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40mm Nissei Screw - Call Now - 770-417-6983

  • Heat Tech
  • Feb 26
  • 3 min read

www.completeplastics.com, sales@completeplastics.com. When your injection molding machine needs a reliable screw replacement, the 40mm Nissei screw with an overall length of 37.99 inches stands out as a precise fit for several Nissei models. This screw is engineered to deliver consistent performance and durability, making it a trusted choice for many manufacturers. If you operate FN, FNX, or NEX series machines, understanding the specifications and applications of this screw can help you maintain optimal production quality and reduce downtime.


40mm Nissei Screw

Key Features of the 40mm Nissei Screw


This screw is designed specifically for Nissei injection molding machines, offering the following important specifications:


  • Diameter: 40mm

  • Overall Length (OAL): 37.99 inches (approximately 965mm)

  • Standard Tip Thread: Typically TR24 x 3.0mm LH (left-hand thread)

  • Materials Available:

- H-13 Nitrided steel for general-purpose use

- CPM 9V steel for high-wear applications requiring extra durability


The choice of material affects the screw’s lifespan and performance under different production conditions. H-13 nitrided screws provide good wear resistance and toughness, suitable for most molding tasks. CPM 9V screws are ideal when processing abrasive or filled materials that accelerate wear.


Compatible Nissei Injection Molding Machines


This 40mm screw fits a range of Nissei injection units, including:


FN Series (FN-25A Injection Units)

  • FN1000-12A

  • FN1000-18A

  • FN2000-18A

  • FN2000-25A

  • FN3000-25A

  • FN-140-25A


FNX & FNX-III Series (Hybrid Models)

  • FNX80-12A / FNX80III-12A

  • FNX110-12A / FNX110III-12A

  • FNX180-25A / FNX180III-25A


NEX Series (Electric Models)

  • NEX-140-25E


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Many 18A/E or 25A/E injection units share screw geometries across the FNX and NEX platforms, which simplifies sourcing and replacement.


Why Choose the 40mm Nissei Screw?


Selecting the right screw is critical for maintaining the quality and efficiency of your injection molding process. Here’s why this specific screw is a solid choice:


  • Precision Fit: Designed to match exact machine specifications, ensuring smooth installation and operation.

  • Durability: Available in materials that resist wear and extend service life, reducing replacement frequency.

  • Performance Consistency: Maintains stable melt flow and pressure, which improves part quality and reduces defects.

  • Versatility: Compatible with multiple Nissei models, making it a flexible option for facilities with mixed equipment.


Using a screw that fits perfectly and is made from the right material helps avoid common issues such as screw breakage, poor melt homogeneity, and inconsistent shot sizes.


Material Considerations for Different Applications


Choosing between H-13 nitrided and CPM 9V steel depends on your production needs:


  • H-13 Nitrided:

- Best for general-purpose molding

- Offers good toughness and wear resistance

- Suitable for standard thermoplastics and moderate cycle times


  • CPM 9V Steel:

- Designed for high-wear conditions

- Ideal for abrasive materials like glass-filled or mineral-filled resins

- Extends screw life in demanding production environments


Understanding your material and production demands will help you select the screw that balances cost and longevity.


Installation and Maintenance Tips


Proper installation and maintenance of the 40mm Nissei screw can maximize its lifespan and performance:


  • Inspect the screw and barrel before installation for any signs of wear or damage.

  • Use the correct torque settings when mounting the screw to avoid thread damage.

  • Regularly clean the screw and barrel to prevent material buildup that can cause wear or affect melt quality.

  • Monitor screw wear patterns during routine maintenance to plan timely replacements.

  • Keep spare screws on hand to minimize downtime during unexpected failures.


Following these practices helps maintain consistent molding quality and reduces costly machine stoppages.


How to Order Your 40mm Nissei Screw


If you need a replacement or spare screw, contact Complete Plastics for expert support and fast delivery. They provide genuine Nissei-compatible screws with options in both H-13 nitrided and CPM 9V materials.


Their team can help you confirm compatibility with your machine model and recommend the best material for your application.


 
 
 

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