In actual use, the rotating part of the turntable bearing usually does not need to be accurately positioned relative to the fixed part.1. Torque For large bearings, in most application environments, if the bearing is installed correctly and the standard internal clearance is used, the force used to overcome the friction or rotation resistance of the bearing is less than the force to overcome the inertia of the weight carried by the bearing. Two, slewing bearing application information 1. Generally, full-tooth high gears or involute gears with a pressure angle of 20 degrees can be provided, and the backlash meets the relevant regulations and the accuracy reaches the AGMAQ6. In order to achieve these effects, the turntable bearing is usually equipped with at least one grease injection attachment or lubrication hole. In order to facilitate assembly, the highest point of radial runout of the gear is marked. Only one side of each bearing ring is connected to the supporting structure. To this end, there are many methods available, such as analysis and testing to evaluate and verify that the supporting structure, fasteners, and joints have sufficient strength and can fully bear the maximum load and repetitive load that may occur. (Note: Welding the bearing directly or welding near the bearing will cause damage to the bearing) Figure 2 shows the typical hardening of four-point contact ball (RK, HS, HT, MT, KH and XT series) and cross roller (XR series) bearings. Of course, according to customer needs, we can also adjust the basic tooth profile, pressure angle and accuracy, and provide customized products. These conditions are caused by the change of load distribution, the deformation of the supporting structure and the bearing ring during the operation of the equipment.Identification code (10) The identification code includes the bearing model and serial number. Environment Rotary table bearings can be used indoors as well as outdoors under sunshine, rain and particle pollution. In addition, we can also provide ENDURAKOTE' coating, which can prevent corrosion and has stronger wear resistance, which is suitable for sliding contact surfaces. One or both rings have a complete transmission structure, such as gears or sprocket gears, so that the excellent characteristics of these transmission methods can be used to overcome the rotation resistance and make the inner and outer rings of the bearing rotate relatively. Inner ring and outer ring (1 and 2) The bearing consists of an inner ring and an outer ring, and the material is generally carburized steel. Certain application environments require high accuracy and rely on bearings to achieve it. (Note: The designer needs to confirm that the design is effective and is responsible for the selected fixing method. Usually, the axial load will compress the inner and outer ring supports of the bearing against each other. Rotary table bearings are generally used in occasions with low speed, discontinuous rotation and vibration. Installation and layout The common way to fix the slewing bearing is to fix the ring with evenly distributed bolts. Mounting hole The ideal mounting hole pattern for the two rings of the fixed turntable bearing should be a through hole evenly distributed around one circle. These parameters are used to check the size and load-carrying capacity of the bearings and the included gears. Usually balls or rollers are made of hard chrome alloy. Although the turntable bearing has the ability to handle all types of combined loads, its main function is to withstand axial loads. The seal is made of elastic material and does not conflict with most common mineral oil lubricants and lithium-based or calcium-based thickener greases. Mechanical ball bearings In this way, all components under load can control the stress level in a lower range. Bearings need to have a minimum clearance to minimize defects in installation. The off-center axial load will also give rise to torque. Other factors that affect bearing friction include contact angle, spacers, seals and lubricants. The precision-made rolling elements make the relative rotation and load transmission performance between the inner and outer rings better. Spacer (4) Spacers separate the rolling elements, which can reduce friction and prevent slippage and seizure during the rotation of the bearing. However, TR series bearings are not filled with hole plugs, it needs to separate a bearing ring in order to install the rolling elements. In this catalog, there are many series of this form. The applicable temperature range is -40°F to +140°F (-40°C to +60°C).
