German schiltz springs schiltz models schiltz prices

schiltz springs are conical disc-shaped and can be used individually or in series or parallel combinations. They bear static or dynamic axial loads at the upper inner edge and lower outer edge, deforming under compression until flattened to store energy as a live load. When necessary, they automatically convert into additional compressive load required for sealing, reducing the continuous tightening requirements for gaskets and packing. Disc springs are special springs that are conical in the axial direction and bear loads; after deforming under load, they store potential energy. When bolts loosen, the disc spring releases part of the potential energy to maintain pressure between flange connections to meet sealing requirements. The stress distribution of disc springs decreases uniformly from the inside out, achieving high compensation force with low travel.

schiltz spring features

1) High stiffness, strong buffering and vibration absorption capability, capable of bearing large loads with small deformation, suitable for applications with limited axial space. 2) Features variable stiffness characteristics, with a wide range of non-linear properties. 3) Using the same disc springs in different combination methods allows spring characteristics to vary significantly. Combination methods such as face-to-face or nested stacking 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 higher the load. 5) Short travel, heavy load, small space requirement, convenient combination, easy maintenance and replacement, economical, high safety, and long service life.

schiltz spring materials

Disc springs are mostly manufactured from cold-rolled or hot-rolled strip steel, plates, or forged blanks (forging ratio not less than 3). Common materials include spring steels such as 60S2MA and 50CVA. For thicknesses less than 1.1, high-carbon steel can also be used. Performance requirements for disc spring materials include high ultimate strength, yield limit, elastic limit, and fatigue limit after heat treatment, along with high impact toughness, plasticity, and a high yield-to-tensile strength ratio. To meet these performance requirements, high-quality cold-rolled or hot-rolled steel strips or plates are widely used domestically and internationally. For disc springs with thickness greater than 6 mm, forged blanks are used, primarily consisting of medium-carbon low-alloy spring steel (silicon-manganese or chromium-vanadium spring steel) and high-quality carbon spring steel. Due to the high silicon-manganese content and low chromium-vanadium content in China, disc springs mainly use 60Si2MnA. Comparing the two, 50CrVA has better hardenability, temper stability, and impact toughness than 60Si2MnA, but 50CrVA is more expensive and suitable for applications with high fatigue requirements.

schiltz spring features

Suspensions using torsion bar springs have lighter mass, simpler structures, and require no lubrication. By adjusting the installation angle of the fixed end of the torsion bar spring, automatic adjustment of vehicle body height is easily achieved. Torsion bar springs store significant elastic energy per unit volume and have low mass. Compared to coil springs, torsion bar springs are compact and easier to arrange. They are widely used in off-road vehicles, light passenger cars, and trucks. Torsion bar springs can be classified by cross-sectional shape into circular, tubular, and leaf types. Solid circular torsion bars have simple structures and are the most commonly used. To assemble the torsion bar, both ends are machined with splines, hexagonal, square, etc. shapes. Due to the smaller size of spline ends, spline connections are mostly used. Generally, the major diameter of the spline is 1.2 to 1.3 times the working diameter of the torsion bar, and the spline length is approximately 1.4 times the major diameter of the spline. As long as the crushing stress of the spline teeth is within permissible limits, the spline teeth should not be excessively long. Torsion bar springs generally use involute splines according to GB3478. The JSB2705 standard recommends a standard pressure angle of 45° for splines, with modules of 1mm and 0.75mm. To facilitate assembly, some torsion bar springs have unequal diameters at both ends or a blind tooth machined on the spline teeth at both ends.

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