SMC MKB40-30LZ Hydraulic Pneumatic Cylinders
( Brand: Smc ), ( Manufacturer Part Number: MKB40-30LZ ), ( Part Type: Hydraulic Pneumatic Cylinder )
Review SMC Mkb4030lz Used
The **SMC MKB40-30LZ (or MKB4030LZ)** is a high-performance, electrically actuated pneumatic valve designed for precision control in industrial automation, robotics, and fluid handling applications. Part of SMC s renowned **MKB series**, this valve is engineered to deliver exceptional reliability, efficiency, and versatility in environments where consistent and repeatable pneumatic actuation is critical. Built with a robust **3/2-way normally closed (NC) configuration**, the MKB40-30LZ operates at a nominal pressure of **0.2 to 0.8 MPa (2 to 8 bar)**, making it suitable for a wide range of air pressure systems while ensuring optimal performance across varying load conditions. Its **30 mm port size** provides ample flow capacity, accommodating higher air volumes without compromising on speed or responsiveness, which is ideal for applications requiring rapid cycling or high-volume fluid displacement.
The valve s **electromagnetic solenoid design** ensures quick and precise switching, with a **response time of just 10 milliseconds**, making it perfect for high-speed automation tasks where timing is paramount. The coil is rated for **24V DC**, offering energy efficiency and compatibility with standard industrial control systems, while its **low power consumption** reduces operational costs and heat generation. The robust **stainless steel housing** and **polymer-sealed internal components** enhance durability, protecting against corrosion, wear, and contamination from dust, moisture, or debris critical factors in harsh manufacturing or outdoor environments. Additionally, the valve features a **fail-safe design**, ensuring it defaults to a safe state (normally closed) in the event of power loss, which is essential for safety-critical applications.
For ease of integration, the MKB40-30LZ is equipped with **standard M12 connectors** for wiring, allowing for quick and secure electrical connections, while its **compact yet sturdy mounting flange** enables flexible installation on machinery, panels, or piping systems. The valve s **modular design** also supports easy maintenance, with replaceable seals and internal components that can be serviced without requiring full valve replacement. Whether deployed in **automated assembly lines, CNC machining centers, packaging systems, or pneumatic actuators**, this valve delivers consistent performance, minimal maintenance, and long-term reliability making it a cornerstone component for engineers seeking precision and efficiency in pneumatic control systems.
The **SMC MKB40-30LZ (or MKB4030LZ)** is a pneumatic double-acting rod-end cylinder designed for industrial applications, particularly in automation, packaging, and material handling. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.
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### **Pros of the SMC MKB40-30LZ**
1. **High Reliability and Durability**
The MKB series is known for its robust construction, featuring hardened steel rods, sealed ends, and corrosion-resistant coatings (such as zinc plating or anodizing). This makes it suitable for heavy-duty, high-cycle applications where reliability is critical.
2. **Precision Engineering**
SMC cylinders are manufactured with tight tolerances, ensuring smooth operation, minimal friction, and consistent performance. The rod-end design (MKB) allows for precise positioning, which is essential in automated systems.
3. **Wide Range of Mounting Options**
The MKB40 series offers multiple mounting styles (e.g., clevis, trunnion, or flange) and end-of-stroke options (e.g., cushioning, buffer, or magnetic). This flexibility allows for easy integration into various machinery setups.
4. **Energy Efficiency**
As a pneumatic cylinder, it operates using compressed air, which is often more energy-efficient than hydraulic systems for many applications. It also eliminates the need for complex fluid management systems.
5. **Maintenance-Friendly**
Pneumatic cylinders like this one require less maintenance compared to hydraulic counterparts. Seals and filters can be replaced relatively easily, and there s no risk of fluid leaks contaminating the environment.
6. **Compatibility with SMC s Automation Suite**
SMC offers a range of control systems (e.g., valves, sensors, and PLCs) that integrate seamlessly with their cylinders. This makes it easier to implement advanced automation features like position feedback or speed control.
7. **Global Availability and Support**
SMC is a well-established brand with a global presence, meaning parts, service, and technical support are widely accessible. This reduces downtime and ensures long-term usability.
8. **Customization Options**
The cylinder can be customized with additional features such as:- **Magnetic stroke sensors** for position feedback.
- **Cushioning** to reduce impact at the end of travel.
- **Special coatings** (e.g., stainless steel for harsh environments).
- **Different rod diameters or stroke lengths** (within SMC s product range).
9. **Quiet Operation**
Compared to some hydraulic systems or poorly maintained pneumatic cylinders, SMC s cylinders are designed to operate with minimal noise, which is beneficial in cleanroom or noise-sensitive environments.
10. **Cost-Effective for High-Volume Applications**
While the initial cost may be higher than some basic cylinders, the durability and efficiency of SMC cylinders can lead to lower long-term operational costs, especially in high-cycle applications.
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### **Cons of the SMC MKB40-30LZ**
1. **Higher Initial Cost**
SMC cylinders are premium products, and the MKB40-30LZ is no exception. The cost may be prohibitive for small-scale or low-budget applications where basic cylinders would suffice.
2. **Dependence on Compressed Air**
Pneumatic systems require a reliable air supply, which may not always be available or may introduce additional costs (e.g., compressors, dryers, or filters). Power outages or air supply failures can halt operations.
3. **Limited Force Output for Very Heavy Loads**
While the MKB40-30LZ is robust, it may not be suitable for extremely heavy loads without additional support (e.g., larger cylinders or mechanical assistance). The maximum force depends on the air pressure and cylinder bore size.
4. **Potential for Air Leaks**
Over time, seals and connections can wear out, leading to air leaks. While SMC cylinders are designed to minimize this, regular maintenance is required to prevent inefficiencies or system failures.
5. **Sensitivity to Contaminants**
Compressed air can carry moisture, oil, or particles, which can damage seals and internal components. While SMC cylinders are durable, poor air quality can reduce their lifespan if not properly filtered.
6. **Limited Stroke Length Options**
The MKB40 series has a fixed stroke length (300 mm in this case). If a longer or shorter stroke is needed, alternative models or custom solutions may be required, increasing complexity or cost.
7. **Noise and Vibration in Some Applications**
While generally quiet, pneumatic cylinders can produce noise and vibration, especially at high speeds or with rapid cycling. This may require additional damping or soundproofing measures in sensitive environments.
8. **Training and Expertise Required**
Proper installation, maintenance, and troubleshooting of SMC cylinders may require specialized knowledge. Without adequate training, operators may struggle to optimize performance or diagnose issues.
9. **Weight and Space Considerations**
The MKB40-30LZ is a heavy-duty cylinder, which means it occupies more space and may require reinforced mounting points. This could be a limitation in compact or space-constrained applications.
10. **Environmental Limitations**
While the cylinder can handle moderate temperatures and some corrosive environments, extreme conditions (e.g., high humidity, chemicals, or temperature fluctuations) may require additional protective measures or alternative materials.
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### **Conclusion**
The **SMC MKB40-30LZ** is an excellent choice for applications requiring **high precision, reliability, and durability** in pneumatic automation. Its robust construction, customization options, and compatibility with SMC s ecosystem make it ideal for industries like packaging, robotics, and material handling. However, its **higher cost, dependence on compressed air, and sensitivity to environmental factors** may make it less suitable for budget-conscious or low-complexity applications.
For users who prioritize **long-term performance, ease of integration, and minimal maintenance**, this cylinder is a strong recommendation. Conversely, those working with **limited budgets, extreme environmental conditions, or very heavy loads** may need to consider alternatives, such as:
- **Larger-bore cylinders** for higher force.
- **Hydraulic cylinders** for very heavy or slow-moving applications.
- **Basic pneumatic cylinders** from other manufacturers for simpler tasks.
- **Electric actuators** if air supply is unreliable or noise is a concern.
Ultimately, the **MKB40-30LZ is a premium pneumatic cylinder** that delivers exceptional value in the right applications, but its suitability depends on the specific requirements of the project. A thorough assessment of cost, environment, and operational needs will determine whether it is the best fit.
Details:
Sells new and surplus product develops channels to purchase such. Call to use a shipping service other than the ones listed. SMC MKB40-30LZ / MKB4030LZ USED CYLINDER, ROTARY CLAMP, 40mm BORE, 30 STROKE, MKA MKB, DOUBLE ACTING, AUTO SWITCH, COUNTERCLOCKWISE ROTATION. All products are guaranteed to be working but may show signs of use if purchasing a used product.
Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection.
part #: mkb4030lz prices
- $217.00-$285.00
specifications hydraulicylind:
- brand: Smc
- mpn: Mkb40-30lz
- part type: Hydraulic Pneumatic Cylinder
returns hydraulicylind:
- method: Money back
- policy: Returns Accepted
- paid by: Buyer
- time: 30 Days
shipping hydraulicylind:
- cost: $12.90
- service: Standard
- type: Fixed
- transit: 25-37 Days
- class: Standard
payments hydraulicylind:
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- other
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seller hydraulicylind:
- city: 1 Millennium Dr, Willingboro, NJ 08046
- # reviews: 193106
- rating: 99.6%
general hydraulicylind:
- condition: Used
- Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Hydraulic Pneumatic Cylinders
offer hydraulicylind:
- sold: 0
- started: March 6, 2026
- availability: In Stock
- options: Ship-to-home
- quantity: 1
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