Bearing Knowledge - LDB https://www.ldb-bearing.com Mon, 12 Oct 2026 08:19:29 +0000 en-US hourly 1 https://wordpress.org/?v=6.4.13 Internal vs. External Geared Slewing Bearings: Gear Tooth Failure Modes and Induction Hardening Best Practices https://www.ldb-bearing.com/ldb-bearing-knowledge/internal-vs-external-geared-slewing-bearings-gear-tooth-failure-modes-and-induction-hardening-best-practices.html Wed, 14 Oct 2026 00:19:00 +0000 https://www.ldb-bearing.com/?p=7522 Slewing bearings with integrated gear teeth—whether internal or external—are fundamental driving components in modern heavy machinery. By combining load-bearing rotation with high-torque gear transmission in a single compact assembly, geared slewing rings power everything from hydraulic excavators and mobile cranes to wind turbines and slew drives. However, transmitting high torque under heavy, alternating shock loads […]

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]]> Lubrication Management for Slewing Bearings: How Extreme Operating Temperatures Dictate Grease Selection https://www.ldb-bearing.com/ldb-bearing-knowledge/lubrication-management-for-slewing-bearings-how-extreme-operating-temperatures-dictate-grease-selection.html Mon, 12 Oct 2026 07:59:54 +0000 https://www.ldb-bearing.com/?p=7516 Slewing bearings are the critical backbone of heavy machinery, supporting massive axial, radial, and tilting moment loads while enabling smooth 360-degree rotation. From towering construction cranes and port machinery to automated solar trackers and cold-climate forestry equipment, these large-diameter bearings operate under diverse environmental conditions. Among all environmental factors, operating temperature is one of the […]

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]]> Slewing Bearings for Dusty and Abrasive Environments: Mining, Quarrying, and Cement Plants https://www.ldb-bearing.com/ldb-bearing-knowledge/slewing-bearings-for-dusty-and-abrasive-environments-mining-quarrying-and-cement-plants.html Fri, 09 Oct 2026 00:59:00 +0000 https://www.ldb-bearing.com/?p=7513 What Is a Slewing Bearing? A slewing bearing is a large rotating component that supports heavy loads while enabling rotation between two structures. It handles axial loads, radial loads, and tilting moments simultaneously. These bearings are essential in cranes, excavators, wind turbines, and other heavy machinery. In mining, quarrying, and cement plants, slewing bearings operate […]

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]]> Grease Selection for Slewing Bearings: A Practical Guide to Base Oil, Thickener, and Additives https://www.ldb-bearing.com/ldb-bearing-knowledge/grease-selection-for-slewing-bearings-a-practical-guide-to-base-oil-thickener-and-additives.html Fri, 09 Oct 2026 00:47:00 +0000 https://www.ldb-bearing.com/?p=7509 What Is a Slewing Bearing? A slewing bearing is a large rotating component that supports heavy loads while enabling rotation between two structures. It handles axial loads, radial loads, and tilting moments simultaneously. These bearings are essential in cranes, excavators, wind turbines, solar trackers, and other heavy machinery. They operate at very low rotational speeds, […]

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]]> Gear Tooth Damage in Slewing Bearings: Causes, Detection, and Prevention https://www.ldb-bearing.com/ldb-bearing-knowledge/gear-tooth-damage-in-slewing-bearings-causes-detection-and-prevention.html Thu, 08 Oct 2026 03:31:11 +0000 https://www.ldb-bearing.com/?p=7505 What Is a Slewing Bearing? A slewing bearing is a large rotating component that supports heavy loads while enabling rotation between two structures. It handles axial loads, radial loads, and tilting moments simultaneously. These bearings are essential in cranes, excavators, wind turbines, and other heavy machinery. Many slewing bearings include integral gear teeth—either internal or […]

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]]> How to Use Acceptance Curves for Slewing Bearing Selection: A Practical Engineering Guide https://www.ldb-bearing.com/ldb-bearing-knowledge/how-to-use-acceptance-curves-for-slewing-bearing-selection-a-practical-engineering-guide.html Wed, 30 Sep 2026 00:56:00 +0000 https://www.ldb-bearing.com/?p=7501 What Is a Slewing Bearing? A slewing bearing is a large rotating component that supports heavy loads while enabling rotation between two structures. It handles axial loads, radial loads, and tilting moments simultaneously. These bearings are essential in cranes, excavators, wind turbines, tunnel boring machines, and other heavy machinery. The defining characteristic of a slewing […]

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]]> Slewing Bearings in Amusement Rides: Safety-Critical Requirements for Ferris Wheels and Carousels https://www.ldb-bearing.com/ldb-bearing-knowledge/slewing-bearings-in-amusement-rides-safety-critical-requirements-for-ferris-wheels-and-carousels.html Tue, 29 Sep 2026 00:39:00 +0000 https://www.ldb-bearing.com/?p=7497 What Is a Slewing Bearing? A slewing bearing is a large rotating component that supports heavy loads while enabling rotation between two structures. It handles axial loads, radial loads, and tilting moments simultaneously. These bearings are essential in cranes, excavators, wind turbines, and other heavy machinery. In amusement rides, slewing bearings serve a different purpose. […]

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]]> Corrosion-Resistant Slewing Bearings for Water Treatment and Chemical Plants https://www.ldb-bearing.com/ldb-bearing-knowledge/corrosion-resistant-slewing-bearings-for-water-treatment-and-chemical-plants.html Mon, 28 Sep 2026 02:27:32 +0000 https://www.ldb-bearing.com/?p=7493 What Is a Slewing Bearing? A slewing bearing is a large rotating component that supports heavy loads while enabling rotation between two structures. It handles axial loads, radial loads, and tilting moments simultaneously. These bearings are essential in cranes, excavators, wind turbines, and other heavy machinery. In water treatment and chemical plants, slewing bearings appear […]

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]]> 50Mn vs. 42CrMo4: Choosing the Right Material and Heat Treatment for Slewing Bearings https://www.ldb-bearing.com/ldb-bearing-knowledge/50mn-vs-42crmo4-choosing-the-right-material-and-heat-treatment-for-slewing-bearings.html Thu, 24 Sep 2026 01:03:00 +0000 https://www.ldb-bearing.com/?p=7489 In the heavy machinery industry, replacing a failed slewing bearing is a logistical nightmare. The direct cost of the bearing is often dwarfed by the astronomical expenses of equipment downtime, crane mobilization, and intensive labor required to dismantle the machine. Therefore, the lifespan and load-bearing capacity of a slewing bearing must be guaranteed from the […]

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]]> Demystifying Tilting Moments in Crane Slewing Bearings: A Comprehensive Guide https://www.ldb-bearing.com/ldb-bearing-knowledge/demystifying-tilting-moments-in-crane-slewing-bearings-a-comprehensive-guide.html Wed, 23 Sep 2026 01:03:00 +0000 https://www.ldb-bearing.com/?p=7486 For engineers designing or maintaining cranes, the slewing bearing is arguably the most critical structural component. It acts as the sole connection between the rotating upper structure and the stationary undercarriage. While these bearings must support the immense downward axial force of the machine’s weight, the true test of a crane slewing bearing lies in […]

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