Negri Bossi 45mm Screw - Call Now - 770-417-6983

www.completeplastics.com / sales@completeplastics.com. The 45mm Negri Bossi screw is a key component in many mid-range plastic injection molding machines. If you work with injection molding or need replacement screws, understanding which machines use this size can save time and improve your production efficiency. This post explains the common Negri Bossi machines that use a 45mm screw, their typical applications, and why this size is popular in the industry.

What Makes the 45mm Negri Bossi Screw Important?

The screw diameter in an injection molding machine directly affects the shot size, plasticizing capacity, and overall machine performance. A 45mm screw is a standard size for several Negri Bossi machines with clamping forces between 140 and 210 tonnes. This size balances the need for moderate shot volumes and efficient plastic melting, making it ideal for a wide range of applications.

Using the correct screw size ensures consistent melt quality, reduces wear, and maintains machine reliability. For manufacturers, sourcing the right 45mm screw can mean less downtime and better product quality.

Machines That Use the 45mm Negri Bossi Screw

Several Negri Bossi machine series commonly use the 45mm screw. Here are the main models and their characteristics:

ST Series (Hybrid Machines)

• Negri Bossi ST140: This 140-ton hybrid machine often comes equipped with a 45mm bimetallic or stellite-wear screw. The hybrid design combines hydraulic and electric components, offering energy savings and precise control. The 45mm screw supports medium shot weights and is suitable for general-purpose molding.

  
  

V Series (Hydraulic/Toggle Machines)

• V160-610: A popular 160-ton hydraulic model that uses a 45mm screw for standard injection molding tasks. It handles a variety of thermoplastics and is known for reliability in mid-sized production runs.

• V110-375: While this model typically uses smaller screws, it can be retrofitted or ordered with a 45mm screw for higher shot volumes. This flexibility allows manufacturers to adapt the machine to changing production needs.

  
  

NB Series (Legacy Machines)

• NB 150: A classic 150-ton machine that standardizes on the 45mm screw. Though older, this model remains in use due to its durability and compatibility with many molds.

  
  

VE Series (Electric Machines)

• VE160-720: This 160-ton electric machine uses a 45mm screw to achieve shot weights around 330 grams. Electric machines offer precise control and energy efficiency, making this model suitable for high-quality molding applications.

  
  

Canbio/Nova Series (Electric Machines)

• Nova 2100/720H-240V: A 210-ton electric machine often equipped with a 45mm screw. It supports multi-material and high-precision injection molding, ideal for complex parts requiring consistent quality.

  
  

Why Choose a 45mm Screw for Your Negri Bossi Machine?

The 45mm screw size offers several advantages:

• Versatility: Suitable for a wide range of materials and shot sizes.

• Balance: Provides a good balance between plasticizing capacity and machine size.

• Availability: Common size means easier sourcing of replacement screws and parts.

• Performance: Supports consistent melt quality and reduces wear when properly maintained.

  
  

For manufacturers running mid-range machines, the 45mm screw is a reliable choice that supports efficient production without the complexity or cost of larger screws.

How to Source a 45mm Negri Bossi Screw

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If you need a replacement or upgrade screw, consider contacting suppliers specializing in injection molding parts. For example, Complete Plastics offers 45mm Negri Bossi screws with full specifications and support.

• Website: www.completeplastics.com

• Email: sales@completeplastics.com

• Phone: 770-417-6983

  
  

Working with a trusted supplier ensures you get the right screw for your machine model, with quality materials and proper wear resistance.

Tips for Maintaining Your 45mm Screw

Proper maintenance extends the life of your screw and improves molding quality:

• Regular Inspection: Check for wear, corrosion, or damage.

• Cleaning: Remove residue and buildup after each production run.

• Lubrication: Use recommended lubricants to reduce friction.

• Replacement Timing: Replace the screw before wear affects product quality.

  
  

Following these steps helps avoid costly downtime and maintains consistent molding performance.

Summary

The 45mm Negri Bossi screw is a standard, versatile component used in many mid-range injection molding machines. Models like the ST140, V160-610, NB 150, VE160-720, and Nova 2100/720H-240V rely on this screw size for efficient plasticizing and shot control. Choosing the right screw size and maintaining it properly supports consistent production quality and machine longevity.