NKMZ and General Electric: cooperation continues

In November, NKMZ finished the contract for the supply of complete rotor shafts for the Garret oil field project of General Electric. NKMZ specialists have manufactured and supplied three rotors weighing 15 tons each.

NKMZ started working with GE Oil&Gas division of General Electric in 2013. Then the Ukrainian company was certified as a supplier of parts with a full cycle of finishing machining for GE Oil&Gas – a global manufacturer of generators and electric motors for pumping gas and oil. During the period of cooperation, NKMZ has manufactured more than 3 thousand tons of parts for GE Oil&Gas.

Rotor shaft is a crucial part, to which very high requirements are imposed on the accuracy of machining – the total mechanical run-out, reflecting all the geometry errors, should not exceed 9 microns. Manufacture of these products feature a special technique for monitoring the run-out and geometry errors of the bearing journals of the shaft by several sensors and in different planes, which had not been used until that time when testing similar parts. To carry out this type of monitoring, NKMZ purchased sensors, equipment and software from the world’s leading manufacturers – TESA (Switzerland) and Bently Nevada (USA). NKMZ specialists have also developed and manufactured the corresponding equipment.

In addition, before launching rotor shafts into production, NKMZ specialists developed an individual plan of the production process, which was considered and approved by representatives of General Electric. Manufacturing monitoring and final acceptance of these products have been carried out by inspectors from GE Power Conversion and Bureau Veritas.

Continuing further cooperation with General Electric, Novokramatorsky Mashinostroitelny Zavod is currently manufacturing shafts weighing from 7 to 47 tons for this company. Their shipment to the customer is expected in December 2021.

Press-relations service of NKMZ