15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Axial Piston Pumps for Commercial Vehicles from Bosch Rexroth

Geert Geven(DCBN/SLM)

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15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

Model A17FO (KFA) A17FNO A17VO (KVA) A18VO A18VLO

Designfix displacementmiddle pressure

fix displacementlow pressure

variable displacement

middle pressure

variable displacementhigh pressure

variable displacementhigh pressure

(long-life)

Size 23, 32, 45, 63,80, 107 125 55, 80, 107 55, 80, 107 80

Speed(min-1) 2000 - 3050 1750

2500, 2240,2150

2500, 2240,2150 2240

Pressure(bar) 300 / 350

New ! 350 /400250 / 300 300 / 350 350 / 400 350 / 400

Weight(kg)

5,9 15 15 16, 21, 25 16, 21, 25 24,4

Data Sheet RE 91520 RE 91510 RE 92260 RE 92270 RE 92280

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15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Axial Piston Pumps for Commercial Vehicles from Bosch Rexroth

Working PrincipalBent Axis versus Swash Plate

high relative movement

V = 40 km/h(A4VG125, 2200 min-1)

sensitive to contamination

bent axis

no relative movement

V = 0

robust towards contamination

swash plate

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15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Axial Piston Pumps for Commercial Vehicles from Bosch Rexroth

Swashplate Bent axis Through drive possibility No through drive

9 piston: => lower pulsation => lower noise level

7 piston

Suction port separated from leakage => transport of heated oil to reservoir

Common or separated suction and leakage port

Filtration requirement 10 20 Filtration requirement 40

Hydrostatic force-compensation => lower friction

No hydrostatic force-compensation

Axial forces are taken up in the housing => higher lifetime

Axial forces taken up by roller bearings => lower lifetime

Torque transmission on cylinder => cross forces on piston

Torque transmission on rotary flange => no cross forces on piston

Not sensitive against rotating-oscillation Sensitive against rotating-oscillation

Nearly identical efficiency Nearly identical efficiency

Lower speeds in standard version Higher speeds

Small swivel angle (15) Large swivel angle (VO = 26,5, FO = 40)

Easy change of flow direction Change of flow direction requires big space

Very low swivel time (lower masses) => high dynamic

Large swivel time, (high masses): =>low dynamic

Swashplate

Bent axis

4

Swashplate

Bent axis

Through drive possibility

No through drive

9 piston:=> lower pulsation=> lower noise level

7 piston

Suction port separated from leakage=> transport of heated oil to reservoir

Common or separated suction and leakage port

Filtration requirement 10 20

Filtration requirement 40

Hydrostatic force-compensation=> lower friction

No hydrostatic force-compensation

Axial forces are taken up in the housing=> higher lifetime

Axial forces taken up by roller bearings=> lower lifetime

Torque transmission on cylinder=> cross forces on piston

Torque transmission on rotary flange=> no cross forces on piston

Not sensitive against rotating-oscillation

Sensitive against rotating-oscillation

Nearly identical efficiency

Nearly identical efficiency

Lower speeds in standard version

Higher speeds

Small swivel angle (15)

Large swivel angle (VO = 26,5, FO = 40)

Easy change of flow direction

Change of flow direction requires big space

Very low swivel time (lower masses)=> high dynamic

Large swivel time, (high masses):=>low dynamic

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Axial piston unit A17FO/VO

Basics: Bent axis design

5

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

6

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Axial piston unit A17VO . VO

Basics: Bent Axis Design

Self centering rotary group Spherical Cylinder One piece conical piston Tapered roller bearing Automatical bearing lubrication Hydrostatical relief

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15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

8

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Axial piston unit A17VO . VO

Basics: hydrostatic Relief

9

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Axial piston unit A17VO . VO

Parts:Control lense, Piston with pistonrings

10

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

A17FO

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ISO 7653 Mounting flangeDIN ISO 14 Drive shaft

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

12

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

13

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

14

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

15

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

16

15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal, exploitation, reproduction, editing, distribution, as well as in the event of applications for industrial property rights.

Overview - Truck pump A17/A18

A17FOFeatures/application Compact design for use in commercial

vehicles High power density with small

dimensions Direction can easily be changed Good self-suction characteristics Low noise level

Nominal pressure 300 bar 350 barMaximum pressure 350 bar 400 bar

A17FO Series 10Sizes 23, 32, 45,

63, 80, 107

Data sheet RE 91520

2D + 3D-Model

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15/04/2015 | Geert Geven - DCBN/SLM | Kramp Training A17-18VO/FO-A2F | Bosch Rexroth AG 2015. All rights reserved, also regarding any disposal