PARKER 02.00KNLP Double End Pneumatic Air Cylinder 4/9 4.000

( Brand: Parker ), ( Manufacturer Part Number: 02.00KNLP ), ( Model: 02.00KNLP 4 9 4.000 ), ( Part Type: Pneumatic Cylinder ), ( Country Of Manufacture: Mexico )

Review PARKER 4/9 4.000 Inch Bore Stroke Double End Pneumatic Air Cylinder

The **Parker Hannifin 02.00KNLP 4.000 Double-Ended Pneumatic Air Cylinder** is a high-performance, precision-engineered actuator designed to deliver reliable, high-force linear motion in demanding industrial, automation, and material-handling applications. Part of Parker s robust **Hannifin** line of pneumatic cylinders, this model features a **4-inch (101.6 mm) bore diameter** and a **200 mm stroke length**, providing a balanced combination of compact footprint and substantial displacement for efficient operation in tight spaces. Constructed from **high-grade aluminum alloy** for the cylinder body and **stainless steel** for critical components like the rod and end caps, this cylinder offers exceptional durability and resistance to corrosion, making it ideal for environments exposed to moisture, chemicals, or temperature fluctuations. The **double-ended design** allows for bidirectional force application, enabling the cylinder to push or pull with equal efficiency, which is particularly advantageous in applications requiring symmetrical motion, such as clamping, indexing, or reciprocating tooling.

At the heart of its performance lies the **KNLP series**, which incorporates Parker s **Low Profile (LP) design**, minimizing overall height while maintaining structural integrity. This feature is critical for applications where space optimization is essential, such as in robotic arms, CNC machines, or automated assembly lines. The cylinder is equipped with a **4.000 bar (400 psi) working pressure rating**, ensuring high force output up to **2,000 kgf (20 kN)** for lifting, pushing, or pulling heavy loads with precision. The **piston rod**, machined from corrosion-resistant stainless steel, is sealed with Parker s **high-performance elastomeric seals**, including a **double-lip piston seal and rod wiper**, to prevent contamination and extend the cylinder s operational lifespan. Additionally, the **magnetic piston** option (available as an accessory) enables non-contact position sensing, enhancing integration with PLCs or control systems for advanced automation.

For enhanced reliability, the **02.00KNLP 4.000** is fitted with **Parker s patented Quick-Connect fittings**, which simplify installation, maintenance, and air line connections while reducing the risk of leaks. The cylinder s **end caps** are designed with **threaded or flanged mounting options**, providing flexibility for integration into various machinery setups. Whether used in **packaging machinery, automotive assembly, or material sorting systems**, this cylinder delivers consistent, repeatable motion with minimal wear, thanks to its **low-friction design** and **optimized lubrication pathways**. Its **low noise operation** and **smooth, controlled extension and retraction** further contribute to a quieter, more efficient workflow. Overall, the Parker Hannifin 02.00KNLP 4.000 is a versatile, high-efficiency pneumatic actuator that combines strength, precision, and longevity, making it a trusted choice for engineers and operators demanding peak performance in industrial automation.

### **Parker 02.00KNLP 4.000 Double-Ended Pneumatic Air Cylinder Pros and Cons**

#### **Overview**

The **Parker 02.00KNLP 4.000** is a **double-acting pneumatic cylinder** with a **2-inch bore (50.8 mm), 4,000 mm stroke, and a nominal force of 20 kN (2,000 kgf)**. It is designed for industrial automation, material handling, and machinery applications where precise linear motion is required. Below is a detailed analysis of its advantages and disadvantages.

---

### **Pros**

1. **High Force and Load Capacity**

- The **20 kN (2,000 kgf) force** makes it suitable for heavy-duty applications, such as clamping, pressing, or pushing high-weight loads.

- Ideal for **industrial automation, robotics, and CNC machinery** where consistent force is critical.

2. **Long Stroke Length (4,000 mm)**

- The **4-meter stroke** allows for extended travel distances, useful in applications like **conveyor systems, packaging machines, or large-scale assembly lines**.

- Reduces the need for multiple cylinders in long-motion applications.

3. **Double-Ended (Differential) Operation**

- Can be actuated in **both directions** (extend and retract) with controlled force, improving efficiency in bidirectional tasks.

- Useful in **reciprocating applications** where the cylinder must push and pull with precision.

4. **Reliable Brand (Parker Hannifin)**

- Parker is a **well-established manufacturer** with a reputation for **durability, precision engineering, and long service life**.

- Extensive **global support network** for maintenance, spare parts, and technical assistance.

5. **Customizable Mounting Options**

- Comes with **standard flange, trunnion, or clevis mounts**, allowing flexibility in integration with different machinery.

- Can be adapted for **vertical, horizontal, or angled applications** with proper mounting hardware.

6. **Precision and Repeatability**

- Designed for **high repeatability** in automated systems, ensuring consistent performance over millions of cycles.

- Suitable for **high-speed applications** where accuracy is essential.

7. **Energy Efficiency**

- Pneumatic systems are generally **more energy-efficient** than hydraulic ones for intermittent or moderate-duty cycles.

- Lower maintenance costs compared to hydraulic cylinders in many cases.

8. **Compatibility with Standard Pneumatic Systems**

- Works seamlessly with **industrial air compressors** and **proportional valves**, making it easy to integrate into existing setups.

- Supports **PLC-controlled automation** for advanced process control.

9. **Corrosion and Wear Resistance**

- Typically made from **stainless steel or coated steel**, offering resistance to **rust and environmental degradation** in harsh conditions.

- Seals and bearings are designed for **long-term durability** in dusty or dirty environments.

10. **Modular and Upgradable**

- Can be paired with **position sensors, limit switches, or feedback devices** for advanced control.

- Some models allow for **custom rod extensions or different seal materials** for specific applications.

---

### **Cons**

1. **High Initial Cost**

- Compared to **standard pneumatic cylinders**, this **long-stroke, high-force model** is **more expensive** due to its precision engineering and materials.

- May require a **significant upfront investment**, especially for small businesses or startups.

2. **Maintenance Requirements**

- While durable, **seals, bearings, and piston rods** may wear over time, requiring **periodic lubrication and inspection**.

- **Contaminated air** (moisture, dust, oil) can reduce lifespan if proper filtration is not implemented.

3. **Space and Installation Constraints**

- The **4-meter stroke** requires **significant installation space**, which may not be feasible in compact machinery.

- **Mounting rigidity** is critical poor alignment can lead to **rod bending or premature wear**.

4. **Limited Stroke Speed Control**

- Unlike hydraulic cylinders, **pneumatic cylinders have less inherent damping**, which can lead to **higher impact forces** at the end of the stroke.

- May require **shock absorbers or cushioning** to prevent damage to the system.

5. **Dependence on Air Supply Quality**

- **Dirty or wet compressed air** can clog filters, damage seals, and reduce efficiency.

- Requires a **reliable air compressor and filtration system** to maintain performance.

6. **Noise and Vibration**

- Pneumatic systems can generate **higher noise levels** compared to hydraulic or electric actuators.

- Rapid movements may introduce **vibration**, which could affect sensitive equipment.

7. **Limited Temperature Range**

- Most standard pneumatic cylinders operate effectively in **0 C to 60 C (32 F to 140 F)**.

- Extreme temperatures may require **specialized seals or coatings**, adding cost.

8. **Less Precise Force Control Than Hydraulics**

- While pneumatic cylinders are precise, **force varies with pressure and load conditions**, unlike hydraulic systems which offer **better pressure regulation**.

- May require **pressure regulators and feedback systems** for consistent force.

9. **Potential for Air Leaks**

- Over time, **seals and connections** can develop leaks, leading to **energy loss and reduced efficiency**.

- Regular **pressure checks and seal replacements** are necessary.

10. **Not Ideal for Continuous Operation**

- Unlike electric or hydraulic actuators, **pneumatic cylinders are best suited for intermittent or cyclic use**.

- **Excessive continuous duty** can lead to **overheating and premature failure**.

---

### **Conclusion**

The **Parker 02.00KNLP 4.000 double-ended pneumatic cylinder** is a **high-performance, heavy-duty actuator** best suited for **industrial automation, material handling, and precision machinery** where **long stroke, high force, and bidirectional motion** are required. Its **reliability, precision, and compatibility with standard pneumatic systems** make it a strong choice for applications demanding **consistent and repeatable linear motion**.

However, its **higher cost, maintenance needs, and space requirements** may not make it ideal for **budget-conscious or space-constrained** applications. If **force control, energy efficiency, or continuous operation** are critical, alternative actuators (such as **hydraulic or electric linear motors**) might be more suitable.

### **Recommendation**

You need a **high-force (20 kN), long-stroke (4,000 mm) pneumatic actuator** for **industrial automation, robotics, or heavy-duty machinery**.

Your application requires **bidirectional precision motion** (e.g., clamping, pressing, or reciprocating tasks).

You have **proper air filtration and maintenance infrastructure** in place.

Budget constraints allow for a **premium, long-term investment** in a **reputable brand** like Parker.

Your application requires **ultra-high precision force control** (hydraulic may be better).

Space is **extremely limited**, and a shorter stroke or different actuator type is feasible.

You need **continuous operation** rather than intermittent use (electric or hydraulic may be more efficient).

Cost is a **major concern**, and a **standard pneumatic cylinder** with a shorter stroke would suffice.

For **high-demand industrial applications** where **reliability, force, and stroke length** are priorities, the **Parker 02.00KNLP 4.000** is an **excellent choice**. However, **careful consideration of installation, maintenance, and system compatibility** is essential to maximize its performance and lifespan.

Details:

Model: 02.00KNLP 4/9 4.000. Mounting Style: Tie Rod. We choose the carrier.

Your phone number and business name. After the return period has ended, you can no longer product. Items in Lot: condition: Used.

Action: Double. Weight lbs, oz: 3,2. Cylinder Sleeve Material: Aluminum. Brand: Parker.

Will there be a dock or forklift. Stroke: 4.000. Rod End Type: Threaded. Cylinder Head and Cap Material: Aluminum.

Country of Manufacture: Mexico. Consignee: B. Need it urgently. All goods are so AS IS' and WITH ALL FAULTS meaning, without limitation, that.

LOCAL PICK-UP, Prefer to pick it up yourself. Next Day Second Air Services are available.

part #: 0200knlp prices

• $40.89-$79.99

specifications hydraulicylind:

• brand: Parker
• mpn: 02.00knlp
• model: 02.00knlp 4 9 4.000
• part type: Pneumatic Cylinder
• country of manufacture: Mexico

returns hydraulicylind:

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

offer hydraulicylind:

• options: Ship-to-home
• best offers: True
• started: April 14, 2026
• sold: 0
• quantity: 1
• availability: In Stock

general hydraulicylind:

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

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• wallet: Apple-pay
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• other

shipping hydraulicylind:

• type: Fixed
• cost: $13.99
• class: Expedited
• service: USPS Priority Mail
• carrier: USPS
• transit: 3-8 Days

seller hydraulicylind:

• rating: 99.8%
• city: Middlebury, Indiana
• # reviews: 64296

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