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IIS BELLEVILLE WASHER 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 and 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 Washer DIN 6796
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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.
IIS Belleville washers are made
from various Carbon steel grades, Chrome-Vanadium steel,
Stainless steel etc.
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Quality
and Testing
IIS Belleville Washers are tested as per DIN 6796 and DIN
267 Part 26. Most thicker sizes are supplied in phosphated
& oiled condition.
IIS has ready stock of all standard sizes
of Belleville washers Carbon Steel material. Other materials
are also available on request.
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Heavy Duty Belleville Washers As
per DIN 6796
Material : 50CrV4 or Spring Steel CK75
Nominal
Bolt Size mm
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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 |
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