Overview

The Rexroth (Indramat) MKD041B‑144‑GG1‑KN is a compact‑frame high‑performance permanent‑magnet synchronous servo motor, original part number R9112615781688阿…. It belongs to the classic MKD motor platform widely paired with Rexroth IndraDrive drives.Order‑code breakdown:

• MKD041B: Frame size 041, B‑length stator stack
• 144: Winding code defining motor voltage‑speed‑torque characteristics
• GG: Resolver position feedback; smooth keyless shaft
• 1: Integrated holding brake
• KN: Side‑B terminal box connection orientation, standard mechanical variantIndramat P…

This motor delivers high torque‑to‑volume ratio, fast dynamic response and IP65 shaft‑side protection. Widely deployed on legacy machine‑tool, packaging and material‑handling equipment. It is a critical MRO spare for existing production‑line maintenance and retrofit projects.

Core Features & Technical Highlights

• Full part number Rexroth MKD041B‑144‑GG1‑KN, PN: R9112615781688阿…
• Motor type: Brushless permanent‑magnet synchronous servo motor
• Feedback: Resolver for rugged position‑speed sensing, well‑suited for high‑vibration industrial environmentsIndramat P…
• Shaft: Smooth keyless shaft; integrated holding brake (‑1 suffix) for static load holding when power is removed
• Mechanical: 82 mm flange, centering diameter 50 mm; side‑mount terminal box; IP65 shaft‑end protection; insulation class FIndramat U…
• Cooling: Natural convection; optimized for cyclic dynamic motion profiles
• Operating ambient temperature: 0 °C ~ +40 °C; storage‑20 °C ~ +80 °C
• Compatibility note: Must pair with matching Rexroth Indra‑series servo drives. The winding code 144, resolver feedback, brake presence and keyless shaft are non‑interchangeable parameters. Cannot directly swap with GG0 (no‑brake) or KP‑key‑shaft variants without mechanical and drive‑parameter adjustmentsIndramat P….

 

Typical Application Scenarios

Rexroth MKD041B‑144‑GG1‑KN servo motors are used in machine‑tools, packaging lines, printing machinery, automated assembly stations and material‑handling automation. The integrated holding brake provides safety‑holding for vertical‑axis applications to prevent load dropping during power loss.Common field‑failure symptoms: brake release failure, resolver signal drift or loss, motor overheating, shaft‑seal oil leakage, intermittent motion‑tracking errors. A defective motor causes axis following errors, axis runaway risk or loss of vertical‑axis holding capacity. Maintenance teams stock genuine MKD041B‑144‑GG1‑KN spares to minimize production‑line downtime without redesigning machine mechanical structure and drive configuration.

 

Compatibility & Field Maintenance Guidance

When sourcing spare parts, strictly confirm full identifier Rexroth MKD041B‑144‑GG1‑KN. Verify winding code 144, resolver feedback, holding brake, keyless smooth shaft and terminal‑box orientation. Mismatched variants will lead to mechanical fit‑problems or drive‑parameter incompatibility.Installation and commissioning shall follow Rexroth MKD‑series official service documentation. After replacement, technicians perform motor pole‑identification, set drive parameters matching winding‑code 144, test brake engage/release function, verify axis positioning accuracy and dynamic motion performance. Preventive maintenance includes inspecting shaft‑seal condition, cable‑gland tightness and brake wear during machine‑outage cycles.Only genuine Rexroth MKD041B‑144‑GG1‑KN guarantees correct resolver‑signal output, reliable holding‑brake performance and full drive‑system compatibility. Untested refurbished or counterfeit units bring risks of positioning‑error, brake failure and unexpected axis‑movement hazards.

 

Summary

The Rexroth MKD041B‑144‑GG1‑KN is a brake‑equipped resolver‑feedback synchronous servo motor for high‑dynamic industrial automation axes. Exact full‑part‑number matching, correct drive‑parameter setup and post‑replacement brake‑and‑motion‑performance validation are essential for safe and reliable machine‑operation.Tags: Rexroth MKD041B‑144‑GG1‑KN, Indramat MKD servo motor, R911261578, brake‑equipped synchronous servo motor, Rexroth automation spare part