RS-485 Bus Servo · RX8-R281H-M
$148.70
On backorder — Contact us for lead timeA high-value 12V RS-485 servo delivering 28 kg·cm stall torque, multi-turn control, position feedback, and multiple built-in protections.
Essential Add-on
RS-485 Bus Servo · RX8-R281H-M
$148.70
485/USB Converter (UC-05)
$12.80
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
Rich Motion Commands & Profiles
Custom Home Position
RS-485 Ecosystem & Daisy-Chain Ready
Media Gallery
Specification
|
Item |
Basic Specifications |
|---|---|
|
Protocol Type |
RS-485 |
|
Input Voltage |
9.0 ~ 12.6V |
|
Motor Type |
Brushless |
|
Position Sensor |
12-bit Contactless Absolute Encoder (Magnetic) |
|
Effective Position Range |
±180° (single-turn) / ±368,640° (multi-turn) |
|
Resolution |
4,096 counts / 360° (0.088° per count) |
|
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 / 25T |
|
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 |
|
Item |
Characteristic Specifications |
|---|---|
|
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 |
5.5 A |
|
No Load Current |
＜300 mA |
|
Standby Current |
＜40 mA |
|
Axial Load |
20N |
|
Radial Load |
40N |
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 |
|
8-Hole Main Horn |
1 |
|
PM M3*6mm Screw |
1 |
|
PM M2*4.5mm Screw |
8 |
|
PM M3*14mm Screw |
4 |
|
M3 Lock Nut |
4 |
|
Mounting Spacer |
2 |
|
200mm 3-pin Cable (PH2.0×2) |
1 |
| Protocol Type | RS-485 |
|---|---|
| Input Voltage | 9.0 ~ 12.6V |
| Motor Type | Brushless |
| Position Sensor | 12-bit Contactless Absolute Encoder (Magnetic) |
| Effective Position Range | ±180° (single-turn) / ±368, 640° (multi-turn) |
| Resolution | 4,096 counts / 360° (0.088° per count) |
| 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 / 25T |
| Gear Material | All Stainless Steel Construction |
| Interface | PH2.0 – 4Pin |
| Case Material | All Aluminum Alloy |
| Dimensions | 40 x 20 x 48.2 mm |
| Appearance | Dual-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 | 5.5 A |
| No Load Current | ＜300 mA |
| Standby Current | ＜40 mA |
| Axial Load | 20N |
| Radial Load | 40N |
Frequently Asked Questions About HX8-R28H-M RS-485 Servo
These FAQs explain how the HX8-R28H-M fits robotics, automation, education, and engineering projects, with details on protocol, power, torque, speed, documentation, and integration resources.
What power supply should I use with the HX8-R28H-M?
What single-turn and multi-turn position ranges does it support?
When should I choose this RS-485 bus servo instead of a PWM servo?
Can multiple HX8-R28H-M servos operate on the same RS-485 bus?
Where can I find the datasheet, CAD files, protocol, software and SDKs?
Engineering note: Always confirm power input, wiring, mechanical load, and software limits before testing the HX8-R28H-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.
