Tie Bar
We are committed to providing system solutions for the plastics industry and providing high-quality tie bar. After years of technical accumulation, we provide products including tie bar injection molding, tie bar chrome plating, injection machine tie bar, etc.
Why Choose Us
Production Capacitie
We have two factories with about 9000 square meters construction area located in Zhoushan. Our production capacities can reach 1500 screw barrel sets monthly that enable us to deliver products to our customers in a short time.
Professional Production Equipment
3-axis CNC, 4-axis CNC, Screw Root Diameter Grinding Machine, Centrifugal Casted Furnace, Vacuum Quenching Furnace, Lathe, Hardness Tester, Metallographic Microscope.
Global Market
Our products were widely exported to Southeast Asia, Europe, Middle East, North America, South America and Africa.
Quality Assurance
The R&D, design and production of each of our product focuses on technological innovation and precision manufacturing, strictly controlled in accordance with the quality management system to ensure the performance and quality of each factory equipment.

Tie Bar Injection Molding
Tie Bar Injection Molding The Tie bar of the injection molding machine is the guide device for the movement of the mold platen, so that to adjust platen distance.
Injection Machine Tie Bar
The Injection Machine Tie Bar is an integral component of an injection molding machine. It acts as a support beam that keeps the molds securely in place during the injection process.
Tie Bar Chrome Plating
Generally, it is made of 4140 material, and the surface is plated with hard chrome. Surface roughness and strength provide low noise and precise injection clamping.
Technical Parameters
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Material: |
42CrMo (4140) |
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Treatment: |
Quench, Nitriding, Electroplating |
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Surface Coating: |
Hard Chrome |
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Chrome Thickness: |
0.05mm |
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Straightness: |
0.02mm/m |
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Warranty: |
1 year |

Advantages of Tie Bar
High-Precision Manufacturing
Our tie bars are crafted with extreme precision, using cutting-edge technology and state-of-the-art equipment.
01
Superior Strength and Durability
Our Injection Machine Tie Bars are built to last. Made from high-quality stainless steel and aluminum alloys, they are resistant to rust, corrosion, and wear.
02
Even Clamping Force
Tie bars help distribute the clamping force evenly across the mold. This ensures that the mold is held together uniformly, reducing the risk of defects caused by uneven pressure.
03
Stability
They create a rigid framework that prevents the machine from shifting or flexing during operation. This stability is crucial for maintaining the precision and repeatability of the molding process.
04
Customizable Options
We understand that every injection molding application is unique, which is why we offer a wide range of customizable options for our tie bars.
05
Mold Dimensions: Ensure mold width and height are smaller than the tie bar distance, leaving some margin for safety.
Ejection System Compatibility: Check if the mold design aligns with the machine’s ejector system within the tie bar distance.
Machine Tonnage: Larger machines generally have greater tie bar distance, suitable for bigger molds.
Multi-Cavity Molds: Multi-cavity molds might require larger tie bar distances due to their size.


● Ensure the tie bars are correctly aligned with the machine's platen to prevent stress and uneven force distribution.
● Apply anti-seize lubricant to tie bar threads to prevent galling and ensure smooth tensioning.
● Ensure nuts are threaded evenly to avoid cross-threading.
● Adhere to specified torque and tension values.
● Keep the tie bars and mounting surfaces clean from dust, grease, or contaminants to ensure a secure installation.
● Run the machine at maximum clamping force to verify tie bar stability.
● Conduct periodic checks for signs of wear, cracks, or misalignment to ensure long-term reliability.
Common Issues & Solutions
|
Issue |
Cause |
Solution |
|
Uneven Clamping Force |
Misaligned or unevenly tensioned tie bars. |
Re-torque in a star pattern; check parallelism. |
|
Thread Stripping |
Cross-threading or dirty threads. |
Clean threads; replace damaged components. |
|
Tie Bar Stretch |
Over-tensioning or material fatigue. |
Replace tie bars; adhere to torque limits. |
●Contact our sales team online via email at info@rootier.cn and provide the products and quantities you need to order and your customization requirements.
●If you don't have drawings, we can help you measure your current screw barrel. Also we can design the screw barrel and select the matched steel materials based on your polymers processing application.
●Once everything is confirmed, we will send you the drawing for confirmation.
●Once approved by you, we will send you a quote so you can place your order and we will begin working on your custom order.
●According to the delivery time, we will arrange shipment after receiving the remaining payment.

Packaging and Delivery
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Payment: |
T/T, Trade Assurance, Paypal, Western Union,Alipay, Credit Card, L/C etc. |
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Safe Packing: |
Plywood Case |
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Shipping: |
Express, Air, Sea |
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Delivery Date: |
7-15Days |
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