Description
Product Introduction
The Kollmorgen Pacific Scientific ARTUS AD8650503 Horizontal Rotary Actuator is an aerospace electromechanical actuator designed for horizontal rotary positioning applications. It belongs to the Pacific Scientific ARTUS actuator product family, which was used in aircraft actuation systems. The AD8650503 is identified as a Horizontal Reduction Gear Actuator in ARTUS capability references.
This actuator combines a precision rotary drive mechanism with a reduction gear assembly to provide controlled mechanical movement in aircraft and specialized motion-control applications. It is commonly maintained as a replacement component for legacy aerospace systems where exact mechanical compatibility is required.
Before installation, confirm the complete part number, actuator revision, mounting configuration, electrical interface, mechanical travel requirements, and system application.

AD8650503
Product Datasheet
| Parameter | Specification |
|---|---|
| Brand | Kollmorgen / Pacific Scientific ARTUS |
| Model | AD8650503 |
| Series | ARTUS Actuator Series |
| Product Name | Horizontal Rotary Actuator |
| Product Type | Horizontal Reduction Gear Actuator |
| Application | Aerospace electromechanical actuation systems |
| Drive Mechanism | Rotary actuator with reduction gear assembly |
| Manufacturer Part Number | AD 8650503 |
| Country of Origin | France (reported by supplier listing) |
| Dimensions | Verify from aircraft maintenance documentation |
| Weight | Verify from product label and technical manual |
| Power Requirements | Verify aircraft system specification |
| Product Status | Used / Surplus condition depending on inventory source |
| Discontinued | Legacy product; confirm current support availability |
Key Features
⚙️ Precision rotary actuation
Provides controlled rotary movement for aerospace mechanical systems.
⚙️ Reduction gear design
Integrated gearing increases torque output and enables precise positioning.
⚙️ ARTUS aerospace heritage
Designed for specialized aviation actuator applications.
⚙️ Legacy replacement support
Suitable for maintenance programs requiring original ARTUS components.
⚙️ Mechanical reliability
Built for demanding environments where accurate actuator movement is required.
Typical Applications
✈️ Aircraft flight-control actuation systems
✈️ Aerospace mechanical positioning systems
✈️ Aviation equipment refurbishment
✈️ Defense and specialty vehicle applications
✈️ Legacy ARTUS actuator replacement programs
Fault Troubleshooting and Common Issues
🔧 Actuator does not move
- Check aircraft/system power supply.
- Verify electrical connector condition.
- Inspect control signals from the actuator controller.
- Confirm mechanical locking or obstruction is not present.
🔧 Slow or abnormal movement
- Check reduction gear condition.
- Inspect for mechanical wear or contamination.
- Verify operating voltage and control parameters.
- Confirm actuator load is within specification.
🔧 Excessive noise during operation
- Inspect internal gear components.
- Check lubrication condition if applicable.
- Verify mounting alignment.
- Replace damaged mechanical components if required.
🔧 Positioning error
- Verify feedback sensors or position indicators.
- Check mechanical backlash.
- Confirm actuator calibration requirements.
Safety Precautions
⚠️ Disconnect all electrical power before inspection or replacement.
⚠️ Follow aircraft maintenance procedures and approved documentation.
⚠️ Do not manually force the actuator beyond its designed mechanical travel.
⚠️ Verify correct part number and revision before installation.
⚠️ Only qualified aviation maintenance personnel should service aircraft actuator components.
Frequently Asked Questions
Q1: What is the Kollmorgen Pacific Scientific ARTUS AD8650503?
A: It is a horizontal reduction gear actuator used in ARTUS aerospace actuation systems.
Q2: Is AD8650503 an electric motor?
A: No. It is a complete actuator assembly that includes a rotary drive mechanism and reduction gearing.
Q3: What is the difference between AD8650503 and AD8650603?
A: AD8650503 is identified as a horizontal reduction gear actuator, while AD8650603 belongs to the vertical actuator family. Verify application requirements before substitution.
Q4: Can it replace another ARTUS actuator?
A: Not automatically. Aircraft actuators require exact mechanical, electrical, and certification compatibility.
Q5: Is this part still manufactured?
A: The ARTUS Pacific Scientific product family is considered a legacy aerospace product line. Current availability should be confirmed through specialized suppliers or support channels.
Q6: What should be checked before ordering?
A: Confirm:
- Complete part number
- Aircraft application
- Revision level
- Connector type
- Mounting dimensions
- Functional test requirements
Recommended Related Kollmorgen / Pacific Scientific ARTUS Models
- AD8650501 — Horizontal Reduction Gear Actuator.
- AD8650502 — Horizontal Reduction Gear Actuator.
- AD8650503A — Horizontal Reduction Gear Actuator variant.
- AD8650601 — Vertical Reduction Gear Actuator.
- AD8650602 — Vertical Reduction Gear Actuator.
- AD8650603 — Vertical Reduction Gear Actuator.
- AD8650603A — Vertical Reduction Gear Actuator variant.
- AD8653301 — Linear Actuator.
- AD8653302 — Linear Actuator.
- AD8552502-1 — Dual Extension Actuator.
- RT19H4F01 — Horizontal Reduction Gear Actuator.
- RT19H4F02 — Horizontal Reduction Gear Actuator.
- RT19H5F01 — Vertical Reduction Gear Actuator.
- DV8456701-4 — Rudder Travel Limitation Unit.
- PR4237-1 — Stick Shaker Assembly.
Always verify aircraft application, certification requirements, and complete actuator identification before selecting a replacement component.
