1. According to the type of rolling bearing structure classification (1) Bearing according to its load direction or nominal contact angle can be divided into: 1) Radial Bearings ---- mainly for radial load bearing, the nominal contact angle From 0 to 45. According to the nominal contact angle is different, is divided into: Radial contact bearings ---- Nominal contact angle of 0 radial bearings: Radial contact bearings ---- Nominal contact angle greater than 0 to 45 radial bearings. 2) Thrust Bearings ---- mainly used to bear axial load rolling bearings, the nominal contact angle greater than 45 to 90. According to the different nominal contact angle is divided into: Axial contact bearings ---- Nominal contact angle of 90 thrust bearings: Thrust angular contact bearings ---- Nominal contact angle greater than 45 but less than 90 thrust bearings. (2) Bearing according to the type of rolling body, is divided into: 1) ball bearings ---- rolling ball: 2) roller bearing ---- rolling body roller. Roller bearings by roller type, is divided into: Cylindrical Roller Bearings ---- Rolling cylindrical roller bearings, cylindrical roller length to diameter ratio of less than or equal to 3; needle roller bearings ---- Rolling needle roller bearings, needle roller length to diameter ratio of more than 3, but the diameter is less than or equal to 5mm; Tapered roller bearings ---- Roller is tapered roller bearings; Spherical roller bearings one by one Rolling elements are spherical roller bearings. (3) Whether the bearings can be self-aligning according to their work can be divided into: 1) Self-aligning bearings ---- Ball bearings are spherical-shaped and can accommodate the angular deviation and angular movement between the two raceway axes; 2) non-self-aligning bearings (rigid bearings) ---- can offset the axial offset between the raceway bearings. (4) The number of rolling bearings according to the number of columns, divided into: 1) Single row bearings ---- Bearings with a row of rolling elements; 2) Double row bearings ---- Bearings with two rows of rolling elements; 3) Bearings ---- Bearings with more than two rows of rolling elements, such as three-row, four-row bearings. (5) Whether the bearings can be separated according to their components is divided into: 1) separable bearings ---- bearings with detachable parts; 2) bearings that can not be separated ---- the bearing rings can not be arbitrarily set after the final matching Freely separated bearings. (6) The structure of the bearing according to its structure (such as whether the filling groove, with or without inner and outer rings and the shape of the ring, the ribs of the structure, and even without cage, etc.) can also be divided into a variety of structural types. 2. According to the size of the rolling bearing bearings according to their size size, divided into: (1) miniature bearing nominal diameter size range of 26mm below the bearing; (2) small bearings ---- Nominal diameter size range of 28 -55mm bearing; (3) small and medium-sized bearings ---- Nominal diameter size range of 60-115mm bearings; (4) medium and large bearings ---- Nominal diameter size range of 120-190mm bearings ) Large bearings ---- Nominal diameter size range of 200-430mm bearings; (6) Extra large bearings ---- Nominal diameter range of 440-2000mm bearings. (7) Heavy-duty bearings ---- Nominal diameter size range of more than 2000mm bearings.
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Ningbo Xinda Elevator Traction Technology Co., Ltd. , https://www.xinda-elevator.com