Besides wrapping the rotor in canvas, what is the proper technique to protect the rotor of a wound rotor motor being disassembled for maintenance or overhaul?
⢠Mechanical strength of motor components ā which part is designed to carry weight and bending loads: the shaft, or the windings/core? ⢠Protection of windings ā what types of damage can occur if windings or laminations are used as bearing surfaces or lifting points? ⢠Safe storage/rigging practices for heavy rotating machinery during maintenance
⢠Look at each option and ask: which parts of the rotor are most vulnerable to mechanical damage (nicks, distortion, out-of-round) and should not be used to support or lift it? ⢠Think about long-term storage: which method minimizes the risk of the rotor deforming, tipping over, or having its windings rubbed or crushed? ⢠Consider standard shop practice: when a shafted component is removed (like a pump rotor or motor rotor), what surfaces are normally placed on blocks or slung with rigging?
⢠Verify which part of the rotor is structurally designed to carry its own weight during operation and handling (typically the shaft). ⢠Check which options would put direct pressure or load on the windings and core, increasing risk of damage ā these are likely poor practices. ⢠Confirm that the chosen technique provides a stable, secure support that prevents tipping, bending of the shaft, or contact damage to the windings.
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