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Mitsubishi MMC-BDP082PNA
Mitsubishi MMC-BDP082PNA

Rexroth MKD071B-035-KG1-KN

Product Name
MKD series digital AC synchronous servo motor with plain shaft, 5 Nm holding brake, resolver absolute feedback and connection box.
Product Introduction
MKD071B-035-KG1-KN is a Bosch Rexroth Indramat MKD synchronous servo motor for medium-duty industrial axes. The 071 frame, B length, 035 winding, integrated brake and resolver with absolute multiturn encoder support accurate positioning, sustained torque and safe holding during power loss.
Category:
Description
Technical Specifications
Motor family: MKD digital AC synchronous servo.
Frame size: 071.
Length: B.
Winding code: 035.
Flange size: 115 mm.
Centering diameter: 95 mm.
Continuous torque at standstill: 8.0 Nm.
Continuous current at standstill: 5.8 A.
Nominal speed: 2500 r/min.
Maximum speed: 3500 r/min depending on drive and load profile.
Torque constant at 20°C: 0.91 Nm/A.
Winding resistance at 20°C: 7.2 ohm.
Winding inductance: 25.3 mH.
Shaft: plain shaft with shaft seal.
Holding brake torque: 5 Nm, released by 24 V DC.
Feedback: resolver with integrated encoder, absolute position detection over more than 4096 revolutions.
Cooling: natural convection and surface cooling, external fan mount optional.
Connection: connection box.
Protection class: IP65.
Weight: approximately 9.0 kg depending on brake and connection options.
Functional Features
Plain sealed shaft suits direct coupling and precision gearboxes.
5 Nm spring-applied electromagnetic brake holds loads during shutdown, emergency stop and power loss.
Resolver absolute multiturn feedback provides stable position data under vibration and noise.
Connection box allows fixed terminal wiring for industrial retrofits.
Natural convection handles standard duty; external fan mounting increases thermal headroom.
IP65 housing resists dust, oil mist and coolant spray.
Application Scenarios
CNC feed and auxiliary axes, packaging machines, printing presses, robotic handling arms, assembly stations, material-transfer systems, indexing tables and medium-load automation requiring 8 Nm-class continuous torque.
Performance Parameters
The motor delivers 8.0 Nm continuous standstill torque at 5.8 A and 0.91 Nm/A torque constant. Rated 2500 r/min supports constant-speed machining and conveying, while 3500 r/min maximum enables accelerated cyclic moves within drive limits. The 5 Nm brake secures stationary axes. Resolver absolute feedback maintains position through power interruptions.
Material Composition
Cast or aluminum servo housing, copper stator windings, permanent-magnet rotor assembly, steel plain shaft with seal, spring-applied electromagnetic brake, resolver and encoder electronics, terminal connection box, insulated conductors.
Structural Characteristics
071 frame with 115 mm flange and 95 mm centering diameter, plain shaft extension with seal, rear or side connection box, integrated brake stack, resolver compartment, ribbed or smooth surface for convection cooling, provisions for optional external blower.
Working Principle
The servo amplifier generates three-phase current according to the control loop. The permanent-magnet rotor tracks the stator field. The resolver detects shaft position and speed, and the integrated encoder electronics produce absolute multiturn data. The drive regulates current, speed and position. The brake engages mechanically when 24 V DC release power is removed and holds the shaft through spring force.
Installation Requirements
Mount the motor on a 115 mm flange with 95 mm centering pilot and aligned shaft centerline. Size couplings for 8.0 Nm continuous and transient peak torque. Connect the brake to the specified 24 V DC supply through controlled release logic. Use the connection box with properly sized conductors and shielded resolver cables. Provide cabinet ventilation for natural convection or install the optional external fan for higher duty.
Usage Precautions
Do not use the 5 Nm brake for continuous active stopping; it is a holding brake. Verify brake release voltage and timing before automatic restart. Prevent overtemperature by respecting 5.8 A continuous current and ambient limits. Inspect shaft seal, brake gap and resolver wiring on scheduled maintenance. Confirm 035 winding and absolute resolver parameters in the drive before commissioning.
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