Bosch Rexroth — гидравлическая энергия без потерь
В гидравлических системах промышленного оборудования и мобильной техники ключевую роль играют насосы, преобразующие меха...
Читать далее →Артикул: RX7751
В наличии
Цена по запросу Стоимость зависит от выбранного способа оплаты и количества товара.
Не отвечаем 5 минут — скидка на весь заказ!
Нужна скидка? Звони — сделаем лучшее предложение
Работаем по всей России
Возможны самовывоз и доставка по всей территории России
Надежность
Профессиональная поддержка
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.
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 12 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.


| 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 |
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.

qconst = 2 to 30 l/min

qconst = 2 to 30 l/min

qconst = 2 to 30 l/min; p1 = 100 to 180 bar

p1 = 5 to 250 bar



| 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 |
AZPG…032… + AZPG…022… + AZPJ…016… + AZPJ…012…
| Size | 20 | 22 | 25 | 28 | 32 | 36 | 20 | 22 | 25 | 28 | 32 | 36 | ||||
| Series | Series 1x | Series 2x | ||||||||||||||
| Displacement | Vg | cm³ | 20 | 22.5 | 25 | 28 | 32 | 36 | 20 | 22.5 | 25 | 28 | 32 | 36 | ||
| Pressure at suction port S 1) | absolute | pe | bar | 0.7 ... 3 | ||||||||||||
| Maximum continuous pressure | p1 | bar | 230 | 230 | 230 | 210 | 180 | 160 | 250 | 250 | 250 | 230 | 210 | 180 | ||
| Maximum intermittent pressure | p2 | bar | 250 | 250 | 250 | 230 | 200 | 180 | 280 | 280 | 280 | 260 | 240 | 210 | ||
| Maximum pressure peaks | p3 | bar | 270 | 270 | 270 | 250 | 220 | 200 | 300 | 300 | 300 | 280 | 260 | 230 | ||
| Minimum speed at | ν = 12 mm²/s | p < 100 bar | nmin | rpm | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 | 500 |
| p = 100 bar … 180 bar | nmin | rpm | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | 600 | ||
| p = 180 bar … p2 | nmin | rpm | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | 800 | ||
| ν = 25 mm²/s | at p2 | nmin | rpm | 500 | 500 | 500 | 400 | 400 | 400 | 500 | 500 | 500 | 500 | 500 | 500 | |
| Maximum speed | at p2 | nmax | rpm | 3000 | 3000 | 3000 | 2800 | 2800 | 2800 | 3000 | 3000 | 3000 | 2800 | 2800 | 2800 | |
| 1) | In the case of tandem pumps, the suction-side pressure difference between the individual pump stages must not exceed 0.5 bar. |

| 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) |

You can find diagrams for a rough calculation in chapter "Diagrams / Characteristic curves".
| 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) | |||
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:
Other hydraulic fluids on request.
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:
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 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).
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.




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.

| Drive shaft | Mmax | Size | p2 max | p2 max | |
| Code | Designation | Nm | bar | bar | |
| P | SAE J744 19-4 11T | 180 | 20 … 25 | 250 | 280 |
| 28 | 230 | 260 | |||
| 32 | 200 | 240 | |||
| 36 | 180 | 210 | |||
| D | SAE J744 22-4 13T | 320 | 20 … 25 | 250 | 280 |
| 28 | 230 | 260 | |||
| 32 | 200 | 240 | |||
| 36 | 180 | 210 | |||
| Drive shaft | Mmax | Size | p2 max | p2 max | |
| Code | Type | Nm | bar | bar | |
| C | 1 : 5 | 200 | 20 … 25 | 250 | 280 |
| 28 | 230 | 260 | |||
| 32 | 200 | 240 | |||
| 36 | 180 | 210 | |||
| Drive shaft | Mmax | Size | p2 max | |
| Code | Designation | Nm | bar | |
| N | Tang drive | 95 | 20 | 250 |
| 22 | 230 | |||
| 25 | 210 | |||
| 28 | 190 | |||
| 32 | 160 | |||
| 36 | 140 | |||
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.
Basically, the parameters of the single pumps apply, however certain restrictions need to be observed:
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.
In the case of pumps of the platform N (AZPN,AZPT), the driver for the following pump stage can carry a load of up to Mmax = 95 Nm. Please note possibly resulting pressure restrictions for the following pump stages.

| Following pump | Mmax [Nm] | |
| Platform N | AZPN | 95 |
| AZPT | 95 | |
| Platform F | AZPF | 65 |
| AZPS | 65 | |
| AZPJ | 65 | |
| Platform B | AZPB-3x | 25 |
For applications with higher transfer torques or torsional vibrations reinforced through drives up to Mmax = 160 Nm are available. Lay out design on request.







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.













| NG | Pressure side | Suction side | ||||||
| C | D | E | F | C | D | E | F | |
| mm | mm | mm | mm | mm | mm | |||
| 20 | 18 | 47.6 | 22.2 | M10; 14 mm deep | 18 | 47.6 | 22.2 | M10; 14 mm deep |
| 22 … 36 | 26.2 | 26 | 52.4 | 26.2 | ||||

| NG | Pressure side | Suction side | ||||
| C | D | E | C | D | E | |
| mm | mm | mm | mm | |||
| 20 … 36 | 18 | 55 | M8; 13 mm deep | 26 | 55 | M8; 13 mm deep |
AZPN – 11 – … CB20MB

| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | ||
| Direction of rotation | p2 | nmax | m | A | B | ||
| counter-clockwise | clockwise | bar | rpm | kg | mm | mm | |
| 20 | 0 510 625 335 | 0 510 625 035 | 250 | 3000 | 5.4 | 52 | 109.8 |
| 22 | 250 | 3000 | 53.1 | 112.8 | |||
| 25 | 0 510 725 352 | 0 510 725 047 | 250 | 3000 | 5.6 | 55 | 115.8 |
| 28 | 0 510 725 364 | 0 510 725 055 | 230 | 2800 | 5.7 | 56.5 | 118.8 |
| 32 | 0 510 725 353 | 0 510 725 048 | 200 | 2800 | 5.9 | 59 | 123.3 |
AZPN – 1X – … DC20MB
AZPN – 1X – … DC20KB

| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | ||
| Direction of rotation | p2 | nmax | m | A | B | ||
| counter-clockwise | clockwise | bar | rpm | kg | mm | mm | |
| 20 | 250 | 2500 | 52 | 110.1 | |||
| 22 | 250 | 2500 | 53.5 | 112.6 | |||
| 25 | 0 510 725 377 | 0 510 725 057 | 250 | 2500 | 5.5 | 55 | 115.3 |
| 25 | 0 510 725 094 | 250 | 2500 | 5.5 | 55 | 115.3 | |
| 28 | 0 510 725 431 | 0 510 725 058 | 230 | 2500 | 5.7 | 56.5 | 118.3 |
| 36 | 0 510 725 363 | 0 510 725 155 | 180 | 2500 | 6 | 61 | 123.3 |
AZPN – 11 – … DC07KB S0023

| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | Version | ||
| Direction of rotation | p2 | nmax | m | A | B | |||
| counter-clockwise | clockwise | bar | rpm | kg | mm | mm | ||
| 20 | 0 510 625 380 | 0 510 625 073 | 250 | 3000 | 5.3 | 52 | 109.8 | 2 |
| 22 | 0 510 725 404 | 0 510 725 103 | 250 | 3000 | 5.4 | 52 | 112.8 | 1 |
| 25 | 0 510 725 405 | 0 510 725 104 | 250 | 3000 | 5.5 | 55 | 115.8 | |
| 28 | 0 510 725 406 | 0 510 725 105 | 230 | 2800 | 5.7 | 56.5 | 118.8 | |
| 32 | 0 510 725 407 | 0 510 725 106 | 200 | 2800 | 5.8 | 59 | 123.3 | |
| 36 | 180 | 2600 | 61 | 127.8 | ||||
AZPNN – 11 – … DC0707KB S0023

| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | |||||
| PI | PII | Direction of rotation | p2 I | p2 II | nmax | m | A | B | C | |
| counter-clockwise | clockwise | bar | bar | rpm | kg | mm | mm | mm | ||
| 20 | 20 | 0 510 665 461 | 0 510 665 149 | 250 | 250 | 2000 | 9.9 | 52 | 160.7 | 217.9 |
| 22 | 20 | 0 510 765 369 | 250 | 250 | 2000 | 10 | 53.5 | 163.6 | 222.7 | |
| 22 | 22 | 0 510 765 380 | 0 510 765 086 | 250 | 230 | 3000 | 10.1 | 53.5 | 165.2 | 225.7 |
| 25 | 20 | 0 510 765 067 | 250 | 250 | 2000 | 10.1 | 55 | 166.6 | 225.7 | |
| 25 | 22 | 0 510 765 068 | 250 | 230 | 3000 | 10.2 | 55 | 168.2 | 228.7 | |
| 25 | 25 | 0 510 766 315 | 0 510 765 069 | 250 | 200 | 3000 | 10.3 | 55 | 169.7 | 229.9 |
| 32 | 32 | 0 510 765 370 | 0 510 768 034 | 200 | 160 | 2500 | 10.9 | 29 | 181.2 | 244.9 |
AZPNF – 1X – … DC0720KB S0023
AZPNF – 1X – … DC0720KB S0081
AZPNF – 1X – … DC0720MB S0081

| NG | Material number | Maximum pressure | Maximum | Weight | Dimensions | |||||
| PI | PII | Direction of rotation | p2 I | p2 II | nmax | m | A | B | C | |
| counter-clockwise | clockwise | bar | bar | rpm | kg | mm | mm | mm | ||
| 20 | 4 | 0 510 665 181 | 250 | 280 | 3000 | 52 | 141.5 | 184.2 | ||
| 22 | 8 | 0 510 765 387 | 0 510 765 078 | 250 | 280 | 3000 | 8.4 | 53.5 | 147.9 | 193.8 |
| 22 | 11 | 0 510 765 381 | 0 510 765 062 | 250 | 280 | 3000 | 8.5 | 53.5 | 151.7 | 200.6 |
| 25 | 4 | 0 510 766 316 | 250 | 280 | 3000 | 55 | 147.6 | 190.2 | ||
| 25 | 11 | 0 510 765 377 | 0 510 765 079 | 250 | 280 | 3000 | 8.6 | 55 | 154.7 | 203.6 |
| 25 | 14 | 0 510 766 014 | 250 | 250 | 3000 | 8.7 | 55 | 155.2 | 206.8 | |
| 25 | 16 | 0 510 765 080 | 250 | 230 | 3000 | 8.8 | 55 | 155.2 | 210.2 | |
| 28 | 11 | 0 510 765 092 | 230 | 280 | 2800 | 8.7 | 56.5 | 157.7 | 206.6 | |
| 28 | 16 | 0 510 765 384 | 0 510 765 063 | 230 | 230 | 2800 | 8.9 | 56.5 | 158.2 | 213.2 |
| 28 | 19 | 0 510 766 314 | 0 510 767 058 | 200 | 200 | 2800 | 9 | 56.5 | 158.2 | 219.8 |
| 28 | 22 | 0 510 767 045 | 230 | 200 | 2100 | 9.2 | 56.5 | 165.8 | 223.6 | |
| 28 | 22 | 0 510 767 332 | 230 | 150 | 2100 | 9.3 | 56.5 | 165.8 | 223.6 | |
| 32 | 8 | 0 510 765 064 | 200 | 280 | 2500 | 8.8 | 59 | 158.4 | 204.3 | |
| 32 | 11 | 0 510 768 320 | 0 510 765 065 | 200 | 280 | 2500 | 8.9 | 59 | 162.2 | 211.1 |
| 32 | 14 | 0 510 765 378 | 200 | 250 | 2500 | 9 | 59 | 162.7 | 216.1 | |
| 32 | 16 | 0 510 765 066 | 200 | 230 | 2500 | 9.1 | 59 | 162.7 | 217.7 | |
| 32 | 22 | 0 510 768 318 | 200 | 150 | 2100 | 59 | 170.3 | 229.9 | ||
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").
When dimensioning the gear pump, observe the maximum possible application data on the basis of the characteristic curves shown.
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.
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).
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
You want to quickly determine the noise level of an application but don’t have a measuring device at hand? No problem with Fit4SILENCE! Our new noise measurement app for all Android devices can be immediately downloaded free of charge. After calibration, you can start using it straight away and conduct fast, accurate noise measurements with different weightings in no time at all. An additional measuring device is no longer necessary, because calibrated smartphones using the app can achieve an accuracy that approximates professional measuring devices.
Last but not least, the app contains interesting information about the SILENCE PLUS technology, including an audio sample.
Link: www.boschrexroth.com/silence-plus

| LK | D | Series 1) | Material number | pmax | K1 | K2 | K3 | K4 | K5 | K6 | K7 | K9 | K10 | SW | Screws | O-ring | Weight | |
| mm | mm | bar | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | 2 × | 2 × | NBR | kg | ||
| 55 | 20 | S | 1 515 702 004 | 250 | 13 | 18.2 | 45 | 34.5 | 24 | 38 | 57 | 8.4 | 58 | 36 | M8 × 25 | M8 × 50 | 32 × 2.5 | 0.62 |
| 55 | 30 | S | 1 545 719 006 | 250 | 12 | 26.5 | 49 | 38.5 | 32 | 51 | 63.5 | 8.4 | 58 | 50 | M8 × 25 | M8 × 50 | 32 × 2.5 | 0.63 |
| 55 | 35 | L | 1 515 702 005 | 100 | 12 | 26.5 | 49 | 38.5 | 32 | 52 | 61 | 8.4 | 58 | 50 | M8 × 25 | M8 × 60 | 32 × 2.5 | 0.77 |
| 55 | 42 | L | 1 515 702 019 | 100 | 12 | 26.5 | 49 | 38 | 40 | 64 | 61.5 | 8.4 | 58 | 60 | M8 × 25 | M8 × 70 | 32 × 2.5 | 1.04 |
| 1) | See DIN EN ISO 8434-1 |
Permissible tightening torques can be found in the “General Operating Instructions for External Gear Units” (07012-B).
Официальный поставщик Bosch Rexroth
Продажи на территории России
Оптовые и розничные продажи
Снижение логистических расходов
Индивидуальные условия
Выгода без посредников
Единая система поставок
Весь ассортимент на складе