Deep groove ball bearings are the most common types of bearings which are durable and easy to maintain.
Having a simple structure consisting of an outer ring, an inner ring, a ball, and a cage in various sizes, these are available in single and double-row designs as well as in open and sealed variants. Compared with the other kinds of bearings, DGBB have a very low frictional coefficient and high speed limit which makes them unable to endure high impact and heavy loads.
Features
Deep groove ball bearings are the simplest yet the most popular bearing: Suitable for very high rotating speeds Well suited for medium high radial and axial loads in one or both directions Various seals and grease variants available for different operating conditions Numerous clearance and tolerance classes available for different operating conditions Standard: DIN 625 Series: 600, 6000, 6200, 6300, 6400, 1600; Thin-ring: 61800, 61900
6202 bearings can be used in:
softened water equipment, speed changer, dehydration equipment, plastic granulator, brewing equipment, plate heat exchanger, tower crane, metering pump, impact test machine, filling machinery, chemical experiment equipment, horizontal dryer, Folding machine, drug cutting machine, bottom pressing machine, dustproof cloth, powder sieving machine, paint baking equipment, etc.
Whether the house is strong enough depends on how well the foundation is laid; whether the cotton-padded jacket is warm depends on the type of filling. In reality, there must be inner support to show a better appearance. Let us look at the role of transmission bearings together.
The role of transmission bearings - transmission requirements for bearings
1. Consider the shape and connection size of the variable speed transmission bearing.
2. The variable speed transmission bearing can be installed horizontally, vertically or obliquely. Can be rotated positively and negatively. Can input and output power positively and negatively (that is, decelerate or increase speed).
3. Regardless of the installation method of the variable speed transmission bearing, there are requirements for size matching with its connecting parts.
Recommended: H7/h6 for the fit between the inner ring hole d and the shaft; H7/r6 for the fit between the pin hole do on the middle ring and the transmission; H8/h7 for the fit between the outer ring D and the housing; H8/h7 for the fit between the drive and the output shaft The fit adopts clearance fit, and the clearance is 0.2~0.5mm.
4. Axial positioning of variable speed transmission bearings: After any one of the three circles is axially positioned, the other two shafts do not need to be axially positioned.
5. The direction of rotation is positioned; the outer ring and the inner ring are positioned by flat keys. The middle ring is positioned by transmission.
6. The variable speed transmission bearing can bear a small external force in the radial direction, but it is not suitable to bear a large working load.
7. The transmission ratio is the transmission ratio of the first installation method. If other installation methods are used, the transmission ratio should be calculated.
8. At the rated speed (1500rpm), select the variable speed transmission bearing model according to the transmission ratio and the required power (Kw).
9. When the working torque is used as the basis, the model should be selected accordingly.
10. The selection of the reducer model is consistent with the model of the variable speed transmission bearing.
The role of transmission bearings - types
Deep Groove Ball Bearings
The structure is simple, the use is convenient, and the application is the most extensive. It is mainly used for radial load, and can also bear certain axial load. When the radial clearance is large, it has the property of angular contact ball bearing. Compared with other types of bearings of the same size, this type of bearing has the characteristics of small friction coefficient, high limit speed, high manufacturing precision, easy to realize bearing sealing, etc., and is the preferred bearing type for users. (Double row angular contact ball bearings, tandem ball bearings, clean bearings)
Cylindrical Roller Bearings
It is a separable bearing, which is easy to install and disassemble. It is generally used to bear radial loads. Compared with deep groove ball bearings with the same external dimensions, it has greater radial load capacity and rigidity, and is suitable for high loads or high rigidity requirements. occasions.
Tapered Roller Bearings
It is mainly used to bear combined radial and axial loads, mainly radial loads. It has a large bearing capacity, but it is difficult to improve the manufacturing accuracy and has high noise. It is not suitable for high-speed and low-noise occasions.
Needle bearing
Needle roller bearings: (stamping, thrust, needle roller, cage assembly) Due to their compact structure, small radial size and large load capacity, they are especially suitable for supporting parts with limited radial installation size, which is in line with the miniaturization and weight reduction of mechanical equipment development requirements.
Linear Bearings
Linear motion ball bearings are mainly used in the linear reciprocating motion parts of mechanical equipment, which have the advantages of small friction, flexible movement, and convenient maintenance and replacement.
clutch bearing
The structural types of this kind of products mainly include stamping outer cover angular contact ball bearings and single-sided rubber sealing ring angular contact ball bearings. Generally, the outer ring rotates and cannot be used alone. Generally, it needs to be used with cast iron sleeves. These products are gradually being replaced by the release bearing of the self-aligning clutch. (The self-aligning clutch release bearing assembly has the characteristics of self-aligning, long life, light weight, etc.; it has the function of reducing noise and reducing wear and damage of matching parts. Its core part is a set of angular contact ball bearings).
The role of transmission bearings will be directly related to the function of the automobile transmission. The automobile transmission must meet various requirements, including smooth shifting, high output power, compact structure, light weight, high efficiency and low noise, etc., and these requirements Higher and higher. Therefore, the performance of transmission bearings must also meet higher requirements. This is the basis for developing automotive transmission bearings.
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