Features of tapered row bearings and bearings starting with figure 6

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Tapered bearings are tapered roller bearings, starting with figure 3, which can bear large radial loads and unidirectional axial loads, but the maximum speed is lower than that of ball bearings (figure 6 head bearings); The figure-6 bearing is a deep groove ball bearing, which can bear a large radial load and a lower bidirectional axial load, and the maximum speed is higher than that of a roller bearing, but the year-on-year radial load bearing capacity is usually not as high as that of a roller bearing (tapered bearing).

Tapered bearing: inner ring with taper, taper 1:12, code k; The taper is 1:30 and is codenamed K30. It is more common in roller bearings and sometimes in bearing units (outer spherical bearings).

Tapered roller bearings, generally starting with 3.

Bearings starting with 6, deep groove ball bearings. One of the most commonly used types of bearings, the rolling element is a steel ball.

Summary. Dear, this is a spherical roller bearing.

Dear, this is a spherical roller bearing.

The spherical roller shaft is equipped with two rows of symmetrical spherical rollers, which mainly bear radial load, and at the same time, you can bear the axial load in either direction, but cannot bear the pure axial load.

The raceway of the outer ring of this kind of bearing is spherical, so its self-alignment performance is good, can compensate for the coaxiality error, when the shaft is bent and blind or the bearing is not centered when the bearing can still be used normally, the self-alignment varies with the different bearing size series, and the self-alignment angle allowed by the forest is 1 degree;

The load capacity of this type of bearing is larger, in addition to bearing radial load, the bearing can also bear the axial load of two-way action, has a good resistance to the impact of Qisen, generally speaking, the allowable working speed of the spherical roller bearing is low. Potato acres are suitable for working under heavy loads or vibration loads.

Bearing is an important component in contemporary machinery and equipment. Its main function is to support the mechanical rotation of the body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

1. Bearing lubricants and types (grease and oil); 2. The working environment of the bearing and the size of the space occupied; 3. The advantages of the supporting key of the shaft bearing structure allow for angular deviation; 4. The circumferential velocity of the sealing surface; 5. The working temperature of the bearing; 6. The cost of manufacturing old beams.

Summary. Bearings starting with a figure 7 may be 7209 angular contact ball bearings, which are hydrodynamic bearings with graded seals that reduce losses and improve efficiency.

The bearing starting with the figure 7 may be the 7209 angular contact shed sprocket bearing, which is a hydrodynamic bearing with a graded seal that can reduce the loss of pure and absorption and improve efficiency.

The bearing at the beginning of the 7th is the 70 series bearing, which is a needle roller bearing, which is composed of an inner ring of rubber dust, a needle roller and an outer ring, which has a high load capacity, wear resistance and corrosion resistance, and is one of the main types of support bearing key potatoes.

Bearings starting with 6 belong to single row deep groove ball bearings.

Deep groove ball bearings are the most common type of rolling bearings. The deep groove ball bearing of this type consists of an outer ring, an inner ring, a set of steel balls and a set of retaining frames. There are two types of deep groove ball bearings: single row and double row, and the deep groove ball structure is also divided into two structures: sealed and open, open means that the bearing does not have a sealed structure, and the sealed deep groove ball is divided into dustproof seal and oil-proof seal.

The dust seal cover is made of steel stamping, which simply prevents dust from entering the bearing raceway. The oil-proof type is a contact oil seal, which can effectively prevent the grease in the bearing from escaping.

The type code for single row deep groove ball bearings is 6, and the code for double row deep groove ball bearings is 4. Its structure is simple, easy to use, is the most common production, the most widely used type of bearing.

It is a deep groove ball bearing, mainly 63 series, 62 series, 64 series and 60 series.

It belongs to class 0, deep groove ball bearings.

The meaning of the cylindrical roller bearing suffix ** is summarized as follows:

ET: nylon cage;

m: copper cage;

w: steel cage;

c3: clearance;

e: strengthened;

TP: outer ring guided;

PPS: resin cage, limit temperature 240 degrees;

TB: roller guide PPS resin cage;

MR: Rolling element guided copper alloy cage, limit temperature 300 degrees;

kr: conical bore with a taper of 1 12;

E44: Outer ring with standard oil groove, oil hole;

CC1: standard clearance for cylindrical inner hole;

CC0: standard clearance for conical bore;

CCG: Special radial clearance;

p4 p5: accuracy.

The type code of tapered roller bearings is 30000, and the tapered roller bearings are separable bearings. In general, tapered roller bearings are 100% interchangeable between the outer ring and the inner assembly.

Tapered roller bearings are mainly used to bear combined radial and axial loads, mainly radial loads. Compared with angular contact ball bearings, the load carrying capacity is large and the ultimate speed is low. Tapered roller bearings are capable of bearing axial loads in one direction and are able to limit the axial displacement of the shaft or housing in one direction.

Hello, tapered roller bearing means that the raceway of the bearing is tapered.

The inner diameter of the inner ring is straight, the raceway in contact with the inner ring and the rollers is tapered, the outer diameter of the outer ring is straight, the raceway in contact with the outer ring and the rollers is tapered, and the inner diameter of the tapered roller bearing is the inner diameter of the inner ring.

General bearings refer to deep hook ball bearings, or bearings with rolling elements of steel balls.

Tapered bearings generally refer to tapered roller bearings. The biggest difference between the two is that one scroll is a sphere and the other is a cone.

In terms of the speed of use, within a certain range, the bearing with a spherical rolling element has a higher speed than the bearing with a conical rolling element.

The bearing carrying capacity of a bearing with a conical rolling element is greater than that of a bearing with a spherical rolling element.

The speed is definitely different, and the tapered bearing has a taper axial load that is better than the general and is mainly used to bear the radial and axial combined load based on the radial load.

One is a straight line! One is the taper!

The ability of a single row tapered roller bearing to withstand an axial load depends on the contact angle, i.e. the outer ring raceway angle, the greater the angle, the greater the axial load capacity. The most widely used tapered roller bearing is a single row tapered roller bearing. In the front wheel hub of the car, small double row tapered roller bearings are used.

Four-row tapered roller bearings are used in heavy machines such as large cold and hot rolling mills.