Xforce Load Cells
Exact axial alignment of the test axis of the materials testing system is a basic requirement for determining accurate characteristic values.
Alignment must be performed very carefully, particularly when testing brittle materials such as fiber composites or certain metals.
Function description
The alignment fixture is used to accurately compensate for angular and offset errors in the test arrangement.
The alignment fixture is an alignment element and is mounted directly on the testing system’s base crosshead. The adjustment screws are used first to adjust the angular error and then the axial offset. The screw configuration for making adjustments in the X and Y direction makes it possible to correct errors in their respective working direction. The alignment can take place in the loading state.
Alignment measurement
Precise guidelines regarding maximum permissible transverse loads are established in the respective application standards.
To verify machine accuracy, adjustment must take place in a loaded state using optionally available strain-gauged alignment specimens, measurement amplifiers, and ZwickRoell testXpert III testing software. The calculation routines comply with ASTM E1012.
Purely mechanical adjustment in an unloaded state can be performed via the mounting studs or via a divided specimen clamped in the specimen grips.
Item No. |
058005 |
058006 |
068902 |
|
---|---|---|---|---|
Test load Fmax |
50 |
250 |
250 |
kN |
In conjunction with |
AllroundLine and symmetrical specimen grips |
AllroundLine and symmetrical specimen grips |
AllroundLine and symmetrical specimen grips |
|
Load types (symmetric force application) |
Tensile/compression/alternating load (static) |
Tensile/compression/alternating load (static) |
Tensile/compression/alternating load (static) |
|
Permissible bending moment on the mounting stud/flange, max. |
1 |
7.5 |
30 |
kNm |
Offset correction (X/Y) |
± 3 |
±3 |
±3 |
mm |
Attainable accuracy with offset correction |
± 0.01 |
±0.01 |
±0.01 |
|
Angle correction |
± 1 |
±0.7 |
±0.35 |
° |
Attainable accuracy with angle correction |
± 0.006 |
±0.004 |
±0.002 |
° |
Attachment |
Stud Ø 36 |
Stud Ø 60 |
Flange connection |
mm |
Centering gauge |
- |
- |
Ø 70 |
mm |
Pitch circle |
- |
- |
Ø 220 (8 x M16) |
mm |
Connection |
||||
Centering gauge |
Ø 70 |
Ø 70 |
Ø 70 |
mm |
Pitch circle |
Ø 115 (8 x M8) |
Ø 220 (8 x M16) |
Ø 220 (8 x M16)[1] |
mm |
Ø 264 (8 x M16) |
||||
Dimensions |
||||
Height |
152 |
211 |
145 |
mm |
Installation space height |
111 |
138 |
142 |
mm |
Diameter |
180 |
250 |
290 |
mm |
Weight, approx. |
14 |
34 |
49 |
kg |
Ambient temperature |
+10 ... +35 |
+10 ... +35 |
+10 ... +35 |
°C |