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Rolling bearing classification
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1) Radial bearing----first for rolling bearings with radial load; its nominal touch angle is from 0 to 45. It is different according to the nominal touch angle; it is divided into: radial touch bearing----nominal touch Radial bearing with angle 0: centripetal angle touch bearing----central bearing with nominal touch angle greater than 0 to 45.
2) Thrust bearing----first for rolling bearings that accept axial load; its nominal touch angle is greater than 45 to 90. According to the nominal touch angle, it is divided into: Axial touch bearing----Nominal touch angle is Thrust bearing of 90: thrust angle touch bearing----the thrust bearing with a nominal touch angle greater than 45 but less than 90.
(2) Bearings according to the type of their roll; divided into:
1) Ball bearing----roller is ball:
2) Roller bearing----roller is roller. Roller bearing is made of roller; it is divided into: Cylindrical roller bearing----roller is the bearing of cylindrical roller; the length of cylindrical roller The ratio of the diameter is less than or equal to 3, the needle bearing----roller is the needle bearing; the ratio of the length to the diameter of the needle is greater than 3; but the diameter is less than or equal to 5mm; tapered roller bearing----rolling The body is a tapered roller bearing; the spherical roller bearing one by one rolling body is a spherical roller bearing.
(3) Bearings can be adjusted according to their operation, and are divided into:
1) Self-aligning bearing----the raceway is a spherical shape, which can be used to the angular error and angular movement between the two raceways.
2) Non-aligning bearings (rigid bearings)----bearings that can offset the axial angle between the raceways.
(4) Bearings are divided into:
1) Single row bearings----bearings with one row of rolling bodies;
2) Double row bearings----bearings with two rows of rolling bodies;
3) Multi-row bearings----bearings with more than two rows of rolling elements, such as three-row and four-row bearings.
(5) Bearings can be separated according to their components, divided into:
1) Can be separated from the bearing----with bearings that can be separated from the parts,
2) Do not leave the bearing ---- After the bearing is matched at the end, the ferrule can not be free from the bearing.
(6) Bearings can be divided into various layout types according to their layout shape (if there is no filling groove, whether there are inner and outer rings and the shape of the ferrule, the layout of the ribs, or even the cage).
2. According to the scale of the rolling bearing, the bearing is classified according to its outer diameter scale.
(1) Miniature bearings----bearings with a nominal outer diameter scale of 26 mm or less;
(2) Small bearings----bearings with a nominal outer diameter scale of 28-55mm;
(3) Small and medium-sized bearings----bearings with a nominal outer diameter scale of 60-115mm;
(4) Medium and large-sized bearings----bearings with a nominal outer diameter scale of 120-190mm (5) Large bearings----bearings with a nominal outer diameter scale of 200-430mm;
(6) Extra large bearings----bearings with a nominal outer diameter scale of 440mm or more.
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