basic menu motor operating principleresource.jerei.com/11230/1306071800310_0.pdf · 0 10 20 30 40...
TRANSCRIPT
![Page 1: Basic MENU Motor Operating Principleresource.jerei.com/11230/1306071800310_0.pdf · 0 10 20 30 40 50 60 70 80 OML OMM OMP / DH OMR / DS OMH OMEW OMS OMT OMV TMK TMT TMV KW Basic Motor](https://reader033.vdocuments.site/reader033/viewer/2022041519/5e2d440d746ddd62300dc475/html5/thumbnails/1.jpg)
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Basic
Motor Operating Principle
• Sauer Danfoss LSHT motors are fixed displacement, high torque motors.
– For a given oil flow and pressure, the displacement determines the torque and speed
– For a given displacement,
the oil flow rate determines
the speed, and the pressure
determines the torque
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0 10 20 30 40 50 60 70 80
OML
OMM
OMP / DH
OMR / DS
OMH
OMEW
OMS
OMT
OMV
TMK
TMT
TMV
KW
Basic
Motor Program
Mini Motors
Medium-sizedMotors
Large Motors
O – series
Large Motors
T- series
Large
Small
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• Hydraulic energy (flow/pressure) is translated into mechanical energy by means of a gearwheel set, cardan shaft, andoutput shaft.
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Basic
Motor Operating Principle
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Basic
The Gearwheel Set
• The Gearwheel set consists of two parts
1. External rim (rollers)
• Integral part of motor housing
2. Internal gearwheel
• Rotates within the rim and orbits around the center
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Basic
The Cardan Shaft
• The cardan shaft transmits the torque from the gearwheel shaft to the output shaft
• The cardan shaft design allows the cardan shaft centerline to orbit with the eccentricity of the gear set
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Basic
The Output Shaft
• The output shaft transmits the torque to the application.
• The output shaft and bearings also bear the radial load
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Basic
How does it work?
• A valve is needed to meter flow into and out of the chambers in the gear wheel.
• Sauer Danfoss motors utilize one of two types of valves
– Spool valve
– Disc Valve
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Basic
How does it work?
• Spool Valve– The spool valve is integrated into the shaft
– The cardan shaft therefore serves two purposes—to transmit torque, and to rotate the valve
– This design results in a compact motor with few rotating parts
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Basic
How does it work?
• Disc Valve
– Distributor valve separated from the output shaft and driven by a separate cardan shaft
– A balance plate counterbalances the forces around the distributor valve minimizing volumetric and mechanical losses
– This design results in precise valve function with high volumetric efficiency at all pressures
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Overview
Main types
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Selection
Application Considerations
• Geroller vs. Gerotor
• Spool Valve vs. Disc Valve
• Bearing Capacity / Shaft Strength
• Shaft Seal Considerations
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Selection
Geroller vs. Gerotor
– Advantages of Geroller motor• Smoother running
• Better efficiency (and more consistent efficiency over life of motor)
• Better life
– Particularly in applications with many starts/stops/reversals
– Advantages of Gerotor motor• Cost !
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– Advantages of Disc Valve• Higher volumetric efficiency
– Steady speed at lower flows
• No timing error due to deflection in main cardan shaft
– Advantages of Spool Valve• Low cost, simple design, Low weight
Selection
Spool Valve vs. Disc Valve
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Selection
Roller Bearings vs. Journal Bearings
– Journal Bearings• Continuous operation
• Mainly one direction of rotation
• Moderate radial and axial loads
– Needle Bearings• Many starts and stops
• Reversing load
• Moderate radial and axial loading
– Roller Bearings• Many starts and stops
• Reversing load
• High radial and axial loading
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High Pressure Shaft Seal
Standard Shaft Seal
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Selection
Shaft Seal Considerations
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Mini Motors
Specifications
Specifications OML OMM
Displacement cm3/rev 8 - 32 8 - 50
Max Cont. Pressure drop bar 70 100
Max. Cont. Oil flow l/min 16 20
Max. Int. Output kW 2.0 3.2
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Medium Size MotorsMENU
OMP DH OMR DS OMH OMEW
Displacement cm3/rev 25 - 400 36 - 400 50 - 375 50 - 375 200 - 500 100 - 400
Max Cont. Pressure drop bar 140 125 175 140 175 200
Max. Cont. Oil flow l/min 60 60 60 60 74 60
Max. Int. Output kW 13 12 15 14 18,5 15
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Large Motors
OMS OMT OMV TMK TMT TMV
Displacement cm3/rev 80 - 500 160 - 500 315 - 800 160 - 470 250 - 630 400 - 800
Max Cont. Pressure drop bar 175 200 200 250 250 250
Max. Cont. Oil flow l/min 75 125 200 80 125 200
Max. Int. Output kW 21 40 64 27 51
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� Special Flange
� Splined shaft
• 1 inch
• 1 ¼ inch
� Standard Flange
� P.T.O. shaft
� A2 flange
� SAE B Flange� Wheel Flange
� Tapered Shaft
• 35 mm
• 1 ¼ inch
� Magneto Flange
� Cylindrical Shaft
• 32 mm
• 1 inch
• 1 ¼ inch
Large Motors – OMS/T/V
Standard Flange & Shaft Options
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Output shaft Cardan shaft Valve drive Distributor valve
Large Motors – TMK/TMT/TMVW DesignMENU
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Motor Options
OML OMM OMP DH OMR DS OMH OMEW OMS OMT OMV TMK TMT TMV
Painted Motors O O O O O O O S O O O S S S
Wheel Version S S S S S S S S S
Motor with Needle Bearings S S
Motor with Special Dust Seal O O O O
Low Leakage Motor O O
Motor with Corrosion Resistant Parts S S
Motor with Endport S S S O S
Short Motor S S S S
Ultra Short Motor O O O O
Motor with Speed Sensor O O O O O O
Motor with Reinforced Parts O O O
Motor with Integrated Flushing Valve O
Slewing Motor O
Motor with Brake Nose S O O
Motor with Negative Brake S S S S
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S = Standard
O = Optional
Blank = Not available
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Motor Options
Wheel Motor
OMPW
OMPW N
OMRW N
OMEW
OMSW
OMTW
OMVW
TMKW
TMTW
TMVW
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Motor Options
Special Dust Seal
Gamma-ring
Grease
Standard dust seal
Shaft seal
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Motor Options
Short Motor
OMSS
OMTS
OMVS
OMTS
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Motor Options
Ultrashort
OMSU
OMTU
OMVU
OMTU
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Motor Options
Motor with negative brake OMR F
Displacement 80-375 cm3/rev
Holding torque 400 Nm
Min. brake release pressure 21 bar
Max. pressure in brake line 200 bar
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Motor Options
Motor with speed sensor
OMM EMD
OMP EMD
OMR EMD
OMS EMD
OMT EMD
OMV EMD
TMK EMD
TMT EMD
TMV EMD
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New
EMD speed sensor for Orbital-motors.
• Speed and Direction output – Pulse + Direction signal
– Quadrature signal
– CAN signal (J1939)
• Modular design– Available for OMM, OMP, OMR, OMS, OMT, OMV, TMK, TMT
and TMV
• Adapt the speed sensor to your needs with PLUS+1 Service Tool
• Highest resolution in the market – 180 pulses/revolution (default setting)=> 1 deg resolution
• Easy mounting – mount at needed angle and insert click lock
• Sensor is not in contact with oil making it robust and exchangeable in the field
• Compact design
• IP 69K*
• Patented design
OMTW with EMD
* If Deutsch connector gets additional protection
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EMD speed sensor for Orbital-motors
Examples of EMD Applications
Beet harvester
Forestry harvester head
Paver Harvester Skid Steer Loader
Forestry machine
Salt spreader
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Applications
Mini & Medium-sized Motors
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Applications
Large Motors O-Series
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Applications
Large Motors T–Series
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Where do I find information on LSHT Motors?
Support
Literature
MENU
• Catalogues
• Tech Notes
• Service Notes
• Intranet / Internetwww.sauer-danfoss.com