Skip to content Our engineers often share knowledge about bearing applications, technologies, solutions and other related knowledge here, you can search for articles related to you to read.
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 bearing number, such as 6205 or 22220, while important suffixes like ZZ, 2RS, C3, P5, M, or NR are missing.
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 fit, performance, and reliable custom bearing reproduction.
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 ensure safe global delivery of bearings up to 14 meters in diameter.
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 direct and critical measure of wear progression. When clearance exceeds twice the design limit, maintenance is required; exceeding three times
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 checks, correct bolt preload, and systematic lubrication directly affect rotational accuracy, load performance, and service life. Written from an after-sales
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 × 0.375 = 26.25 or 70 × 0.45 = 31.5mm. In this case, a diameter of ø30 is suitable.
For
How to calculate crane bearing pressure: Use the formula 𝑝 =𝐹/𝐴, where 𝑝 is pressure, 𝐹 is the total applied load (radial, axial, and dynamic), and 𝐴 is the effective bearing contact area. For example, if the total load is 382.5 kN and the contact area is 28,000 mm², the
Food-grade bearings must meet strict standards to ensure safety in food equipment. They are typically made from stainless steel or ceramics, produced in clean environments, and lubricated with NSF H1-approved greases. Additional requirements include FDA or EU compliance, corrosion resistance, sealed protection against contaminants, and the ability to withstand extreme
Bearing letters and numbers are industry codes that define the product’s features.
RS/RZ: Plastic seals for moisture, dust, and corrosion protection.
ZZ/2Z: Steel shields for dust protection with low friction.
C0–C5: Internal clearance, with larger numbers for high-speed or high-temperature use.
P0–P2: Precision grades, with smaller numbers for higher accuracy.
The most commonly used water pump bearings include deep groove ball bearings, angular contact ball bearings, spherical roller bearings, and thrust bearings. Each type is suited for specific pump applications based on load, speed, and environmental conditions. Choosing the correct bearing requires evaluating sealing, working conditions, and cost-performance to ensure
* vkuken takes your privacy seriously. All information is used for technical and commercial communication only and will not be disclosed to third parties. If you are interested in more bearing technology, you can click on this article for reference.
Optimized by Seraphinite Accelerator
