Heavy-Duty Slewing Rings for Marine Application
The Situation
A client approached QCB looking for a large-scale slewing bearing solution for a demanding marine application. Initially, they selected a bearing directly from a catalogue and requested a budget quotation based on their chosen specification.
However, after a detailed technical review months later, it became clear that the original selection was not suitable for the operational demands of the project. The application required far greater performance capability than the catalogue option could reliably deliver.
Complicating matters further, the project involved exceptionally large components — three 6-metre triple-row slewing rings, each weighing over 9 tonnes and destined for shipment to the EU. From engineering through to logistics, every stage of the project presented significant technical and operational challenges.
The Solution
QCB carried out a full engineering assessment of the application and designed a technically correct slewing ring solution tailored to the customer’s requirements.
Following detailed calculations, we provided a revised quotation based on the correct specification and performance demands. While the engineered solution fully met the application requirements, budget constraints ultimately prevented the client from proceeding with the ideal design.
After a full review of design & bearing life requirements, along with learning of all the financial & logistical constraints, NBC’s team were able to offer high performance products that also ticked every commercial box for the customer.
At the same time, QCB coordinated the final assembly, inspection, and preparation for international shipment of the three oversized bearings — a major logistical exercise given the dimensions and weight involved.
The Result
The project successfully delivered three massive triple-row slewing rings ready for marine transport to the EU.
By combining engineering expertise with practical commercial understanding, QCB ensured the customer received the best possible solution within their budget constraints while maintaining confidence in the product’s suitability for the application.
The project also demonstrated QCB’s capability to manage highly specialised, heavy-duty bearing solutions far beyond standard catalogue supply — including complex design validation, large-scale manufacturing coordination, inspection, and international freight preparation
QCB — We Don’t Just Do Small
From precision engineering to oversized heavy-duty solutions, QCB delivers practical bearing expertise for demanding industrial applications worldwide.
