1. Overview
The KAT Series Rotary Actuator by KaiserDrive is engineered to meet high-end automation demands requiring a larger hollow shaft. It retains the key advantages of the KAH series—such as high torque, zero backlash, and precision—while providing an enlarged through-hole for complex cable, pneumatic, or laser integration.
The design integrates a harmonic reducer, frameless torque motor, high-resolution hollow-shaft absolute encoder, brake, and smart sensors in a compact mechatronic unit with excellent dynamic response and long-term reliability.
2. Key Features
Enlarged Hollow Shaft
Ideal for routing cables, air lines, and lasers through the center axis, simplifying system architecture and improving layout efficiency.
High Torque Output
Models like the KAT-40 can deliver up to 800 N·m, suitable for high-load, fast-response industrial operations.
Precision Positioning
Delivers positioning accuracy within ±30 arc seconds using integrated high-resolution absolute encoders.
Integrated Mechatronic System
Combines drive, motor, encoder, brake, and sensors for plug-and-play performance, reducing design and assembly effort.
Multi-Voltage Support
Available in 220VAC, 110VAC, and 48VDC versions to meet global market standards.
Rugged Protection (IP67)
IP67-rated design ensures reliable operation in dusty, humid, or oil-contaminated environments.
Seamless Compatibility with KDE Drives
When used with KaiserDrive’s KDE EtherCAT servo drives, the system achieves ultra-low vibration, high responsiveness, and smooth motion.
3. Application Fields
- Electronics & Semiconductors: Wafer handling, packaging, testing
- Precision CNC Machines: Rotary axes, indexing units
- 3C Automation: High-speed assembly, dispensing, vision alignment
- Laser Processing: Marking, welding, cutting
- Medical Devices: Imaging, surgical robots, rehabilitation systems
- LED, Printing & Inkjet Systems
- Glass & Optical Processing Machines
- Precision Metrology Equipment
4. Comparison: KAT vs KAH Series
| Feature | KAT Series | KAH Series |
| Hollow Shaft Size | Larger for complex routing needs | Standard, compact hollow shaft |
| Max Torque Output | Up to 800 N·m | Up to 800 N·m |
| Precision | ≤30 arcsec | ≤10 arcsec |
| Size | Similar size | More compact |
| Protection Rating | IP67 | IP67 |
| Best Use Cases | Laser, semiconductor, medical | 3C automation, general machinery |
5. Model Selection Guide
- Check Hollow Shaft Requirements – Select KAT if you need to route multiple components through the shaft.
- Match Torque Rating to Load – Choose suitable model such as KAT-32, KAT-40 based on load torque.
- Pair with KDE Servo Drives – Ensure optimal control with EtherCAT-based KDE drives.
- Select Voltage for Compatibility – Match 220VAC, 110VAC, or 48VDC options as per local power standards.
KAT Series Datasheets (PDF)
3D CAD Models (STEP format)
Encoder/Brake/Control Wiring Diagrams
KDE Servo Drive Software & Manuals
