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Detailed performance data for the switchable magnetic clamp TMC 300
Values shown for the performance of the TMC 300 are based on measurements made on material S235 JR,
comparable to AISI 1020 Cold Rolled Steel, for the maximum, vertical breakaway force at 0° deviation from the
load axis and additionally under a 90° inclined load. These values do not include any safety factor. The magnetic
clamp will detach itself abruptly when the load exceeds values given in table 2.
Table 2
Thickness of
material
mm
2
3
4
5
>6
Thickness of
material
Inches
0.08
0.12
0.16
0.20
>0.25
During each application, watch for any deformation of the work piece that might occur. If an air gap forms between
the magnetic surface and the work piece, the magnetic clamp will not reach the stated holding force and could
detach itself. Please check for any air gap developing at the edges of the TiN-coated magnetic surface if necessary
(e.g. with a sheet of paper; 80g/m
Immediately stop the operation if there is any excessive deformation of the work piece or if an
air gap occurs.
Never exceed the dimensions and/or the load-bearing capacity of the material thickness given
In table 2.
Breakaway force in kg
Clean, flat, ground
surface
Air gap <0.1 mm
0°
90°
90
30
150
50
240
80
285
95
300
100
Breakaway force in lbs
Clean, flat, ground
surface
Air gap <0.004 inches
0°
90°
198
66
330
110
540
180
630
210
660
220
2
).
Rusty, slightly
scratched surface
Air gap = 0.25 mm
0°
90°
75
25
120
40
180
60
210
70
210
70
Rusty, slightly
scratched surface
Air gap = 0.01 inches
0°
90°
165
55
270
90
390
130
465
155
465
155
Irregular, rusty or
rough surface
Air gap = 0.5 mm
0°
90°
66
22
105
35
135
45
150
50
150
50
Irregular, rusty or
rough surface
Air gap = 0.02 inches
0°
90°
150
50
225
75
300
100
330
110
330
110
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