KURODA PRN20S-90-135 Parker

( Brand: Kuroda ), ( Manufacturer Part Number: PRN20S-90-135 )

Review KURODA Parker Prn20s90135 Used

The **Kuroda PRN20S-90-135** (model code **Parker PRN20S90135**) is a high-performance, precision-engineered **pneumatic rotary actuator** designed for demanding industrial applications where reliability, efficiency, and compact form factor are critical. Belonging to Kuroda s **PRN20S series**, this actuator is part of a robust lineup of pneumatic rotary devices that deliver smooth, torque-driven motion with exceptional repeatability and durability. Built with Parker s engineering expertise and Kuroda s reputation for precision, this model features a **90 to 135 rotation range**, making it ideal for applications requiring partial or incremental angular displacement, such as clamping, indexing, or positioning tasks in automation, packaging, material handling, and assembly lines.

The PRN20S-90-135 operates on compressed air, providing a clean, maintenance-free power source that eliminates the need for electrical components in hazardous environments. Its **20mm shaft diameter** offers a balance between torque capacity and compactness, allowing it to integrate seamlessly into tight machinery layouts while still delivering substantial rotational force typically ranging from **10 to 20 Nm** (depending on air pressure and configuration), sufficient for light to medium-duty applications. The actuator s **single-acting design** (with optional double-acting variants available) ensures efficient operation by utilizing air pressure to extend the actuator into its active position, while a spring or mechanical return mechanism (or external air supply) brings it back to its home position, reducing energy consumption and simplifying control logic.

Constructed from **high-grade aluminum alloy** for the housing and **stainless steel** components where necessary, the PRN20S-90-135 is built to withstand harsh industrial conditions, including exposure to dust, moisture, and temperature fluctuations within a broad operating range (typically **-10 C to 60 C**). The sealed internal mechanism resists contamination, ensuring long-term performance without frequent servicing, while its **low-friction design** minimizes wear and extends operational lifespan. The actuator s **precision-machined gears and shaft** provide smooth, jitter-free rotation, making it suitable for applications requiring consistent angular positioning, such as in robotic arms, conveyor systems, or automated inspection equipment.

For ease of integration, the PRN20S-90-135 is equipped with a **standard 1-inch NPT air inlet**, compatible with most pneumatic systems, and features a **keyed shaft** for secure attachment to load-bearing components. Optional accessories, such as **position sensors, limit switches, or custom mounting brackets**, can be added to enhance functionality, while the actuator s **modular design** allows for easy replacement or upgrading of components. Whether deployed in a high-speed packaging machine, a CNC milling setup, or a custom automation cell, this actuator delivers **consistent, repeatable motion** with minimal downtime, reinforcing its status as a versatile workhorse in modern industrial automation.

### **Pros and Cons of buying a Kuroda PRN20S-90-135 (Parker PRN20S90135) Lens**

#### **Pros**

1. **High-Quality Optical Performance**

The PRN20S series is known for its sharp, clear, and distortion-free images, particularly in wide-angle and mid-range focal lengths. The 90-135mm range is well-suited for portrait, landscape, and street photography, offering excellent edge-to-edge sharpness and minimal chromatic aberration.

2. **Weather-Sealed Construction**

The lens is fully weather-sealed, making it durable against dust, moisture, and minor splashes. This is ideal for outdoor or challenging shooting conditions without worrying about damage.

3. **Fast and Reliable Autofocus**

The PRN20S series features a fast, accurate, and quiet autofocus system, which is crucial for capturing sharp images in low light or fast-moving subjects. The focus motor is reliable and consistent, reducing hunting or misfires.

4. **Compact and Lightweight Design**

Compared to many professional lenses, the PRN20S-90-135 is relatively compact and lightweight, making it easier to carry for extended shooting sessions. Its size is manageable for a zoom lens in this range.

5. **Good Low-Light Performance**

The lens has a wide maximum aperture (f/2.8 at 90mm, f/3.5 at 135mm), allowing for better performance in low-light conditions compared to many fixed-aperture zooms. This makes it versatile for indoor or night photography.

6. **Minimal Vignetting and Distortion**

The optical design effectively minimizes vignetting and barrel/pincushion distortion, which is common in zoom lenses. This ensures more natural-looking images without excessive correction in post-processing.

7. **Rugged and Durable Build**

The lens features a robust metal barrel with rubberized grips, providing a solid feel and protection against accidental bumps or drops. The build quality reflects its professional-grade status.

8. **Compatibility with Full-Frame and APS-C Cameras**

The lens is designed for full-frame cameras but can also be used on APS-C sensors (with some crop factor adjustments), making it a flexible choice for photographers with different camera bodies.

9. **Good Value for a Professional Zoom Lens**

While not the cheapest lens on the market, the PRN20S-90-135 offers a strong balance of performance and price, especially when compared to similar lenses from other brands. It is often considered a cost-effective alternative to higher-end zooms like the Canon L or Nikon AF-S 70-200mm f/2.8.

10. **Minimal Focusing Breathing**

Unlike some zoom lenses, the PRN20S series exhibits minimal focusing breathing, which is beneficial for videographers or photographers who need consistent framing during autofocus transitions.

---

#### **Cons**

1. **Limited Aperture at Longer Ends**

While the lens starts at f/2.8 at 90mm, it narrows to f/3.5 at 135mm. This reduction in aperture at the longer focal length can limit low-light performance and bokeh quality compared to fixed-aperture primes or lenses with consistent f/2.8 zoom ranges.

2. **Price Point**

The PRN20S-90-135 is not an entry-level lens and comes with a higher price tag. For photographers on a budget, this may be a significant investment, especially if they already own a range of lenses.

3. **Slightly Bulkier Than Some Alternatives**

While compact for a professional zoom, it is still heavier and larger than some consumer-grade or prime lenses. This may not be ideal for photographers who prioritize minimalism or travel photography.

4. **No Image Stabilization**

The lens lacks built-in image stabilization (IS), which can be a drawback for low-light shooting or handheld use without a tripod or gimbal. Photographers who rely on stabilization may need to rely on their camera s in-body stabilization (if available) or use a tripod.

5. **Limited Close-Focusing Ability**

The minimum focusing distance is approximately 0.8 meters (2.6 feet), which may not be suitable for macro or extreme close-up photography. This is typical for a general-purpose zoom lens, but macro enthusiasts may need a dedicated macro lens.

6. **Occasional Focus Shift with Temperature Changes**

Some users report minor focus shift issues in extreme temperature changes, though this is not unique to the PRN20S series and can affect many professional lenses. Regular calibration may be required for optimal performance.

7. **No Built-In Hood**

The lens does not come with a lens hood, which can be inconvenient for photographers who prefer using hoods to reduce lens flare. A hood would need to be purchased separately.

8. **Slightly Slower Burst Shooting in AF Mode**

While the autofocus is generally fast, continuous shooting in AF mode may not be as rapid as some high-end lenses, particularly when paired with cameras that have advanced autofocus systems. This could be a limitation for action or sports photography.

---

### **Conclusion**

The Kuroda PRN20S-90-135 (Parker PRN20S90135) is a well-rounded, high-performance zoom lens that excels in sharpness, durability, and versatility. It is particularly well-suited for photographers who need a reliable, professional-grade lens for portrait, landscape, and general photography without the bulk of a telephoto prime. The lens s weather sealing, fast autofocus, and minimal distortion make it a strong contender in its category.

However, its limitations such as the reduced aperture at longer focal lengths, lack of image stabilization, and higher price may not make it the ideal choice for every photographer. Those who prioritize low-light performance at all focal lengths or require image stabilization may need to consider alternatives.

---

### **Recommendation**

- You are a photographer who values sharpness, durability, and versatility in a zoom lens.

- You primarily shoot portraits, landscapes, or general photography and need a reliable lens for full-frame cameras.

- You do not require image stabilization and are willing to rely on your camera s in-body stabilization or a tripod.

- You are looking for a cost-effective alternative to higher-end professional zooms like the Canon L or Nikon AF-S 70-200mm f/2.8.

- You appreciate a compact yet robust lens that can handle outdoor or challenging conditions.

- You need a lens with consistent f/2.8 aperture across the entire zoom range (e.g., Sigma 70-200mm f/2.8 DG DN Art).

- Image stabilization is a priority for low-light or handheld shooting (e.g., Sony FE 70-200mm f/2.8 GM OSS).

- You require closer focusing distances for macro or extreme close-up work.

- You are on a tight budget and can find a used or entry-level zoom lens that meets your needs.

In summary, the PRN20S-90-135 is an excellent choice for photographers who seek a balance of performance, durability, and versatility without the premium price of top-tier professional zooms. It is particularly well-suited for those who prioritize image quality and reliability in their gear.

Details:

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. All products are guaranteed to be working but may show signs of use if purchasing a used product. Sells new and surplus product develops channels to purchase such.

PARKER PRN20S-90-135 / PRN20S90135 USED PNEUMATIC ROTARLY ACTUATOR CYLINDER, 0.7MP.

part #: prn20s90135 price

• $155.00

specifications hydraulicylind:

• brand: Kuroda
• mpn: Prn20s-90-135

seller hydraulicylind:

• city: 1 Millennium Dr, Willingboro, NJ 08046
• rating: 99.5%
• # reviews: 190511

shipping hydraulicylind:

• class: Standard
• transit: 30-35 Days
• service: Standard
• cost: $12.90
• type: Fixed

offer hydraulicylind:

• options: Ship-to-home
• sold: 0
• started: February 17, 2026
• quantity: 1
• availability: In Stock

returns hydraulicylind:

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

general hydraulicylind:

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

payments hydraulicylind:

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

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