Overview
RS-485 Bus Communication
Brushless Motor & Smart Protection
Advanced Modes & Stop Behaviors
- Single-Turn: ±180° range for standard rotary joints
- Multi-Turn: ±368,640° (1,024turns) range, with multi-turn count saved after power-off
- Damping Mode: controlled resistance for smooth, compliant motion
- 3 Stop Modes: Free, Lock, and Damp for different holding/release needs
24 V Robotic Power Platform
Custom Home Position
RS-485 Ecosystem & Daisy-Chain Ready
Media Gallery
Specification
|
Item |
Basic Specifications |
|---|---|
|
Operating Voltage |
24 V |
|
Motor Type |
Brushless Motor |
|
Position Sensor |
12-bit Contactless Absolute Encoder (Magnetic) |
|
Effective Range (Travel Range) |
±180° (single-turn) | ±368,640° (multi-turn) |
|
Resolution |
4,096 counts / 360° (0.088°) |
|
Processor |
32-bit MCU |
|
Communication |
RS-485 |
|
Baud Rate |
9,600 bps ~ 1 Mbps |
|
ID Range |
0 ~ 254 |
|
Gear Ratio |
173:1 |
|
Output Spline Spec |
Stainless Steel / Ø6 mm / D-shaft |
|
Gear Material |
Full-metal stainless-steel gear set |
|
Connector Type |
PH2.0 - 4Pin |
|
Housing Material |
Full Aluminum Alloy |
|
Dimensions |
40 x 20 x 46 mm |
|
Weight |
95 g |
|
Operating Temperature |
-10 ~ 60 °C |
|
Operating Modes |
Single-turn Position | Multi-turn Position | Damping Mode |
|
Item |
Characteristic Specifications |
|---|---|
|
Max Static Torque (Stall) |
2.74 N·m (28 kg·cm) |
|
Max Dynamic Torque |
1.47 N·m (15 kg·cm) |
|
Rated Torque |
0.44 N·m (4.5 kg·cm) |
|
Rated Speed |
116 rpm (0.086 sec / 60°) |
|
No-load Speed |
142 rpm (0.070 sec / 60°) |
|
No-load Current |
<300 mA |
|
Standby Current |
<40 mA |
|
Peak Current |
3 A |
|
Axial Load |
20 N |
|
Radial Load |
40 N |
Performance Curves
SDK And Platforms
CAD Drawings
Documents
Certification
|
HS Code |
8501109990 |
|
ECCN Code |
EAR99 |
|
Country of Origin |
China |
|
Certifications |
CE, FCC, RoHS |
Part List
|
Item |
Qty. |
|---|---|
|
Servo |
1 |
|
PM M3*14mm Screw |
4 |
|
M3 Lock Nut |
4 |
|
200mm 3-pin Cable (PH2.0×2) |
1 |
| Protocol Type | RS-485 |
|---|---|
| Input Voltage | 18.0 ~ 25.2V |
| Motor Type | Brushless |
| Position Sensor | 12-bit Contactless Absolute Encoder (Magnetic) |
| Effective Position Range | ±180° (single-turn) / ±368,640° (multi-turn) |
| Resolution | 4,096 steps/ 360° (0.088°) |
| Processor | 32-bit MCU |
| Baud Rate | 9,600 bps ~ 1 Mbps |
| ID Range | 0 ~ 254 |
| Gear Ratio | 173:1 |
| Output Spline Specification | Stainless Steel / ⌀6 mm / D-shaft |
| Gear Material | All Stainless Steel Construction |
| Interface | PH2.0 – 4Pin |
| Case Material | All Aluminum Alloy |
| Dimensions | 40 x 20 x 46 mm |
| Appearance | Single-shaft |
| Weight | 96 g |
| Operating Temperature | -10 ~ 60 °C |
| Operating Mode | Single-turn Angle | Multi-turn Angle | Damping Mode |
| Max Stall Torque | 2.74 N·m (28 kg·cm) |
| Max Continuous Torque | 1.18 N·m (12 kg·cm) |
| Rated Torque | 0.44 N·m (4.5 kg·cm) |
| Rated Speed | 116 rpm (0.086 sec @ 60°) |
| No Load Speed | 142 rpm (0.070 sec / 60°) |
| Peak Current | 3A |
| No Load Current | ＜300mA |
| Standby Current | ＜40mA |
| Axial Load | 20N |
| Radial Load | 40N |
Frequently Asked Questions About HX8-R29W-M RS-485 Servo
These FAQs explain how the HX8-R29W-M fits robotics, automation, education, and engineering projects, with details on protocol, power, torque, speed, documentation, and integration resources.
What makes the HX8-R29W-M a good RS-485 servo for robotics?
The HX8-R29W-M combines RS-485 control, brushless motor, 12-bit contactless absolute encoder (magnetic), and a 2.74 N·m (28 kg·cm) maximum stall torque in a servo package built for compact robot arms, desktop automation, humanoid limbs, and multi-servo teaching platforms where differential bus communication and longer wiring runs are useful. This gives engineers a clearer match between communication method, torque class, and mechanical load than choosing a generic hobby servo.
Why use the HX8-R29W-M RS-485 bus servo in a robot system?
The HX8-R29W-M uses RS-485 communication, which is useful for multi-servo wiring, differential signaling, and more robust communication in automation or robot platforms. It is a practical choice when a robotic servo network needs cleaner cabling and stronger noise resistance than simple single-ended serial wiring.
What power supply should be used with the HX8-R29W-M?
Use a stable external power supply within the 24 V operating range. Because the HX8-R29W-M can reach 2.74 N·m (28 kg·cm) stall torque, the power system should provide enough current for startup, acceleration, and loaded motion; avoid powering the servo directly from a microcontroller board.
How does the HX8-R29W-M balance torque, speed, and size?
This model is specified with 2.74 N·m (28 kg·cm) stall torque, 1.18 N·m (12 kg·cm) max continuous torque, and 0.44 N·m (4.5 kg·cm) rated torque. Its no-load speed is 142 rpm (0.070 sec / 60°), with rated speed of 116 rpm (0.086 sec / 60°), and the weight is 95 g. These figures make it better suited for balanced robotic motion rather than one-size-fits-all servo selection.
Can the HX8-R29W-M be used in multi-servo robotic systems?
Yes. The HX8-R29W-M is intended for bus-style robotic systems, with an ID range of 0 ~ 254. For reliable multi-servo operation, assign unique servo IDs, follow the recommended wiring topology, and size the power supply for the combined current of all moving axes.
Where can I find documentation, drawings, and setup resources for the HX8-R29W-M?
Use the product page sections for Documents, CAD Drawings, and related resources. Fashion Star Wiki resources also cover servo selection, communication protocols, wiring and power-supply guidance, debugging tools, SDK packages, and model or drawing downloads for the servo series.
What position-control range does the HX8-R29W-M support?
The HX8-R29W-M supports ±180° (single-turn angle) | ±368,640° (multi-turn angle). This makes the servo useful for both conventional joint rotation and applications that need extended motion range, provided the mechanical design and software limits are configured correctly.
Engineering note: Always confirm power input, wiring, mechanical load, and software limits before testing the HX8-R29W-M in a finished robot or automation system.
Shipping & Delivery
We ship orders to customers worldwide. Most orders are dispatched via DHL Express to provide fast, reliable international delivery with end-to-end tracking.
Processing Time
In-stock items are usually processed within 1–3 business days after payment is confirmed.
Shipping Method
Our default international shipping method is DHL Express. Other trusted express or air services may be used when appropriate.
Estimated Delivery Time
DHL Express delivery typically takes 3–7 business days after dispatch for most international destinations.
Shipping Cost
Shipping costs are calculated based on the destination, package weight, dimensions, and selected shipping method. The final shipping cost will be shown at checkout before payment.
For large-volume or special shipments, please contact us for a shipping quotation.
Customs Duties & Import Taxes
International orders may be subject to customs duties, import taxes, VAT/GST, brokerage fees, or other charges required by the destination country/region.
These charges are not included in the product price or shipping cost unless specifically stated. Customers are responsible for any applicable import duties, taxes, and customs-related fees. Please check with your local customs office before placing an order.
Order Tracking
Once your order has been shipped, we will provide a tracking number by email or through your account order details. Tracking information may take up to 24 hours to update after the shipment is collected by the carrier.
Delays & Special Situations
Delivery may be delayed due to public holidays, customs inspections, weather conditions, carrier disruptions, force majeure events, or other circumstances beyond our control.
RS-485 Bus Servo (HX8-R29W-M)
$176.30
The HX8-R29W-M RS-485 bus servo integrates a DC motor, gearbox, control driver, sensors and communication protocol in one compact unit, offering robust multi-drop communication with 2.74 N·m (28 kg·cm), 24 V, brushless motor, 12-bit contactless absolute encoder (magnetic) for high-reliability control in multi-axis robots, robotic arms, automation equipment and research platforms.
Available on backorder
Essential Add-on
RS-485 Bus Servo (HX8-R29W-M)
$176.30
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