Lenze MDSKSRS071-03

Product Name
MDSKS synchronous permanent-magnet servo motor with resolver feedback and natural convection.
Product Introduction
MDSKSRS071-03 is listed in spare-part and servo catalogs under the Lenze MDSKS family, not under Mitsubishi. The motor provides medium-power synchronous servo performance with resolver feedback and ribbed self-cooled housing for machine axes that require accurate speed and position control.
Category:
Description
Technical Specifications
Rated power: 2.0 kW.
Rated voltage: 330 V AC.
Rated current: 4.2 A.
Maximum current: 19 A.
Rated speed: 3400 r/min.
Rated torque: 5.7 Nm.
Stall torque: 6.7 Nm.
Supply frequency: 170 Hz.
Frame: 071.
Flange drilling class: 71 mm in supplier mechanical listings.
Overall square envelope: 130 mm in configured units.
Shaft diameter: 19 mm.
Feedback: resolver.
Cooling: natural convection.
Protection class: IP54.
Insulation class: F.
Rotor inertia: 0.005 kg·m² in listed mechanical configuration.
Weight: 3.2 kg for basic motor bodies and 7.8 kg for configured units with flanges, brakes or attached gearing.
Functional Features
Permanent-magnet rotor for high torque density.
Resolver feedback for noise-resistant closed-loop control.
Ribbed square housing for passive cooling.
Compact 071 frame suitable for limited cabinet space.
Application Scenarios
CNC machine tool feeds, packaging machines, labeling and filling systems, printing presses, textile machines, material-handling conveyors and robotic auxiliary axes.
Performance Parameters
Rated torque of 5.7 Nm is sustained at 3400 r/min and 330 V. Stall torque of 6.7 Nm supports starting and short overload periods within the 19 A peak current limit. Natural convection cools the motor under normal duty; forced ambient airflow improves thermal headroom.
Material Composition
Permanent-magnet rotor assembly, laminated silicon-steel stator, copper winding, aluminum ribbed frame, steel shaft, resolver sensor, molded terminal or connector housing.
Structural Characteristics
Square servo enclosure with longitudinal cooling ribs, standard flange and shaft extension, rear resolver mount, optional holding brake cavity, no internal fan.
Working Principle
The servo amplifier supplies three-phase current to the stator windings. The permanent-magnet rotor creates a fixed magnetic field. The resolver detects rotor position and speed. The drive regulates current vectors to command torque, speed or position. No external forced air is required because the ribbed housing dissipates heat by convection.
Installation Requirements
Fix the motor to a rigid flange with correct shaft centerline alignment. Use couplings rated for 5.7 Nm continuous and 6.7 Nm stall. Keep clearance around the ribbed housing for air circulation. Separate resolver and power cables with shielded wiring. Set the servo drive for 330 V, 170 Hz and resolver feedback before energizing.
Usage Precautions
Do not exceed 19 A drive current for extended periods. Verify brake presence because not all MDSKSRS071-03 units include a brake. Check rotor magnet temperature limits under high cyclic load. Confirm the Lenze nameplate if the procurement document shows Mitsubishi, because the part number family is Lenze MDSKS.
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