Short Description

Variable Flange Motors DMVALiebherr Components

From A to Z – the components division of the Liebherr Group offers a broad range of solutions in the area of mechanical, hydraulic, electric and electronic drive system and control technology. The efficient components and systems are pro-duced at a total of ten production sites around the world to the highest standards of quality. Central contact persons for all product lines are available to our customers at Liebherr-

Components AG and the regional sales and distribution branches.

Liebherr is your partner for joint success: from the product idea to development, manufacture and commissioning right through to customer service solutions like remanufacturing.

components.liebherr.com

Gas engines Diesel engines Fuel injection systems Axial piston hydraulics Hydraulic cylinders

Human-machine interfacesand gateways

Control electronics and sensor technology

Power electronics Control cabinets Software

Slewing bearings Gearboxes and winches Electric machines Remanufacturing

Liebherr-Components AGPost box 222, CH-5415 Nussbaumen / AG +41 56 296 43 00 components@liebherr.com

Liebherr USA, CO.1465 Woodland Drive, Saline, MI 48176, USA +1 734 944 63 34 components.usa@liebherr.com

The Liebherr axial piston motors DMVA series have a swash plate design for the open and closed circuit and were specially developed for use in mobile machinery in harsh environments.

The inverse drive with a swivel angle of 22° is very efficient and has a very high power density, making it ideal for appli-cations that require an adjustable displacement.

The variable flange motors are available in nominal sizes ranging from 108 to 370. The nominal pressure is 450 bar and the maximum pressure is 500 bar absolute.

The optional through-drive can be used for mounting a brake or tandem motor.

The DMVA series is available with the most common controls. Speed sensor or preparation for speed sensor available on request.

Valid for:DMVA 108DMVA 165DMVA 215DMVA 370

Features:Series DOpen and closed circuit

Regulator types:Various regulator types can be selected

Pressure range:Nominal pressure pHDN = 450 bar Max. pressure pHDmax = 500 bar

B

E

F

D

A

9

B

C

Vg min Vg max

px

Vg min Vg max

pB

Vg min Vg max

I

Vg min Vg max

px

Vg min Vg max

pB

Technical Data Series D:

DMVA motor (variable displacement)

Technical DataProduct dimensions (mm)* 108 165 215 370Splined shaft profile DIN 5480 Tol. 9g W40 x 2 x 18 W45 x 2 x 21 W50 x 2 x 24 W60 x 2 x 28Centering diameter A fit h8 160 180 200 250Screw connection pitch B 141.4 158.4 176.7 352 x 120Fastening bores C 18 18 22 26Splined shaft length D 54 60 / 68 65 78SAE connection length, pressure E 309 357 - -Overall length F 337 376 447 433.5Pressure ports SAE J518 (6,000 psi) 1" 1 1/4" 1 1/4" 1 1/2"Oil leakage port ISO 9974-1 M26 x 1,5 M26 x 1,5 M33 x 2 M33 x 2

Note:A brake valve can be attached. The pressure ports can be at the rear or side on the connecting plate.

DMVAvariable displacement, open and closed circuit, nominal pressure 450 bar, maximum pressure 500 bar

Nominal size 108 165 215 370Displacement Vg max [cm3] 107.7 167.8 216.5 371.2Max. speed at Vg max and Δp = 430 bar, nmax [rpm] 3,350 3,000 2,700 2,400Max. speed at Vg / Vg max= 0.65 and Δp = 200 bar, nmax [rpm] 5,125 4,590 4,100 3,000Flow at nmax, qv max [l / min] 361 503 584 891Output power Δp = 430 bar, Pmax [kW] 259 361 419 638Output torque Δp = 430 bar, Tmax [Nm] 737 1,149 1,481 2,538Available controls EL, EL-DA, SD, SD-DA, HD

Control / regulation Other control function combinations available on request.Electrical adjustment with proportional magnet (positive or negative characteristic curve)

Hydraulic adjustment, depending on control pressure (positive or negative characteristic curve)

Pressure cut-off Hydraulic adjustment,high-pressure related

Hydraulic two-pointcontrol

* Dimensions may vary according to configuration and additional equipment (installation drawing on request).

Type code for DMVA motorsDMVA O /

Motor type

Series-D / Motor / Variable displacement DMVA

Circuit type

Open O

Closed G

Nominal size (per rotating group)

108 165 215 370

• • • •

• Available

On request- Not available

Design

1

Minimum displacement (Other values on request)

0 – 66 cm³ Values given in cm³/rpm

Mounting flange (Other mounting flanges on request)

DIN / ISO 3019-2 • • • 31...

Non-standard flange - • 51...

Direction of rotation (looking at input shaft)

Alternating • • • • W

Shaft end

Splined shaft DIN 5480 • • • • 1

Additional equipment

No attachment • • • • O

Through-drive

Without through-drive • • • 0

Non-standard through-drive • K

Valve / Sensor

Without • • 0

High pressure limiting valve • • • OH

Hydraulically adjustable high pressure relief valve OX

Flushing for closed circuit • • • SO

Flushing for open circuit • MO

Flushing for open circuit with high pressure relief valve MH

High pressure relief valve with brake valve • • • BH

Sensor technology

Without • • • • 0

With speed sensor • • • • D

With swash plate angle sensor • • • W

Control / regulation

Hydraulic adjustment, high-pressure related • • - - HD

Hydraulic adjustment depending on control pressure / pressure cut-off • SD / DA

Electrical adjustment with proportional magnet • • • • EL

Hydraulic two point control ZH

Electrical adjustment with proportional magnet / pressure cut-off • • • EL / DA

Hydraulic proportional (falling characteristic) • SD

Connections

ISO 6162-2 / SAE J518-2, high pressure ports 6,000 PSI • • • • A

Liebherr Components

From A to Z – the components division of the Liebherr Group offers a broad range of solutions in the area of mechanical, hydraulic, electric and electronic drive system and control technology. The efficient components and systems are pro-duced at a total of ten production sites around the world to the highest standards of quality. Central contact persons for all product lines are available to our customers at Liebherr-

Components AG and the regional sales and distribution branches.

Liebherr is your partner for joint success: from the product idea to development, manufacture and commissioning right through to customer service solutions like remanufacturing.

components.liebherr.com

Gas engines Diesel engines Fuel injection systems Axial piston hydraulics Hydraulic cylinders

Human-machine interfacesand gateways

Control electronics and sensor technology

Power electronics Control cabinets Software

Slewing bearings Gearboxes and winches Electric machines Remanufacturing

Liebherr-Components AGPost box 222, CH-5415 Nussbaumen / AG +41 56 296 43 00 components@liebherr.com

Liebherr USA, CO.1465 Woodland Drive, Saline, MI 48176, USA +1 734 944 63 34 components.usa@liebherr.com

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