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40mm Nissei Screw - Order Now - sales@completeplastics.com

  • megan15067
  • Feb 27
  • 3 min read

770-417-6983 / ww.completeplastics.com. Finding the right screw for your Nissei injection molding machine can be challenging. The 40mm Nissei screw with a total length of approximately 42.76 inches (about 1086 mm) fits several mid-sized Nissei models and offers reliable performance. This post explains why this screw size is essential, which machines it fits, and how to order it from Complete Plastics.


Close-up view of a 40mm Nissei screw with detailed threading and polished surface
40mm Nissei screw with 42.76-inch length, suitable for mid-sized injection molding machines

Why the 40mm Nissei Screw Matters


Injection molding machines rely on screws to melt, mix, and inject plastic into molds. The screw diameter and length directly affect the machine’s output quality and efficiency. A 40mm screw diameter is common for mid-range tonnage machines, balancing throughput and precision.


The total length of 42.76 inches includes the drive end, which connects to the motor. The flighted length, the part that moves and melts plastic, is usually shorter depending on the length-to-diameter (L/D) ratio, typically 18:1 or 20:1 for these screws. This ratio influences melting efficiency and plasticizing capacity.


Choosing the correct screw size ensures:


  • Consistent melt quality

  • Proper plasticizing capacity

  • Reduced wear and tear on the machine

  • Compatibility with injection units


Compatible Nissei Machine Models


The 40mm screw with a 42.76-inch total length fits several Nissei injection molding machines, especially in the FN and FNX series. Here are some specific models:


  • FN-3000-25A: This model uses a 40mm (25A) screw size as standard.

  • FN-1000 and FN-2000 Series: Models like FN1000-12A, FN1000-18A, and FN2000-18A list 40mm screws as standard stock sizes for their injection units.

  • FNX-80III: The FNX80III with a 12A injection unit also uses a 40mm screw diameter (1.57 inches).

  • Hybrid and Electric Series: Modern Nissei series such as NEX-V, FNX, and FVX-III often use this screw size for mid-range tonnage machines, typically from 80 to 300 tons of clamping force.


This compatibility means that if you operate any of these machines, the 40mm screw is likely the correct replacement or upgrade part.


Technical Details to Know


Understanding the technical aspects of the 40mm Nissei screw helps you make informed decisions:


  • Diameter: 40mm (approximately 1.57 inches)

  • Total Length: 42.76 inches (1086 mm), including the drive end

  • Flighted Length: Shorter than total length, depending on L/D ratio (usually 18:1 or 20:1)

  • Material: Typically made from hardened steel or alloy for durability and wear resistance

  • Application: Designed for mid-sized injection molding machines with tonnage between 80 and 300 tons


The length-to-diameter ratio affects how the screw melts and mixes plastic. A longer flighted length improves melting but may reduce throughput speed. The 40mm screw balances these factors for efficient operation.

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How to Order Your 40mm Nissei Screw


Complete Plastics offers this 40mm Nissei screw with a total length of 42.76 inches, ready to ship for compatible machines. Ordering is straightforward:


When ordering, provide your machine model and screw specifications to ensure the correct part. The sales team can assist with compatibility questions and shipping details.


Benefits of Ordering from Complete Plastics


Choosing Complete Plastics for your Nissei screw replacement offers several advantages:


  • Quality Assurance: Screws meet strict manufacturing standards for durability and performance.

  • Fast Shipping: Quick turnaround times to minimize machine downtime.

  • Expert Support: Knowledgeable staff help confirm compatibility and answer technical questions.

  • Competitive Pricing: Fair prices for high-quality parts.


These benefits help keep your injection molding operations running smoothly without costly delays.


Practical Tips for Installation and Maintenance


To get the most from your 40mm Nissei screw, follow these tips:


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

  • Inspect Old Screw: Look for wear patterns or damage that might indicate other machine issues.

  • Use Proper Tools: Installation requires specific tools to avoid damaging the screw or machine.

  • Regular Maintenance: Clean and inspect screws regularly to extend their lifespan.

  • Monitor Performance: Watch for changes in melt quality or cycle times that could signal screw wear.


Proper installation and care help maintain product quality and reduce unexpected downtime.


Summary


The 40mm Nissei screw with a 42.76-inch total length fits many mid-sized Nissei injection molding machines, including FN, FNX, and hybrid series. Its size and design support efficient melting and injection for machines with 80 to 300 tons of clamping force. Ordering from Complete Plastics ensures you get a quality part with expert support and fast delivery.


 
 
 

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