SMC CRQ2BS20TN-180 Rotary Actuator Rack Pinion Pneumatic

( Brand: Smc ), ( Manufacturer Part Number: CRQ2BS20TN-180 ), ( Model: SMC CRQ2BS20TN-180 ), ( Part Type: Actuator Pinion Pneumatic Rack ), ( Actuator Type: Single Rack ), ( Rotation Angle: 180 Degree )

Review SMC Compact Rotary Actuator 180 Rack And Pinion Pneumatic

The **SMC CRQ2BS20TN-180 Rotary Actuator (Rack & Pinion Pneumatic)** is a high-performance, precision-engineered pneumatic actuator designed for demanding industrial applications requiring reliable rotational motion with exceptional repeatability and durability. Part of SMC s renowned CRQ series, this compact yet robust actuator leverages a **rack-and-pinion mechanism** to deliver smooth, torque-efficient rotation over a full **180-degree arc**, making it ideal for indexing, clamping, positioning, and automated assembly tasks. Constructed from high-grade materials, including a **stainless steel shaft** and reinforced housing, the CRQ2BS20TN-180 ensures resistance to wear, corrosion, and environmental contaminants, even in harsh factory settings where moisture, dust, or chemical exposure may be present. Its **double-acting design** allows for precise bidirectional control, enabling the actuator to engage, hold, or release with minimal hysteresis, while the integrated **sealed bearing system** maintains smooth operation over extended cycles, reducing friction and extending service life. The actuator s **compact footprint** and modular mounting options including flange, base, or direct shaft attachment make it versatile for integration into existing machinery, conveyor systems, or custom automation cells without compromising space efficiency. With a **standard operating pressure range of 0.2 to 0.8 MPa (2 to 8 bar)**, the CRQ2BS20TN-180 delivers consistent torque output, accommodating loads up to **20 Nm (Newton-meters)**, while its **quick-disconnect fittings** simplify pneumatic line connections for rapid setup and maintenance. Additionally, the actuator s **low inertia design** minimizes energy consumption and accelerates response times, enhancing overall system productivity. Whether deployed in packaging machinery, material handling, or precision manufacturing, this actuator exemplifies SMC s commitment to engineering precision, reliability, and adaptability into every pneumatic solution, ensuring seamless integration into automated processes where accuracy and repeatability are paramount.

### **Pros and Cons of buying a SMC CRQ2BS20TN-180 Rotary Actuator (Rack & Pinion, Pneumatic)**

1. **High Torque Output** The 20-ton (200 kgf m) capacity makes it suitable for heavy-duty applications, such as industrial automation, material handling, and robotic arms where precise rotational force is required.

2. **Rack & Pinion Mechanism** This design provides smooth, linear-to-rotary motion conversion with minimal backlash, ensuring accurate positioning and repeatability, which is critical in automated systems.

- **Fast response time** compared to hydraulic or electric alternatives.

- **No electrical hazards** in explosive or wet environments.

- **Low maintenance** since they rely on compressed air rather than complex electronics or lubrication systems.

4. **Compact & Modular Design** The CRQ series is known for its compact footprint, making it suitable for installations where space is limited. It can be easily integrated into existing pneumatic systems.

5. **High Reliability & Durability** SMC is a well-established brand with a reputation for robust, long-lasting components. The actuator is built for industrial use, resistant to wear and tear under continuous operation.

6. **Adjustable Stroke** The 180 rotation range is sufficient for many applications, and the design allows for fine-tuning of positioning if needed.

7. **Compatibility with SMC Pneumatic Systems** If you already use SMC valves, cylinders, or controls, this actuator will integrate seamlessly, reducing compatibility issues and simplifying maintenance.

8. **Precision & Repeatability** The rack-and-pinion design minimizes slippage, ensuring consistent performance over thousands of cycles.

9. **No Electrical Power Needed** Unlike electric actuators, it does not require electricity, making it safer in certain environments and reducing energy costs.

10. **Easy Installation & Maintenance** SMC components are designed for quick setup, and the actuator can be serviced with basic pneumatic tools.

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1. **High Initial Cost** Pneumatic rotary actuators, especially high-torque models like this one, can be more expensive upfront compared to simpler electric or hydraulic alternatives.

2. **Dependence on Compressed Air Supply** Requires a reliable air compressor and filtration system. Poor air quality (moisture, contaminants) can reduce lifespan and performance.

3. **Noise & Vibration** Pneumatic systems can generate more noise and vibration than electric or hydraulic counterparts, which may be a concern in noise-sensitive environments.

4. **Limited Continuous Operation** While durable, continuous heavy-duty use may lead to wear over time, especially if the air supply is inconsistent or the actuator is not properly lubricated (if applicable).

5. **Less Precise at Low Speeds** Unlike servo motors, pneumatic actuators may struggle with extremely slow, precise movements due to inherent air flow dynamics.

6. **Temperature Sensitivity** Performance can degrade in extreme temperatures, though SMC actuators are generally designed to handle a wide range (typically -10 C to 60 C).

7. **Not Ideal for High-Speed Rotations** While fast for pneumatic standards, it may not match the rotational speeds of electric servo motors in some applications.

8. **Requires Proper Venting & Drainage** Condensation in the air lines can cause issues if not managed properly, adding to maintenance requirements.

9. **Limited Customization** Unlike electric actuators, which can be easily programmed for variable speeds or positions, this pneumatic model has fixed characteristics based on its design.

10. **Potential for Leaks** Over time, seals and connections may wear, leading to air leaks that reduce efficiency and increase maintenance needs.

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### **Conclusion**

The **SMC CRQ2BS20TN-180 rotary actuator** is an excellent choice for applications requiring **high torque, precise rotational motion, and integration with pneumatic systems**. Its **rack-and-pinion mechanism** ensures accuracy, while its **durability and reliability** make it suitable for industrial environments. However, it is **not ideal for applications needing ultra-high speed, extreme precision at low speeds, or where electrical power is preferred**.

If your application involves **heavy-duty material handling, automated assembly, or robotic positioning** where **pneumatic operation is advantageous**, this actuator is a strong contender. Conversely, if **cost efficiency, silence, or high-speed rotation** are critical, an electric servo motor or hydraulic actuator might be a better fit.

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### **Recommendation**

- You need **high torque (200 kgf m) and precise 180 rotation** for industrial automation.

- Your system already uses **SMC pneumatic components**, ensuring compatibility.

- **Fast response time and low maintenance** are priorities.

- The application is **not extremely noise-sensitive** and can accommodate pneumatic operation.

- You require **ultra-high speed or variable-speed rotation** (electric servo motor may be better).

- **Cost is a major concern** (electric actuators or simpler pneumatic models might suffice).

- The environment has **extreme temperature or humidity** that could affect pneumatic performance.

- **Silence is critical** (hydraulic or electric actuators may be quieter).

**Final Verdict:** For most **heavy-duty, high-torque pneumatic applications**, this actuator is a **reliable and efficient choice**, provided the operational environment and system requirements align with its strengths. Always verify compatibility with your existing pneumatic setup and consult SMC s technical documentation for specific installation and maintenance guidelines.

Details:

Features internal cushioning and an angle adjustment mechanism 5 at each end. Compact, low-profile block shape. The double piston design ensures low backlash and smooth operation. Item Specifics: Brand: SMC model: CRQ2BS20TN-180 Type: Rotary Actuator Rack Pinion Oscillation Angle: 180 Torque: 1.8 N m at 0.5 MPa Max Pressure: 1.0 MPa 145 psi Port Size: NPT 1/8 Shaft Single: One used.

Unit was pulled from a working environment.

part #: crq2bs20tn180 price

• $119.99

specifications linactuat:

• brand: Smc
• mpn: Crq2bs20tn-180
• model: Smc Crq2bs20tn-180
• part type: Actuator Pinion Pneumatic Rack
• actuator type: Single Rack
• rotation angle: 180 Degree

seller linactuat:

• # reviews: 253
• city: Hallandale, Florida
• rating: 100.0%

shipping linactuat:

• cost: $30.60
• class: Standard
• type: Calculated
• transit: 7-11 Days
• carrier: USPS
• service: USPS Ground Advantage

offer linactuat:

• sold: 0
• best offers: True
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: May 7, 2026

general linactuat:

• Industrial Automation Motion Controls > Rotary Linear Motion > Rotary Actuators
• condition: Used

returns linactuat:

• policy: No Returns

payments linactuat:

• credit card: Discover
• other
• wallet: Paypal

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