HOWA JKA6H40X30-D4-RK Double Acting Hydraulic Clamp Cylinder Usip

( Brand: Howa ), ( Manufacturer Part Number: JKA6H40X30-D4-RK ), ( Part Type: Hydraulic Clamp Cylinder )

Review HOWA Double Acting Hydraulic Clamp Cylinder Usip

The **Howa JKA6H40X30-D4-RK Double Acting Hydraulic Clamp Cylinder** is a high-performance, precision-engineered hydraulic actuator designed for demanding industrial applications where reliability, durability, and consistent clamping force are paramount. Part of Howa s renowned **JKA series**, this robust clamp cylinder is specifically engineered to deliver exceptional performance in heavy-duty clamping, pressing, and material handling operations. With a **6-inch (152.4 mm) bore diameter** and a **30-inch (762 mm) stroke length**, it provides a substantial force output, making it ideal for applications such as metalworking presses, hydraulic clamps in assembly lines, die-casting machines, and other high-force industrial processes. The **double-acting design** ensures bidirectional control, allowing for precise positioning and force application in both extension and retraction cycles, which is crucial for applications requiring tight tolerances and repeatable cycles.

Constructed from **high-grade steel**, the cylinder features a **hardened and ground rod** for superior wear resistance and extended operational life, even under extreme conditions. The **double-acting piston rod** is sealed with **high-performance elastomeric seals**, including a robust **wiper seal** and **rod seal**, to prevent contamination from dust, debris, or hydraulic fluid, ensuring smooth operation and minimizing maintenance requirements. The **D4 designation** indicates a **4-inch (101.6 mm) tie-rod diameter**, providing additional structural integrity and stability, while the **RK variant** suggests a **right-hand thread** connection, allowing for easy integration into existing hydraulic systems with standard fittings. The cylinder s **flanged mounting** ensures secure and stable installation, reducing vibration and misalignment during operation.

One of the standout features of this clamp cylinder is its **adjustable clamping force**, which can be precisely controlled through hydraulic pressure, making it versatile for a wide range of materials from soft metals to hardened alloys. The **double-acting mechanism** also enables rapid cycling, reducing downtime and improving productivity in high-volume manufacturing environments. Additionally, the cylinder is equipped with **pressure-compensated seals** to handle fluctuations in hydraulic pressure without compromising performance, ensuring consistent clamping force across extended operational periods. Whether used in **automotive stamping, aerospace component manufacturing, or heavy-duty material handling**, this Howa clamp cylinder delivers the strength, precision, and reliability required to meet the most rigorous industrial demands.

Built to withstand **high-pressure applications** (typically rated for systems operating between **1,000 to 5,000 psi**), the JKA6H40X30-D4-RK is designed for longevity, featuring **corrosion-resistant coatings** and **sealed internal components** to protect against environmental contaminants. Its **modular design** allows for easy customization, including the addition of **position sensors, limit switches, or custom mounting brackets**, making it adaptable to various system configurations. With Howa s reputation for **superior hydraulic engineering**, this clamp cylinder represents a premium investment for industries seeking **high-efficiency, low-maintenance, and ultra-durable hydraulic solutions**. Whether integrated into a **hydraulic press, clamping fixture, or automated assembly line**, the JKA6H40X30-D4-RK delivers the power, precision, and endurance needed to drive productivity in even the most challenging applications.

### **Pros and Cons of buying a Howa JKA6H40X30-D4-RK Double-Acting Hydraulic Clamp Cylinder**

1. **High Quality and Durability** Howa is a well-known manufacturer of hydraulic components, known for producing reliable, long-lasting cylinders. This model is designed for heavy-duty applications, ensuring robustness in demanding environments.

2. **Double-Acting Design** The double-acting mechanism allows for precise control in both extension and retraction, making it suitable for applications requiring bidirectional force, such as clamping, pressing, or holding operations.

3. **Precision Engineering** The cylinder features a tight tolerance design, reducing leakage and ensuring smooth operation. This is particularly useful in applications where accuracy is critical.

4. **Versatile Compatibility** The **D4-RK** variant suggests it may be designed for specific hydraulic systems, possibly with a rodless or rod-equipped configuration depending on the application. It can be integrated into various hydraulic setups with minimal modifications.

5. **Corrosion Resistance** Howa cylinders are often treated with protective coatings or materials that resist corrosion, extending the lifespan of the cylinder in harsh conditions.

6. **Standardized Dimensions** The **60mm bore (JKA6H)** and **300mm stroke (X30)** make it a common size, meaning replacement parts and accessories are widely available.

7. **Energy Efficiency** Double-acting cylinders are generally more energy-efficient than single-acting ones because they use hydraulic pressure in both directions, reducing wasted energy.

8. **Warranty and Support** Purchasing from an authorized dealer or directly from Howa ensures access to warranty coverage and technical support, which is valuable for maintenance and troubleshooting.

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1. **High Initial Cost** High-quality hydraulic cylinders from reputable brands like Howa come at a premium price compared to generic or lower-grade alternatives. This may be a significant investment for small businesses or budget-conscious buyers.

2. **Maintenance Requirements** While durable, hydraulic cylinders still require regular maintenance, including lubrication, seal checks, and leak inspections. Neglecting maintenance can lead to premature failure.

3. **Specialized Installation Needs** Depending on the application, custom mounting or hydraulic line connections may be required, adding to installation complexity and potential labor costs.

4. **Limited Customization** This is a standard model, so if your application requires non-standard specifications (e.g., unusual stroke lengths, specialized ports, or materials), modifications may be necessary, increasing costs.

5. **Weight and Space Considerations** Hydraulic cylinders are heavy and bulky. If space is constrained or weight is a concern (e.g., in portable equipment), this could be a drawback.

6. **Dependence on Hydraulic System Compatibility** The cylinder must match the hydraulic pump s pressure and flow rate. Mismatches can lead to inefficient operation or damage to the system.

7. **Potential for Leakage Over Time** Even high-quality cylinders can develop leaks in seals or joints, especially if exposed to contaminants or extreme conditions. This may require periodic seal replacements.

8. **Training and Expertise Required** Operating and maintaining hydraulic systems effectively often requires trained personnel. Without proper knowledge, there is a risk of misuse or improper repairs.

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The **Howa JKA6H40X30-D4-RK double-acting hydraulic clamp cylinder** is an excellent choice for applications requiring **reliability, precision, and durability**, particularly in industrial, manufacturing, or heavy machinery settings. Its double-acting design ensures efficient bidirectional force, while Howa s reputation for quality minimizes long-term risks. However, the **high upfront cost, maintenance needs, and potential installation complexities** make it less ideal for small-scale or budget-limited projects.

If your application demands **consistent performance, longevity, and compatibility with standard hydraulic systems**, this cylinder is a strong recommendation. For cost-sensitive or low-demand applications, a lower-cost alternative (while still ensuring quality) may be more appropriate.

- **Buy if:** You need a **high-performance, long-lasting cylinder** for heavy-duty clamping, pressing, or holding applications where reliability is critical. Ensure your hydraulic system is compatible with the cylinder s specifications.

- **Consider alternatives if:** Your budget is tight, the application is low-intensity, or you require **custom modifications** that may not be feasible with this standard model.

- **Pair with:** High-quality hydraulic hoses, filters, and a maintenance plan to maximize the cylinder s lifespan. Consult Howa s technical documentation or an authorized dealer for installation guidance.

Ultimately, investing in this cylinder is justified for **professional, industrial, or mission-critical applications** where downtime and inefficiency cannot be tolerated.

Details:

Special Instructions. Most items are in stock when they listed. Manufacturer Part Number: JKA6H40X30-D4-RK. The product must be the original item shipped, with matching serial numbers if applicable.

Howa JKA6H40X30-D4-RK Double Acting Hydraulic Clamp Cylinder. A previously used, fully functional product that may have some signs of cosmetic wear. Howa JKA6H40X30-D4-RK Double Acting Hydraulic Clamp Cylinder Manufactured by HOWA. 2-Year MRO Shield Protection Plan Included.

part #: jka6h40x30d4 price

• $75.90

specifications hydraulicylind:

• brand: Howa
• mpn: Jka6h40x30-d4-rk
• part type: Hydraulic Clamp Cylinder

shipping hydraulicylind:

• class: Standard, One-day
• carrier: UPS
• cost: $0.00
• type: Calculated
• service: UPS Ground, UPS Next Day Air
• transit: 4-9 Days

offer hydraulicylind:

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

returns hydraulicylind:

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

seller hydraulicylind:

• # reviews: 22105
• city: Mount Sterling, Kentucky
• rating: 99.7%

payments hydraulicylind:

• wallet: Apple-pay
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• other

general hydraulicylind:

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

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