top of page
Search

50mm Negri Bossi Tip Assembly - Call Now - 770-417-6983

  • Heat Tech
  • Feb 23
  • 3 min read

www.completeplastics.com / sasles@completeplastics.com. Injection molding machines rely on precise components to deliver consistent, high-quality results. One critical part is the 50mm Negri Bossi tip assembly, a key element in several Negri Bossi machine series. This assembly plays a vital role in the injection process, ensuring smooth material flow and accurate molding. If you operate or maintain Negri Bossi machines, understanding the specifics of the 50mm tip assembly can help you optimize your production and avoid costly downtime.



Close-up view of a 50mm Negri Bossi tip assembly showing detailed screw and nozzle components
50mm Negri Bossi tip assembly close-up

Close-up view of a 50mm Negri Bossi tip assembly showing detailed screw and nozzle components



What Is a 50mm Negri Bossi Tip Assembly?


The 50mm Negri Bossi tip assembly typically refers to the three-piece screw tip or valve assembly designed for injection molding machines with a 50mm screw diameter. This assembly includes the screw tip, nozzle, and valve mechanism, which together control the flow of molten plastic into the mold cavity.


The overall length (OAL) of 6.23 inches is a standard dimension for these assemblies, ensuring compatibility with various Negri Bossi machine models. The precision in size and design allows for efficient injection, reduced material waste, and consistent part quality.


Machines That Use the 50mm Tip Assembly


Feed Screw
Buy Now

Several Negri Bossi machine series commonly feature models that utilize the 50mm screw tip assembly. These machines vary in size and application but share the need for this specific component to maintain performance.


NOVA 5eT Series


The NOVA 5eT series consists of all-electric injection molding machines ranging from 50 to 360 tonnes. Mid-range models in this series often use 50mm screws, making the 50mm tip assembly essential for industries requiring precision molding, such as medical devices and electrical components.


NOVA sT Series


This servo-hydraulic toggle series covers machines from 180 to 500 tonnes. Machines around the 200 to 250-tonne range commonly use 50mm screws. The 50mm tip assembly supports these machines by providing reliable injection control for medium-sized parts.


VECTOR sT Series


VECTOR sT machines are larger modular units ranging from 650 to 1300 tonnes. Although these machines typically use larger screws, some are fitted with 50mm injection units for specific applications requiring high pressure or small shot sizes. The 50mm tip assembly is crucial in these cases to maintain precision.


V-Series (Older Models)


Legacy models like the V-11-15 and V-12-80 use tip assemblies or nozzle threads compatible with 50mm specifications. Maintaining these older machines often requires sourcing the correct 50mm tip assembly to ensure continued operation.


NB Series (Legacy)


Older NB series machines, including 160-tonne and 200-tonne models, frequently used 50mm screw diameters depending on the injection unit size (A, B, or C). These machines benefit from the availability of 50mm tip assemblies for repair or upgrade.


Why the 50mm Tip Assembly Matters


The tip assembly directly affects the quality and efficiency of the injection molding process. Here are some reasons why the 50mm tip assembly is important:


  • Precision: The assembly ensures accurate delivery of molten plastic into the mold, reducing defects.

  • Compatibility: Designed to fit specific Negri Bossi machines, it prevents leaks and mechanical issues.

  • Durability: Made from high-quality materials, it withstands the high pressures and temperatures of injection molding.

  • Maintenance: Easy replacement of the tip assembly minimizes machine downtime and keeps production on schedule.


How to Choose the Right 50mm Tip Assembly


Selecting the correct tip assembly involves matching the assembly to your machine model and application needs. Consider these factors:


  • Machine Series and Model: Confirm your machine uses a 50mm screw diameter and check the series compatibility.

  • Shot Size and Pressure Requirements: Some applications require higher pressure or smaller shot sizes, influencing the assembly choice.

  • Material Compatibility: Ensure the assembly materials suit the plastics you process.

  • OEM vs. Aftermarket: Original equipment manufacturer parts guarantee fit and performance, but quality aftermarket options may offer cost savings.


Where to Buy 50mm Negri Bossi Tip Assemblies


Reliable suppliers like Complete Plastics offer 50mm Negri Bossi tip assemblies with expert support. You can contact them directly for inquiries or orders:


Working with a trusted supplier ensures you get genuine parts that meet your machine’s specifications.


Tips for Maintaining Your 50mm Tip Assembly


Proper maintenance extends the life of your tip assembly and prevents production issues:


  • Regular Inspection: Check for wear, cracks, or buildup on the screw tip and nozzle.

  • Clean Thoroughly: Remove plastic residue after each production run to avoid clogging.

  • Use Correct Torque: When assembling, apply the recommended torque to avoid damage.

  • Replace When Needed: Don’t wait for failure; replace the tip assembly at signs of significant wear.


 
 
 

Comments

bottom of page