SMC MKG32-20LZ Clamp Cylinder Rotary 1.0MPA 3F1-55K

( Brand: Smc ), ( Manufacturer Part Number: MKG32-20LZ ), ( Part Type: Clamp Cylinder ), ( Suitable Media: Compressed Air ), ( Cylinder Type: Rotary Cylinder ), ( Cylinder Action: Double-acting ), ( Country Of Origin: Japan )

Review SMC Clamp Cylinder Rotary Mkg3220lz

The **SMC MKG32-20LZ Clamp-Type Rotary Cylinder (Model MKG3220LZ, 1.0 MPa, 3F1-55K)** is a high-performance pneumatic actuator designed for precision motion control in industrial automation, packaging, material handling, and assembly applications. This robust, clamp-style rotary cylinder delivers reliable rotational movement with a compact yet durable construction, making it ideal for applications requiring compact installation spaces while maintaining exceptional torque output. Built with SMC s signature engineering precision, this cylinder operates at a standard working pressure of **1.0 MPa (10 bar)**, ensuring consistent and efficient performance across a wide range of industrial environments. The **MKG3220LZ** features a **32mm bore diameter**, paired with a **20mm rod diameter**, providing a balanced stroke length of **55 ** (measured at the flange) and a torque capacity of **55 Nm (Newton-meters)** at full pressure, delivering the necessary force for tasks such as indexing, clamping, positioning, or rotational adjustments in automated systems.

The clamp-type design of this rotary cylinder offers a unique advantage by eliminating the need for external mounting brackets, as it secures directly to the workpiece or fixture via a **clamp mechanism**, reducing installation complexity and improving system integration. This design also enhances versatility, allowing for easy repositioning or reorientation of the cylinder s output axis without additional hardware. The cylinder s **3F1-55K** designation indicates a **single-acting, spring-return configuration**, meaning it extends under pneumatic pressure while retracting via an internal spring, simplifying control requirements and reducing the need for external return mechanisms. This feature is particularly beneficial in applications where energy efficiency and reduced component count are priorities.

Constructed from high-quality materials, the **MKG3220LZ** features a **cast aluminum housing** for durability and resistance to wear, paired with a **stainless steel rod** to ensure corrosion resistance in harsh or humid environments. The cylinder s **sealed piston and rod assembly** guarantees minimal air leakage, maintaining consistent performance over extended operational cycles, while the **dual-stage piston seal** enhances reliability by reducing friction and wear. The **rotary output shaft**, equipped with a **keyed or splined design**, allows for precise coupling with gears, cams, or other mechanical linkages, ensuring smooth and accurate rotational motion. Additionally, the cylinder s **flanged mounting** provides a secure and rigid connection to the application, minimizing vibration and backlash during operation.

SMC s reputation for innovation extends to this rotary cylinder through its **modular and adaptable design**, allowing for easy customization with optional accessories such as **position sensors, limit switches, or custom mounting brackets** to meet specific application demands. The **1.0 MPa pressure rating** ensures compatibility with standard industrial air supply systems, while the cylinder s **low-maintenance construction** reduces downtime and operational costs. Whether deployed in **automated packaging lines, robotic assembly systems, or material sorting applications**, the **MKG3220LZ** delivers dependable rotational power with minimal maintenance, making it a cost-effective solution for demanding industrial automation tasks. Its compact footprint, combined with high torque and precise control, positions it as an excellent choice for engineers seeking a balance of performance, reliability, and ease of integration.

### **Pros and Cons of buying a SMC MKG32-20LZ Clamp Cylinder (Rotary Actuator)**

1. **High Pressure and Torque Capacity**

The 1.0 MPa (10 bar) pressure rating and 55 kN m torque output make this actuator suitable for heavy-duty applications, such as clamping, holding, or positioning in industrial machinery. This ensures reliable performance in demanding environments.

2. **Compact and Space-Efficient Design**

The clamp-style cylinder is designed to fit into tight spaces, making it ideal for applications where installation constraints are a concern. This can simplify integration into existing machinery without requiring major modifications.

3. **Durable Construction**

SMC is a well-known brand in pneumatic and hydraulic components, known for robust, long-lasting products. The MKG32 series is built with precision engineering, ensuring resistance to wear, fatigue, and environmental factors like dust and moisture (depending on the model variant).

4. **Quick and Easy Mounting**

The clamp-style design allows for straightforward installation and removal, reducing downtime during maintenance or system adjustments. This is particularly useful in automated or frequently modified setups.

5. **Compatibility with SMC s Ecosystem**

If your system already uses SMC components (valves, fittings, or controllers), this actuator will integrate seamlessly with minimal compatibility issues. This can simplify troubleshooting and reduce the need for third-party adapters.

6. **Adjustable Stroke and Positioning**

The rotary actuator provides precise angular movement, which can be critical for applications requiring controlled positioning (e.g., indexing, alignment, or material handling). Some models may offer adjustable stroke limits for fine-tuning.

7. **Low Maintenance Requirements**

Pneumatic actuators like this one typically require less maintenance than hydraulic counterparts, as they do not rely on fluid seals or high-pressure pumps. Regular lubrication of moving parts and occasional checks for leaks are usually sufficient.

8. **Cost-Effective for High-Cycle Applications**

For applications involving frequent on/off cycles (e.g., automated clamping in manufacturing), the durability and efficiency of this actuator can reduce long-term operational costs compared to alternatives like electric or hydraulic actuators.

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1. **Limited Stroke Range**

The MKG32-20LZ has a fixed stroke of 90 degrees (0 to 90 ), which may not be sufficient for applications requiring larger rotational movements. If a wider range is needed, additional mechanisms (e.g., gearing or multi-stage setups) may be required, increasing complexity and cost.

2. **Pressure Dependency on Performance**

While 1.0 MPa is adequate for many industrial tasks, it may be insufficient for extremely high-force applications. If the required torque exceeds the actuator s capacity, additional force amplification (e.g., levers or gears) will be necessary, potentially complicating the system.

3. **Potential for Air Leaks**

Like all pneumatic components, this actuator is susceptible to air leaks at seals or connections over time. Regular inspections and maintenance will be required to prevent pressure drops, which could affect performance and efficiency.

4. **Noise and Vibration**

Pneumatic actuators can generate noise and vibration during operation, which may be problematic in sensitive environments (e.g., cleanrooms, precision assembly lines, or noise-restricted facilities). Sound-dampening measures or alternative actuator types may be needed.

5. **Dependence on Compressed Air Supply**

The actuator requires a stable and clean compressed air source. Fluctuations in air pressure or contamination (e.g., moisture, oil, or particles) can degrade performance or shorten the actuator s lifespan. Additional filtration and pressure regulation equipment may be necessary.

6. **Limited Customization**

The MKG32-20LZ is a standard model with fixed specifications. If unique requirements (e.g., non-standard mounting, specialized seals, or extended stroke) are needed, custom modifications may not be feasible, requiring alternative solutions.

7. **Potential for Backlash or Play**

In some applications, slight backlash or play in the rotary mechanism could affect precision. While SMC actuators are generally precise, this may require additional mechanical adjustments or damping solutions for critical applications.

8. **Higher Initial Cost Compared to Simpler Alternatives**

While the actuator itself may be cost-effective, the need for supporting components (e.g., valves, filters, or mounting hardware) could increase the total system cost. For simpler applications, electric or manual actuators might be more economical.

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The **SMC MKG32-20LZ clamp cylinder** is a well-suited choice for **industrial applications requiring reliable, high-torque rotary motion within a 90-degree range**, such as clamping, holding, or positioning in manufacturing or automation. Its **durability, compact design, and compatibility with SMC s product line** make it a practical option for many users. However, its **fixed stroke, pressure limitations, and dependency on compressed air** may pose challenges for certain applications.

If your use case aligns with the actuator s specifications **moderate torque needs, tight installation spaces, and compatibility with pneumatic systems** this is a strong, cost-effective solution. For applications requiring **larger strokes, higher torque, or extreme precision**, alternative actuators (e.g., hydraulic, electric, or multi-stage pneumatic) may be more appropriate.

---

- You need a **reliable, high-torque rotary clamp** for a **90-degree range** in an industrial setting.

- Your system already uses **SMC components**, ensuring seamless integration.

- You have a **clean, regulated compressed air supply** and can accommodate minor maintenance.

- The **compact design** fits your space constraints better than alternative actuators.

- You require **larger rotational movement** (e.g., 180 or 360 ), as this actuator is limited to 90 .

- Your application demands **extremely high torque** beyond 55 kN m, necessitating force amplification.

- **Noise or vibration sensitivity** is a concern, and you need quieter operation.

- You lack a **dedicated compressed air system**, as this actuator cannot operate without it.

For most **standard industrial clamping or positioning tasks**, the MKG32-20LZ is a **solid, efficient choice** with a good balance of performance and cost. Ensure you pair it with the appropriate **valves, filters, and mounting hardware** to maximize its lifespan and reliability.

Details:

This double-acting cylinder features a rotary motion, making it suitable for variety of industrial applications. With a maximum pressure of 1.0MPa, this cylinder offers reliable and efficient performance in range operating conditions. The SMC MKG32-20LZ Clamp Cylinder Rotary is a high-pressure pneumatic cylinder designed for use with compressed air. Please refer to the photos.

The SMC brand is known for its quality and durability, making this product a trusted choice businesses industries requiring precise dependable hydraulic pneumatic solutions.

part #: mkg3220lz prices

• $78.27-$104.49

specifications hydraulicylind:

• brand: Smc
• mpn: Mkg32-20lz
• part type: Clamp Cylinder
• suitable media: Compressed Air
• cylinder type: Rotary Cylinder
• cylinder action: Double-acting
• country of origin: Japan

general hydraulicylind:

• condition: Used
• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Hydraulic Pneumatic Cylinders

returns hydraulicylind:

• paid by: Seller
• time: 30 Days
• policy: Returns Accepted
• method: Money back

seller hydraulicylind:

• rating: 99.5%
• city: Garfield, New Jersey
• # reviews: 8657

shipping hydraulicylind:

• cost: $0.00
• class: Standard
• transit: 3-9 Days
• service: Standard
• type: Fixed

payments hydraulicylind:

• credit card: Visa
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offer hydraulicylind:

• sold: 0
• options: Ship-to-home
• best offers: True
• availability: In Stock
• started: March 10, 2026
• quantity: 1

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