SMC CDQMB40TN-30 Cylinder 40MM 30MM

( Brand: Smc ), ( Manufacturer Part Number: CDQMB40TN-30 ), ( Part Type: Cylinder Guide )

Review SMC Compact Cylinder 40mm Bore Sized Guide 30mm Stroke Used

The **SMC CDQMB40TN-30** is a high-performance, compact pneumatic cylinder designed for precision-driven applications where reliability, efficiency, and compact form factor are paramount. This **40mm bore, 30mm stroke** double-acting cylinder belongs to SMC s **CDQM series**, renowned for its robust construction and seamless integration into automated systems. Engineered with a **tubular aluminum body**, the CDQMB40TN-30 offers an optimal balance between strength and weight reduction, making it ideal for applications where space is limited yet high force output is required. Its **30mm stroke** provides a precise, controlled movement range, perfect for tasks demanding exact positioning, such as in packaging machinery, material handling, or light-duty assembly lines. The cylinder features a **standard M10 threaded rod end** on both sides, ensuring compatibility with a wide range of mounting brackets, grippers, and actuators, while its **integrated magnetic piston rod** allows for easy position sensing without additional sensors, simplifying system design and reducing installation complexity. Constructed with **high-quality stainless steel components**, including a corrosion-resistant rod and durable seals, this cylinder delivers exceptional durability in both cleanroom and industrial environments. The **double-acting design** ensures consistent force in both extension and retraction cycles, while the **low-friction piston rod** minimizes energy consumption and wear over extended use. With a **maximum operating pressure of 8 bar (116 psi)**, the CDQMB40TN-30 delivers a **peak force of approximately 1,256 N (282 lbs)** during extension and retraction, making it suitable for applications requiring moderate to light-duty pushing, clamping, or holding functions. Its **compact footprint** and **modular design** allow for easy customization, including the addition of optional accessories like cushioning, magnetic piston rods, or custom mounting flanges. Whether integrated into a high-speed production line or a precision-driven automation system, the **SMC CDQMB40TN-30** exemplifies reliability, precision, and versatility, making it a dependable choice for engineers and operators seeking a high-performance pneumatic solution.

The **SMC CDQMB40TN-30** is a pneumatic cylinder designed for general-purpose applications, offering a balance of performance and cost. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the SMC CDQMB40TN-30**

1. **Reliability and Brand Reputation**

SMC is a well-established manufacturer in the pneumatic industry, known for producing durable and high-quality components. Their cylinders are widely used in industrial automation, manufacturing, and packaging applications, where reliability is critical. The CDQMB series is part of their standard line, which benefits from extensive testing and refinement.

2. **Standardized Design and Compatibility**

The cylinder follows industry-standard dimensions (40mm bore, 30mm stroke) and mounting configurations, making it easy to integrate into existing systems. It is compatible with SMC s own valves, fittings, and accessories, simplifying system design and maintenance. Many third-party components (e.g., seals, rods) are also interchangeable with other reputable brands.

3. **Good Performance for General Applications**

The cylinder is designed for moderate to heavy-duty tasks, such as clamping, pressing, or linear motion in assembly lines. Its 40mm bore provides sufficient force for many standard applications, while the 30mm stroke offers flexibility for tasks requiring limited travel. The double-acting design (if applicable) allows for precise control in both directions.

4. **Maintenance-Friendly**

- **Sealed rod guides** to reduce wear and extend service life.

- **Accessible end caps** for quick seal replacement.

- **Lubrication points** (if applicable) to reduce friction.

Replacement parts are readily available, and SMC provides technical support for troubleshooting.

5. **Cost-Effective for Standard Needs**

While not the most premium option, the CDQMB40TN-30 offers a reasonable price point for its performance. It is a cost-effective choice for businesses that need a reliable, off-the-shelf cylinder without custom engineering. The initial investment is lower than high-end or custom cylinders, and operational costs (e.g., air consumption) are manageable for typical applications.

6. **Quiet Operation**

SMC cylinders are generally designed to minimize noise, which is beneficial in cleanroom environments or facilities where noise reduction is a priority. The CDQMB series includes features like cushioned strokes to dampen impact and reduce decibel levels.

7. **Wide Availability**

As a standard product, the cylinder is stocked by many distributors and can be ordered quickly, reducing lead times. This is advantageous for projects with tight deadlines or just-in-time manufacturing requirements.

8. **Energy Efficiency**

The cylinder s design is optimized for efficient air consumption, which can lower operational costs over time. SMC s focus on leak-proof connections and minimal internal friction contributes to this efficiency.

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### **Cons of the SMC CDQMB40TN-30**

1. **Limited Customization**

The cylinder is a standard model with fixed dimensions (40mm bore, 30mm stroke) and mounting options. If your application requires non-standard specifications (e.g., longer stroke, specialized rod coatings, or custom end fittings), you may need to source a different model or modify the cylinder, which can increase costs and complexity.

2. **Not Suitable for Extreme Conditions**

- **High-temperature** applications (e.g., near heat sources or in ovens).

- **Corrosive environments** (e.g., exposure to chemicals, moisture, or salt air) without additional protective coatings or seals.

- **High-speed or high-impact** applications where wear and tear could accelerate failure.

For such conditions, specialized cylinders (e.g., stainless steel, coated rods, or reinforced seals) would be required.

3. **Force Limitations**

The 40mm bore generates a maximum force of approximately **11.3 kgf (111 N)** at 6 bar (assuming single-acting; double-acting would double this). While sufficient for many tasks, it may be insufficient for heavy-duty applications requiring higher force. In such cases, a larger cylinder (e.g., 50mm or 63mm bore) would be necessary.

4. **Dependence on Air Supply Quality**

Like all pneumatic cylinders, the CDQMB40TN-30 requires clean, dry, and oil-free compressed air to function optimally. Poor air quality can lead to:

- **Seal wear** (contaminants abrasive particles).

- **Reduced efficiency** (moisture causing condensation).

- **Increased maintenance** (oil or debris clogging valves).

If your air system lacks proper filtration and drying, additional equipment (e.g., air dryers, filters) will be needed, adding to the system cost.

5. **Potential for Leaks Over Time**

- **Rod wear** (from external abrasion or internal friction).

- **Seal degradation** (from age, temperature fluctuations, or improper lubrication).

While SMC cylinders are durable, leaks may require periodic maintenance or seal replacements, which can disrupt production if not managed proactively.

6. **Limited Stroke Adjustability**

The 30mm stroke is fixed. If your application requires a longer or shorter stroke, you would need to select a different cylinder model or modify the system (e.g., adding linkages or mechanical extensions), which may not be practical for all setups.

7. **Weight and Space Considerations**

The cylinder adds weight to your system, which may require reinforcement of mounting surfaces or additional structural support. In space-constrained environments, the 40mm diameter and 30mm stroke may not fit without adjustments.

8. **Warranty and Support Limitations**

While SMC offers warranties, they typically exclude damage from misuse, improper installation, or environmental factors. If the cylinder fails due to such reasons, repair or replacement may not be covered. Additionally, support for older models may diminish over time, potentially complicating troubleshooting.

---

### **Conclusion**

The **SMC CDQMB40TN-30** is a solid choice for businesses needing a **reliable, cost-effective, and easy-to-integrate pneumatic cylinder** for general-purpose applications. Its strengths lie in its **durability, compatibility with SMC s ecosystem, and ease of maintenance**, making it ideal for standard industrial tasks such as clamping, pressing, or linear motion in controlled environments.

However, it is **not suitable for high-force, high-speed, or extreme-condition applications**. Its fixed dimensions and lack of customization also limit its versatility for non-standard setups. If your application requires **higher force, longer strokes, or specialized environmental resistance**, you may need to consider alternative models (e.g., larger bore sizes, stainless steel cylinders, or custom-engineered solutions).

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### **Recommendation**

- You need a **standard, reliable cylinder** for moderate-force applications (e.g., assembly lines, packaging, or light material handling).

- Your system already uses **SMC components**, ensuring compatibility and simplified maintenance.

- Your environment is **clean and controlled** (not exposed to extreme temperatures, corrosive substances, or high impacts).

- You prioritize **cost efficiency** and **quick availability** over customization.

- The **40mm bore and 30mm stroke** meet your force and travel requirements.

- You require **higher force** (e.g., >10 kgf at 6 bar) Upgrade to a **50mm or 63mm bore cylinder**.

- Your application involves **harsh conditions** (e.g., high heat, chemicals, or abrasive materials) Opt for a **stainless steel or coated cylinder** (e.g., SMC s CDQMB series with special finishes).

- You need **longer strokes or custom dimensions** Evaluate **extended-stroke models** or **custom cylinders**.

- Your air supply is **unclean or unregulated** Invest in **air filtration and drying systems** to protect the cylinder.

- You require **precise positioning or high-speed operation** Consider **servo-controlled cylinders** or **higher-end pneumatic systems**.

For most **standard industrial applications** where reliability and ease of use are prioritized, the **SMC CDQMB40TN-30 is a well-suited and cost-effective choice**. However, always verify that its specifications align with your exact requirements to avoid potential performance gaps. If in doubt, consult with an SMC distributor or application engineer to confirm compatibility with your system.

Details:

These services include: UPS 3 Day Select. Prices for these options may differ from standard ground shipping. UPS 2 Day Air AM.

The cost of combined shipping depends on weight, location buyer and size box. UPS Next Day AM. Item is sold as pictured. SMC CDQMB40TN-30 Compact Cylinder, 40mm Bore Sized Guide, 30mm Stroke.

part #: cdqmb40tn30 prices

• $39.95-$75.99

specifications hydraulicylind:

• brand: Smc
• mpn: Cdqmb40tn-30
• part type: Cylinder Guide

shipping hydraulicylind:

• cost: $14.10
• service: USPS Ground Advantage, UPS Ground, USPS Priority Mail, UPS Next Day Air
• carrier: USPS, UPS
• class: Standard, Expedited, One-day
• transit: 2-6 Days
• type: Calculated

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seller hydraulicylind:

• # reviews: 29028
• city: Kawkawlin, Michigan
• rating: 100.0%

offer hydraulicylind:

• availability: In Stock
• sold: 0
• best offers: True
• quantity: 1
• started: May 21, 2026
• options: Ship-to-home

general hydraulicylind:

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

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