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Spin Welding Products

Dukane spin welding systems are designed for joining round or cylindrical thermoplastic parts using controlled rotational motion, pressure, and frictional heat. Spin welding is commonly used for applications that require strong, repeatable, leak-resistant bonds without adhesives, solvents, or mechanical fasteners. It is well suited for circular parts such as filters, reservoirs, caps, valves, fittings, containers, and other rotationally symmetrical plastic components.

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Spin Welding for Thermoplastic Assembly

Spin welding joins thermoplastic parts by rotating one component against another under controlled pressure. The friction generated at the joint interface creates heat, causing the plastic to melt and flow. Once the proper melt condition is reached, rotation stops and pressure is maintained while the material cools and solidifies into a strong, consistent bond.

Advantages of Spin Welding

  • Strong, repeatable welds for circular plastic joints
  • Well suited for round, cylindrical, or symmetrical parts
  • Capable of producing leak-resistant seals
  • No adhesives, solvents, or additional consumables required
  • Supports accurate orientation and consistent finished assemblies
  • Useful for filters, fittings, valves, reservoirs, containers, and caps

Learn more about how spin welding works, including material considerations and applications, on our Spin Welding Process page.

 

Frequently Asked Questions (FAQs)

What is spin welding and how does it work?

Spin welding joins thermoplastic parts by rotating one component against another under controlled pressure. The friction generated at the joint interface creates heat, causing the plastic to melt. Once the proper melt condition is reached, rotation stops and pressure is maintained while the material cools and solidifies into a strong, consistent bond.

What types of parts are best suited for spin welding?

Spin welding is best suited for thermoplastic assemblies with circular weld joints, especially round, cylindrical, or rotationally symmetrical parts. Common examples may include caps, filters, fittings, valves, reservoirs, containers, and other parts where one component can be rotated against another during assembly.

What makes the Servo Weld™ Plus Spin Welder different from a traditional spin welder?

The Servo Weld™ Plus Spin Welder is an all-electric press system that uses two servo motors to control both the spin axis and vertical axis. This allows precise control of weld motion, angular orientation, and final assembly height. It also supports advanced process control, setup recipes, weld cycle data, and automation interfaces.

Can the Servo Weld™ Plus Spin Welder be used in semi-automated work cells?

Yes. The system includes built-in capabilities that can reduce the need for an external PLC or HMI in some semi-automated work cells. Supported features include fixture clamps, part presence sensors, remote operation with setup switching, light curtains, automation connectors, and cycle data output to external devices.

Can spin welding create hermetic or leak-resistant seals?

Yes. When the material, joint design, tooling, and weld parameters are properly matched, spin welding can produce strong, repeatable, leak-resistant or hermetic seals. The Servo Weld™ Plus Spin Welder’s Melt-Match® mode is designed to help support hermetic sealing and accurate final dimensions.

Can Dukane help determine if spin welding is right for my application?

Yes. Dukane can review your material, part geometry, weld area, strength or sealing requirements, production volume, and quality expectations to determine whether spin welding is the right fit.