After a rebuild, a speed increase or a capacity upgrade, the original standard bearing often no longer matches the new load state. ZBZ custom engineering starts from your operating data and redesigns a bearing solution that fits your machine exactly.
After a speed increase, a capacity upgrade or a roll-stack rebuild, actual loads already exceed the original design envelope. Keeping the old designation guarantees repeat failures — the bearing has to be recalculated and redesigned to the new load spectrum.
On retrofit sites the housing often cannot be modified. Load capacity then has to be raised through internal geometry, material and process, while the envelope dimensions stay fixed.
Under combined high temperature, heavy shock, heavy contamination and low-speed heavy load, a conventional design often delivers only a fraction of the target life.
Some very large or dedicated designs depend on imports, with heavy lead-time and cost pressure. ZBZ can deliver a localised replacement with improved performance, based on reverse engineering and duty-cycle analysis.
Customisation is not simply a change of size — it is a reconfiguration of the entire technical solution.
Number of rows, roller count and profile, contact angle and internal geometry ratios, optimised to the load spectrum.
Very large sizes, special geometries, split designs, flanges or oil grooves and oil holes — tailored to the available space.
Vacuum-degassed bearing steel, electroslag-remelted (ESR) steel, carburising steel and special alloys, selected for load and temperature.
Bainitic austempering, martensitic quenching, stabilising tempering and high-temperature stabilising treatment.
Operating clearance or preload determined from temperature, interference fit, contamination and stiffness requirements.
Labyrinth seals, multi-lip contact seals, flinger rings and positive-pressure air seals, combined to the contamination level.
Grease grade and fill quantity, circulating oil passages, solid lubricants or self-lubricating materials.
Surface strengthening, phosphating and special coatings to raise wear, corrosion and adhesion resistance.
Flaw detection (NDT), accuracy and performance inspection to your specifications or international standards, with a complete inspection report.
Capture load, speed, temperature, contamination, lubrication and mounting dimensions
Rating life calculation with lubrication / contamination / temperature factors, and a defined improvement target
System design of structure, material, heat treatment, clearance, sealing and lubrication
Drawings and tolerance fit recommendations issued, confirmed jointly with your engineering department
Prototype manufacture + NDT + rig testing or simulated-duty testing
Series production, full outgoing inspection, installation guidance and in-service follow-up
Proposal, life calculation report, complete drawing package, inspection report, installation and lubrication procedure documents.
Preliminary proposal within 72 hours of receiving complete duty parameters; production scheduled to the agreed cycle after drawing approval.
Customer drawings, duty data and technical solutions are treated as strictly confidential; an NDA can be signed.
The more complete the information, the more accurate the proposal. For anything missing, we can support on-site data capture or reverse engineering.
Send us photographs of the failed bearing and your duty parameters, and you will have an actionable improvement proposal within 72 hours.
