Understanding the 50mm Sumitomo Screw Specifications for SE180 Series Machines
- megan15067
- 3 hours ago
- 3 min read
www.completeplastics.com, sales@completeplastics.com, 770-417-6983.. Injection molding machines rely heavily on the precision and performance of their screws. For the Sumitomo SE180 series, the 50mm screw with a length of approximately 51.56 inches plays a crucial role in achieving consistent plasticizing and molding results. This post explores the key specifications of this screw, its compatibility with specific Sumitomo SE180 models, and what makes it a reliable choice for injection molding professionals.
Understanding the 50mm Sumitomo Screw Specifications for SE180 Series Machines
The 50mm Sumitomo screw is designed with precision to meet the demands of 180-ton all-electric injection molding machines. Here are the main technical details:
Diameter: 50 millimeters
Length: Approximately 51.56 inches (about 1309.6 millimeters)
L/D Ratio: Around 20:1, which means the length is roughly 20 times the diameter
Material: High-grade steel alloys designed for durability and wear resistance
Function: Plasticizing and conveying molten plastic within the barrel
Understanding the 50mm Sumitomo Screw Specifications for SE180 Series Machines - The length and diameter combination ensures efficient melting and mixing of plastic pellets, which is essential for producing high-quality molded parts. The L/D ratio of about 20:1 is common in industrial screws, balancing shear, heat generation, and throughput.
Compatibility with Sumitomo SE180 Series Machines
This screw size is typically found in several models within the Sumitomo SE180 series, which are all-electric injection molding machines with a clamping force of 180 tons (1800 kN). These models include:
Sumitomo SE180D
An older model that often uses the 50mm screw diameter for shot sizes around 10.7 ounces. It is known for reliable performance in medium-sized molding applications.
Sumitomo SE180DU / SE180DUZ
These are part of the direct-drive all-electric series. The 50mm screw is either a standard or high-capacity option in their plasticizing units, such as the C510 unit. These models offer improved energy efficiency and precision.
Sumitomo SE180EV-A
The newer generation replacing the DUZ models. It maintains similar screw configurations to support the 180-ton clamping force, with enhancements in control and reliability.
Each of these machines benefits from the screw’s ability to deliver consistent melt quality and shot size, which is critical for maintaining product quality and cycle times.
Why the 50mm Screw Length Matters
The length of the screw, at about 51.56 inches, directly influences the plasticizing process. Here’s why this length is important:
Plasticizing Efficiency
A longer screw provides more surface area for melting and mixing plastic pellets. This helps achieve a uniform melt temperature and reduces unmelted material.
Shot Size Control
The screw length affects the maximum shot volume. For the SE180 series, this length supports shot sizes around 10.7 ounces, suitable for medium-sized parts.
L/D Ratio Balance
The 20:1 L/D ratio is a balance between shear heating and residence time. It prevents overheating while ensuring the plastic is fully melted and homogenized.
Wear Distribution
A longer screw distributes wear over a larger area, extending the service life of the screw and reducing maintenance frequency.
Practical Considerations for Maintenance and Replacement
Injection molding professionals should keep these points in mind when working with or replacing the 50mm Sumitomo screw:
Material Compatibility
Ensure the screw material matches the type of plastic being processed to avoid premature wear or corrosion.
Inspection Frequency
Regularly inspect the screw for signs of wear such as pitting, corrosion, or thread damage. Early detection prevents defects in molded parts.
OEM vs. Aftermarket
Using original Sumitomo screws guarantees compatibility and performance. Aftermarket options may vary in quality and dimensions.
Installation Accuracy
Proper alignment and torque during installation prevent damage to the screw and barrel, ensuring smooth operation.
Contacting Suppliers
For replacements or technical support, companies like Complete Plastics provide expert assistance. They can be reached at sales@completeplastics.com or by phone at 770-417-6983.
Summary of Benefits for Injection Molding Operations
Using the correct 50mm Sumitomo screw with the proper length offers several advantages:
Consistent melt quality and shot size
Improved cycle times due to efficient plasticizing
Extended screw life with balanced wear distribution
Compatibility with multiple SE180 series models
Support from specialized suppliers for maintenance and replacement
Understanding these specifications helps operators and maintenance teams optimize their injection molding processes and reduce downtime.
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