Variable Displacement Motor
HMV-02

Displacement size from 55 to 280 cc
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Variable discplacement motors for open and closed circuit operation

Standard hydraulic motors at low speeds in their starting phase cannot generate the necessary torque. Therefore, the power of the fast spinning hydraulic motors has to be reduced by means of several step gearboxes down to the speed needed on the wheel. Somewhat higher windage losses and poorer mechanical efficiency are benevolently accepted in this context. Quite the opposite holds true for the motors by Linde Hydraulics: The motors of the Series 02 are capable of transmitting the required torque even at low speed and make it possible to start smoothly and sensitively.

Advantages

  • jerk-free low speed
  • high starting torque
  • large conversion range
  • zero angle possible
  • dynamic response
  • PTO through-drive motor
  • compact design
  • high power density
  • high reliability
  • long service life

Design characteristics

  • axial piston motor in swashplate design for high pressure closed and open circuit systems
  • optimized starting and low speed behaviour
  • purge valves for circuit and case flushing optional
  • stepless or 2-position control
  • electric or hydraulic controls
  • superposed pressure control optional
  • brake pressure shut off optional
  • swivelling to 0 cc/rev
  • high pressure relief valves available
  • through shaft with free shaft end or with coupling flange
  • SAE high pressure ports radial or axial
  • SAE mounting flange with ANSI or SAE spline shaft
  • plug-in version optional
  • speed sensor optional
  • counter balance valve optional
  • double and tandem motor available

Controls

  • H1 hydraulic stepless
  • H2 hydraulic 2-position
  • H4 hydraulic stepless Vmin= 0 cc/rev
  • E1 electro-hydraulic stepless
  • E2 electro-hydraulic 2-position
  • E4 electro-hydraulic stepless Vmin= 0 cc/rev
  • E6 as E4 with inverted shifting
  • EH1P-CA hydraulic stepless with pressure override and electric pressure selection

Maximum displacement override

  • pneumatic
  • hydraulic (high and low pressure)
  • electric

Technical Data

HMV-02 55 75 105 135 165 210 280 105D 165D
Max.displacement cc/rev 54.7 75.9 105 135.6 165.6 210 281.9 210 331.2
Max. operating speed at Vmax rpm 4300 3800 3700 3200 3100 2700 2400 3300 2900
Max. speed at Vmax* rpm 4400 4100 3800 3500 3400 3000 2700 3400 3100
Max. operating speed at Vmin rpm 4700 4400 4100 3700 3500 3200 2900 4100 3500
Max. speed at Vmin* rpm 5300 5000 4700 4000 3900 3500 3200 4400 3700
Nominal pressure bar 450 450 450 450 450 450 450 450 450
Max. pressure** bar 500 500 500 500 500 500 500 500 500
Output torque (Δp=430bar) Nm 374 519 719 928 1133 1438 1929 1437 2267
Corner power (theor.)*** kW 184 239 309 360 415 482 586 677 878
Weight approx. (without oil) kg 28 32 42 56 76 101 146 98 149
* highest transient speed, that can temporarily occur
** highest transient pressure, that can temporarily occur
*** (Vmax x nmax at Vmin x ∆p 430 bar)

Sectional View of the Variable Displacement Motor

  • 1control: optional swashing to 0 cc/rev
  • 2swash plate: hydrostatic bearing
  • 3piston-slipper assembly: 21° swash angle
  • 4housing: monoshell for high rigidity
  • 5valve plate housing: highly integrated
  • 6control piston: integrated, hydraulically captured
  • 7rotating group: precise torque transmission even at low speeds
  • 8optional Through-Drive: available with two shaft ends for torque transmission

Downloads

Name File-Type Size  
Product Catalogue. Turning Power into Motion PDF 3.28 Mb Download
HMF/A/V/R-02 – Hydraulic motors for closed and open circuit operations PDF 1.73 Mb Download
HMV-02_CAD_Download ZIP 31.62 Mb Download

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