NORMACLAMP® - Hose Clamps
NORMACLAMP® GBS
or steel reinforcements and high shore hardnesses.
Heavy duty clamps to DIN 3017
Their distinguishing feature is the extremely high band tensile force.
NORMACLAMP® GBS are particularly suited for
The assembly of NORMACLAMP® GBS
is easily completed by
sealing suction and pressure lines with plastic
means of either manual, pneumatic or electric standard tools.
Short description of technical features
1
4
2
3
5
1
W1/W2/W4
3
Mechanically locked closure
New specially designed bolt with integrated spacer
= no welding points, no contact corrosion
= improved efficiency, cannot get lost
W5
4
Bridge = optimal hose protection
Hexagonal socket screw
5
Robust band with rounded edges
2
Reinforced loops
= protection against injuries and damage to the hose
= allow to withstand significantly higher torques
surface
Materials
W1*
W2*
W4
W5
x
x
x
x
* No Chromium VI used for surface treatment of closure unit
34
NORMACLAMP® - Hose Clamps
Clamp Types
NORMACLAMP® GBS
with QR closure
On request the NORMACLAMP® GBS is available with QRC
(Quick Release Closure). The hinged bolt can be quickly released
and enables the fast and easy assembly or disassembly of the
clamp.
Only available in W1 and W2!
NORMACLAMP® GBS
Multi-Part version
The 2-part version of the NORMACLAMP® GBS is an additional
clamp type in this range.
Technical features
Band tensile forces
The results of numerous test sequences proved that NORMA-
CLAMP® GBS are superior to comparable competitive products:
NORMACLAMP® GBS 46/20
Competitive
W1 zinc-aluminium
product
Band width
Material thickness (mm)
(mm)
W1
W2
W4
W5
M
SW
18
0.8
0.6
0.6
0.6
6
8
20
1.0
0.8
0.8
0.8
7
10
25
1.0
1.0
1.0
1.0
8
13
30
1.3
1.0
1.0
1.0
10
17
35
NORMACLAMP® - Hose Clamps
Torques
NORMACLAMP®GBS
Band width
Fracture torques (min.)
Recommended tightening torque
(mm)
W1
W2
W4
W5
18
15 Nm
15 Nm
15 Nm
15 Nm
8 Nm
20
25 Nm
20 Nm
20 Nm
20 Nm
10 Nm
25
35 Nm
30 Nm
30 Nm
30 Nm
20 Nm
30
50 Nm
45 Nm
45 Nm
45 Nm
25 Nm
NORMACLAMP®GBS QRC
Band width
Fracture torques (min.)
Recommended tightening torque
(mm)
W1
W2
18
10 Nm
10 Nm
6 Nm
20
15 Nm
15 Nm
8 Nm
25
25 Nm
25 Nm
18 Nm
30
40 Nm
40 Nm
22 Nm
Corrosion resistance
Material
Corrosion resistance in salt spray testing
W1
Min.
72 h
W2
Min.
72 h
W4
Min. 240 h
W5
Min.
400 h
Applications
The NORMACLAMP® GBS are specially suitable for use on com-
mercial and special vehicles:
• Sealing and retaining suction and pressure hoses with steel
or plastic reinforcements and high shore hardness.
The advantages at a glance
• Twofold improved failure torque
• Threefold improved band tensile forces
36
NORMACLAMP® - Hose Clamps
Survey of sizes, band widths & materials
NORMACLAMP® GBS
Band width
Clamping Range
Packaging
(mm)
Description
in mm
in Inches
PU
W1
W2
W4
W5
18
GBS M
17-19/18 SK*
17-19
1 1/16-3/4
50
X
X
X
X
18
GBS M
19-21/18 SK*
19-21
3/4-13/16
50
X
X
X
X
18
GBS M
21-23/18 SK*
21-23
13/16-7/8
50
X
X
X
X
18
GBS M 23-25/18 SK*
23-25
7/8-1
50
X
X
X
X
18
GBS M 25-27/18 SK
25-27
1-1 1/16
50
X
X
X
X
18
GBS M 27-29/18 SK
27-29
1 1/16-1 1/8
50
X
X
X
X
18
GBS M 29-31/18 SK
29-31
1 1/8-1 1/4
50
X
X
X
X
18
GBS M 31-34/18 SK
31-34
1 1/4-1 5/16
50
X
X
X
X
18
GBS M 34-37/18 SK
34-37
1 5/16-1 7/16
50
X
X
X
X
18
GBS M 37-40/18 SK
37-40
1 7/16-1 9/16
50
X
X
X
X
18
GBS M 40-43/18 SK
40-43
1 9/16-1 11/16
50
X
X
X
X
20
GBS M 43-47/20 SK
43-47
1 11/16-1 7/8
50
X
X
X
X
20
GBS M 47-51/20 SK
47-51
1 7/8-2
50
X
X
X
X
20
GBS M 51-55/20 SK
51-55
2-2 3/16
50
X
X
X
X
20
GBS M 55-59/20 SK
55-59
23/16-25/16
50
X
X
X
X
20
GBS M 59-63/20 SK
59-63
2 5/16-2 1/2
50
X
X
X
X
20
GBS M 63-68/20 SK
63-68
2 1/2-2 11/16
50
X
X
X
X
25
GBS M 68-73/25 SK
68-73
2 11/16-2 7/8
25
X
X
X
X
25
GBS M 73-79/25 SK
73-79
2 7/8-3 1/8
25
X
X
X
X
25
GBS M 79-85/25 SK
79-85
3 1/8-3 3/8
25
X
X
X
X
25
GBS M 85-91/25 SK
85-91
3 3/8-3 9/16
25
X
X
X
X
25
GBS M 91-97/25 SK
91-97
3 9/16-3 13/16
25
X
X
X
X
25
GBS M 97-104/25 SK
97-104
3 13/16-4 1/8
25
X
X
X
X
25
GBS M 104-112/25 SK
104-112
4 1/8-4 7/16
25
X
X
X
X
25
GBS M 112-121/25 SK
112-121
4 7/16-4 3/4
25
X
X
X
X
25
GBS M 121-130/25 SK
121-130
4 3/4-5 1/8
25
X
X
X
X
30
GBS M 130-140/30 SK
130-140
5 1/8-5 1/2
10
X
X
X
X
30
GBS M 140-150/30 SK
140-150
5 1/2-5 7/8
10
X
X
X
X
30
GBS M 150-162/30 SK
150-162
5 7/8-6 3/8
10
X
X
X
X
30
GBS M 162-174/30 SK
162-174
6 3/8-6 7/8
10
X
X
X
X
30
GBS M 174-187/30 SK
174-187
6 7/8-7 3/8
10
X
X
X
X
30
GBS M 187-200/30 SK
187-200
7 3/8-7 7/8
10
X
X
X
X
30
GBS M 200-213/30 SK
200-213
7 7/8-8 3/8
10
X
X
X
X
30
GBS M 213-226/30 SK
213-226
8 3/8-8 7/8
10
X
X
X
X
30
GBS M 226-239/30 SK
226-239
8 7/8-9 3/8
10
X
X
X
X
30
GBS M 239-252/30 SK
239-252
9 3/8-9 15/16
10
X
X
X
X
* These sizes are not mechanically locked but spot welded
PU = packaging unit
37
NORMACLAMP® - Hose Clamps
Survey of sizes, band widths & materials
NORMACLAMP® GBS 2-parts
Band width
Clamping Range
Packaging
(mm)
Description
in mm
in Inches
PU
W1
W2
W4
W5
18
GBS M 59-67/18 SK 2T
59-67
2 3/16-2 5/8
50
X
X
X
X
18
GBS M 67-75/18 SK 2T
67-75
2 5/8-2 15/16
50
X
X
X
X
20
GBS M 67-75/20 SK 2T
67-75
2 5/8-2 15/16
50
X
X
X
X
20
GBS M 75-83/20 SK 2T
75-83
2 15/16-3 1/4
50
X
X
X
X
20
GBS M 83-91/20 SK 2T
83-91
3 1/4-3 9/16
50
X
X
X
X
25
GBS M 88-100/25 SK 2T
88-100
3 3/8-4
25
X
X
X
X
25
GBS M 100-116/25 SK 2T
100-116
4-4 9/16
25
X
X
X
X
25
GBS M 116-136/25 SK 2T
116-136
4 9/16-5 3/8
25
X
X
X
X
25
GBS M 136-156/25 SK 2T
136-156
5 3/8-6 5/32
25
X
X
X
X
25
GBS M 156-180/25 SK 2T
156-180
6 5/32-7 3/32
25
X
X
X
X
30
GBS M 125-145/30 SK 2T
125-145
4 15/16-5 11/16
10
X
X
X
X
30
GBS M 145-168/30 SK 2T
145-168
5 11/16-6 5/8
10
X
X
X
X
30
GBS M 168-193/30 SK 2T
168-193
6 5/8-7 19/32
10
X
X
X
X
30
GBS M 193-220/30 SK 2T
193-220
7 19/32-8 21/32
10
X
X
X
X
30
GBS M 220-245/30 SK 2T
220-245
8 21/32-9 21/32
10
X
X
X
X
30
GBS M 245-270/30 SK 2T
245-270
9 21/32-10 3/5
10
X
X
X
X
30
GBS M 270-295/30 SK 2T
270-295
103/5-11 10/16
10
X
X
X
X
30
GBS M 295-320/30 SK 2T
295-320
1110/16-12 3/5
10
X
X
X
X
30
GBS M 320-345/30 SK 2T
320-345
123/5-13 7/12
10
X
X
X
X
PU = packaging unit
Enquiries/ordering:
When making enquiries or placing an order please indicate as follows:
1. Type
2. Clamping Range
3. Band width
4. Material
5. Parts
Example
GBS QR
43-47
20
W1
1-piece
38
