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Historical data has shown that most electric motor failures are as a result of a mechanical failure (instead of an electrical failure). Frequently these failures result in damage to the bearing journals and shaft extension. In order to correct this it is necessary for the journal to be built up by means of micro welding, then worked down to the correct size and polished.
Marthinusen and Coutts has the ability to do this in-house. Our dedicated micro welding lathe can comfortably accommodate shafts of up to 4 metres and with an outside diameter of 1400 millimetres. The pictures hereunder show the micro welding process.
Two horizontal boring mills enable repairs like in-house concentricity checks to be undertaken, thereby saving you time and resources. This translates into a quicker turn-around time while ensuring high quality. The large boring mill has a bed capacity of 20 tonnes.
Since most mechanical repairs to electric motors require the use of a lathe, our machine shop is equipped with no less than seven lathes. The largest lathe can accommodate a work piece of up to 3700 millimetres long and up to 800 millimetres in diameter.
Experience says that your motor repair can be delayed because of something as simple as the drilling of a couple of holes. M&C’s machine shop is equipped with a radial arm drill to cater for every eventuality in this regard
Your assets consist of all types of machines, the majority of which can be repaired by M&C. For example, two milling machines ensure that shaped rotor bars can be milled to virtually any shape or size. Consequently, you will not have to wait the six to eight weeks commonly required to extrude these items.
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