Disk
DISK SPRING

- Feature
-
In case of the disc spring, accumulated energy per unit volume is much greater than that of the coil spring so it shows a very big loading capacity with short stroke in small space. A loaddisplacement curve - straight line or nonlinear type - is available according to the conditions for use. Depending on increase/decrease of the sheets of the disc spring or on series/parallel/combination, the spring can have different characteristics. If it is used within the allowable stress, its lifetime is long. It is good at absorbing shocks and its shock-absorbing efficiency becomes high if the springs are piled up for use,
- Usage
-
For nuclear power plants, safety valves, shock-absorbers of large industrial equipment, control valves, shock-absorbing springs in hydraulic cylinders, rolling stands, and shock-absorbers to stand big load in small space
- Criteria of selecting materials according to the use condition of disc spring (for reference)
-
Materials Heat
CorrosionCorrosion
ResistanceFatigue
ResistancePrice Operation
TemperatureRemarks SUP10(50CR V4) Not bad Not good Good Not bad 200C SAE1070 Not good Not good Not bad Cheap 100C SUH660 Not bad Good Not good Expensive 300C Non -
magneticSUS 304 Not bad Not bad Not good Not bad 300C SUS 301 Not bad Not bad Not good Not bad 300C INCONEL X-750 Very Good Good Not good Very
expensive500C Non -
magneticSKD 4 Good Not good Not bad Not bad 400C SUS 630 Not bad Not bad Not good Not bad 300C C5191 Not good Good Not good Expensive 100C - Any other material than described above can be used for special purposes
- You are recommended to discuss with the engineers of Daewon Spring for the design and the material of springs
- Specification
-
Record of specification in ordering disc springs Classification Special Requirements Remarks Material in use Normally SUP 10 Choose the material based on the manufacturer's
standards unless specifiedThickness of
material (t)mm Inner diameter of
spring (Di)mm Outer diameter of
spring (De)mm Outer height of
spring (Lo)mm Inner height of
spring (Ho)Vol Designation of
spring featuresHeight Load Management is done based oon the manufacturer's
reference value in case there is no designated height and load.mm kgf Shape of edge end Facing required Surface management
after moldingShot peening Surface treatment Black phosphate
coating treatmentTreatment with rust preventive oil is possible upon request Use or conditions for use Record of use condition Surrounding temperature, humidity, and method of use
(series connection, parallel connection, combination connection)Other specifications applicable DIN 2092, 2093
Allowable Error A. External & Internal Error Internal Diameter (De) /
External Diameter (Di)External Diameter Tolerance
(mm)nternal Diameter Tolerance
(mm)3 ~ 6mm below 0 ~ + 0.12 0 ~ + 0.12 6 ~ 10mm below 0 ~ + 0.15 0 ~ + 0.15 10 ~ 18mm below 0 ~ + 0.18 0 ~ + 0.18 18 ~ 30mm below 0 ~ + 0.21 0 ~ + 0.21 30 ~ 50mm below 0 ~ + 0.25 0 ~ + 0.25 50 ~ 80mm below 0 ~ + 0.30 0 ~ + 0.30 80 ~ 120mm below 0 ~ + 0.35 0 ~ + 0.35 120 ~ 180mm below 0 ~ + 0.40 0 ~ + 0.40 180 ~ 250mm below 0 ~ + 0.46 0 ~ + 0.46 250 ~ 315mm below 0 ~ + 0.52 0 ~ + 0.52 315 ~ 400mm below 0 ~ + 0.57 0 ~ + 0.57
B. Thickness & Height Load Error Type Thickness (t) mm Thickness (t)
Tolerance mmHeight (Lo)
Tolerance mmLoad Tolerance
(S = 0.75*ho%)1 Type 0.2 ~ 0.4 + 0.02 ~ - 0.03 + 0.075
- 0.025+ 25
- 7.50.5 ~ 0.6 + 0.025 ~ - 0.035 0.7 ~ 0.8 + 0.030 ~ - 0.040 0.9 + 0.035 ~ - 0.045 2 Type 1.0 + 0.035 ~ - 0.045 + 0.10
- 0.05+ 15
- 7.51.1 ~ 1.25 + 0.040 ~ - 0.050 1.5 ~ 1.75 + 0.045 ~ - 0.055 2.0 + 0.050 ~ - 0.060 2.25 ~ 2.5 + 0.055 ~ - 0.065 + 0.15
- 0.053.0 ~ 3.5 + 0.060 ~ - 0.075 3 Type 4.0 ~ 14.0 +/-0.08 +/-0.20 +/-5