70mm Negri-Bossi Free Flow Tip Assembly - Order Now - sales@completeplastics.com
- Heat Tech
- Feb 23
- 3 min read
www.completeplastics.com / 770-417-6983. Injection molding machines demand precision components that ensure smooth operation and high-quality output. The 70mm Negri-Bossi free flow tip assembly is a key part designed to meet these needs for medium-to-large capacity machines. This post explores the features, compatibility, and benefits of this assembly, helping you understand why it’s an essential choice for your injection molding setup.
What Is the 70mm Negri-Bossi Free Flow Tip Assembly?
The 70mm Negri-Bossi free flow tip assembly is a precision-engineered component used in injection molding machines with a 70mm screw diameter. It consists of three main parts:
Retainer
Check ring
Seat
This three-piece design helps reduce material shear and prevents material hang-ups during processing. The assembly’s overall length (OAL) is 7.03 inches, and it features a 22.5-degree tip angle optimized for smooth material flow.
Machines Compatible with the 70mm Tip Assembly
This assembly fits several Negri-Bossi machines designed for medium-to-large production runs. Notable models include:
Negri-Bossi V 370 - 2000
A 370-ton machine often equipped with a 70mm screw diameter, ideal for producing medium-sized parts efficiently.
Negri-Bossi V 480 Series
Models like the V 480-4100 commonly use the 70mm screw and tip assembly, supporting larger part production with consistent quality.
NOVA sT Series and VECTOR sT Series
Some mid-range configurations of the NOVA sT (180-500 tonnes) and VECTOR sT (650-1300 tonnes) also use 70mm components depending on the injection unit size.
Knowing your machine model and screw size is crucial to selecting the correct tip assembly, ensuring compatibility and optimal performance.
Why Choose a Free Flow Tip Assembly?
The free flow tip assembly design offers several advantages:
Minimized Material Shear
The assembly reduces the stress on molten plastic, preserving material properties and preventing degradation.
Prevention of Hang-Ups
The design prevents material from sticking or clogging inside the tip, which can cause defects or downtime.
Improved Cycle Times
Smooth flow reduces injection pressure fluctuations, helping maintain consistent cycle times and part quality.
Ease of Maintenance
The three-piece construction allows for easier disassembly and cleaning, reducing machine downtime.
These benefits translate into better product quality, less waste, and more efficient production.
Ordering and Support from Complete Plastics
Complete Plastics offers the 70mm Negri-Bossi free flow tip assembly with reliable customer support. You can order directly by contacting their sales team:
Email: sales@completeplastics.com
Phone: 770-417-6983
Website: www.completeplastics.com
Their team can help confirm compatibility with your machine model and provide guidance on installation and maintenance.
Practical Tips for Installation and Use
To get the most from your 70mm free flow tip assembly:
Verify Machine Specifications
Confirm your machine’s screw diameter and model before ordering to avoid mismatches.
Follow Manufacturer Guidelines
Use the recommended torque and installation procedures to prevent damage.
Regular Inspection
Check the tip assembly for wear or buildup during routine maintenance to maintain flow quality.
Use Compatible Materials
Some plastics may require specific tip designs; ensure your material matches the assembly’s capabilities.
Summary
The 70mm Negri-Bossi free flow tip assembly is a vital component for medium-to-large injection molding machines using a 70mm screw diameter. Its three-piece design reduces material shear and prevents hang-ups, supporting efficient and high-quality production. Compatible with several Negri-Bossi models including the V 370 - 2000 and V 480 series, as well as select NOVA sT and VECTOR sT machines, this assembly offers reliability and ease of maintenance.
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