Extension Helical Spring
We supply full-spec extension helical spring covering wire diameters 0.3mm–10mm, outer diameters 4mm–100mm and customizable free length 10mm–1500mm. Diverse hook styles and material options support customized solutions for light micro parts and large industrial machinery. Precise CNC coiling ensures uniform tension output for each extension helical spring.
Product Features
Simple structure
Composed of helical coils and end hooks, compact and easy to install.
Wide application coverage
Adopted from micro electronic products to heavy industrial machinery in nearly all sectors.
Customizable specifications
Wire diameter, outer diameter, length and hook shapes can be adjusted freely to match installation demands.
Cost-effective
Mature mass production processes cut manufacturing costs, making it an economical elastic component choice.
Hook Types & Material Options
End hooks include round hook, half-round hook, long hook, German hook, British hook and flat hook for various installation modes. Available raw materials: carbon spring steel, alloy spring steel, stainless steel wire and piano wire. Surface treatments: natural finish, black oxide, zinc plating, nickel plating, plastic coating and electrophoresis.
Application Scenarios
Suitable for hardware tools, auto spare parts, mechanical equipment, electronic appliances, fitness gear and toys that require tensile force transmission.
Full-Spec Production Capacity
Baoding Zhongxin Spring Manufacturing Co., Ltd. owns a comprehensive product line covering micro springs (0.1mm wire diameter) up to large springs (22mm wire diameter), including compression, extension, torsion and special-shaped springs. Monthly output reaches 1 million springs and 6,000 tons of steel wire to guarantee stable supply for bulk orders. Customers can realize one-stop procurement of multiple spring types to simplify purchasing workflows and improve efficiency. Abundant specifications and stable production capacity allow us to respond rapidly to both standard and customized orders.
Product Parameter Table
|
Parameter Item |
Value / Range |
|
Wire Diameter Range |
0.3 mm ~ 10 mm |
|
Outer Diameter Range |
4 mm ~ 100 mm |
|
Free Length |
10 mm ~ 1500 mm (Customizable) |
|
End Hook Types |
Round hook, half-round hook, long hook, German hook, British hook, flat hook and more |
|
Optional Materials |
Carbon Spring Steel / Alloy Spring Steel / Stainless Steel Wire / Piano Wire |
|
Surface Treatment |
Natural / Black Oxide / Zinc Plating / Nickel Plating / Plastic Coating / Electrophoresis |
|
Customization Mode |
Customized per drawings, samples or tensile load requirements |
|
Application Scenarios |
Hardware tools, auto spare parts, mechanical equipment, electronic appliances, fitness gear, toys |
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