Robot joints and actuation
smart servo: 9.9 N·m peak at 272.5:1, 39 rpm no-load.
Engineering inference
ROBOTIS
ROBOTIS DYNAMIXEL XH540-W270-T
ROBOTIS DYNAMIXEL XH540-W270-T smart servo: coreless DC motor + 272.5:1 metal gearbox + ARM Cortex-M3 72 MHz controller + 12-bit AS5045 absolute encoder, 9.9 N·m stall / 39 rpm no-load at 12.0 V; Maxon coreless motor, 10.0–14.8 V (12.0 V recommended), TTL bus, 33.5 × 58.5 × 44 mm, 165 g. Current, velocity, position, multi-turn, current-based position and PWM modes.
XH540-W270-TDevelopment boardPrice$620.89robotis.us · in stock
Buy at robotis.us Overview
Motor essentials
Facts about the complete product. Unknown values remain open design questions.
- Rated voltage
- 14.8 V
- No-load speed
- 39 RPM
- Gear reduction
- 272.5:1
- Encoder
- contactless absolute magnetic, 12-bit (4096 pulse/rev), ams AS5045
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)
- 44 × 33.5 × 58.5 mm
- Verification
- generated
- Envelope complete
- Yes
Torque & control
Torque, speed and control
What the joint can deliver and how the controller talks to it.
- Type
- SMART_SERVO
- No-load speed
- 39 rpm
- Encoder
- contactless absolute magnetic, 12-bit (4096 pulse/rev), ams AS5045
- Control
- TTL · current, velocity, position, extended position (multi-turn), current-based position, PWM
| Connector | Type |
|---|---|
| ttl | TTL 3-pin JST EH (B3B-EH-A header, EHR-03 housing), 21 AWG |
Rated torque is continuous; peak torque is short-duration. Values with two figures (e.g. 24/48 V) are per supply voltage.
Specifications
Motor performance
No-load, rated-load and stall figures retain their separate test conditions.
- Rated voltage
- 14.8 V
- No-load speed
- 39 RPM
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
- -5 to 80 °C
Mechanical dimensions
Reported product dimensions may exclude protruding components. Unknown height does not establish a complete clearance envelope.
- Length
- 44 mm
- Width
- 33.5 mm
- Reported height / thickness
- 58.5 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 |
|---|---|---|---|
| ttlTTL 3-pin JST EH (B3B-EH-A header, EHR-03 housing), 21 AWG | 3 | 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.
robotis.us
US · USD
$620.89Minimum quantity unknown
- Observed stock
- in stock
- Checked
- Oct 1, 2026, 05:02 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
DYNAMIXEL X540 series — product photo (robotis.us) (opens in a new tab)
Manufacturer reference
store og:image for the XH540-W270-T page (X540 series 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_max_v, spec.constraints.electrical.supply_voltage_min_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.actuator_type, spec.provides.backlash_deg, spec.provides.control_interface, spec.provides.control_modes, spec.provides.encoder, spec.provides.encoder_bits, spec.provides.features, spec.provides.gear_ratio, spec.provides.integrated_driver, spec.provides.kt_nm_per_a, spec.provides.motor_type, spec.provides.no_load_speed_rpm, spec.provides.peak_torque_nm, spec.usage.connectors, spec.usage.pinout, spec.usage.pinout_complete, spec.usage.requirements.other.peak_current_a, spec.usage.requirements.rated_voltage_v
sha256 4685c1f16cfdb7623a9bec767b93a2fa4bccc265e1107633b3dcb867c518f92a
Supports: offers
FAQ
ROBOTIS DYNAMIXEL XH540-W270-T questions
What voltage powers the ROBOTIS DYNAMIXEL XH540-W270-T?
Supply range 10–14.8 V.
How much does the ROBOTIS DYNAMIXEL XH540-W270-T cost?
From $620.89 at robotis.us. Prices are observed unit prices before tax and shipping.
What are the ROBOTIS DYNAMIXEL XH540-W270-T dimensions?
44 × 33.5 × 58.5 mm. A STEP model is available for enclosure fit checks.
Where does this ROBOTIS DYNAMIXEL XH540-W270-T 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.