Mobile robot drive trains
TT-size 120:1 gearmotor with a built-in quadrature encoder (960 counts per wheel turn) — closed-loop speed and odometry for small robot cars.
Engineering inference
DFRobot
DFRobot TT Motor with Encoder 120:1 6V
DFRobot FIT0450 TT gearmotor with quadrature encoder: 120:1 plastic gearbox, 160 rpm / 0.17 A no-load at 6 V (60 rpm at 3 V), 0.8 kgf·cm stall / 2.8 A, 0.2 kgf·cm rated, 3–7.5 V motor and 4.5–7.5 V Hall encoder giving 8 pulses per motor turn (960 per output turn), 6 wires, −10 to +60 °C, 75.35 × 29.86 × 44.39 mm, 50 g. The robot-car TT motor with odometry.
FIT0450MotorPrice$7.40www.dfrobot.com · in stock
Buy at www.dfrobot.com Overview
Motor essentials
Facts about the complete product. Unknown values remain open design questions.
- Rated voltage
- 6 V
- No-load speed
- 160 RPM
- Stall torque
- 0.07845 N·m
- Gear reduction
- 120:1
- Encoder
- quadrature Hall encoder, 8 PPR at the motor, 960 per output turn
A good fit for
Guidance to help you shortlist. The basis is shown for each recommendation.
No-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)
- 75.35 × 29.86 × 44.39 mm
- Verification
- generated
- Envelope complete
- Yes
Mechanical interface
Mechanical output interface
The motor body, transmission and output shaft have separate roles in a mechanism.
- Motor type
- gearmotor
- Gear reduction
- 120:1
- Body length
- 70.35 mm
- Encoder
- quadrature Hall encoder, 8 PPR at the motor, 960 per output turn
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
- 160 RPM
- No-load current
- 0.17 A
- Stall torque
- 0.07845 N·m
- Stall current
- 2.8 A
- Continuous rated torque
- 0.01961 N·m
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
- Product operating range
- -10 to 60 °C
Mechanical dimensions
Reported product dimensions may exclude protruding components. Unknown height does not establish a complete clearance envelope.
- Length
- 75.35 mm
- Width
- 29.86 mm
- Reported height / thickness
- 44.39 mm
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 |
|---|---|---|---|
| leads6-pin encoder board header (motor ±, A, B, GND, VCC); JST 4-pin encoder cable included | 6 | 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.dfrobot.com
US · USD
$7.40Minimum quantity unknown
- Observed stock
- in stock
- Checked
- Oct 1, 2026, 12:37 PM 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
DFRobot FIT0450 TT motor with encoder — product photo (opens in a new tab)
Manufacturer reference
store og:image
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_max_v, spec.constraints.electrical.supply_voltage_min_v, spec.constraints.electrical.supply_voltage_nominal_v, spec.constraints.thermal.operating_temp_max_c, spec.constraints.thermal.operating_temp_min_c, spec.geometry.body_length_mm, 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.other.weight_g, 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_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_voltage_v, spec.usage.requirements.stall_current_a
sha256 7ce517266dfde0d5288b24d00dbe9e8ae6e02109d3f09e3d8a539dcc99b5f6a7
Supports: offers
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FAQ
DFRobot TT Motor with Encoder 120:1 6V questions
What voltage powers the DFRobot TT Motor with Encoder 120:1 6V?
Supply range 3–7.5 V.
How much does the DFRobot TT Motor with Encoder 120:1 6V cost?
From $7.4 at www.dfrobot.com. Prices are observed unit prices before tax and shipping.
What are the DFRobot TT Motor with Encoder 120:1 6V dimensions?
75.35 × 29.86 × 44.39 mm. A STEP model is available for enclosure fit checks.
Where does this DFRobot TT Motor with Encoder 120:1 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.