you with the possibility of sending a project request directly to Bosch Rexroth. We will then get in contact with you.
Link: www.boschrexroth.com/az-configurator
Spare parts
Spare parts can be found online at www.boschrexroth.com/eshop
Select "Spare parts and accessories" and enter the material number of the external gear units into the search field.
Example:
Material number: 0 518 525 302
Type designation: AZPJ-22-012LCB20MB
All available spare parts are listed under "Spare parts" and can be ordered via the shopping basket.
Further information
- Extensive notes and suggestions can be found in the Hydraulic Trainer, volume 3: “Planning and Design of Hydraulic Power Systems”, order number R900018547.
Downloads
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