What Injection Molding Machines Are Compatible with a Newbury Screw OAL 35 312

www.completeplastics.com, sales@completeplastics.com, 770-417-6983. Injection molding machines rely heavily on the right screw to ensure efficient melting, mixing, and injection of plastic materials. One common screw size used in medium-tonnage vertical injection molding machines is the 1 3/4" Newbury screw with an overall length (OAL) of 35.312 inches. Understanding which machines are compatible with this screw size helps operators and maintenance teams source the correct parts and maintain optimal machine performance.

This post explores the types of injection molding machines that use the 1 3/4 Newbury screw OAL 35.312, details about compatible machine models, and tips for sourcing replacement parts.

Close-up of 1 3/4 inch Newbury screw with 35.312 inch overall length

Close-up of a 1 3/4 inch Newbury screw with 35.312 inch overall length used in vertical injection molding machines

What Injection Molding Machines Are Compatible with a Newbury Screw OAL 35 312

The 1 3/4 inch (1.75") Newbury screw with an overall length of 35.312 inches is a standard screw size designed for medium-tonnage vertical injection molding machines. The screw diameter and length directly affect the shot size, melting efficiency, and plasticizing capacity of the machine.

What Injection Molding Machines Are Compatible with a Newbury Screw OAL 35 312 - This screw size is popular because it balances shot volume and machine size, making it suitable for a range of applications requiring moderate shot sizes, typically between 5 to 6 ounces.

Compatible Newbury Injection Molding Machine Models

Several Newbury machine series commonly use the 1 3/4 Newbury screw with a 35.312" overall length. These machines are mostly vertical injection molding presses designed for medium tonnage ranges.

Newbury V676-RS Series

• Machine Type: Vertical injection molding machines

• Tonnage Range: Medium to high tonnage

• Screw Size: Often equipped with 1.75" diameter screws

• Shot Volume: Supports higher shot volumes, suitable for parts requiring consistent melt and injection pressure

• Use Case: Ideal for manufacturers needing reliable medium shot sizes with vertical press configurations

  
  

Newbury V5-75BRS and V5-100RS Models

• Machine Type: Vertical injection molding machines

• Tonnage Range: 75 to 100 tons

• Screw Size: 1 3/4" diameter with 35.312" OAL

• Shot Volume: Typically produces 5oz to 6oz shot sizes

• Use Case: Common in production environments requiring moderate shot sizes and precise molding control

  
  

Newbury E Series (Van Dorn Demag)

• Machine Type: Vertical injection molding machines under Van Dorn Demag branding

• Tonnage Range: 30 to 110 tons

• Screw Size: Uses the standard Newbury screw profile, including the 1 3/4" diameter with 35.312" length

• Use Case: Suitable for a variety of vertical molding applications, especially in older or surplus machines

  
  

Component and Replacement Information

When maintaining or upgrading injection molding machines, sourcing the correct screw and tip assemblies is critical. The 1 3/4 Newbury screw typically pairs with specific tip assemblies designed for optimal melt flow and shut-off performance.

Tip Assemblies

• Standard Tip: 1 3/4" Newbury Standard (STD) three-piece tip assembly

• Fast Shut-Off Tip: Designed to reduce drool and improve shot consistency

• Compatibility: These tips fit the 1 3/4" screw diameter and are essential for maintaining machine efficiency

  
  

Sourcing Replacement Parts

Finding the right replacement screws and tips can be challenging. Specialized suppliers like Complete Plastics provide verified parts compatible with Newbury machines. They offer:

• Detailed compatibility checks

• Custom orders for specific screw lengths and diameters

• Expert advice on matching screws to machine models

  
  

Contacting suppliers directly via email or phone can help confirm the exact part needed for your machine.

Why Choosing the Right Screw Matters

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Using the correct screw size and length affects:

• Shot Size Accuracy: Ensures consistent part weight and quality

• Material Melting Efficiency: Proper screw length allows thorough melting and mixing

• Machine Longevity: Correct parts reduce wear and tear on barrels and tips

• Production Efficiency: Minimizes downtime caused by incorrect or worn screws

  
  

Practical Tips for Machine Operators

• Always verify the machine model and tonnage before ordering screws

• Check the overall length and diameter specifications carefully

• Consider the type of tip assembly needed based on your molding process

• Work with trusted suppliers who specialize in Newbury machine parts

• Keep spare screws and tips on hand to reduce downtime during maintenance