Checking the Agitator Shaft Run-out

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	CAUTION
Never work inside vessels without supervision

● Provide access to the drive (e.g. coupling or fan wheel) so that the the agitator can be rotated by hand

● Apply a dial-indicator to the end of the agitator shaft

● Fully rotate the agitator shaft by hand (e.g. by turning the fan wheel)

● Measure the total indicated run-out X, read the length of the agitator shaft from the specification (→ chapter 1)

The total indicated X_maxrun-out shall comply with the following condition: X_max/Y ≤ ²/₁₀₀₀ i.e. per meter shaft length the total indicated run-out shall not exceed 2 mm (1/12") in other words: the deviation from the imaginary center line of an absolute true shaft shall not exceed 1 mm (1/24") per meter shaft length For rubberlined shafts: ♦ If possible, carry out the measurement on a turned surface, e.g. on the cap nut. When the measurement is being taken right on the rubberlined shaft the run-out limit may be increased by 3 mm in order to compensate the unevenness of the rubberlining, particularly at the seam. When the run-out exceeds the permissible value and there is a flanged coupling between the bearing shaft and the agitator shaft: ♦ Check that there are no foreign bodies between the coupling flange halves If the total indicated run out stills exceeds the permitted value or the agitator comes without a flanged coupling but with a threaded coupling or integrated bearing agitator shaft instead: ♦ Contact the EKATO Service department (either the bearing shaft or the agitator shaft resp. the bearing agitator shaft suffered bending during transport or a flange was damaged and must be trued)

Start-up

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