Testing of springs

Spring testing with universal testing machine inspekt solo

Metal springs are crucial for the function of many mechanical and mechatronic systems. They deform specifically under load and return to their original shape after being relieved. To ensure that they work reliably, their properties must be tested precisely.

The most important properties of a spring are:

Spring force - How much force a spring can apply
Spring travel - How far the spring moves under load
Spring work - The energy that the spring can store and release
Spring characteristic curve - The relationship between spring force and spring travel (linear, progressive, degressive or combined)

These characteristic values are determined by material tests in order to design the spring optimally for its intended use. Hegewald & Peschke offers various testing systems for the precise analysis of springs.

Product portfolio for testing springs

Test applications

Universal testing machines with compression plates with exchangeable pin

Universal testing machine inspekt table 20 kN

The compression plates are available with different capacities and for different specimen dimensions, e.g.:

Capacity: 20 kN*
Specimen dimensions compression springs:
- D= 4 – 87 mm*
- Max. spring length 100 – 300 mm*
Dimension/design: round Ø 150 mm*, 2x rigid / steel hardened 60 HRC, black oxide

* other versions on request

Note: The test setup for spring testing requires the load cell to be mounted on the lower fixed crosshead of the universal testing machine. The respective pin is mounted to the lower compression plate.

Universal testing machine inspekt table for spring testing

Further information on spring testing with the inspekt table

Universal testing machine with testing device for disc springs

Universal testing machine inspekt 100 kN

Testing device for disc springs of motor vehicles with force measurement and spring travel measuring system, Fmax=100 kN.

Various testing possibilities:

Testing of the actuation travel of the disc spring:
- Measurement of the force and the spring travel
- Non-destructive testing during production as part of quality assurance
Checking the uniformity of the bending of the spring tongues by scanning with a measuring probe

The test device consists of:

3 load cells below the tool holder,
upper thrust collar holder with block protection

Universal testing machine inspekt 100 kN for disc spring testing

Further information on testing disc springs

Universal testing machine for testing gas springs

Universal testing machine inspekt solo-L 1 kN

Testing system:

Universal testing machine inspekt solo 1 kN in L-design with an increased testing speed of 3000 mm/min.

Testing options:

Testing of gas springs in accordance with DIN EN 1335-3
- Load tests
- Life cycle tests by cyclic extension and retraction of the gas spring
- Determination of extension and retraction forces and friction effects

Universal testing machine inspekt solo 1 kN for gas spring testing

Further information on testing gas springs

Determining the spring rate for spring rods

Universal testing machine inspekt table 10 kN

Testing system:

Special version of the inspekt table testing machine for long springs
- centric through-hole in the lower crosshead - possibility of testing very long springs
- Nominal load of 10 kN - optimally matched to the required test forces

Test method:

Precise determination of the spring rate (e.g. when testing window fittings for roof windows)
- Determines how easy or difficult the window is to open or close
- Determines whether the window closes tightly

Universal testing machine inspekt table 10 kN for testing the spring rate

Further information on determining the spring rate for spring rods

Testing the durability and hardness of spring cores in mattresses

Combined test stand for mattresses

The test system is used for both durability and hardness testing of mattresses and innersprings in accordance with EN 1957 using rollers and load pads.

Durability test:

The permanent load is applied by a test roller (static load: 1400±7 N)

Hardness test:

The hardness measuring unit comprises a servoelectromotive test axis.

Determination of the hardness value H
Determination of the classification of the recumbent hardness Hs on a scale from 1 to 10
Determination of hardness loss after X cycles
Maximum force 2.5 kN

Combined test stand for testing the hardness and durability of mattresses and innersprings in accordance with EN 1957

Further information on the combined mattress test stand

Universal testing machines for testing mattresses and innersprings

Universal testing machine inspekt table 10 kN

Test system and test method:

Universal testing machine inspekt table 10 kN
Test area extension up to 1040 mm
Large lower compression plate can be moved

Test method:

Compression test of complete mattresses according to DIN EN 1957
Compression tests on springs e.g. according to DIN 2099-2

Universal testing machine inspekt table for testing mattresses with spring core

Further information on request

The ideal testing software for testing springs

Our universal testing machines are equipped with the LabMaster testing software, which enables user-friendly setup and execution of customer-specific test sequences. It ensures fast and reliable determination of relevant characteristic values such as spring force, spring travel, spring constant and spring characteristic curve.

LabMaster can be used to perform both alternating load tests (cyclic load tests) and static tests - made possible by the flexible parameterization of the test sequence via the block program. The test results can be statistically evaluated and displayed in customizable test protocols.

The software also offers a high degree of flexibility when integrating external measuring devices. Data can also be easily imported and exported for customer-specific software such as QDAS or SAP.

Further information on the testing software from Hegewald & Peschke