IIS Manufactures & Supplies Belleville Washer as Per DIN 6796
IIS manufactures Belleville washer in imperial as well as metric sizes. Belleville washers also called conical spring washers are manufactured as per DIN 6796 & DIN 6908. IIS Belleville washers are designed specifically for Heavy Duty Bolted section such as Bus Bars, Transformers, Rectifiers, Heat Exchangers, Transmission etc. These washers are intended to counteract the effect of setting which results in bolt/nut assemblies working loose. They do not effectively prevent loosening of the assembly under varying radial load and are designed for use with short bolts predominantly subject to thrust. Belleville washers are high stressed components and cannot be used for dynamic loading and infrequent varying load applications. The force give in the table below is approximate.
Conical Spring washers as per DIN 6908 are intended for use with screw and washer assemblies as specified in DIN 6900 part 5.They are designed to use with bolted connections with bolts of property classes 8.8 to 10.9 (as specified in ISO 898 Part 1). IIS Belleville Washers are tested as per DIN 6796 and DIN 267 Part 26.
IIS has ready stock of all standard sizes of Belleville washers in High Carbon Steel material, Stainless Steel 300 series and 17-7 PH.
Other materials are also available on request View Details
Surface Technology & Coating Services
IIS offers a variety of coating services on all parts manufactured. List of coatings are available below. For other specific coating and applications
Please refer this link
Heavy Duty Belleville Washers As per DIN 6796
Material : 50CrV4 or Spring Steel CK75
| Nominal Bolt Size mm | d1 H14 mm | d2 H14 mm | s3) mm | h max 1) mm | h min 2) mm | Flattening Force N | Residual Spring Force N |
|---|---|---|---|---|---|---|---|
2 4) |
2.2 |
5 |
0.4 |
0.60 |
0.50 |
920 |
- |
2.5 4) |
2.7 |
6 |
0.5 |
0.72 |
0.61 |
1540 |
- |
3 4) |
3.2 |
7 |
0.6 |
0.85 |
0.72 |
2350 |
- |
3.5 4) |
3.7 |
8 |
0.8 |
1.06 |
0.92 |
3160 |
- |
4 |
4.3 |
9 |
1.0 |
1.30 |
1.12 |
4050 |
1400 |
5 |
5.3 |
11 |
1.2 |
1.55 |
1.35 |
6700 |
2300 |
6 |
6.4 |
14 |
1.5 |
2.00 |
1.70 |
9400 |
4200 |
7 |
7.4 |
17 |
1.75 |
2.30 |
2.00 |
13700 |
6200 |
8 |
8.4 |
18 |
2.0 |
2.60 |
2.24 |
17200 |
7700 |
10 |
10.5 |
23 |
2.5 |
3.20 |
2.80 |
27500 |
12400 |
12 |
13 |
29 |
3.0 |
3.95 |
3.43 |
40000 |
18000 |
14 |
15 |
35 |
3.5 |
4.65 |
4.04 |
55000 |
25000 |
16 |
17 |
39 |
4.0 |
5.25 |
4.58 |
75000 |
34000 |
18 |
19 |
42 |
4.5 |
5.80 |
5.08 |
95000 |
57000 |
20 |
21 |
45 |
5.0 |
6.40 |
5.60 |
122000 |
73000 |
22 |
23 |
49 |
5.5 |
7.05 |
6.15 |
152000 |
91000 |
24 |
25 |
56 |
6.0 |
7.75 |
6.77 |
175000 |
122000 |
27 |
28 |
60 |
6.5 |
8.35 |
7.30 |
230000 |
161000 |
30 |
31 |
70 |
7.0 |
9.20 |
8.00 |
280000 |
196000 |
Heavy Duty Belleville Washers As per DIN 6908
Material : 50CrV4 or Spring Steel CK75
M |
D1_MIN |
D2_MAX |
S_MAX |
S_MIN |
H_MAX |
H_MIN |
2.5 |
2.25 |
6 |
0.5 |
|
0.72 |
0.61 |
3 |
2.75 |
7 |
0.6 |
|
0.85 |
0.72 |
3.5 |
3.2 |
8 |
0.8 |
|
1.06 |
0.92 |
4 |
3.6 |
9 |
1 |
|
1.3 |
1.12 |
5 |
4.55 |
11 |
1.2 |
|
1.55 |
1.35 |
6 |
5.5 |
14 |
1.58 |
1.42 |
2.6 |
2.3 |
7 |
6.5 |
17 |
1.58 |
1.42 |
2.35 |
2.3 |
8 |
7.4 |
18 |
2 |
|
3.6 |
2.8 |
10 |
9.3 |
23 |
2.5 |
|
4.1 |
3.3 |
12 |
11 |
29 |
3 |
|
3.5 |
3.8 |
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