Description
1.performance characteristics
The height to thickness ratio (h0 / t) of series A disc spring is 0.75 (h0 for the free height of the spring ). Its deformation and force value are as follows:
2.Specifications
The specifications of the products refer to Din2093 of German standard, GB/T1972-2005 of Chinese standard and 20813 of American standard for A series disc spring.
The details are as the following table:
Table1:Conical disc springs of series A
Group |
De |
Di |
t |
ho |
l0 |
F |
1 |
8 10 12.5 14 16 18 20 |
4.2 5.2 6.2 7.2 8.2 9.2 10.2 |
0.4 0.5 0.7 0.8 0.9 1 1.1 |
0.2 0.25 0.3 0.3 0.35 0.4 0.45 |
0.6 0.75 1 1.1 1.25 1.4 1.55 |
210 329 673 813 1000 1250 1530 |
2 |
22.5 25 28 31.5 35.5 40 45 50 56 63 71 80 90 100 112 |
11.2 12.2 14.2 16.3 18.3 20.4 22.4 25.4 28.5 31 36 41 46 51 57 |
1.25 1.5 1.5 1.75 2 2.25 2.5 3 3 3.5 4 5 5 6 6 |
0.5 0.55 0.65 0.7 0.8 0.9 1 1.1 1.3 1.4 1.6 1.7 2 2.2 2.5 |
1.75 2.05 2.15 2.45 2.8 3.15 3.5 4.1 4.3 4.9 5.6 6.7 7 8.2 8.5 |
1950 3910 2850 3900 5190 6540 7720 12000 11400 15000 20500 33700 31400 48000 43800 |
3 |
125 140 160 180 200 225 250 |
64 72 82 92 102 112 127 |
8(7.5) 8(7.5) 10(9.4) 10(9.4) 12(11.25) 12(11.25) 14(13.1) |
2.6 3.2 3.5 4 4.2 5 5.6 |
10.6 11.2 13.5 14 16.2 17 19.6 |
85900 85300 139000 125000 183000 171000 249000 |
Supplementary specification of stainless steel disc springs is for another reference standard.
3.The supplementary specification of materials and environment
The common material of disc spring is spring steel of 51 crv4. To meet the requirements of special environment, we can also use other materials. For example, we apply nickel base alloy or nickel cobalt base alloy to metallurgical equipment in high temperature environmemt. We apply stainless steel to fluid valve equipment in corrosive condition. We can also use dacroment to do the anti-corrosion surface treatment.
Material |
Brand |
Applicable temperature(℃) |
Applicative environment |
Spring steels |
51CrV4 |
≤200 |
Normal |
Nickel-alloy |
Inconel X718,X750,Nimonic 90 |
≤800 |
High temperature |
Stainless steel |
SUS301,304,316,15-7PH |
- |
Corrosive environment |
4.Limit deviation
The limit deviation of standard components is in the following table (the default is secondary precision if unspecified ), and non-standard component is according to the predetermined tolerance requirements.
4.1 Inside diameter and outside diameter, thickness, free height.
4.2 load