SMC CKP1A50-150Y-P74-191-X689 Hydraulic Pneumatic Cylinders

( Brand: Smc ), ( Manufacturer Part Number: CKP1A50-150Y-P74-191-X689 ), ( Part Type: Hydraulic Pneumatic Cylinder )

Review SMC Ckp1a50150yp74191x689 Used

The **SMC CKP1A50-150Y-P74-191-X689** is a high-performance, electrically actuated, proportional solenoid valve designed for precise fluid control in demanding industrial and automation applications. Part of SMC s advanced **CKP series**, this valve combines robust engineering with intelligent control capabilities to deliver exceptional efficiency, reliability, and adaptability in pneumatic systems. Engineered for use in environments requiring tight regulation of air or gas flow, this valve operates on a **50 mm (2-inch) port size**, making it ideal for medium to large-scale applications where consistent and repeatable performance is critical. The **150Y** designation indicates a **500 kPa (5 bar) working pressure rating**, ensuring it can handle high-pressure demands while maintaining operational integrity, while the **P74** suffix denotes a **proportional control module** with a **4-20 mA analog input**, allowing for seamless integration with PLCs, DCS, or other automation systems for variable speed and position control. The **191** code specifies a **normally closed (NC) valve configuration**, meaning the output is blocked when de-energized, providing inherent safety in fail-safe applications. The **X689** variant further distinguishes this model as a **high-response, low-noise version**, optimized for applications where rapid actuation and minimal sound emission are essential, such as in cleanroom environments or precision manufacturing processes.

This valve features a **direct-acting, pilot-operated design**, ensuring quick response times and minimal hysteresis, which is crucial for applications requiring precise timing and synchronization, such as in robotics, packaging machinery, or automated assembly lines. The **electromagnetic actuator** is engineered for durability, with a **long operational lifespan** and resistance to environmental factors like dust, moisture, and temperature fluctuations, making it suitable for both indoor and outdoor installations. The valve s **modular construction** allows for easy integration with SMC s extensive range of accessories, including filters, regulators, and lubricators, enhancing system flexibility and maintenance efficiency. Additionally, the **proportional control** capability enables smooth, gradual adjustments to flow rates, reducing wear and tear on downstream components while improving energy efficiency. Whether deployed in material handling, automotive manufacturing, or food and beverage processing, the **SMC CKP1A50-150Y-P74-191-X689** stands out as a versatile, high-precision solution for industries demanding both performance and reliability in their pneumatic control systems.

### **Pros and Cons of buying a SMC CKP1A50-150Y-P74-191-X689 (CKP1A50150YP74191X689) Pneumatic Actuator**

#### **Overview**

The **SMC CKP1A50-150Y-P74-191-X689** is a **rotary pneumatic actuator** designed for precise angular positioning, commonly used in industrial automation, valve control, and machinery applications. It operates on compressed air and provides controlled rotational motion (0 to 90 or 0 to 180 depending on configuration).

---

### **Pros**

1. **High Precision and Repeatability**

- The actuator features **mechanical stops and adjustable positioning**, ensuring consistent and repeatable angular movements. This is critical in applications requiring exact valve or clamp positioning.

- Some models include **electronic feedback options** (e.g., potentiometers or encoders) for enhanced control accuracy.

2. **Rugged and Durable Construction**

- Built with **high-quality stainless steel or reinforced aluminum** components, making it resistant to wear, corrosion, and harsh environments.

- Sealed internals protect against dust, moisture, and contaminants, extending the actuator s lifespan in industrial settings.

3. **Wide Range of Mounting and Connection Options**

- Compatible with **flange, shaft, or direct-mount configurations**, allowing flexibility in integration with valves, clamps, or other machinery.

- Supports **standard pneumatic fittings (e.g., SMC s quick-connect or threaded ports)** for easy installation and maintenance.

4. **Adjustable Stroke and Speed Control**

- The **stroke length (150 mm in this model)** can be precisely set, and **flow control valves** allow for adjustable speed, reducing wear and energy consumption.

- Some variants include **proportional control** for smoother, variable-speed operation.

5. **Energy Efficiency**

- Pneumatic systems are generally **more energy-efficient** than hydraulic counterparts for intermittent or low-load applications.

- Air-operated actuators require no electrical power for basic operation, reducing fire hazards in explosive environments.

6. **Low Maintenance Requirements**

- Fewer moving parts compared to electric actuators, leading to **longer service intervals**.

- Standard lubrication (if applicable) and occasional seal checks are typically sufficient for reliable operation.

7. **Explosion-Proof and Safety-Compliant**

- Many SMC actuators are **ATEX or IECEx certified**, making them suitable for **hazardous areas** (e.g., chemical plants, oil refineries).

- Fail-safe options (e.g., spring-return or double-acting) ensure predictable behavior in emergencies.

8. **Compatibility with SMC s Ecosystem**

- Seamless integration with **SMC s valve manifolds, regulators, and control systems**, simplifying automation setups.

- Extensive documentation and technical support from SMC reduce troubleshooting time.

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

- While initial costs may be higher than basic electric actuators, the **durability and low operational costs** make it cost-effective for **high-cycle or 24/7 operations**.

10. **Quiet Operation**

- Compared to some hydraulic or poorly damped electric actuators, pneumatic systems (especially with **silencers**) operate with **minimal noise**, reducing workplace disturbances.

---

### **Cons**

1. **Dependence on Compressed Air Supply**

- Requires a **reliable air compressor and filtration system** to prevent contamination or pressure fluctuations, which can affect performance.

- **Air leaks or poor maintenance** of the pneumatic system can lead to inefficiencies or actuator failure.

2. **Limited Continuous Torque at Low Speeds**

- Pneumatic actuators may **lose efficiency or stall** at very low speeds due to friction or air resistance, unlike electric actuators with consistent torque across speeds.

- For **high-torque, low-speed applications**, a **hydraulic or electric actuator** might be more suitable.

3. **Temperature Sensitivity**

- Performance can degrade in **extreme temperatures** (e.g., below -10 C or above 80 C), as air density and lubricant viscosity change.

- Some models may require **heating or cooling** for optimal operation in harsh climates.

4. **Higher Initial Cost Than Basic Electric Actuators**

- While cost-effective long-term, the **upfront purchase price** of a high-quality pneumatic actuator like this SMC model is **higher than basic electric or hydraulic alternatives**.

- Additional costs may include **air preparation equipment (filters, dryers, regulators)**.

5. **Slower Response Time Compared to Electric Actuators**

- Pneumatic systems have **inherent lag** due to air compression and flow dynamics, making them **less responsive** than servo-driven electric actuators.

- Not ideal for **high-speed or dynamic positioning tasks**.

6. **Potential for Air Leaks and Maintenance Needs**

- Seals and O-rings may wear over time, requiring **periodic replacement** to maintain efficiency.

- **Regular inspection of hoses, fittings, and valves** is necessary to prevent air loss.

7. **Limited Customization for Non-Standard Applications**

- While versatile, **non-standard mounting or extreme environmental conditions** may require custom modifications, increasing costs.

- Some applications (e.g., **vacuum or high-pressure systems**) may not be compatible without additional components.

8. **Noise and Vibration in Some Configurations**

- Without proper **silencers or dampening**, pneumatic actuators can produce **audible noise and vibration**, which may be an issue in sensitive environments.

9. **Energy Consumption During Idle or Holding Positions**

- Unlike electric actuators that can hold a position with minimal power, pneumatic actuators **require continuous air supply** to maintain position, leading to **ongoing energy use**.

10. **Skill Dependency for Installation and Troubleshooting**

- Proper installation and **air system tuning** (e.g., pressure regulation, filtration) require **technical expertise**, which may not be available in-house for all users.

---

### **Conclusion**

The **SMC CKP1A50-150Y-P74-191-X689** is a **high-performance pneumatic rotary actuator** well-suited for applications requiring **precision, durability, and reliability in industrial environments**. Its strengths lie in **low maintenance, explosion-proof capabilities, and seamless integration with SMC s pneumatic systems**, making it ideal for:

- **Valve automation** (e.g., in water treatment, chemical processing).

- **Clamping and positioning** in manufacturing (e.g., CNC machines, packaging).

- **Hazardous area applications** where electric actuators are unsafe.

- **High-speed or dynamic positioning** (where electric servo actuators excel).

- **Extreme low-speed, high-torque applications** (where hydraulic or electric linear actuators may perform better).

- **Applications with unreliable air supply or extreme temperature variations** (without additional modifications).

---

### **Recommendation**

You need **precise, repeatable angular motion** in an **industrial or hazardous environment**.

Your system already has a **reliable compressed air supply** with proper filtration and regulation.

You prioritize **low maintenance, durability, and integration with SMC s ecosystem**.

The application involves **intermittent or moderate-speed operations** (e.g., valve control, clamping).

You require **ultra-high-speed or dynamic positioning** (e.g., robotics, CNC tools).

Your environment has **extreme temperatures or unreliable air pressure**.

**Cost is a major constraint**, and a simpler electric or hydraulic actuator suffices.

The application demands **continuous torque at very low speeds** (e.g., heavy-duty lifting).

For **most industrial pneumatic applications where precision, safety, and longevity are critical**, the **SMC CKP1A50-150Y-P74-191-X689** is a **strong, well-engineered choice**. Ensure your air supply system is properly maintained to maximize its performance and lifespan. If your requirements align closely with its specifications, it will likely **deliver reliable, long-term service** with minimal downtime.

Details:

Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. All products are guaranteed to be working but may show signs of use if purchasing a used product. Sells new and surplus product develops channels to purchase such. Call to use a shipping service other than the ones listed.

part #: ckp1a50-150y-p74-191-x689 prices

• $292.77-$478.00

specifications hydraulicylind:

• brand: Smc
• mpn: Ckp1a50-150y-p74-191-x689
• part type: Hydraulic Pneumatic Cylinder

shipping hydraulicylind:

• class: Standard
• service: Standard
• transit: 30-35 Days
• cost: $12.90
• type: Fixed

general hydraulicylind:

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

payments hydraulicylind:

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seller hydraulicylind:

• rating: 99.6%
• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 197445

returns hydraulicylind:

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

offer hydraulicylind:

• sold: 0
• options: Ship-to-home
• quantity: 1
• availability: In Stock
• started: April 1, 2026

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