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There is no fixed import tariff on bearings from China. Import duties vary depending on the bearing’s HS code, the destination country, the product’s country of origin, and current customs
Ultrasonic testing is essential for slewing bearings because it can detect hidden internal defects that visual inspection and dimensional measurement cannot reveal. Using high-frequency sound waves, ultrasonic inspection helps identify
Every week, I receive bearing inquiries from customers around the world. One of the most common problems is that the bearing model is incomplete. Customers often provide only the basic
When customers lack bearing drawings, accurate reverse engineering depends on three core measurements: overall dimensions, mounting hole chord lengths, and gear parameters. Precise on-site measurement by professional engineers ensures correct
We solve the transportation challenges of ultra-large slewing bearings through customized packaging, container optimization, heavy-lift vessels, controlled road transport, and destination-oriented design. From standard containers to heavy-lift ships, our solutions
Quantitative evaluation of slewing bearing wear should focus on four core rotational accuracy indicators: bearing clearance, axial runout, radial runout, and gear runout. Among them, bearing clearance is the most
This article provides a practical, engineering-focused guide to the installation, bolt tightening, lubrication, and maintenance of slewing rings used in port portal cranes. It explains how mounting base preparation, pre-installation
Based on proportional calculations, the steel balls in slewing bearings are generally taken as height H × 0.375 or 0.45. If the bearing ring height is 70mm, then 70 ×
