German ELESA springs, ELESA models, ELESA prices

ELESA springs are elastic elements with several peaks and valleys on a thin metal ring. They are typically used in applications where the load and deformation are small, requiring low spring stiffness and the application of axial preload. Wave springs are particularly suitable for weight-sensitive applications and those constrained by limited installation space. Typical application areas include aerospace, precision machinery, hydraulic seals, and high-end motors. They are thin, ring-shaped elastic metal elements composed of several peaks and valleys. This product uses high-quality spring steel 65Mn (60Si2MnA/50CrVA /0Cr17Ni7Al /SUS304), undergoes specific heat treatment, and depending on the specific conditions, the hardness is generally controlled between HRC44 and 55. The surface is blackened, providing good elasticity. Wave springs are widely suitable for industries such as motors, textile machinery, hydraulic equipment, and automotive. They are mainly installed in bearing housings or bores suitable for their nominal dimensions. With very small installation space, they have the special function of reducing noise and vibration.

ELESA Spring Features

1) High stiffness, strong buffering and vibration absorption capability, capable of withstanding large loads with small deformation, suitable for applications with limited axial space. 2) Features variable stiffness characteristics; this type of spring has a wide range of nonlinear characteristics. 3) By using the same disc springs in different combination methods, the spring characteristics can be varied over a wide range. Combination methods such as face-to-face or stacked arrangements can be adopted, as well as combinations with different thicknesses and numbers of discs. 4) When stacked, for the same deformation, the greater the number of springs, the greater the load. 5) Short stroke, heavy load, small space requirement, convenient for combined use, easy maintenance and replacement, economical, high safety, and long service life.

ELESA Spring Structure and Principle

The torsion bar spring itself is a torsion bar made of spring steel. The cross-section of the torsion bar is usually circular, with a few being tubular or rectangular. Its ends can be shaped as splines, square, hexagonal, or cylindrical with flat surfaces, so that one end can be fixed to the vehicle frame and the other end to the suspension arm, which is connected to the wheel. One end of the torsion bar spring is fixed to the vehicle frame, while the other end is connected to the wheel via the suspension arm. When the wheel encounters an obstacle on the ground and bounces upward, it drives the suspension arm to rotate around the axis of the torsion bar by a certain angle, causing the torsion bar to undergo torsional deformation (elastic deformation). At the same time, the elastic energy stored in the torsional deformation of the torsion bar will be released when the wheel leaves the obstacle, allowing the force transmission mechanism and the wheel to quickly return to their original positions. During the manufacturing of the torsion bar spring, a permanent torsional deformation is pre-applied to the torsion bar to give it a certain level of prestress. The direction of the pre-applied torsion is the same as the direction of torsion when the torsion bar is installed and working on the vehicle, with the aim of reducing actual stress during operation and extending its lifespan. Note that left and right torsion bars cannot be interchanged.

ELESA Spring Manufacturing Process

1) Cold forming process capabilities for single-shot automation. Cold forming machines have developed up to 12 jaws. Wire within the (0.3–14) mm range can be formed in one shot on a 8-jaw forming machine. Development directions for forming process equipment: (1)) Improve forming speed; the main trend is to increase the forming speed of the equipment, i.e., production efficiency; (2)) Improve equipment durability by enhancing the precision of equipment parts and strengthening heat treatment effects; (3)) Add length sensors and laser rangefinders to implement automatic closed-loop control of the manufacturing process for CNC forming machines. 2) Cold forming process range capabilities. Large wire diameter spring coiling machines can reach a maximum specification of 20mm, =2000MPa, with a winding ratio of 5. Cold forming processes for variable-diameter or constant-diameter material Minic-Block springs and eccentric springs still have limitations. 2) Hot forming process speed capabilities. In China, forming for (9~25) mm specifications is limited to CNC2-axis hot coiling machines, with a maximum speed of 17 pieces per minute. There is a significant gap compared to developed countries. 2) Control capabilities for large spring hot forming processes. Due to the exclusive use of CNC2-axis hot coiling machines, shape control lacks action in three directions, resulting in poor precision; furthermore, there are no automatic bar rotation control and adjustment mechanisms, so the level and capability of hot coiled spring forming processes are relatively low. Consequently, the precision level and surface oxidation/decarburization level of the springs are also relatively low.

Weidou Intelligent Technology specializes in selling German ELESA compression springs, ELESA extension springs, ELESA helical springs, ELESA wave springs, ELESA constant force springs, ELESA torsion springs, ELESA bending springs, ELESA disc springs, ELESA ring springs, ELESA leaf springs, ELESA torsion bar springs, ELESA tension springs, ELESA retaining rings, ELESA tension springs, ELESA die springs. ELESA products are original imports from Germany. We welcome inquiries and orders from customers.