35mm Niigata Barrel - Available Now - www.completeplastics.com
- Heat Tech
- Feb 24
- 3 min read
770-417-6983 / sales@completeplastics.com. Injection molding machines rely heavily on the right barrel and screw size to deliver precise, efficient production. The 35mm Niigata barrel stands out as a popular choice for small to midsize Niigata injection molding machines, especially those in the 55 to 110-ton range. If you operate or maintain Niigata MD Series machines or similar models, understanding the role and compatibility of the 35mm barrel can help you optimize your molding process and maintain consistent quality.

What Is a 35mm Niigata Barrel?
A 35mm Niigata barrel refers to the diameter of the barrel and screw used in specific Niigata injection molding machines. The barrel’s diameter directly influences the shot capacity—the volume of molten plastic injected into the mold during each cycle. For Niigata machines, a 35mm barrel is a common size for "A" or "B" screws, designed to balance shot volume and injection pressure effectively.
The overall length of this barrel is approximately 30.79 inches, making it suitable for precise control of plastic flow and temperature during the injection process. This size is ideal for molding small to medium parts where accuracy and repeatability are critical.
Machines That Use the 35mm Niigata Barrel
The 35mm barrel is primarily designed for Niigata’s MD Series machines, which include both all-electric and hybrid models. These machines typically range from 55 to 110 tons of clamping force, making them versatile for various molding applications.
Compatible Niigata Machine Series
MD Series (All-Electric)
This is the most common series using the 35mm barrel. Models such as the MD55, MD85, and MD110 fall into this category. These machines are known for their energy efficiency and precision.
MD-S8000 Series
The latest 8th-generation all-electric machines often use 35mm barrels. These models focus on high-precision molding for small to medium parts, benefiting from the barrel’s consistent shot capacity.
MD-SIII / MD-SIV Series
Older generations of Niigata all-electric machines, especially the 85-ton and 110-ton models, frequently utilize the 35mm barrel size. These machines remain popular in many production environments due to their reliability.
Why Choose a 35mm Barrel?
Choosing the right barrel size affects the quality and efficiency of your injection molding process. The 35mm barrel offers several advantages:
Balanced Shot Capacity
On a 110-ton machine, a 35mm screw typically provides a shot capacity between 3.0 and 4.5 ounces (polystyrene), depending on stroke length and material. This range suits many precision parts without sacrificing cycle time.
Precision and Control
The barrel size allows for better control over melt temperature and pressure, which is crucial for producing consistent, high-quality parts.
Versatility
Suitable for a variety of materials and part sizes, the 35mm barrel supports a wide range of molding applications, from automotive components to consumer goods.
Technical Specifications and Applications
The 35mm Niigata barrel is engineered for precision parts that require a good balance between shot volume and injection pressure. Its design supports:
Material Compatibility
Works well with common thermoplastics such as polystyrene (PS), polypropylene (PP), and ABS.
Shot Weight Range
Approximately 3.0 to 4.5 ounces on a 110-ton machine, which varies with screw stroke and material density.
Injection Pressure
Supports high injection pressures necessary for detailed molds and thin-walled parts.
These specifications make the 35mm barrel a reliable choice for manufacturers aiming for consistent quality and efficient production cycles.
How to Order and Support
If you need a 35mm Niigata barrel for your injection molding machine, www.completeplastics.com offers this product with expert support. You can contact their sales team via email at sales@completeplastics.com or by phone at 770-417-6983 for inquiries about availability, pricing, and compatibility.
Ordering from a trusted supplier ensures you receive a barrel that meets OEM standards and fits your machine perfectly, minimizing downtime and maintaining production quality.
Summary
The 35mm Niigata barrel is a key component for many Niigata MD Series injection molding machines, especially those in the 55 to 110-ton range. Its size offers a balanced shot capacity and precise control, making it ideal for producing small to medium-sized precision parts. Whether you operate the latest MD-S8000 series or older MD-SIII models, this barrel size remains a reliable choice.
For those looking to replace or upgrade their injection molding barrels, www.completeplastics.com provides quality 35mm Niigata barrels with professional support. Contact their team today to ensure your machines run smoothly and your parts meet the highest standards.



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