Product code
- Current Page Value
- MPM-MICRO-DC-PLANETARY-GEAR-MOTOR
- Buyer Use
- Page-level product family identifier used to keep RFQ, drawing, sample, and quote communication aligned.
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Micro DC Planetary Gear Motor
Compact brushed DC planetary gear motors from 6mm to 42mm for OEM teams that need practical torque, simple control electronics, configurable ratios, and a clear path from sample validation to repeat production.
Target Buyer:Best for high-volume OEMs that need reliable cost-performance motion, short sample cycles, and enough customization flexibility to lock the shaft, voltage, gear material, and cable interface before tooling.
OEM pricing, sample terms, freight, and lead time are confirmed by RFQ after drawings, quantity, destination, and validation scope are reviewed.
Commercial Availability
RFQ Terms for Micro DC Planetary Gear Motor
Unit pricing, sample terms, freight, and lead time are confirmed by RFQ after drawings, quantity, destination, annual volume, and validation scope are reviewed.
| Field | Current Page Value | Buyer Use |
|---|---|---|
| Product code | MPM-MICRO-DC-PLANETARY-GEAR-MOTOR | Page-level product family identifier used to keep RFQ, drawing, sample, and quote communication aligned. |
| Commercial path | RFQ-based OEM quotation | No public checkout price is shown because winding, ratio, gear material, shaft, validation evidence, freight, and volume change the final unit cost. |
| Offer status | Platform-dependent availability | Standard micro planetary motor platforms are reviewed for custom sampling and production fit before quote confirmation. |
| Condition | New OEM components and assemblies | Samples and production lots are treated as new industrial components tied to the approved drawing revision and buyer file. |
| Valid from | August 5, 2026 | This page describes the current RFQ route; written quotations state their own price validity, incoterm, and lead-time assumptions. |
| Region | Worldwide RFQ support | Destination, compliance needs, packing notes, and shipping route are confirmed during quotation instead of embedded as a fixed retail shipping rate. |
| Quote currency | USD | Export quotations are usually discussed in USD unless a buyer requests another quotation currency. |
Commercial path
- Current Page Value
- RFQ-based OEM quotation
- Buyer Use
- No public checkout price is shown because winding, ratio, gear material, shaft, validation evidence, freight, and volume change the final unit cost.
Offer status
- Current Page Value
- Platform-dependent availability
- Buyer Use
- Standard micro planetary motor platforms are reviewed for custom sampling and production fit before quote confirmation.
Condition
- Current Page Value
- New OEM components and assemblies
- Buyer Use
- Samples and production lots are treated as new industrial components tied to the approved drawing revision and buyer file.
Valid from
- Current Page Value
- August 5, 2026
- Buyer Use
- This page describes the current RFQ route; written quotations state their own price validity, incoterm, and lead-time assumptions.
Region
- Current Page Value
- Worldwide RFQ support
- Buyer Use
- Destination, compliance needs, packing notes, and shipping route are confirmed during quotation instead of embedded as a fixed retail shipping rate.
Quote currency
- Current Page Value
- USD
- Buyer Use
- Export quotations are usually discussed in USD unless a buyer requests another quotation currency.
Architecture & Technical Overview
Capability Highlights
- High power density
- Configurable voltage and speed
- Robust planetary gearhead
Typical Applications
- Smart Locks
- Valve Actuators
- Consumer Electronics
- Battery-powered latches and dispensers
- Compact industrial adjusters
Engineering Focus
- Torque-speed curve matching
- Gear material selection (plastic vs metal)
- Noise and vibration control
- Brush life review against duty cycle and stall events
- Low-voltage start torque and current-limit coordination
OEM Buyer Decision Path
Qualify the Product Across Engineering, Procurement, and QA
Product selection usually fails when only one team reviews the motor. Use this path to connect mechanical fit, quote scope, validation evidence, and production handoff before sample approval.
| Buyer Role | Decision Check | Page Evidence | Next Step |
|---|---|---|---|
| Design Engineering | Envelope, output speed, continuous torque, stall condition, backlash/noise limit, shaft datum, and cable route. | Performance window, engineering focus, customization map, CAD/STEP request path, and material review. | Request CAD / STEP |
| Procurement | Prototype quantity, annual volume, destination, sample timing, quote scope, and approved supplier workflow. | RFQ checklist, email template, WhatsApp handoff, and quote caveat before sample pricing. | Send RFQ |
| Quality | Incoming CTQ, drawing revision, torque-speed test condition, noise/backlash method, and lot traceability expectation. | Risk controls, validation scope, buyer file package, and quality evidence review path. | Review Quality |
| OEM Program | NPI stage, frozen BOM fields, custom tooling boundary, packing rules, revision control, and production handoff. | OEM customization options, supplier workflow, export coordination, and related application routing. | OEM Workflow |
Design Engineering
- Decision Check
- Envelope, output speed, continuous torque, stall condition, backlash/noise limit, shaft datum, and cable route.
- Page Evidence
- Performance window, engineering focus, customization map, CAD/STEP request path, and material review.
- Next Step
- Request CAD / STEP
Procurement
- Decision Check
- Prototype quantity, annual volume, destination, sample timing, quote scope, and approved supplier workflow.
- Page Evidence
- RFQ checklist, email template, WhatsApp handoff, and quote caveat before sample pricing.
- Next Step
- Send RFQ
Quality
- Decision Check
- Incoming CTQ, drawing revision, torque-speed test condition, noise/backlash method, and lot traceability expectation.
- Page Evidence
- Risk controls, validation scope, buyer file package, and quality evidence review path.
- Next Step
- Review Quality
OEM Program
- Decision Check
- NPI stage, frozen BOM fields, custom tooling boundary, packing rules, revision control, and production handoff.
- Page Evidence
- OEM customization options, supplier workflow, export coordination, and related application routing.
- Next Step
- OEM Workflow
Key Evaluation Matrix
| Metric | Typical Range | Why It Matters |
|---|---|---|
| Diameter Range | 6mm - 42mm | Determines the physical space required for integration. |
| Continuous Torque | 0.1 Nm - 5.0 Nm | Dictates the maximum safe operational load before gear wear accelerates. |
| Standard Backlash | ≤ 3.0 Degrees | Affects positioning accuracy in reversing applications. |
Diameter Range
- Typical Range
- 6mm - 42mm
- Why It Matters
- Determines the physical space required for integration.
Continuous Torque
- Typical Range
- 0.1 Nm - 5.0 Nm
- Why It Matters
- Dictates the maximum safe operational load before gear wear accelerates.
Standard Backlash
- Typical Range
- ≤ 3.0 Degrees
- Why It Matters
- Affects positioning accuracy in reversing applications.
Ratio & Performance Window
Reference Performance Table by Frame and Ratio
These RFQ reference windows translate the planning ranges into an engineering shortlist. Final datasheet values are confirmed by winding, ratio, gear material, load, duty cycle, current limit, and test condition before sample approval.
| Frame / OD | Rated Voltage | Ratio Range | No-load RPM | Rated-load RPM | Continuous Output Torque | Stall Torque | Efficiency | Application Fit |
|---|---|---|---|---|---|---|---|---|
| 6mm micro planetary | 3-6V DC | 5:1-700:1 | Up to 2500 RPM at 6V motor reference | Set by ratio and load; confirm output RPM in RFQ | 5-480 g.cm reference window | Approx. 10.8 mN.m 6mm reference; verify by winding | About 90% single stage; lower with added stages | Endoscope tools, optical focus, micro servos |
| 10/12mm N20/N30 class | 3-12V DC | 5:1-1000:1 | Motor winding dependent; quote from target output RPM | Shortlist by actuation time and load curve | 100 g.cm-1.5 kg.cm reference window | Confirm against jam and end-stop limit | Stage count and gear material dependent | Smart locks, PTZ cameras, dispensers |
| 16/22mm mid-load class | 6-24V DC | 4:1-1500:1 | Motor platform dependent; avoid no-load-only selection | Calculated from loaded motor speed and selected ratio | 0.5-5.5 Nm reference window | Confirm peak load and stall duration before sample | Lower at high ratios; thermal review required | Valves, robot vacuum modules, auto mechanisms |
| 36/42mm heavy-duty class | 12-48V DC or BLDC candidate | 3:1-512:1 | BLDC platform reviewed for sustained output speed | Defined by wheel or actuator speed and load curve | 9.3-35 Nm reference window | Needs gearbox, shaft, and current-limit review | Best with lower stage count and BLDC drive | AGV wheels, lawn mowers, heavy actuators |
6mm micro planetary
- Rated Voltage
- 3-6V DC
- Ratio Range
- 5:1-700:1
- No-load RPM
- Up to 2500 RPM at 6V motor reference
- Rated-load RPM
- Set by ratio and load; confirm output RPM in RFQ
- Continuous Output Torque
- 5-480 g.cm reference window
- Stall Torque
- Approx. 10.8 mN.m 6mm reference; verify by winding
- Efficiency
- About 90% single stage; lower with added stages
- Application Fit
- Endoscope tools, optical focus, micro servos
10/12mm N20/N30 class
- Rated Voltage
- 3-12V DC
- Ratio Range
- 5:1-1000:1
- No-load RPM
- Motor winding dependent; quote from target output RPM
- Rated-load RPM
- Shortlist by actuation time and load curve
- Continuous Output Torque
- 100 g.cm-1.5 kg.cm reference window
- Stall Torque
- Confirm against jam and end-stop limit
- Efficiency
- Stage count and gear material dependent
- Application Fit
- Smart locks, PTZ cameras, dispensers
16/22mm mid-load class
- Rated Voltage
- 6-24V DC
- Ratio Range
- 4:1-1500:1
- No-load RPM
- Motor platform dependent; avoid no-load-only selection
- Rated-load RPM
- Calculated from loaded motor speed and selected ratio
- Continuous Output Torque
- 0.5-5.5 Nm reference window
- Stall Torque
- Confirm peak load and stall duration before sample
- Efficiency
- Lower at high ratios; thermal review required
- Application Fit
- Valves, robot vacuum modules, auto mechanisms
36/42mm heavy-duty class
- Rated Voltage
- 12-48V DC or BLDC candidate
- Ratio Range
- 3:1-512:1
- No-load RPM
- BLDC platform reviewed for sustained output speed
- Rated-load RPM
- Defined by wheel or actuator speed and load curve
- Continuous Output Torque
- 9.3-35 Nm reference window
- Stall Torque
- Needs gearbox, shaft, and current-limit review
- Efficiency
- Best with lower stage count and BLDC drive
- Application Fit
- AGV wheels, lawn mowers, heavy actuators
Sample Acceptance Plan
Turn Product Selection Into Pass/Fail Checks
Before a motor family becomes a sample order, sales engineering converts the RFQ into acceptance checks for engineering, procurement, and quality. These checks keep CAD/STEP release, prototype approval, and repeat production tied to the same specification baseline.
| Workstream | Buyer Question | Evidence to Prepare | Pass Signal |
|---|---|---|---|
| Voltage and winding fit | Will the brushed motor hold target speed without exceeding the driver current limit? | Nominal voltage, available current limit, target loaded RPM, duty cycle, and any previous torque-current data. | Rated-load speed, current draw, and temperature rise stay inside the approved duty window. |
| Ratio and torque point | Which ratio gives enough output torque without making the mechanism too slow? | Target output RPM, continuous torque, stall or jam torque, load curve, and envelope limit. | The ratio table shows torque reserve at loaded speed with no overload-only operating point. |
| Shaft and gear material | Can the shaft and first gear stages survive the real load and mounting method? | Shaft drawing, coupling method, radial or axial load, shock events, and POM/MIM/metal preference. | Shaft geometry, gear material, and bearing support are frozen before sample drawing release. |
| Noise and life check | Will the sample stay acceptable after repeated lock, valve, or consumer-device cycles? | Cycle count, on/off timing, ambient temperature, enclosure condition, and acoustic target if any. | Noise, current drift, and gearbox wear remain acceptable after the buyer-defined cycle test. |
Voltage and winding fit
- Buyer Question
- Will the brushed motor hold target speed without exceeding the driver current limit?
- Evidence to Prepare
- Nominal voltage, available current limit, target loaded RPM, duty cycle, and any previous torque-current data.
- Pass Signal
- Rated-load speed, current draw, and temperature rise stay inside the approved duty window.
Ratio and torque point
- Buyer Question
- Which ratio gives enough output torque without making the mechanism too slow?
- Evidence to Prepare
- Target output RPM, continuous torque, stall or jam torque, load curve, and envelope limit.
- Pass Signal
- The ratio table shows torque reserve at loaded speed with no overload-only operating point.
Shaft and gear material
- Buyer Question
- Can the shaft and first gear stages survive the real load and mounting method?
- Evidence to Prepare
- Shaft drawing, coupling method, radial or axial load, shock events, and POM/MIM/metal preference.
- Pass Signal
- Shaft geometry, gear material, and bearing support are frozen before sample drawing release.
Noise and life check
- Buyer Question
- Will the sample stay acceptable after repeated lock, valve, or consumer-device cycles?
- Evidence to Prepare
- Cycle count, on/off timing, ambient temperature, enclosure condition, and acoustic target if any.
- Pass Signal
- Noise, current drift, and gearbox wear remain acceptable after the buyer-defined cycle test.
Selection-Ready Product Data
Build the Ratio Table Before Sample Approval
Public diameter pages are only the starting point. For RFQ review, sales engineering confirms rated voltage, no-load RPM, rated-load RPM, continuous output torque, stall torque, current, efficiency, and gear ratio against your mechanism before releasing drawings or sample pricing.
| Performance Field | Buyer Input | How It Shapes the Quote |
|---|---|---|
| Rated voltage and current limit | 3V, 6V, 12V, 24V, or buyer-defined driver limit | Selects the winding, thermal margin, stall-current boundary, and battery or adapter fit. |
| No-load speed and loaded output speed | Motor RPM, target output RPM, and acceptable speed tolerance | Narrows the gear ratio and keeps the prototype inside the required actuation time. |
| Continuous output torque and stall torque | Working torque, peak load, jam condition, and stall duration | Checks gear material, shaft support, carrier strength, and safety margin before sampling. |
| Gear ratio and efficiency target | Known ratio, output RPM target, or torque-speed curve from the mechanism | Builds the ratio table used to compare speed, torque, current, efficiency, and heat rise. |
| Duty cycle and life target | On/off sequence, cycles per day, lifetime cycles, ambient temperature | Defines grease, gear stack, winding temperature, brush life, and sample validation scope. |
| Noise and backlash limit | dB limit, measurement distance, arcmin or degree target, load fixture | Separates POM, hybrid, metal, and low-backlash options before the CAD exchange. |
Rated voltage and current limit
- Buyer Input
- 3V, 6V, 12V, 24V, or buyer-defined driver limit
- How It Shapes the Quote
- Selects the winding, thermal margin, stall-current boundary, and battery or adapter fit.
No-load speed and loaded output speed
- Buyer Input
- Motor RPM, target output RPM, and acceptable speed tolerance
- How It Shapes the Quote
- Narrows the gear ratio and keeps the prototype inside the required actuation time.
Continuous output torque and stall torque
- Buyer Input
- Working torque, peak load, jam condition, and stall duration
- How It Shapes the Quote
- Checks gear material, shaft support, carrier strength, and safety margin before sampling.
Gear ratio and efficiency target
- Buyer Input
- Known ratio, output RPM target, or torque-speed curve from the mechanism
- How It Shapes the Quote
- Builds the ratio table used to compare speed, torque, current, efficiency, and heat rise.
Duty cycle and life target
- Buyer Input
- On/off sequence, cycles per day, lifetime cycles, ambient temperature
- How It Shapes the Quote
- Defines grease, gear stack, winding temperature, brush life, and sample validation scope.
Noise and backlash limit
- Buyer Input
- dB limit, measurement distance, arcmin or degree target, load fixture
- How It Shapes the Quote
- Separates POM, hybrid, metal, and low-backlash options before the CAD exchange.
Customization Options
Match the Motor to the Mechanical Boundary
The useful custom scope is normally around the shaft, gearbox stack, feedback, cable exit, connector, and buyer file package. These options should be fixed before tooling, CAD exchange, or pilot builds.
| Custom Area | Common Options | RFQ Signal |
|---|---|---|
| Output shaft and mounting | D-cut, flat, threaded, cross-drilled, keyway, custom length, flange, bearing support. | Attach shaft datum, mating part drawing, radial/axial load direction, and installation sequence. |
| Gear material and backlash | POM, MIM, machined metal, hybrid stages, grease selection, low-backlash build review. | State torque peaks, reversing frequency, noise target, temperature, and life requirement. |
| Feedback and control | Encoder, Hall signal, EMI suppression, pinout, driver match, current-limit review. | Share CPR, signal voltage, controller type, cable route, connector drawing, and EOL test needs. |
| Cable, connector, and assembly | Lead wire length, connector model, cable exit, strain relief, bracket, harness, module assembly. | Include enclosure envelope, bend radius, pull-force concern, label rules, and packing notes. |
| Compliance and buyer file | RoHS/REACH file, material note, drawing revision, sample test report, lot traceability. | Confirm destination, regulated-market expectations, incoming inspection plan, and annual volume. |
Output shaft and mounting
- Common Options
- D-cut, flat, threaded, cross-drilled, keyway, custom length, flange, bearing support.
- RFQ Signal
- Attach shaft datum, mating part drawing, radial/axial load direction, and installation sequence.
Gear material and backlash
- Common Options
- POM, MIM, machined metal, hybrid stages, grease selection, low-backlash build review.
- RFQ Signal
- State torque peaks, reversing frequency, noise target, temperature, and life requirement.
Feedback and control
- Common Options
- Encoder, Hall signal, EMI suppression, pinout, driver match, current-limit review.
- RFQ Signal
- Share CPR, signal voltage, controller type, cable route, connector drawing, and EOL test needs.
Cable, connector, and assembly
- Common Options
- Lead wire length, connector model, cable exit, strain relief, bracket, harness, module assembly.
- RFQ Signal
- Include enclosure envelope, bend radius, pull-force concern, label rules, and packing notes.
Compliance and buyer file
- Common Options
- RoHS/REACH file, material note, drawing revision, sample test report, lot traceability.
- RFQ Signal
- Confirm destination, regulated-market expectations, incoming inspection plan, and annual volume.
Evidence Pack Before Sampling
Evidence Pack to Request Before Sampling
These files are normally reviewed by request rather than downloaded instantly. Confirm the scope early so drawings, sample data, quality records, and production notes match the same motor revision.
| Evidence Item | What to Request | Why It Matters | Route |
|---|---|---|---|
| CAD / STEP baseline | Outer diameter, length, shaft geometry, flange datum, connector clearance, and mating-part constraints. | Prevents a mechanically suitable motor from failing because of envelope, shaft, or mounting mismatch. | CAD request |
| Torque-speed-current window | Rated voltage, no-load speed, rated-load speed, continuous torque, stall torque, current limit, and duty cycle. | Separates reference catalog windows from the sample value set that purchasing and engineering can approve. | RFQ template |
| Inspection and test evidence | Dimensional CTQ, gear ratio check, no-load current, load test, noise/backlash method, and final inspection record. | Lets the buyer define what must be proven before incoming inspection, pilot build, or supplier approval. | Quality review |
| Gear material and backlash route | POM, hybrid, or metal stage choice, grease condition, reversing motion, temperature, shock load, and noise target. | Aligns durability, acoustic behavior, backlash, cost, and life expectation before the sample BOM is frozen. | Material guide |
| OEM handoff package | Drawing revision, cable/connector rules, label and packing notes, destination, compliance file needs, and annual volume. | Turns a selected sample into a production-ready supplier package with fewer revision loops. | OEM workflow |
CAD / STEP baseline
- What to Request
- Outer diameter, length, shaft geometry, flange datum, connector clearance, and mating-part constraints.
- Why It Matters
- Prevents a mechanically suitable motor from failing because of envelope, shaft, or mounting mismatch.
- Route
- CAD request
Torque-speed-current window
- What to Request
- Rated voltage, no-load speed, rated-load speed, continuous torque, stall torque, current limit, and duty cycle.
- Why It Matters
- Separates reference catalog windows from the sample value set that purchasing and engineering can approve.
- Route
- RFQ template
Inspection and test evidence
- What to Request
- Dimensional CTQ, gear ratio check, no-load current, load test, noise/backlash method, and final inspection record.
- Why It Matters
- Lets the buyer define what must be proven before incoming inspection, pilot build, or supplier approval.
- Route
- Quality review
Gear material and backlash route
- What to Request
- POM, hybrid, or metal stage choice, grease condition, reversing motion, temperature, shock load, and noise target.
- Why It Matters
- Aligns durability, acoustic behavior, backlash, cost, and life expectation before the sample BOM is frozen.
- Route
- Material guide
OEM handoff package
- What to Request
- Drawing revision, cable/connector rules, label and packing notes, destination, compliance file needs, and annual volume.
- Why It Matters
- Turns a selected sample into a production-ready supplier package with fewer revision loops.
- Route
- OEM workflow
Gear Material Review
Confirm POM, Hybrid, or Metal Stages Before Prototype Approval
Use the material guide to align noise, torque density, stall load, wear, grease, and backlash expectations before the sample BOM is frozen.
CAD / STEP Request
Request Outline Drawings Before You Freeze the Mechanical Design
Share the mating envelope and target duty data so sales engineering can confirm whether an existing outline drawing, STEP/IGES file, or custom shaft and flange proposal is suitable for your project.
1
Installation envelope, mounting pattern, shaft interface, and cable exit.
2
Voltage, loaded speed, torque, gear ratio, duty cycle, noise, and backlash limits.
3
Preferred CAD format, drawing revision, prototype quantity, destination, and compliance notes.
Fields engineering checks before sharing a model
- Product fit
- Diameter, gearbox length, motor family, shaft style, flange pattern, and cable or connector exit.
- Performance target
- Voltage, loaded speed, continuous torque, peak or stall torque, ratio, duty cycle, life, noise, and backlash.
- Mechanical interface
- Mating drawing revision, installation clearance, radial or axial load, tolerance priority, and assembly sequence.
- Release package
- 2D outline, STEP/IGES envelope, custom shaft/flange review, datasheet values, and quality evidence scope.
Useful before CAD freeze
CAD files are shared by project fit and revision status. For custom shafts, flanges, cable routing, or gearbox interfaces, attach the mating drawing so the first CAD exchange uses the correct mechanical boundary.
RFQ Checklist
- Define target torque and speed
- Specify maximum outer diameter (OD)
- Confirm duty cycle (continuous vs intermittent)
- Provide nominal voltage, allowable current, and battery voltage drop
- Share shaft, flange, cable exit, and connector requirements
- State estimated annual volume
Risk Controls
- Gear wear under shock load: Specify metal gears (powder metallurgy or machined steel) for initial stages.
- Radial bearing failure: For belt drives or heavy offset loads, we integrate dual ball bearings on the output shaft.
- Lubricant starvation: We review duty cycle, load, and temperature before selecting higher-viscosity synthetic grease for continuous or high-duty operation.
- Underspecified current limit creates inconsistent field behavior: Voltage range, driver current limit, low-battery start condition, and stall cutoff should be frozen with the motor ratio before pilot approval.
Product Gallery
Buyer FAQ
Can I customize the output shaft?
Yes, we support D-cut, threaded, cross-drilled, and custom length shafts based on your CAD. No minimum tooling fee for standard variations.
What is the typical lead time for a prototype?
For standard DC configurations, samples are usually dispatched in 7-10 working days after specification approval.
Do you offer planetary gearboxes with POM (plastic) gears?
Yes, for noise-sensitive device applications, POM or hybrid gear stages can be reviewed to help reduce acoustic noise.
What should be included in a DC planetary motor RFQ?
Send target output RPM, continuous and peak torque, voltage range, current limit, duty cycle, shaft drawing, noise target, life target, sample quantity, and expected annual volume.
Related Resources
Product Qualification Review
Ready for a Product-Specific OEM Review?
Send the target size, voltage, torque, speed, ratio, quantity, drawing status, and validation concerns. Sales engineering can then confirm whether this product family is the right starting point or whether another frame, gear material, or OEM assembly route is safer.
WhatsApp: WhatsApp Engineering Support. Email: [email protected].
Inquiry Email
Include OD/length, voltage, torque, loaded speed, ratio, drawings, quantity, and destination.
Instant Chat
WhatsApp Engineering Support
Fast channel for clarifying specs, drawings, and sample timing.