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Linear wave spring

Product Description

Linear wave spring expanders Carbon steel or Stainless Steel


Linear wave spring is a continuous wave forming of the shape a longstrip springs. As a load bearing device have roughly the same loadand deflection characteristics.

Compared with stamping  spring, linear  spring use pre-tempered raw materials and rounded edges, and the load and elastic coefficient are more accurate and predictable, 50% better than stamping parts, and the elastic coefficient is stable within the allowable deformation range.

Linear spring has high reliability, excellent performance, no deformation, smooth surface, no pits, scratches, breaks and other small defects. Stamped spring may have defects such as fatigue fracture and inaccurate loading in the subsequent manufacturing process. In terms of metallurgy, mechanical properties and dimensional stability, linear  spring can provide higher precision quality.

Linear wave spring is used to replace traditional round wire spring with their unique space-saving potential. The use of wave spring also indirectly reduces the spring assembly space due to the reduced working height of the spring. Smaller installation size and less material application result in a significant cost reduction.

It is particularly suitable for applications requiring weight reduction and applications limited by a small installation space. Typical application areas include: aerospace, precision machinery, hydraulic seals, and high-end motors.

Although wave springs are not very familiar to some people, you need to know that its scope of application is very wide. A wave spring is an elastic element with several peaks and valleys on a thin metal ring. Therefore, under normal circumstances, it is mainly used in occasions where the load and deformation are not large, and the spring stiffness is required to be small and the axial preload must be applied. Therefore, they are especially suitable for some applications requiring weight reduction and some applications restricted by small installation space.

Comparing stainless steel wave spring and carbon steel spring:

1. Different material composition.
The main disadvantage of carbon steel wave spring is that it is easy to rust, especially in high temperature and high humidity environment. Once rusted, the metal structure of the material corrodes, causing the material to deform and break. Therefore, if the ambient temperature and humidity of the product are high, stainless steel wave spring should be selected.
2. The production process is different.
The production process of carbon steel material is to obtain the high hardness of the spring produced by the low hardness base material through quenching and tempering. This process results in poor toughness and low service life of carbon steel materials, and the phenomenon of overall spring fracture in practical applications. The stainless steel material is obtained by several calendering by a low hardness base metal mill.
3. Material price difference.
Since the stainless steel material has a chromium content of 16-18% and a nickel content of 6%-8%, the price is 2-3 times more expensive than carbon steel. The same specification of spring, stainless steel spring will be about 2 times more expensive than carbon steel spring.
The spring force of stainless steel spring is lower than that of carbon steel spring, the hardness is lower than that of carbon steel wire, but the service life is long; carbon steel spring wire is easier to rust than stainless steel spring wire, and has higher requirements for the use environment.

Surface treatment of wave springs:

There are several common methods for surface treatment of springs, such as bluing, phosphating, electroplating, and electrophoresis.

Oxidation: Heat the spring to an appropriate temperature in air or chemicals to form a blue (or black) oxide film on the surface to improve the corrosion resistance and appearance of the wave spring.

Blackening: The same as the oxidation principle, the spring is heated in the air or directly immersed in a concentrated oxidizing solution to produce a very thin oxide film on the surface of the wave spring. Material protection technology.

The surface of the wave spring should be smooth, no rust, no burrs, no cracks and a uniform oxide layer.

Lisheng Spring is a professional linear wave spring wholesaler, you are welcome to come to consult.

Advantages of linear wave spring

Linear wave springs are mechanical devices that are used to provide a preload on a fastener or to maintain the position of a component. They offer several advantages over traditional coil springs, including:

  1. Space savings: Linear  springs have a smaller profile and take up less space than traditional coil springs, making them ideal for applications where space is limited.
  2. Increased force: Linear wave springs can provide a greater force than traditional coil springs of the same size, making them ideal for applications where a high preload is required.
  3. Consistent force: Linear  springs provide a consistent force throughout their deflection range, unlike traditional coil springs which lose force as they are compressed.
  4. Low solid height: Linear wave springs have a low solid height which is the height of the spring when it is not compressed. This means they can be used in applications where space is limited.
  5. Low coefficient of friction: Linear springs have a low coefficient of friction, which means they can be installed and removed easily.
  6. Durability: Linear  springs are made of high-quality materials and are designed to withstand high loads and temperatures, making them more durable than traditional coil springs.
  7. Customizable: Linear springs can be customized to specific requirements, such as size, shape, and material.
  8. Lightweight: Linear  springs are lightweight, making them easier to handle and install.

Overall, Linear wave spring can be a great option for applications where space is limited, high force and consistent force is needed, as well as consistent performance over time and ease of installation.

Materials Available

OIL TEMPERED (SAE1070-1090), HARD DRAWN SAE 1060 – 1075, stainless steel 304,316,631, 17-7PH(SUS), beryllium copper, phosphor copper, 65Mn, A-286, Inconel Alloy X-750, X-718, Elgiloy, MONEL K-500, MONEL 400 etc.

Processing Steps

Design → Drawing→ Flat the wire → CNC Machining → Heat treatment → Surface → Finishing → Quality Inspection → Packing


Part Number LLS12188-1 LLS12188-2 LLS12188-3 LLS12188-4 LLS12250-1 LLS12250-2 LLS12250-3 LLS12250-4
Number of Waves 1 2 3 4 1 2 3 4
0.012 0.012 0.012 0.012 0.012 0.012 0.012 0.012
0.188 0.188 0.188 0.188 0.25 0.25 0.25 0.25
1.5 3 4.5 6 1.5 3 4.5 6
Free Height
0.225 0.225 0.225 0.225 0.225 0.225 0.225 0.225
1.5 5.6 10.4 14.8 2.2 7.8 13.9 19.8
Work Height
0.125 0.125 0.125 0.125 0.125 0.125 0.125 0.125
Spring Rate
11 91 136 182 15 121 181 242

Wave spring measurements: