Mobile robot drive trains
410 rpm no-load at 6 V and 1.3 kg·cm stall in a 10 × 12 mm body — the standard drive motor for small line-followers and mini-sumo bots; the rear shaft takes a wheel-odometry encoder.
Engineering inference
Pololu
Pololu 75:1 Micro Metal Gearmotor HP 6V
Pololu #2215 75:1 Micro Metal Gearmotor HP 6V (N20 size) with extended rear motor shaft: 410 rpm and 0.10 A no-load at 6 V, 1.3 kg·cm / 1.6 A stall (extrapolated), 1.4 W max output, 40 % peak efficiency, 75.81:1 steel gearbox, 10 × 12 × 25 mm, Ø3 mm × 10 mm D-shaft, two M1.6 face holes, 9.5 g. Ready for a 12 CPR magnetic encoder on the rear shaft.
2215MotorPrice$24.95www.pololu.com · in stock
Buy at www.pololu.com Overview
Motor essentials
Facts about the complete product. Unknown values remain open design questions.
- Rated voltage
- 6 V
- No-load speed
- 410 RPM
- Stall torque
- 0.12749 N·m
- Gear reduction
- 75.81:1
- Shaft diameter
- 3 mm
- Encoder
- none (encoder-compatible extended motor shaft)
A good fit for
Guidance to help you shortlist. The basis is shown for each recommendation.
Grippers and small manipulators
micro gearmotor with 75.81:1 steel gearbox and 1.3 kg·cm extrapolated stall — sized for a small gripper finger or lead-screw jaw.
Engineering inferenceNo-load speed, rated performance and stall limits describe different operating points. A stall specification is not a continuous operating rating.
3D model & CAD
3D model & CAD files
Generated from the datasheet's dimensioned drawing and measured against it. Download the STEP to check fit in your own enclosure.
- Envelope (L × W × H)
- 12 × 10 × 35.6 mm
- Verification
- generated
- Envelope complete
- No — some heights assumed
shaft_flat_len=9 mm assumed: flat length not dimensioned; drawn along most of the 10 mm shaft — 9 mm assumed for the CAD envelope only
Mechanical interface
Mechanical output interface
The motor body, transmission and output shaft have separate roles in a mechanism.
- Motor type
- gearmotor
- Gear reduction
- 75.81:1
- Shaft diameter
- 3 mm
- Body diameter
- 12 mm
- Body length
- 25.6 mm
- Encoder
- none (encoder-compatible extended motor shaft)
Reported body dimensions may exclude the shaft, terminals and other protrusions. Use the manufacturer drawing to establish the complete mounting and clearance envelope.
Specifications
Motor performance
No-load, rated-load and stall figures retain their separate test conditions.
- Rated voltage
- 6 V
- No-load speed
- 410 RPM
- No-load current
- 0.1 A
- Stall torque
- 0.12749 N·m
- Stall current
- 1.6 A
- Continuous rated torque
- 0.02256 N·m
- Rated-load speed
- 340 RPM
- Rated current
- 0.34 A
Stall torque and current are not continuous ratings. Check the duty cycle and starting load when choosing the driver and power supply.
Thermal limits by level
Product operating conditions, chip ambient ratings, package case limits and junction maxima remain separate.
Motor body
Mechanical dimensions
Reported product dimensions may exclude protruding components. Unknown height does not establish a complete clearance envelope.
- Length
- 12 mm
- Width
- 10 mm
- Reported height / thickness
- 35.6 mm
- Mounting hole records
- 2
Attached generated geometry is an approximate envelope. A generated outline does not establish an electrically verified PCB footprint.
Board connectors
| ID / type | Pins | Pitch | Notes |
|---|---|---|---|
| terminalstwo solder tabs on the motor end cap | 2 | Unknown | — |
Complete structured record
Every available field, including details beyond the summaries. Null means the value has not been established.
Sourcing & files
Supplier offers
US / USD is the target market. Observed price and stock are separate from a delivery quote.
www.pololu.com
US · USD
$24.95Minimum quantity unknown
- Observed stock
- in stock
- Checked
- Oct 1, 2026, 07:36 AM UTC
- Delivery estimate
- Not quoted
Observed within the last 24 hours. Confirm the current supplier quote.
Visit supplier (opens in a new tab)Delivery depends on quantity, postal code and shipping method. A dispatch statement such as “ship today” is not an arrival estimate.
Design files and references
Each source keeps its own verification status. Confirm the part revision and file contents before using it in a design.
Datasheet (opens in a new tab)
Manufacturer reference
Pololu micro metal gearmotor with extended motor shaft (shown with a wheel, not included) (opens in a new tab)
Manufacturer reference
inspected: N20-size silver can, brass gearbox plates, rear motor shaft visible; a Pololu wheel is fitted for the photo
STEP (generated from datasheet drawing) — link unavailable
Generated asset
cad_check passed
Generated envelope geometry may also exist for this record. It does not replace manufacturer CAD or a verified electrical land pattern.
Source evidence
Document provenance, retrieval dates and the field groups supported by each source.
Supports: spec.constraints.electrical.supply_voltage_nominal_v, spec.geometry.body_diameter_mm, spec.geometry.body_length_mm, spec.geometry.cad.assumptions, spec.geometry.cad.bbox.height_mm, spec.geometry.cad.bbox.length_mm, spec.geometry.cad.bbox.width_mm, spec.geometry.cad.envelope_complete, spec.geometry.cad.mesh_path, spec.geometry.cad.step_path, spec.geometry.cad.verification, spec.geometry.dimensions.height_mm, spec.geometry.dimensions.length_mm, spec.geometry.dimensions.width_mm, spec.geometry.mounting_holes, spec.geometry.other.weight_g, spec.geometry.shaft_diameter_mm, spec.geometry.shaft_extension_mm, spec.geometry.shaft_profile, spec.provides.features, spec.provides.feedback, spec.provides.gear_ratio, spec.provides.motor_type, spec.provides.no_load_speed_rpm, spec.provides.output_type, spec.provides.rated_speed_rpm, spec.provides.rated_torque_nm, spec.provides.stall_torque_nm, spec.usage.connectors, spec.usage.pinout, spec.usage.pinout_complete, spec.usage.requirements.driver_required, spec.usage.requirements.no_load_current_a, spec.usage.requirements.rated_current_a, spec.usage.requirements.rated_voltage_v, spec.usage.requirements.stall_current_a
sha256 fb949beb58a92c4dff4d6e1849c8989761ddabe3a3224075755ad71561520ed0
Supports: offers
FAQ
Pololu 75:1 Micro Metal Gearmotor HP 6V questions
How much does the Pololu 75:1 Micro Metal Gearmotor HP 6V cost?
From $24.95 at www.pololu.com. Prices are observed unit prices before tax and shipping.
What are the Pololu 75:1 Micro Metal Gearmotor HP 6V dimensions?
12 × 10 × 35.6 mm. A STEP model is available for enclosure fit checks.
Where does this Pololu 75:1 Micro Metal Gearmotor HP 6V data come from?
Every value in this record is traced to a source — 2 documents including the board and chip datasheets — with the page and table cited per value. Unknowns are left explicit, never guessed.