Slewing bearing rolling element
The rolling elements of the slewing ring are made of anti-friction bearing steel. Such materials will be produced according to the company’s standard regulations, and through strict chemical composition analysis of the materials, relevant reports will be printed out. In order to ensure the same quality, the production standard batches will be strictly monitored during the licensing process. LDB slewing bearing rolling body is regularly audited and inspected to ensure the high quality pass rate of the product.
Slewing Ring Washer/Cage
The gaskets and cages of the slewing bearing are mostly made of polyamide. Such a cage can maintain the equidistant rotation of each rolling element during the rotation of the rolling elements, preventing the rolling elements from running safely and reliably. Polyamide gasket cages produced by LDB slewing bearings are of consistently high quality. In certain bearings, metal spacers and cages are also used.
Slewing ring raceway
For the slewing bearing raceway of rolling elements, LDB relies on precise machining and unique engineering principles to keep the rolling elements stable in motion.
Manufacturing process of LDB slewing bearing raceway – car pin
The runway after turning is quenched on a re-quenching machine to increase the hardness of the runway, and the slewing bearing runway after quenching is polished to a certain smoothness.
Slewing Ring Seals
When designing the raceway system of LDB’s large slewing bearing, lip seal kits are designed on both the upper and lower sides. These seals have two main functions: 1. Prevent dust, moisture and other particles from entering the bearing and cause wear and damage; 2. The seals separate the raceway and the bearing ring.
Slewing ring seals are available in a variety of materials and types. The type and material of the seal depends on the shape of the bearing and the surrounding service environment. The slewing bearing of mechanical engineering adopts a simple lip design, which has a better sealing effect. In special circumstances, however, different groove designs are used. The slewing bearing working in a particle-rich environment, with a simple design, is ineffective, and it is easy for grease to flow out of the seal, affecting the slewing bearing operation, and there will be a certain degree of wear. For example, working in ultraviolet and high oxygen content environments will be affected. Therefore, the seals of LDB slewing bearings will be made of different materials according to customer needs, and it is recommended to use specially designed seals, and during the installation process, the seals should be filled with grease.
Slewing Bearing Gear Drive
LDB slewing bearings can have two types of internal gears and external gears, both of which are spur gear operation modes. As well as special gear structures, helical gears and turbine gears, toothless slewing bearings can also be produced according to customer requirements.
For the most part, the teeth are in their natural state, as are the rings themselves. The strength characteristics of the gear teeth are the strength characteristics of the base metal. If the application requires additional strength and wear resistance, the gear teeth are induction hardened. Hardening of the teeth will increase the wear and strength properties to the desired level. Depending on the pitch diameter and module of the gear, the teeth are induction hardened or rotationally hardened. To avoid metallurgical gaps with unhardened material in the transition zone, the teeth are hardened primarily at the root of each tooth. In addition to improving the load-carrying capacity of the tooth surface, it also increases the strength at the tooth root. Tooth spacing hardened hardened microsections.