Disc Springs

Disc springs

Large forces, short distances, small installation space

COMPACT POWER PACKAGES IN ALL VARIANTS

Disc springs are flat, conical annular shells that can be loaded in the axial direction. Depending on the application, they can be loaded either as single springs or as spring columns, both at rest (statically) and in motion (dynamically). Force is usually applied via the upper inner edge and the lower outer edge. Either individual disc springs or spring assemblies, composed of several springs, can be alternately layered in a column.

HÄUSSERMANN disc springs efficiently support many dynamic processes, even under extreme force and stress conditions, as well as challenging environmental conditions.

CHARACTERISTICS

high spring force with small spring travel, large force absorption with small installation space
any characteristic curves / spring characteristics can be achieved: spring characteristics with a linear, degressive or progressive course, including due to spring dimensions and spring arrangement – stacks, multiple layers (spring columns) and combinations
characteristic or column length can be varied by a large number of possible combinations of the individual disc springs within wide limits
several conventional disc springs can be replaced by one more powerful HÄUSSERMANN disc spring: more power for more space
creation of an individual disc spring construction kit to save the variants and tools for your company
thanks to the higher power density, the dimensions of the disc springs and the whole component can be reduced and new engineering freedom used
static use (storage of potential energy) and dynamic use with vibratory stresses

long service life under dynamic load (correct dimensioning)
concentric force transmission due to rotationally symmetrical shape
High-end quality with high-quality materials
customized design, tailored solutions
special sizes and developments
better use of space than with other spring types, large spring force with low spring travel
no readjustment under permissible stresses
long service life under extreme conditions and precise compliance with force and dimensional requirements
high inherent damping, especially with multiple layering
wide range of applications

Our engineers are on hand for the precise calculation and design; in addition, you can use our special Disc Spring Designer App yourself at any time

VARIANTS, DESIGNS AND PACKAGES

We offer a wide package of disc spring solutions and variants for a wide variety of applications

Single springs with highly precise specifications – optimally adapted to demanding applications
Disc springs, unslotted oder slotted (tongue disc spring): e.g. for ball bearings. They ensure backlash-free running and reduce running noises here. In addition, they contribute to tolerance and play compensation, to compensation of movements and heat-induced changes in length
We manufacture disc spring columns/assemblies with special properties according to customer specifications and ready for installation

Flexible design of spring characteristics

Thanks to the geometry of the disc springs, several similar elements can be layered/stacked and a wide variety of spring characteristics can thus be achieved. The spring rate, force and spring travel change when stacking disc springs, depending on the combination. It is important to guide the disc stack accurately on the inner or outer diameter.

Parallel connection – same-direction disc spring arrangement: The spring forces add up while the spring travel remains constant. The deflection per load unit increases with parallel stacking.
Series connection – alternating disc spring arrangement: The spring travel adds up while the force remains constant. The load per deflection unit increases with series stacking.

Progressive characteristic curves can be achieved when disc springs of different thicknesses are suitably arranged. For this purpose, several disc springs of different material thicknesses or the same disc springs with intermediate rings of different thicknesses or different layering types can be used.

Thanks to various combinations of series and parallel connection, the characteristic curve of a spring stack can be designed extremely flexibly in a large number of variants. HÄUSSERMANN disc springs therefore provide you with a very wide range of possible applications.

Where DIN ends,
HÄUSSERMANN starts big time

Not off the shelf, but rather custom-made and precisely in line with our customers’ requirements – that is HÄUSSERMANN premium quality that is becoming established around the world.

Our “customized solutions” are available in all design variants, a wide range of geometries, individual characteristics, spring deflections, power densities, overall heights and diameters from 60 to 800 mm. As such, the field of application of our products extends well beyond what you are familiar with from DIN manufacturers. And our IATF 16949 certified solutions can be found in industries with extreme quality requirements.

We use high-end engineering with precision to meet your requirements in terms of force, travel, installation space, performance and service life for each individual product. From prototypes to batch sizes of 1 to 2 million.

We are the specialists for large springs, develop solutions together with our customers and produce on our own machines built for us with special manufacturing processes. This allows us to achieve outstanding life performance of our products with narrow force tolerances and high fatigue strength.

Throughout the entire development process, application advice plays a key role for a permanently safe high-end solution that sets standards.

Materials that can withstand a lot

Standard materials (C75S and 51CrV4 – established in the market as standard by HÄUSSERMANN), corrosion-resistant materials in different variants (e.g. X10 CrNi 18-8, X7 CrNiAl 17-7), coating processes and special materials such as steels for higher temperatures (X22 CrMoV 12-1, X39 CrMo 17-1), as well as chromium-vanadium steel 50CrV4 according to EN 10089 and EN 10132-4 and stainless steel EN 10720-2 (1.4310) are used.

DISC SPRINGS: SETTING STANDARDS LIKE NO OTHER

Our highly precise disc springs open up all the options that a disc spring can offer for designers. With HÄUSSERMANN, you can push the limits of physics. The main features are:

All (any) disc spring characteristics can be achieved. Our special disc springs are the only type of spring allowing horizontal and negative spring characteristics to be achieved
Extended spring travel due to the possibility of pushing the spring through far beyond the flat position and due to the design as a tongue disc spring
High level of quality for precise compliance with the force tolerances as well as a high level of stability and long service life
Short overall length enables compact, rigid and torsionally stiff designs
No imbalance or vibrations due to rotational symmetry
No buckling or bulging even at high speeds

DISC SPRINGS WITH PARTIALLY HORIZONTAL SPRING CHARACTERISTICS

Spring pressure can be kept constant over a more or less long spring travel
Clearance compensation of moving parts, such as ball bearings, seal packings etc.
Expansion compensation for temperature changes in screw connections etc.
Compensation of installation tolerances
Automatic adjustment in wear operations in overload slipping clutches, multi-disc clutches and brakes, disc clutches and brakes etc. The clutches equipped like this do not require any adjustment work until the friction linings are replaced and are thus completely maintenance-free

DISC SPRINGS WITH PARTIALLY NEGATIVE SPRING CHARACTERISTICS

The best known use of these disc springs is in motor vehicle clutches. HÄUSSERMANN has carried out pioneering work in Europe here and laid the foundation for today’s successful disc spring clutches in passenger cars, trucks and tractors. Continuously variable transmissions are another area in which our special disc springs with partially negative characteristics are used to good advantage.

Lighter pedal work due to reduced disengaging force:
The tongues of the slotted disc spring reduce the disengaging force of the vehicle clutch. The force of the disc spring drops during disengagement (in contrast to the conventional helical compression spring), making the pedal work considerably easier
Adjustment no longer necessary:
With gradual wear of the friction lining, the spring force does not decrease but increases. The wide wear compensation of the disc spring makes adjustment of the clutch superfluous
A smaller overall length of the clutch is possible
As a rotationally symmetrical part, the disc spring does not produce any imbalance
Even high speeds have no impact on the work of the disc spring, in contrast to the coil spring

Safe choice:
Important criteria

The right choice of disc spring is vital for maximum functionality, performance and safety. This minimizes complaints, high replacement and follow-up costs, hassle and reputational damage with customers as far as possible. High-quality, optimally designed spring solutions from HÄUSSERMANN pay off.

SOME IMPORTANT SELECTION CRITERIA ARE:

The design should meet your own quality requirements
The disc spring should already be set (prevents setting after the first load)
Suitable material for surroundings and stress (high-quality materials e.g. for high temperatures or corrosive environment)
Select a suitable surface for protection against corrosion and environmental influences in the application area

Take advantage of the HÄUSSERMANN expertise with individual advice and design: The earlier we are involved in development, the better we can support you. Our engineers are on hand for the selection, precise calculation and design. You have a direct line to the experts, saving time.