Linear unit surpasses required service life by more than Factor 2

Test parameters:

stroke: 315 mm

load: 250 N (radial, centric)

Speed: 0.22 m/ sec.

pause time: 1 sec.

spindle: steep thread, 10 x 25 mm

lead screw nut: SWZ-W-3008 (length 30 mm)

Test result:

Number of cycles achieved until cancellation: 544,000 cycles

Axial play after test: approx. 0.6 mm

Torque after test: 0.8 Nm

The linear unit was still in operation at the time the test was cancelled.

Conclusion:
The tested linear unit exceeded the required service life by more than a factor of 2. 544,000 cycles were achieved instead of the required 200,000 cycles, or the test was cancelled.