71mm Nissei Screw - Available Now - www.completeplastics.com

770-417-6983 / sales@completeplastics.com. The 71mm Nissei screw with a total length of approximately 67.72 inches is a vital component for medium-to-large Nissei injection molding machines. These screws are designed to fit injection units with a 71A or 71E designation, commonly found in machines ranging from 220 tons to 500 tons. If you operate or maintain Nissei injection molding equipment, understanding the specifications and compatibility of this screw can help you maintain optimal machine performance and reduce downtime.

What Makes the 71mm Nissei Screw Essential?

Injection molding screws play a crucial role in the plastic molding process by melting, mixing, and injecting plastic material into molds. The 71mm Nissei screw is specifically engineered for Nissei machines with 71A or 71E injection units. Its diameter and length are optimized to provide consistent plasticizing and injection performance for medium-to-large machines.

The screw’s total length, around 67.72 inches, allows it to fit machines with various length-to-diameter (L/D) ratios, ensuring flexibility across different models. The trapezoidal M44 x 3.0mm left-hand thread provides reliable material conveyance and pressure build-up during injection.

Compatible Nissei Machine Models

This screw fits a broad range of Nissei injection molding machines, including:

• FN Series (Hydraulic/Hybrid)

Models like FN220-71A, FN280-71A, and FN5000-71A use this screw size for their injection units.

• FNX Series (Hybrid)

The FNX-III and FNX-IV series, such as FNX280III-71A and FNX460-160A, often use 71mm screws or a combination of 71mm and 80mm options.

• NEX Series (All-Electric)

Models like NEX280III-71E utilize the 71mm screw for precise electric injection molding.

• Legacy Series

Older machines such as the FS260S71A also require this screw size.

• Vertical and Specialty Machines

Series like ST, TH, TNXIII, and PNXIII use the 71mm screw for specialized molding applications.

Knowing your machine’s model and injection unit type is critical when ordering replacement screws to ensure compatibility and maintain machine efficiency.

Key Specifications of the 71mm Nissei Screw

Understanding the technical details helps in selecting the right screw for your machine:

• Injection Unit Type: 71A or 71E, indicating the screw diameter of 71mm.

• Thread Type: Trapezoidal M44 x 3.0mm Left Hand (LH) thread, designed for optimal material conveyance.

• Mounting: 12-bolt mounting pattern on the end cap ensures secure installation.

• Overall Length (OAL): Typically ranges from 59 inches to 67 inches depending on the specific L/D ratio and measurement point. The 67.72-inch length is common for many standard applications.

  
  

These specifications ensure the screw fits precisely and performs reliably under the demanding conditions of injection molding.

Why Choose a 71mm Nissei Screw from www.completeplastics.com?

Complete Plastics offers high-quality 71mm Nissei screws that meet OEM standards. Their screws are manufactured with precision to ensure durability and consistent performance. Here’s why sourcing from Complete Plastics is a smart choice:

• Accurate Fit: Screws are designed to match the exact specifications of Nissei machines, reducing the risk of installation issues.

• Reliable Materials: Made from high-grade steel alloys that resist wear and corrosion.

• Customer Support: The team at Complete Plastics can assist with technical questions and help identify the right screw for your machine.

• Convenient Ordering: Contact via sales@completeplastics.com or call 770-417-6983 for inquiries and orders.

  
  

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Using a properly matched screw extends the life of your injection molding machine and improves product quality.

Installation and Maintenance Tips

Proper installation and maintenance of the 71mm Nissei screw can prevent costly downtime:

• Verify Compatibility: Double-check your machine model and injection unit type before ordering.

• Inspect the Screw: Look for signs of wear, corrosion, or damage before installation.

• Follow Manufacturer Guidelines: Use the 12-bolt mounting pattern to secure the screw firmly.

• Regular Cleaning: Remove plastic residues and contaminants to maintain smooth operation.

• Monitor Performance: Watch for changes in injection pressure or cycle times that may indicate screw issues.

  
  

Routine maintenance helps maintain consistent molding quality and prolongs screw life.

Applications of the 71mm Nissei Screw

This screw size is ideal for a variety of injection molding applications, including:

• Automotive Parts: Medium-to-large components requiring precise molding.

• Consumer Goods: Durable plastic products with consistent quality.

• Industrial Components: High-volume production of parts with tight tolerances.

• Medical Devices: Specialty machines in the vertical and specialty series use this screw for precision molding.

  
  

The screw’s design supports efficient plasticizing and injection, making it suitable for demanding manufacturing environments.

How to Order Your 71mm Nissei Screw

Ordering a replacement or spare screw is straightforward:

1. Identify your machine model and injection unit type.

2. Contact Complete Plastics via their website www.completeplastics.com.

3. Email sales@completeplastics.com or call 770-417-6983 for personalized assistance.

4. Provide screw specifications or machine details to ensure the correct product.

5. Confirm delivery times and shipping options.

   
   

Having a spare screw on hand can minimize production interruptions.