Large slewing bearing rings for a construction machinery leader

Customer profile: a leading domestic crawler crane and construction machinery manufacturer with a nationwide service network.

Challenge: the customer needed large slewing bearing rings and matching gear ring forgings capable of sustaining heavy loads and high-impact working conditions over a long service life.

Our solution

We supplied the rings in 42CrMo alloy steel through a complete process chain: open-die and ring rolling forging, quenching and tempering, and precision machining. Each part was verified for mechanical properties and internal soundness before shipment.

Result

Customer feedback indicates excellent dimensional stability and a high pass rate in internal flaw detection, effectively reducing the scrap rate during subsequent machining. The successful batch delivery has led to follow-up orders for wind power and mining machinery applications.