SMC AR30K-03-1-B Hydraulics Pneumatics

( Brand: Smc ), ( Manufacturer Part Number: AR30K-03-1-B ), ( Part Type: Hydraulic Pneumatic )

Review SMC Ar30k031b Used

The **SMC AR30K-03-1-B (AR30K031B)** is a high-performance, compact, and versatile **3/8" (9.5mm) air-operated double-acting pneumatic cylinder** designed for industrial automation, material handling, and precision motion control applications. Engineered with SMC s signature reliability and precision, this cylinder belongs to the **AR30K series**, a robust line of pneumatic actuators optimized for demanding environments where durability, efficiency, and consistent performance are critical. The **AR30K-03-1-B** features a **3/8" (9.5mm) bore diameter**, making it ideal for lighter to moderate load applications where space is limited but force and speed are essential. Its **double-acting design** ensures bidirectional motion, allowing for controlled extension and retraction, which is crucial for applications requiring precise positioning, clamping, or indexing.

Constructed from **high-strength steel**, the cylinder s body is heat-treated and anodized for enhanced corrosion resistance, ensuring longevity even in harsh industrial settings where exposure to moisture, dust, or chemicals is common. The **standard rod diameter of 16mm** provides a balanced strength-to-weight ratio, while the **stroke length of 300mm (11.8 inches)** offers ample travel for a wide range of tasks, from simple pushing/pulling operations to more complex assembly or packaging processes. The cylinder s **sealed rod end** prevents contamination from entering the internal components, reducing wear and extending maintenance intervals a key advantage in cleanroom or food-processing environments where hygiene is paramount.

For ease of integration, the **AR30K-03-1-B** is equipped with **standard M10 threaded ports** on both ends, compatible with SMC s extensive range of fittings, valves, and accessories, ensuring seamless connectivity to pneumatic control systems. The cylinder s **magnetic end caps** (standard on the rod side) allow for simple and reliable position sensing, enabling integration with proximity switches or limit switches for automated feedback control. Additionally, the **built-in cushioning system** on both the rod and cap sides minimizes impact forces at the end of strokes, reducing noise and mechanical stress on connected components, thereby prolonging the life of both the cylinder and the machinery it operates.

SMC s **AR30K series** is renowned for its **energy efficiency**, achieved through optimized internal sealing and minimal internal leakage, which reduces air consumption and operational costs. The cylinder s **low-friction piston design** ensures smooth, consistent motion with minimal hysteresis, making it suitable for applications requiring high repeatability, such as robotic assembly, conveyor systems, or automated testing equipment. The **AR30K-03-1-B** also adheres to strict international standards, including **ISO 6432**, ensuring compatibility with global pneumatic systems and regulatory requirements.

Whether deployed in **automotive manufacturing, electronics assembly, packaging machinery, or laboratory automation**, this cylinder delivers **reliable, high-speed actuation** with minimal maintenance. Its compact yet sturdy design allows for easy installation in tight spaces, while its modular compatibility with SMC s ecosystem of valves, filters, and regulators simplifies system integration. For industries prioritizing **precision, efficiency, and longevity**, the **SMC AR30K-03-1-B** represents a well-engineered solution that balances performance with practicality, making it a dependable choice for a broad spectrum of pneumatic applications.

### **Pros and Cons of the SMC AR30K-03-1-B (AR30K031B) Air Compressor**

#### **Pros**

1. **High Efficiency and Power**

The AR30K-03-1-B is a **rotary screw compressor**, which offers superior energy efficiency compared to reciprocating (piston) compressors. It delivers a **continuous output of 30 kW (40.2 HP)** with a maximum pressure of **13 bar (190 PSI)**, making it suitable for industrial and commercial applications requiring steady airflow.

2. **Reliable and Durable Construction**

- **Oil-injected screw technology**, which reduces wear and extends the lifespan of critical components.

- **Corrosion-resistant materials** in key parts, ensuring durability in demanding environments.

- **Robust motor and drive system** designed for continuous operation.

3. **Low Operating Costs**

- The **high efficiency** of screw compressors translates to **lower electricity consumption** compared to piston compressors of similar capacity.

- **Oil injection** reduces friction, leading to **less maintenance and longer component life**.

- **Quiet operation** (typically around **70-75 dB**) compared to reciprocating compressors, which can be beneficial in noise-sensitive environments.

4. **Versatile Applications**

- **Industrial manufacturing** (painting, coating, pneumatic tools).

- **Commercial and institutional use** (hotels, hospitals, car washes).

- **Automotive and machinery maintenance**.

- **HVAC and refrigeration systems** (where compressed air is required for control systems).

5. **Easy Maintenance and Serviceability**

- SMC compressors are designed with **accessible components**, making servicing easier.

- The **oil separation system** ensures clean air output, reducing the need for additional filtration.

- **After-sales support** from SMC is generally strong, with availability of spare parts and technical assistance.

6. **Energy-Saving Features**

- Some models in the AR series include **variable speed drives (VSD)**, though this specific model (AR30K-03-1-B) is a **fixed-speed unit**. If energy savings are critical, a VSD-equipped model (e.g., AR30K-03-1-V) may be a better long-term choice.

- The **oil-injected design** reduces heat buildup, improving overall efficiency.

7. **Compact and Space-Efficient Design**

Compared to larger reciprocating compressors, screw compressors like this one are **more compact**, making them easier to install in smaller facilities.

---

#### **Cons**

1. **Higher Upfront Cost**

- Screw compressors are generally **more expensive to purchase** than reciprocating compressors of similar capacity. The AR30K-03-1-B is a **mid-to-high-end industrial unit**, so the initial investment will be significant.

- Additional costs may include **oil filtration systems, dryers, and aftercoolers** if not already integrated.

2. **Oil Management Requirements**

- **Oil-injected screw compressors require regular oil changes and monitoring** to prevent contamination of the compressed air.

- **Oil separation and filtration systems** add complexity to maintenance, though SMC provides reliable components for this.

- If oil leaks occur, they can **contaminate the air supply**, requiring additional purification equipment.

3. **Fixed-Speed Operation (Not VSD)**

- The **AR30K-03-1-B is a fixed-speed compressor**, meaning it runs at full capacity regardless of demand. This can lead to **higher energy waste** if the system does not operate at near-full load continuously.

- If **variable demand** is expected, a **VSD-equipped model (e.g., AR30K-03-1-V)** would be more cost-effective in the long run.

4. **Noise Levels**

- While quieter than reciprocating compressors, **rotary screw compressors still produce noticeable noise (typically 70-75 dB)**.

- If installed in **residential or noise-sensitive areas**, additional soundproofing may be required.

5. **Higher Maintenance Complexity**

- Compared to smaller reciprocating compressors, screw compressors have **more moving parts**, which can increase maintenance requirements.

- **Oil analysis and replacement** must be done regularly to prevent wear on the screw rotor and bearings.

- **Air filters and cooling systems** require periodic inspection and cleaning.

6. **Limited Portability**

- This is a **stationary industrial compressor**, not designed for portable use. If mobility is required, a **piston or smaller screw compressor** would be more suitable.

7. **Dependence on Power Supply Stability**

- Like all industrial compressors, the AR30K-03-1-B **requires a stable electrical supply**. Fluctuations or power outages can damage the motor or control systems.

- A **UPS or backup generator** may be necessary for uninterrupted operation in critical applications.

8. **Not Ideal for Very Low Flow Applications**

- While capable of high pressure, this compressor is **optimized for continuous high-volume airflow**. For applications requiring **very low but consistent flow**, a smaller unit might be more efficient.

---

### **Conclusion**

The **SMC AR30K-03-1-B (AR30K031B)** is a **highly efficient, durable, and reliable** rotary screw compressor well-suited for **industrial and commercial applications requiring steady compressed air**. Its **low operating costs, long lifespan, and robust construction** make it a strong choice for facilities with **consistent, high-demand airflow needs**.

However, the **higher upfront cost, fixed-speed operation (without VSD), and additional maintenance requirements** (particularly oil management) may be drawbacks for smaller businesses or applications with **variable demand**. If **energy savings are a priority**, a **VSD-equipped model** would be a better long-term investment.

For **large-scale manufacturing, automotive shops, or commercial settings where reliability and efficiency are critical**, the AR30K-03-1-B is an **excellent choice**. For **smaller operations or applications with fluctuating air demand**, a **smaller reciprocating or VSD screw compressor** might be more cost-effective.

---

### **Recommendation**

You need a **high-capacity, reliable compressed air source** for **industrial or commercial use**.

Your facility has **consistent, high airflow demand** (e.g., pneumatic tools, painting, HVAC systems).

You can **justify the higher upfront cost** with long-term **energy and maintenance savings**.

You have **access to proper maintenance and oil management** (or are willing to invest in training).

Noise is **not a major concern**, or soundproofing can be implemented.

Your **air demand is variable**, and a **VSD compressor** would save more energy.

You have a **tight budget** and can find a **similarly efficient but lower-cost model** (e.g., another brand s screw compressor).

Your **facility lacks proper maintenance infrastructure** for oil and filter management.

You need **portability or a smaller unit** for lower-capacity applications.

If **energy efficiency is a priority**, consider the **SMC AR30K-03-1-V (VSD version)** though it will be more expensive upfront, it will **reduce electricity costs significantly** in variable-demand applications.

For most **industrial users requiring steady, high-volume compressed air**, the **AR30K-03-1-B remains a strong and dependable choice**.

Details:

All products are guaranteed to be working but may show signs of use. Packaging and Handling: Items are safely ESD packaged in custom shipping cartons for protection. Call to use a shipping service other than the ones listed. The product is used surplus.

SMC AR30K-03-1-B / AR30K031B USED REGULATOR W BACKFLOW FUNCTION AND MOUNTING BRACKET, SIZE 30, 3/8 'RC 'PORT, 0.02 -0.2 MPA.

part #: ar30k031 prices

• $15.02-$29.95

specifications generapneumati:

• brand: Smc
• mpn: Ar30k-03-1-b
• part type: Hydraulic Pneumatic

general generapneumati:

• Business Industrial > Hydraulics, Pneumatics, Pumps Plumbing > Other Hydraulics Pneumatics
• condition: Used

payments generapneumati:

• other
• credit card: Diners-club
• wallet: Paypal

returns generapneumati:

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

seller generapneumati:

• # reviews: 188621
• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.5%

shipping generapneumati:

• cost: $12.90
• transit: 2-4 Days
• class: Standard
• type: Fixed
• service: Standard

offer generapneumati:

• started: February 3, 2026
• sold: 0
• availability: In Stock
• quantity: 2
• options: Ship-to-home

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