Hypertherm XPR460 - Measure the Pit Depth of an Electrode

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In general, if the electrode pit depth exceeds the guidelines in the following table, replace the
electrode and nozzle.
Electrode
amperage
Replacement pit depth
1
Description
< 130 A ≥ 1 mm (0.04 in) In general, for electrodes less than 130 A, replace the electrode when the pit
depth is 1 mm (0.04 in) or greater.
≥ 130 A and
< 220 A
≥ 1.25 mm (0.05 in) In general, for electrodes greater than or equal to 130 A and less than 220 A,
replace the electrode when the pit depth is 1.25 mm (0.05 in) or greater.
≥ 220 A ≥ 1.5 mm (0.06 in) In general, for electrodes greater than or equal to 220 A, replace the electrode
when the pit depth is 1.5 mm (0.06 in) or greater.
1 Based on your cut-quality requirements, it can be necessary to replace your electrode at a pit depth that is shallower or deeper than these
guidelines.
Measure the pit depth of an electrode
The pit depth of an electrode refers to the depth of the wear on the hafnium emitter found in the center of
the electrode
Before you begin:
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Remove the power from the cutting system on page 249
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Remove the torch and consumable parts on page 143
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Use an electrode pit-depth gauge to measure the pit depth on the electrode.
A pit-depth gauge is available from Hypertherm. Refer to Other consumable and torch parts on page
422.
1 Electrode pit
2 Pit-depth gauge
Maintenance
7
261811530Instruction ManualXPR460