DC31-00124A Samsung MOTOR BLDC Assembly STATOR;COM2000P 1200RPM OEM is a brushless DC (BLDC) motor stator assembly specified for a COM2000P motor with a nominal 1200 RPM rating and supplied as an original equipment manufacturer (OEM) component. As the stationary electromagnetic element of a BLDC motor, the stator comprises the laminated iron core, wound phase coils, insulation, and the mounting structure that secures the motor within the appliance. the part designation conveys both the OEM origin and the intended electrical/mechanical characteristics used by service and parts personnel.
within an appliance the stator works together with the rotor, the motor controller (inverter), position sensors or encoder feedback, and the driven mechanical load to convert electrical commutation into controlled torque and speed. Typical interfaces include three-phase power leads or connector pins to the control board, mechanical mounting points that transfer load to the appliance chassis, and thermal paths for heat dissipation.The stator’s winding configuration, insulation class and mounting geometry determine its electrical behavior, thermal limits and compatibility with the inverter firmware and closed-loop control used in applications such as pumps, blowers, drum drives and other motorized functions in household and commercial equipment.
In this article readers can expect a technical review of the stator’s function and construction, guidance on how to verify physical and electrical compatibility with replacement parts, common failure symptoms (for example motor failing to start, reduced torque or speed, increased vibration or excessive heat, burned insulation or open/shorted windings), practical troubleshooting approaches (visual inspection, continuity and resistance checks, insulation testing, driver and sensor verification) and considerations for safe replacement (matching part number and electrical specifications, correct mechanical fitment, connector pinout and torque requirements). The discussion is intended to equip technicians, engineers and informed appliance owners with the diagnostic context needed to assess stator-related faults and to plan a controlled replacement or repair in accordance with the appliance manufacturer’s service procedures.
Table of Contents
- function and Role of the Part: magnetic, structural and thermal responsibilities of the BLDC stator assembly
- How the DC31-00124A Samsung MOTOR BLDC assembly STATOR;COM2000P 1200RPM OEM Works Inside the Appliance: winding topology, electrical interfaces and control interactions
- Common Failure Symptoms and Measurable Fault Indicators: vibration, electrical imbalance, insulation degradation and thermal anomalies
- Replacement Considerations and installation Procedures: mechanical fitment, connector pinout, torque specs and commissioning checks
- Q&A
- Insights and Conclusions
Function and Role of the Part: magnetic, structural and thermal responsibilities of the BLDC stator assembly
The DC31-00124A Samsung MOTOR BLDC Assembly STATOR;COM2000P 1200RPM OEM is the stationary electromagnetic assembly that creates the controlled rotating magnetic field for the motor. The stator’s laminated iron core and concentrated/distributed windings produce the magnetomotive forces that interact with the rotor’s permanent magnets to generate torque; the winding configuration, phase resistance and inductance determine back-EMF shape, commutation timing and torque ripple behavior under the COM2000P drive profile. As an OEM replacement, the part’s flange, bore, and connector locations must match the original housing and sensor/encoder interfaces so the controller’s electronics can correctly sequence the phases and read any position feedback. Proper electrical continuity, insulation integrity and phase symmetry are essential to predictable motor performance and to avoid excessive current draw or mis-timing that would increase noise or reduce efficiency.
- Common symptoms of stator issues: elevated winding temperature, asymmetric phase resistance, increased vibration or audible cogging.
- Practical checks: measure phase-to-phase resistance and insulation resistance,inspect laminations and varnish for thermal degradation,verify mounting alignment and air-gap uniformity.
Structurally, the stator maintains precise air-gap geometry and resists mechanical stresses from rotor imbalance and housing loads; the lamination stack minimizes eddy-current losses while the coil forms and retainers hold windings against centrifugal and vibrational forces. Thermally, the stator is the primary path for heat generated in the copper windings to exit to the motor frame and ambient surroundings-thermal conduction through the bobbin, impregnation varnish and core, plus any forced convection paths, set the steady-state operating temperature and allowable duty cycle. In service, technicians should expect that degraded insulation, loose clamps or varnish cracks reduce heat transfer and accelerate winding aging; typical repair diagnostics for this stator include winding-resistance comparison between phases, insulation-resistance testing after disassembly, and visual inspection for burning or delamination that would indicate thermal overstress.
| Item | Description |
|---|---|
| Part | DC31-00124A Samsung MOTOR BLDC Assembly STATOR;COM2000P 1200RPM OEM |
| Function | Stationary magnetic core and windings that generate torque and transfer heat to motor housing |
| Service checks | phase resistance,insulation resistance,visual lamination/winding inspection |
How the DC31-00124A Samsung MOTOR BLDC Assembly STATOR;COM2000P 1200RPM OEM Works inside the Appliance: winding topology,electrical interfaces and control interactions
The DC31-00124A Samsung MOTOR BLDC Assembly STATOR;COM2000P 1200RPM OEM is the laminated stator core and coil pack that forms the stationary portion of a three‑phase brushless DC motor used in select Samsung appliances. The winding topology typically consists of coils grouped into three phase sets around the stator stack; this arrangement establishes the spatial polyphase field and determines the motor’s back‑EMF shape, torque constant and phase inductance. The physical design includes the lamination stack, coil insulation, mounting flange and the phase/sensor connector positions, so correct mechanical and electrical matching to the rotor assembly and the appliance’s inverter board is required for reliable operation and expected 1200 RPM performance.
Electrical interfaces are the three phase conductors that feed the inverter and any sensor leads (Hall or encoder) that provide rotor position feedback; some systems use sensorless back‑EMF measurement instead. Control interaction is driven by the inverter’s commutation strategy (six‑step or sinusoidal) and the current-control loop: winding resistance and inductance set the electrical time constant which dictates suitable PWM switching frequency and tuning of the current regulator. In practise, technicians should verify connector pinout, measure phase resistances and inspect insulation/restraint features when replacing this stator to avoid mismatches that can cause overcurrent, poor torque, or unstable speed control; note also that deceleration and regenerative energy must be handled by the drive electronics or a braking resistor.
- Phase winding arrangement: three-phase coils defining torque and back‑EMF.
- Electrical connections: three heavy phase leads plus optional sensor wiring.
- Control implications: determines commutation method, PWM frequency and current-loop tuning.
- Compatibility checks: mounting, pinout and measured winding resistance/inductance.
| Item | Description |
|---|---|
| Winding topology | Three‑phase coil groups (concentrated or distributed) defining phase relationships and back‑EMF |
| interfaces | Three phase leads to inverter; optional sensor leads for rotor position |
| Control-relevant parameters | Winding resistance, inductance and thermal rating that affect PWM selection and current control |
Common Failure Symptoms and Measurable Fault Indicators: vibration, electrical imbalance, insulation degradation and thermal anomalies
The DC31-00124A Samsung MOTOR BLDC Assembly STATOR;COM2000P 1200RPM OEM serves as the stationary magnetic circuit and winding carrier in the BLDC motor assembly; faults in the stator typically present as mechanical and electrical symptoms that affect performance and longevity. Excessive vibration often indicates air‑gap eccentricity,rotor imbalance,or loosened lamination/fasteners,while electrical imbalance between windings (unequal phase currents or voltage drops) can produce torque ripple and audible noise. Insulation degradation shows up as progressive leakage current, partial discharge activity, or reduced megohm readings, and thermal anomalies such as localized overheating reveal cooling path obstructions, high resistive losses in windings, or controller-induced overcurrent. In appliance contexts-washing machine drums, compressor drives, or blower motors-these symptoms translate into increased noise, cycle interruptions, and accelerated bearing wear rather than immediate catastrophic failure.
Diagnosing these issues relies on measurable indicators and targeted tests: vibration analysis (time waveform and frequency spectrum) isolates 1X and harmonic components tied to rotor/stator interaction; electrical measurements (phase current symmetry, voltage balance, current THD, and DC offset) distinguish controller faults from winding faults; insulation testing (megohmmeter, polarization index) and partial discharge detection quantify dielectric health; and infrared thermography or contact thermocouples map thermal anomalies under load. Practical examples include detecting a spectral peak at the motor running frequency that moves with RPM (suggesting mechanical eccentricity), a persistent phase current imbalance under identical control commands (indicating winding or connector issues), a falling insulation resistance after wash cycles (moisture ingress), and a persistent hotspot on the stator end-windings captured by an IR scan. Use the following measurable indicators as diagnostic checkpoints when evaluating the DC31-00124A stator assembly:
- Vibration: RMS amplitude and spectral peaks (1X, harmonics, sidebands) to locate mechanical eccentricity or bearing faults.
- Electrical imbalance: Phase-to-phase current/voltage mismatch, increased THD, and DC offset measurements to detect winding or inverter problems.
- Insulation degradation: Megohm readings,polarization index,and partial discharge activity to assess dielectric integrity.
- Thermal anomalies: IR hotspot mapping and winding/end‑cap temperature gradients to identify poor cooling or high-loss regions.
| Item | Description |
|---|---|
| vibration | Use accelerometers and FFT analysis to identify frequency components tied to rotor speed, bearings, and air‑gap issues. |
| Electrical imbalance | Measure phase currents, voltages, and harmonic content with a power analyzer to detect asymmetry or controller faults. |
| Insulation testing | megohmmeter,polarization index,and partial discharge tests quantify insulation resistance and degradation mechanisms. |
| Thermal inspection | Infrared imaging and thermocouples under steady load locate hotspots and validate cooling effectiveness. |
Replacement Considerations and Installation Procedures: mechanical fitment, connector pinout, torque specs and commissioning checks
The DC31-00124A Samsung MOTOR BLDC Assembly STATOR;COM2000P 1200RPM OEM must be checked for exact mechanical fitment before installation.Confirm that the stator flange, mounting hole pattern, shaft centerline and axial clearance match the original assembly so the rotor and any attached impeller or coupling run concentric without preload on the bearings. Inspect the mating surfaces for burrs, verify shaft runout with a dial indicator, and make sure any retaining clips or alignment dowels are present and correctly engaged; an otherwise correct-stator installed with incorrect axial spacing can cause rubbing, increased vibration, and premature bearing failure. If the replacement stator is used in assemblies that include balancing weights or housings, transfer or verify balance marks to maintain acceptable vibration levels at the rated 1200 RPM speed.
electrical and commissioning items require both pinout verification and controlled torque on fasteners. Confirm the connector pinout against the service schematic: identify the three phase outputs, ground, and any sensor or tachometer signal pins before energizing, and check continuity and insulation resistance (megger) to the stator core.Typical assembly torque guidance for small appliance motors is provided as a reference only – for example, M4 flange bolts are commonly torqued in the 1.5-2.5 N·m range and M5 bolts in the 3.0-4.5 N·m range – but verify exact values in the manufacturer’s service manual. Perform commissioning checks in this order: verify mechanical retention and clearances, apply low-voltage checks, run the motor at no-load to confirm direction and current draw, listen for abnormal noise, and monitor bearing and winding temperature during the initial run-in period.
- Pre-install: compare dimensions, check connector keying, and inspect for damage.
- Mechanical: torque mounting hardware to specified values and confirm axial/radial clearances.
- Electrical: verify pinout, continuity, insulation resistance, and proper control-driver wiring.
- Commissioning: no-load run, direction check, current and vibration measurement, temperature monitoring.
| Item | Description |
|---|---|
| Mounting bolt torque | reference torque ranges (example: M4 = 1.5-2.5 N·m; M5 = 3.0-4.5 N·m). Confirm with service manual. |
| Connector mapping | Identify three phase leads, ground, and any sensor/tach pins before connecting the drive electronics. |
| Commissioning checks | No-load current, rotation direction, vibration/noise, and bearing/winding temperature trends during initial run. |
Q&A
What is the DC31-00124A (COM2000P 1200RPM) motor BLDC stator and what appliances use it?
the DC31-00124A is an OEM brushless DC (BLDC) stator assembly used in some Samsung motor modules (COM2000P) rated around 1200 RPM.It is the stationary winding assembly of the motor and is commonly found in Samsung vacuum cleaners and other small appliance motors that use a compact BLDC drive. To confirm fitment,always match the part number (DC31-00124A) and the appliance model number – appearance and connector type should also match.
How can I tell if the stator is the cause of a motor failure?
Common symptoms of a failing stator include no motor spin or intermittent operation despite correct power to the controller, burning smell or visible insulation damage, and tripping protection on the motor controller. To diagnose, visually inspect for burned windings or damaged insulation, and use a multimeter to check winding continuity and for shorts to the stator core (winding-to-ground). If windings are open, show severely unequal resistances between phases, or have a short to ground, the stator is likely defective.
How do I test the BLDC stator windings with a multimeter?
With the stator disconnected from the controller, measure DC resistance between the three winding terminals (phase-to-phase).The readings should be low and similar for each pair (indicating balanced three-phase windings). Also check resistance from each winding terminal to the stator core/ground – this should read very high (open) indicating no short to ground. If you have access to motor specifications, compare measured values to the datasheet; large discrepancies indicate a problem.
Does this part include the rotor, Hall sensors, or the full motor assembly?
DC31-00124A specifically denotes the stator assembly.It usually does not include the rotor (rotating assembly) or other motor electronics unless the seller specifies a full motor assembly. Some BLDC motors incorporate Hall sensors or sensor rings in the stator assembly – check the part description and connector pinout to see if sensors are present. If you need the rotor or controller, order those items separately or a complete motor assembly.
What tools and skills are required to replace the stator?
Replacing the stator is a moderate-level repair. Basic tools include screwdrivers, hex/Allen keys, pliers, and a multimeter.You may need a torque driver for reassembly and possibly a soldering iron if wires are soldered to the harness. Skills required: safely disassembling the appliance, handling magnetic assemblies (strong magnets in the rotor), identifying wiring/connector orientation, and reassembling without mechanical interference. If you are not comfortable with electrical/mechanical repairs, consider a qualified service technician.
Are there any special precautions during replacement or testing?
Always unplug the appliance before working on the motor. Beware of strong magnets in the rotor which can pinch or attract tools. Keep metal debris away from the windings and bearings. When testing with power applied (for Hall sensor signals or commutation tests), secure the rotor and use insulated test leads; only perform live tests if you understand BLDC drive signals. Avoid using excessive force when fitting the stator or rotor – misalignment can damage bearings or windings.
How do I verify the replacement part is authentic OEM and covered by warranty?
To verify authenticity, compare the part number (DC31-00124A) stamped on the component and packaging, check for Samsung OEM labeling, and buy from authorized Samsung parts dealers or reputable suppliers. Keep your purchase invoice and any warranty paperwork.OEM parts often come in branded packaging and include a manufacturer part number; if in doubt, contact the seller or Samsung parts support for verification and warranty details.
Can I repair the stator windings myself or should I replace the assembly?
Rewinding a stator is a specialized task that requires precise winding techniques, insulation materials, and balancing – it is generally not practical for most appliance technicians or owners. If the windings are damaged, the recommended action is to replace the stator assembly with the correct OEM part (DC31-00124A). Minor issues such as loose connectors or damaged harnesses may be repairable, but winding faults are best handled by replacement to ensure reliability and safety.
Insights and Conclusions
The DC31-00124A Samsung MOTOR BLDC Assembly STATOR (COM2000P 1200RPM OEM) is a critical electrical and mechanical component that produces the rotating magnetic field necessary for brushless DC motor operation. As the stationary part of the motor, the stator directly influences torque production, rotational stability, energy efficiency and overall reliability of the appliance in which it is indeed installed. Using the correct OEM stator helps ensure precise fitment, proper electromagnetic performance and predictable thermal and mechanical behavior throughout the product’s service life.
Because symptoms of stator failure can overlap with other electrical or mechanical faults, accurate diagnosis is essential before committing to replacement. Proper testing-conducted with appropriate diagnostic tools and, where applicable, by trained service personnel-reduces unnecessary parts replacement, protects warranty coverage and prevents secondary damage. When replacement is required, selecting the correct OEM DC31-00124A stator and following manufacturer installation and safety guidelines provides the best outcome in terms of performance restoration, longevity and continued compliance with the original equipment specifications.
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