Whether blind rivets, self-clinching fasteners or thread inserts – our fastening technology components provide high-performance solutions for all industrial sectors from a single source!

Need help? Click here to access E-Shop guidelines.

MB 600-080

Design Guidelines

Wall thickness/distances from edge

As the radial expansion of the KOENIG Expander® sleeve occurs, the base material in which it will be anchored plastically deforms. The resultant strength, as well as the hydraulic pressure and temperature service conditions depending on the Expander type and characteristics of the base material, require minimum wall thickness, or distance from edge.

Untitled Document

Distance to external wall
Distance to exterior wall
Wall thicknesse between bores
The guideline values for minimum wall thickness and distance from edge (Wmin.) express these influencing factors. At these minimum values, only slight deformation on the exterior profile of the base material of less than 20 µm is likely. This does not affect the function of the KOENIG Expander®. Below the guideline values (Wmin.) the possibility of overloading the base material exists, which can adversely influence the function of the KOENIG Expander®. In such cases tests must be conducted.

Guideline values Wmin. for wall thickness and distance from edge

For KOENIG Expander® diametersd1 ≥ 4 mm: Wmin. = fmin. ⋅ d1
d1 < 4 mm: Wmin. = fmin. ⋅ d1 + 0.5 mm

Untitled Document

Base material Description
1
2
3
4
5
6
7
ETG 100
C15Pb
GG-25
GGG-50
AICuMg2
AIMgSiPb
G-AISi7Mg

Avg. tensile strength [N/mm²]

1000
560
250
500
480
340
300
Min. elongation
A5 [%]
6
6
-
7
8
8
4
Avg. ultimate strength
Rp 0,2 [N/mm²]
865
300
-
320
380
300
250
KOENIG Expander® series
Factor fmin.
MB 600
0.6
0.8
1.0
0.8
0.8
1.0
1.0
MB 700
0.6
0.8
1.0
0.8
0.8
1.0
1.0
MB 850
0.5
0.6
1.0
0.6
0.6
1.0
1.0
SK
0.5
0.6
1.0
0.6
0.6
1.0
1.0
HK 55
0.4
0.5
0.8
0.5
0.5
0.8
0.8
LP 900
0.3
0.3
0.5
0.3
0.4
0.5
0.5
LK 600
0.3
0.3
0.6
0.5
0.4
0.5
0.5
LK 950
0.3
0.3
0.6
0.5
0.4
0.5
0.5

Roundness tolerance

To assure reliable functioning of the KOENIG Expander® with regard to pressure performance and to assure leak tight sealing, a roundness tolerance of t = 0.05 mm must be held.

Untitled Document

By using a double lipped twist drill, the called out hole and roundness tolerances are reached. Better tolerances, particularly for larger diameter holes, can be held by using a triple lipped twist drill

Conicity of the bore

Within the effective sealing area of the KOENIG Expander®, the bore must be according to the data sheets. The bore lead in can be beveled up to a depth of 0.25 x d1 (LK: 0.15 x d1) because this area has no significant effect on the sealing function.

Untitled Document

MB series
SK series
HK series
LP series LK series

Required Installation Lengths

Untitled Document

 
dN
MB series
SK series
HK series
LP series
LK series
Threaded Plugs DIN 908
d1
l3 min
l4 min*
d1
l4 max
d1
l4 max
d1
l2 min
d1
l4 max
d1
l4 max
2.0
3.0
3.4
5.0
.
.
.
.
       
.
.
3.0
4.0
3.8
5.5
.
.
3.0
7.0
3.25
5.80
   
.
.
4.0
5.0
5.3
7.0
4.0
6.5
4.0
8.0
4.40
7.00
4.0
 4.0
.
.
5.0
6.0
6.3
8.5
5.0
7.5
5.0
9.5
5.40
8.00
5.0
 4.8
M 8x1
11.5
6.0
7.0
7.3
9.5
6.0
8.0
6.0
10.0
6.40
8.50
6.0
 5.3
M 8x1
11.5
7.0
8.0
8.3
11.0
7.0
9.0
7.0
11.0
7.40
8.50
7.0
 5.8
M 10x1
12.0
8.0
9.0
9.8
12.5
8.0
10.5
8.0
11.5
8.45
9.50
8.0
 6.8
M 10x1
12.0
9.0
10.0
10.8
13.5
9.0
11.0
9.0
13.0
9.60
10.00
9.0
 6.8
M 12x1.5
16.0
10.0
12.0
12.8
16.0
10.0
12.5
10.0
13.5
10.65
11.00
10.0
 6.8
M 12x1.5
16.0
12.0
14.0
14.5
18.0
.
.
.
.
12.75
12.00
12.0
 7.8
M 14x1.5
16.5
14.0
16.0
16.5
20.0
.
.
.
.
   
14.0
 8.7
M 16x1.5
16.5
16.0
18.0
18.5
22.5
.
.
.
.
   
16.0
11.5
M 18x1.5
17.5
18.0
20.0
21.5
25.5
.
.
       
.
.
M 20x1.5
19.5
20.0
22.0
24.5
28.5
.
.
       
.
.
M 22x1.5
19.5

dN = given nominal bore/system bore size

*Installation lengths MB series

The required installation length (I4) min. for MB plugs is for base materials with hardness greater than HB=90. For softer materials, deeper installation is required.  


Subject to technical alterations.