What Is a 3 Position Rotary Pneumatic Cylinder?
A standard double acting cylinder generates linear motion.
A rotary pneumatic cylinder, however, transforms linear piston movement into angular rotation through a rack and pinion transmission system.
The MSZ Series is designed as a 3 position rotary actuator, meaning it can accurately stop at:
- Left position
- Center position
- Right position
This makes it ideal for indexing tables and applications that require an intermediate stop.
Compared with traditional 2-position rotary cylinders (90° / 180° fixed types), the MSZ offers adjustable angle flexibility and improved positioning control.
Key Features of MSZ Rotary Table Actuator
✔ 3 Position Indexing Control
- Left / Center / Right positioning
- Controlled by single 3-position solenoid valve
- Simplified pneumatic circuit
Perfect for automation systems requiring intermediate positioning.
✔ Adjustable Rotation Angle (0°–190°)
- Total adjustable range: 0° to 190°
- Center fine adjustment: ±10°
Engineers can easily customize rotation limits based on load requirements.
✔ Dual Piston Rack and Pinion Structure
The balanced dual-piston design ensures:
- Stable torque output
- Reduced vibration
- Compact body size
- Long service life
This rack and pinion rotary actuator structure provides smooth motion and high repeatability.
✔ Compact & Lightweight Design
Compared with traditional rotary indexing tables:
- Smaller installation space
- Lower system weight
- Easy integration into OEM equipment
Ideal for space-limited automation machinery.
✔ Non-Lubricated Air Operation
Designed for clean, dry compressed air.
No lubrication required, reducing maintenance complexity.
Technical Specifications
| Parameter | MSZ Series |
|---|---|
| Type | Double Acting Rotary Cylinder |
| Bore Size | 10 / 20 / 30 / 50 mm |
| Operating Pressure | 0.2 – 1.0 MPa |
| Max Pressure | 1.0 MPa |
| Rotation Range | 0° – 190° Adjustable |
| Center Adjustment | ±10° |
| Rotation Time (90°) | 0.2 – 1.0 s |
| Fluid | Filtered Compressed Air |
| Temperature | 0 – 60°C (No Freezing) |
| Port Size | M5 |
Typical Applications
The MSZ 3 position pneumatic rotary cylinder is widely used in:
- Automated assembly indexing tables
- Electronics production lines
- Packaging rotation stations
- Pick-and-place rotation modules
- Semiconductor handling equipment
- Medical device assembly systems
It is especially suitable for modular automation equipment where compact design and intermediate positioning are required.
MSZ vs Standard Rotary Cylinder
| Feature | MSZ 3 Position | Standard 2 Position |
|---|---|---|
| Positions | 3 (L/C/R) | 2 |
| Angle | 0–190° Adjustable | Fixed 90° / 180° |
| Structure | Dual piston | Single piston |
| Indexing | Yes | Limited |
| Flexibility | High | Medium |
If your system requires precise center-stop indexing, the MSZ is a better choice.
Selection Guide
When selecting a pneumatic rotary actuator, consider:
- Required output torque
- Load inertia
- Required rotation angle
- Installation space
- Control method (3-position valve)
Correct sizing improves durability and prevents premature wear.
Our engineering team can assist with torque calculation and model selection.
Why Choose CHDAC MSZ Series?
- High repeatability
- Compact structure
- Rack and pinion precision design
- Stable 3-position control
- OEM customization support
- Fast delivery
- Competitive factory pricing
- SMC MSZ equivalent replacement option
We support bulk orders, distributor cooperation, and OEM automation projects.
FAQ
No. A standard double acting cylinder produces linear motion.
The MSZ is a rotary actuator that converts air pressure into controlled angular rotation.
Yes. The MSZ Series is dimensionally compatible and can be used as an equivalent replacement option. Please contact us for detailed drawings.
No. Clean, dry, filtered air is sufficient.
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