What is an Hourglass Spring?
Hourglass springs are a type of compression spring characterized by a reduced middle diameter and wider ends — resembling the shape of an hourglass. This shape offers unique advantages in applications that require centering, stability, and progressive load handling. These springs are ideal for dynamic and vibrating environments, and are commonly used in automotive, aerospace, industrial machinery, and anti-vibration systems.
- Custom Hourglass Spring Capabilities
| Parameter | Custom Range |
|---|---|
| Wire diameter | 0.2mm – 12.0mm |
| Material options | Carbon steel, stainless steel, music wire, phosphor bronze, chrome-silicon, etc. |
| Coil direction | Right-hand or left-hand |
| Ends | Closed, ground, or custom |
| Finish | Zinc plating, black oxide, powder coating, nickel, etc. |
| Tolerances | ±0.1mm or per request |
Applications of Hourglass Springs
Hourglass springs are used in various industries due to their self-centering and load-handling capabilities:
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Automotive suspensions and brakes
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Electric motors and actuators
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Valve and fluid control systems
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Medical and laboratory equipment
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Vibration-damping and shock-absorbing devices
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Aerospace and compact mechanical assemblies
Materials of Hourglass Springs
We offer a wide selection of materials to suit your application:
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Music wire for high tensile strength
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Stainless steel (302, 304, 316) for corrosion resistance
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Oil-tempered wire for durability
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Phosphor bronze and beryllium copper for conductivity
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Inconel for high-temperature environments
Finishes of Hourglass Springs
To enhance durability and performance, we provide:
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Zinc plating for corrosion protection
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Black oxide for a clean, matte finish
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Powder coating for color and extra wear resistance
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Electropolishing for smooth surfaces
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Custom finishes available upon request
Why Work With Hootai?
Choosing Hootai means working with a reliable spring expert:
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40+ years of manufacturing experience
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Specializing in complex custom springs
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Flexible MOQ and quick turnaround
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In-house tooling and design support
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Strict quality control for consistent results
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Serving global customers with professional service
Related Spring products
FAQs About Hourglass Springs
Yes. We specialize in custom springs. Simply send us your drawing or specifications, and our engineering team will evaluate and offer a quote quickly.
Lead times vary depending on complexity and quantity, but we typically offer samples within 7–15 working days and mass production in 2–4 weeks.
Yes. Sample prototyping is available based on your design specs.
We follow strict quality standards and can meet ±0.1mm or better, depending on the wire size, material, and shape. Tighter tolerances can be discussed for critical parts.