SMC CDG1BN25-300 Hydraulic Pneumatic Cylinders

( Brand: Smc ), ( Manufacturer Part Number: CDG1BN25-300 ), ( Part Type: Hydraulic Pneumatic Cylinder )

Review SMC Cdg1bn25300 Used

The **SMC CDG1BN25-300 (CDG1BN25300)** is a high-performance, compact pneumatic cylinder designed for precision control and reliable operation in industrial automation, packaging, and material handling applications. Part of SMC s renowned **CDG1B series**, this double-acting, rod-end cylinder features a robust **300mm stroke length** and a **25mm bore diameter**, delivering a balanced combination of force and efficiency for medium-duty tasks. Constructed from high-quality **aluminum alloy** for lightweight durability, the cylinder is engineered to withstand frequent cycling while minimizing energy consumption, making it ideal for applications requiring consistent, repeatable motion. Its **standard rod diameter of 16mm** ensures smooth linear movement, reducing wear and tear on connected machinery, while the **sealed, corrosion-resistant design** protects internal components from contaminants, extending operational lifespan in harsh environments. The cylinder incorporates SMC s **patented low-friction piston rod technology**, which enhances energy efficiency by reducing air leakage and improving response times, critical for high-speed automation processes. Equipped with **standard mounting flanges** and **quick-connect fittings**, installation is streamlined, allowing for easy integration into existing pneumatic systems. Whether used in conveyor systems, clamping mechanisms, or automated assembly lines, the **CDG1BN25-300** offers a dependable solution for applications demanding precision, durability, and operational reliability. Its modular design also allows for customization with optional accessories such as **buffering systems, position sensors, or extended rod lengths**, ensuring adaptability to diverse industrial requirements. With SMC s reputation for precision engineering and reliability, this cylinder exemplifies a blend of performance and versatility, making it a trusted choice for engineers and operators seeking a balance between power and efficiency in their pneumatic applications.

The **SMC CDG1BN25-300** is a compact, brushless DC motor often used in automation, robotics, and industrial applications. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros of the SMC CDG1BN20-300 (CDG1BN25300)**

1. **High Precision and Repeatability**

The motor is designed for precise motion control, making it suitable for applications requiring consistent positioning, such as CNC machines, robotic arms, or automated assembly lines. Its closed-loop feedback system (if integrated with an encoder) enhances accuracy.

2. **Compact and Lightweight Design**

The motor is compact, which is advantageous for space-constrained applications. Its lightweight nature reduces inertia, allowing for faster acceleration and deceleration in dynamic systems.

3. **High Torque-to-Size Ratio**

Despite its small size, the motor delivers sufficient torque (up to 300 N cm, depending on the variant) for its class, making it efficient for applications where space is limited but power is required.

4. **Brushless DC (BLDC) Technology**

Brushless motors are more durable than brushed motors because they lack mechanical brushes, which reduces wear and tear, friction, and maintenance requirements. This also leads to longer operational life and lower heat generation.

5. **Compatibility with SMC Automation Systems**

The motor is part of SMC s modular automation lineup, meaning it integrates seamlessly with their controllers, drives, and sensors. This compatibility simplifies system design and reduces integration challenges.

6. **Energy Efficiency**

BLDC motors are generally more energy-efficient than their brushed counterparts due to lower losses from friction and heat. This can lead to cost savings in power consumption over time.

7. **Quiet Operation**

Brushless motors tend to operate more quietly than brushed motors, which is beneficial in applications where noise reduction is important, such as in cleanrooms or precision manufacturing.

8. **Wide Range of Speed Control**

With an appropriate driver or inverter, the motor can be controlled over a broad speed range, allowing for flexibility in different applications (e.g., slow, precise movements or high-speed operations).

9. **Easy Maintenance**

Since there are no brushes, maintenance is minimal. The primary maintenance concerns are typically related to cooling, lubrication of bearings, and ensuring cleanliness in the operating environment.

10. **Suitable for High-Speed Applications**

The motor can achieve high rotational speeds (depending on the gear ratio or direct drive configuration), making it suitable for applications like conveyor systems, spinners, or high-speed indexing tables.

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### **Cons of the SMC CDG1BN25-300 (CDG1BN25300)**

1. **Limited Torque at Low Speeds**

Like many small BLDC motors, the CDG1BN25-300 may struggle to maintain high torque at very low speeds due to the nature of brushless motor control. This can require additional gearing or a different motor selection for applications needing high torque at standstill.

2. **Requires External Driver/Inverter**

The motor cannot be driven directly from a standard power supply; it needs a dedicated BLDC driver or inverter to control speed, direction, and torque. This adds complexity and cost to the system.

3. **Sensitivity to Voltage and Current Fluctuations**

BLDC motors can be sensitive to voltage spikes or fluctuations, which may cause overheating, reduced performance, or even damage if not properly managed. A stable power supply or appropriate filtering may be necessary.

4. **Higher Initial Cost Compared to Brushed Motors**

While brushless motors are more cost-effective in the long run due to lower maintenance, the upfront cost of a BLDC motor, driver, and associated components (e.g., encoders, feedback devices) can be higher than that of a brushed motor system.

5. **Cooling Requirements**

Even though BLDC motors generate less heat than brushed motors, they still require adequate cooling, especially during continuous operation or high-load conditions. Poor cooling can lead to overheating and reduced lifespan.

6. **Complex Control System**

Controlling a BLDC motor requires more sophisticated electronics (e.g., microcontrollers, PWM signals, or dedicated motor drivers) compared to brushed motors, which can be simpler to interface with basic controllers.

7. **Limited Overload Capacity**

The motor has a specified continuous torque rating, and exceeding it (even briefly) can cause overheating or damage. Unlike some brushed motors, BLDC motors may not handle occasional overloads as gracefully.

8. **Dependence on Encoders for Closed-Loop Control**

For precise applications, the motor often requires an encoder or other feedback device to achieve closed-loop control. This adds cost and complexity to the system.

9. **Potential for Resonance Issues**

In high-speed applications, the motor and its mechanical load (e.g., belts, gears, or linkages) may experience resonance or vibration issues, which can affect performance and longevity. Damping or tuning may be required.

10. **Limited Availability of Spare Parts**

While SMC is a reputable brand, spare parts for specific motor models may not always be readily available compared to more universally used motors. This could pose challenges in maintenance or repairs.

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### **Conclusion**

The **SMC CDG1BN25-300** is a well-suited motor for applications requiring **precision, compactness, and reliability**, particularly in automation, robotics, or industrial settings where space is limited but performance is critical. Its brushless design offers advantages in durability, efficiency, and low maintenance, making it a strong choice for long-term use. However, its limitations such as torque constraints at low speeds, the need for external drivers, and sensitivity to electrical fluctuations must be carefully considered when selecting it for a specific application.

If your application demands **high precision, quiet operation, and minimal maintenance**, this motor is an excellent choice. Conversely, if your application requires **high torque at low speeds, simplicity, or budget constraints**, you may need to evaluate alternative motors (e.g., brushed DC, servo motors with built-in gearing, or stepper motors).

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### **Recommendation**

- You need a **compact, high-precision motor** for automation or robotics.

- Your system can accommodate an **external BLDC driver** and feedback devices (e.g., encoders).

- You prioritize **low maintenance, energy efficiency, and quiet operation**.

- The application involves **moderate to high speeds** with controlled torque requirements.

- You require **high torque at very low speeds** (e.g., for clamping or heavy lifting). In this case, a **geared servo motor** or a **brushed DC motor with gearing** might be more suitable.

- Your budget is tight, and you can tolerate slightly higher maintenance. A **brushed DC motor** or a **stepper motor** could be more cost-effective.

- Your system lacks the infrastructure for **complex motor control** (e.g., no dedicated driver or encoder compatibility).

- You need **overload protection** or **simpler integration** with existing systems.

- Use a **compatible SMC driver** (e.g., SMC s own motor drivers) for optimal performance.

- Ensure proper **cooling** (e.g., heat sinks, fans) if operating at or near maximum load.

- Consider **gearing or mechanical amplification** if torque requirements exceed the motor s capabilities at low speeds.

- Implement **voltage stabilization** to protect the motor from electrical fluctuations.

- Always conduct **bench tests** to verify performance under expected load conditions.

- Monitor **temperature and current draw** during operation to ensure the motor operates within safe limits.

- Consult SMC s technical documentation or a specialist if integrating the motor into a custom system.

In summary, the **SMC CDG1BN25-300** is a robust and capable motor for the right application, but its suitability depends on aligning its strengths with your specific requirements. If your project aligns well with its design philosophy, it will likely deliver reliable performance with minimal issues.

Details:

Call to use a shipping service other than the ones listed. SMC CDG1BN25-300 / CDG1BN25300 USED PNEUMATIC CYLINDER, DOUBLE ACTING, SINGLE ROD, CG1 SERIES, W/ AUTO SWITCH, RUBBER BUMPER, 25mm BORE, 300 STROKE, W/O ROD BOOT. 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.

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part #: cdg1bn25300 prices

• $27.00-$160.00

specifications hydraulicylind:

• brand: Smc
• mpn: Cdg1bn25-300
• part type: Hydraulic Pneumatic Cylinder

seller hydraulicylind:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• # reviews: 193462
• rating: 99.6%

shipping hydraulicylind:

• type: Fixed
• service: Standard
• cost: $12.90
• transit: 23-35 Days
• class: Standard

general hydraulicylind:

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

payments hydraulicylind:

• wallet: Apple-pay
• credit card: Discover
• other

returns hydraulicylind:

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

offer hydraulicylind:

• options: Ship-to-home
• sold: 0
• quantity: 1
• started: March 7, 2026
• availability: In Stock

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