38/5/2 Spring Germany durovis Model 38/5/2 Price

38/5/2 spring is a special type of extension spring, suitable for applications with large elongation and non-increasing load. Constant force springs consist of spiral metal strips; the inner side of the strip is curved so that each coil wraps tightly around the inner coil. When the metal strip is stretched (twisted), internal stress resists the load force, exactly like a standard extension spring, but the spring rate is nearly constant (zero). See the load/torsion diagram. In use, ID is typically used to wind this spring tightly onto a drum, with its free end connected to the load, acting like a counterweight. Alternatively, the free end can be fixed, allowing the spring itself to provide the working force, similar to carbon brushes in electrical devices.

38/5/2 Spring Introduction

Designed based on the principle of moment balance. Within the permissible load displacement, the load moment and spring moment remain balanced. For pipes and equipment supported by constant hangers, a constant supporting force is provided during displacement, thereby avoiding additional stress on the piping and equipment. Constant hangers are generally used where displacement stress needs to be reduced, such as suspended parts of power plant boiler bodies, steam, water, flue gas, and air ducts in power plants, burners, and similar support requirements in the petroleum and chemical industries. It is a mechanical component that works using elasticity. Components made of elastic material deform under external force and return to their original shape after the force is removed. Also known as "spring". Generally made of spring steel. Springs are complex and diverse; classified by shape, they mainly include helical springs, spiral springs, leaf springs, and special-shaped springs.

38/5/2 Spring Classification

1) Torsion Spring: Torsion springs (torsional springs) utilize the lever principle, twisting or rotating elastic materials with softness and high toughness to store significant mechanical energy. They are springs that withstand torsional deformation, with working coils either closely wound or spaced. The ends of torsion springs are processed into various shaped arms, ranging from single to double torsion, and even various torsion bar deformations, formed according to design. Torsion springs are commonly used in balancing mechanisms in machinery and are widely applied in automotive, machine tool, and electrical industrial production. 2) Compression Spring: Compression springs are helical springs that withstand axial compressive forces. Springs are generally divided into equal-pitch and variable-pitch types. Shapes include cylindrical, conical, convex, concave, and a small number of non-circular forms. There is a certain gap between the coils of a compression spring; when subjected to external load, the spring compresses and deforms, storing deformation energy. Variable-pitch springs are becoming more common, not limited to equal-pitch springs, as they can perform differently in various environments. 3) Carbon Nanotube Spring: The diameter of carbon nanotube springs can reach hundreds of micrometers, with lengths up to several centimeters. Their spinning structure has broad application prospects, potentially applicable in stretchable conductors, flexible electrodes, micro strain sensors, supercapacitors, integrated circuits, solar cells, field emission sources, and energy dissipation fibers, making it possible to prepare visible carbon nanotube electronic devices. They are also expected to be used in medical devices, such as tension-sensing bandages. This new structure can also be developed into multifunctional carbon nanotube fiber composites for utilization. 4) Extension Spring: Extension springs (tension springs) are helical springs that withstand axial tensile forces. They are generally manufactured from round cross-section materials. When not under load, the coils of an extension spring are usually tightly closed with no gap. They work using the rebound force (tensile force) after stretching, used to control component movement, store energy, measure force magnitude, etc., and are widely used in machines and instruments. Hook forms include side hook, long hook, English hook, German hook, semi-circular hook, and duckbill hook. Materials include stainless steel, music wire, high-carbon steel, phosphor bronze, beryllium copper, and oil-tempered alloy spring steel. 5) Air Spring: An air spring is a non-metallic spring that achieves elastic action by adding pressurized air into a flexible sealed container, utilizing the compressibility of air. It can be roughly divided into bladder type and diaphragm type. Air springs have excellent elastic characteristics; when used in suspension systems of high-end vehicles, they significantly improve vehicle smoothness and thus greatly enhance riding comfort. Therefore, air springs are widely used in automobiles and railway locomotives. Additionally, due to many advantages over ordinary steel springs, they are also applied in some mechanical equipment and precision instruments.

38/5/2 Spring Features and Applications

Features: Compared to ordinary compression or extension springs, their spring force is very constant, providing a nearly linear force output. This ensures that the product does not change due to variations in spring force during use. In narrow and long spaces, space usage can be minimized as much as possible, enhancing possibilities for aesthetic product design. Constant force spring applications: lift fans, LCD monitors, sliding windows and doors, supermarket automatic checkout counters, motor carbon brush pressing devices, cables, stapler mainsprings, power tools, car ashtrays, locomotive carbon brush accessories, medical instruments, mobile phone holders, etc.

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