This type of bearing is divided into single-row, double-row, and four-row miniature tapered roller bearings according to the number of rollers installed. Single-row roller bearings can accept radial loads and axial loads in one direction. When the bearing receives a radial load, an axial force component will occur, so when another bearing that can accept the axial force in the opposite direction is required to be balanced.
Structure of miniature tapered roller bearings:
The type code of miniature tapered roller bearings is 30,000, and the roller bearings are separable. In general, especially between the outer ring and the inner component of the tapered roller bearing within the range of dimensions covered by GB / T307.1-94 "Rolling Bearing Radial Bearing Service," it can be exchanged 100% universally.
The viewpoint of the outer ring and the diameter dimension of the outer raceway have been standardized as the same as the external dimensions. Changes are not allowed during planning production so that the outer ring and the inner component of the tapered roller bearing can also be universally exchanged internationally.
Structure of miniature tapered roller bearings:
The type code of miniature tapered roller bearings is 30,000, and tapered roller bearings are separable bearings. In general, especially between the outer ring and the inner component of the tapered roller bearing within the range of dimensions covered by GB / T307.1-94 "Rolling Bearing Radial Bearing Service," it can be exchanged 100% universally.
The viewpoint of the outer ring and the diameter dimension of the outer raceway have been standardized as the same as the external dimensions. Changes are not allowed during planning production so that the outer ring and the inner components of the tapered roller bearings can be universally exchanged internationally.
Miniature roller bearings are mainly used to receive the combined radial and axial loads, primarily radial loads. Compared with angular touch ball bearings, the bearing capacity is large, and the limit speed is low. Tapered roller bearings can accept axial load in one direction and can constrain axial displacement in one direction of the shaft or housing.
Device for miniature tapered roller bearings:
Adjusting the axial clearance of the roller bearing device can be adjusted by using the adjustment nut on the journal, adjusting the washer and the thread in the bearing seat hole, or by pre-tensioning the spring. The sizes of the axial clearance is related to the placement of the bearing device, the interval between the bearings, the data of the shaft, and the bearing seat, and it can be determined according to the working conditions.
For tapered roller bearings with high load and high speed, it is necessary to consider the effect of temperature rise on the axial clearance when adjusting the permission, and budget for amount of clearance reduction caused by temperature rise, that is, the axial travel The gap should be adjusted appropriately to be more significant.
For bearings with low speed and vibration, a clearance-free device or a preload device should be used. The intention is to make the rollers and raceways of miniature roller bearings have outstanding touch, and the load is evenly distributed to avoid the rollers and raceways being damaged by oscillating impact. After adjustment, the sizes of the axial clearance is checked with a dial indicator.
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