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rjb1015e_1204 ap2d

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RJ B1015E/12.04 1/12

Variable double pump AP2D

Open Circuit

Size 12...36 Series 20 / 30

Axial piston swashplate design

Nominal pressure 24.5 / 31.4 1) MPa 1) size 36 only

Contents

Ordering CodeAvailable VersionsTechnical Data

Discription and symbolUnit Dimensions size 12Unit Dimensions size 18Unit Dimensions size 25Unit Dimensions size 36Unit Dimensions gear pumps

223,456

Features

-Variable displacement pump AP2D for mini excavatorhas many regulatots available to special needs of this application.

-Double pump with one cylinder block-Compact design

-Constant power control regulator for effective useof input power

-Optional :

with power shift depend on third pump's pressure-Through drive possibility for mounthing third pump or pilot pump

-Optional :

Built in solenoid valve for pilot line or low pressurerelief valve

2/12 Bosch Rexroth AG | Mobile HydraulicsAP2D | RJ B1015E/12.04

Ordering code / Standard Program

AP2D

Axial piston unit

double pump by one cylinder-block swashplate design for open circuits

LVRS7

Size

DisplacementVgmax

12.0 cm3 X 218.0 cm3 X 225.0 cm3 X 237.0 cm3 X 2

12182536

Control device

Constant power control (direct control type)Series

Series 20Series 30

Direction of rotationviewed on shaft endShaft endSAE splined shaftPort plate

Side port and through drive 1)

121825

󰃴

23RS

clockwise

) suction port : SAE flange connection, pressure ports : G thread(JIS B2351) connection

： available

－

： not available

If a third pump and or pilot pump are factory mounted,both ordering codes must be combind with \"+\". Ordering example

\"AP2D\"ordering code + GSP2- + trochoid pump(or G1) -pump size for trochoid pump(or G1)

pump size for GSP2 gear pump

Require data for Ordering (Customer information : example)

No. of pumpsTypeDisplacementOperating pressureSpeedFlowPowerTorque

cm3MPamin-1L/minkWNm

P1, P2

AP2D18LV3RS7

16 X 224.538.4 X 2

P3GSP2-088.620.0240020.61977

12.2P4

Trochoid pump

5.13.4

RJ B1015E/12.04 | AP2DMobile Hydraulics | Bosch Rexroth AG 3/12

Technical Data

Fluid

Prior to project design, please see our data sheets RE 90220(mineral oil ) for detailed information on fluids and applicationconditions. When using ecologically acceptable fluids attentionmust be paid to possible limitations of the technical data. If necessary please contact us.

Notes on the selection of hydraulic fluid

In order to select the correct fluid, it is necessary to know theoperating temperature in the tank (open circuit) in relation tothe ambient temperature.

The hydraulic fluid should be selected so that within theoperating temperature range, the viscosity lies within theoptimum range (νopt.); see shaded section of the selectiondiagram. We recommend that the higher viscosity grade isselected in each case.

Example: at an ambient temperature of X°C the operatingtemperature in the tank is 60 °C. In the optimum viscosity

range νopt (shaded area), this corresponds to viscosity gradesVG 46 or VG 68, VG 68 should be selected.

Important: The leakage oil temperature is influenced bypressure and speed and is typically higher than the tanktemperature.However max. temperature at any point in thesystem may not exceed 90 °C.

Operating viscosity range

For optimum efficiency and service life we recommend that theoperating viscosity ( at oprating temperature ) be selected inthe range

νopt = opt. operating viscosity 16...36 mm2/s

depending on the circuit temperature(open loop circuit).

Limits of viscosity range

The following limits are valid for extreme operating conditions: νmin = 10 mm2/s

short term

at a max. permissible oil temperature of 90 °C.

Please note, that the max. fluid temperature of 115 °C is alsonot exceeded in certain areas (for instance bearing area). Thetemperature in the bearing area is approx. 5 K higher thanaverage leakage fluid temperature.νmax = 1000 mm2/s

short term on cold start

(tmin = p ≤ 3 MPa, n ≤ 1000 min–1, – 40 °C).

At temperatures between -25 °C and -40 °C special measuresmay be required for certain installation positions. Pleasecontact us for further information.

Filtration of fluid

The finer the filtration, the better the achieved cleanliness ofthe fluid and the longer the life of the axial piston unit.To ensure a reliable functioning of the axial piston unit, aminimum cleanliness of

20/18/15 acc. to ISO 4406 is necessary.

If the above cleanliness classes cannot be met please consultus.

Installation

Before commissioning, fill axial piston pump via the highestleakage oil port

Selection diagram

󰀁󰀕󰀐󰀒󰀓󰀁󰀁󰀁󰀣󰁐󰁔󰁄󰁉󰀁󰀳󰁆󰁙󰁓󰁐󰁕󰁉󰀁󰀢󰀨󰀁󰁣󰀁󰀮󰁐󰁃󰁊󰁍󰁆󰀁󰀩󰁚󰁅󰁓󰁂󰁖󰁍󰁊󰁄󰁔󰀢󰀱󰀓󰀥󰀁󰀁󰁣󰀁󰀳󰀫󰀁󰀣󰀒󰀑󰀒󰀖󰀦󰀐󰀒󰀓󰀏󰀑󰀕

Technical data

Operating pressure range

Nominal pressure p max

31.4 MPa (Size 36)

24.5 MPa (Size 12, 18, 25)

Table of values (theoretical values, without considering ηmh and ηv : values rounded)

SizeSeriesDisplacementSpeedFlowPowerTorque

Approx. weight 1)

1230

Vg max󰌽 maxq maxPmaxTmaxm

cm3min-1L/minkWNmkg

2X1228002X33.61661.914

18302X1826002X46.81975.519

25202X2526002X65.036154.927

36302X3722002X81.437160.5

) without additional function, without gear pump

Third pump, pilot pump (gear pump)

Size

Type GSP2 for all AP2D

DisplacementNorminal PressureWeightkgSize

cm3Trochoid pumpDisplacement

for sizeNorminal PressureMPa 12, 18, 25Weightwithout front flame

kgwith front flame

Size

Type G1

for size 36

DisplacementNorminal PressureWeightkg

cm3MPacm3MPa

044.5253..65.15.13.9-66.54.90.71.0

066.5253..66.56.53.9-98.94.90.91.2

1010.74.90.91.2088.6253..6

1212254.25.2

1616254.25.2

2222174.75.7

without front flamewith front flame

(built in type)

without front flamewith front flame

RJ B1015E/12.04 | AP2DMobile Hydraulics | Bosch Rexroth AG 5/12

LV - Constant power control with power shift

･The delivery pressure p1 and p2 are directed to the piston which slides on the swash plate, and acts on the swash plate.

･The spring is provided to act against the delivery pressure.

･When the oil pressure via piston acting on the swash plate is less than the installation load of the spring, the swash plate is fixed to the maximum tilting position.

･When the oil pressure via piston acting on the swash plate exceeds the installation load of the spring, the swash plate is tilted and kept tilted at a position where the oil pressure is balanced with the spring force. (Region A in above figure)

･When the p3 oil pressure acts on the shift piston, the control shifting line is shifted.

6/12 Bosch Rexroth AG | Mobile HydraulicsAP2D | RJ B1015E/12.04

Description & Symbols

DescriptionAP2D (double pump only)SymbolAP2D + Trochoid pump(Built in) Trochoid pumpAP2D + G1 gear pumpG1AP2D + GSP2 gear pumpGSP2with power shift AP2D (Built in) + GSP2 + Trochoid pumpTrochoid pumpwith power shift Full equipments type GSP2AP2D + GSP2 + G1G1GSP2RJ B1015E/12.04 | AP2DMobile Hydraulics | Bosch Rexroth AG 7/12