Deep groove ball bearing material in a large extent determines the service life of the bearing, once the metallurgical quality of bearing steel GCr15 is caused by the rolling bearing early failure is the main reason. After a substantial increase in metallurgical technology, bearing steel and other materials have emerged, has been greatly improved.
In the bearing failure analysis, caused by raw materials bearing failure ratio has also been greatly improved, but the manufacturing material is still the main cause of the bearing failure, considerable more and deep groove ball bearing service life. Bearing manufacturing process complex, to go through multi-channel processes can be finished, the forging, heat treatment, machining and grinding process of technological capability and quality will affect the bearing service life and application effect, especially heat treatment and grinding process, is the direct cause of a lot of bearing failure, the need to get production enterprises attach great importance to.
After the installation of deep groove ball bearing, in order to check the installation is not correct, to running inspection. Small machinery can be rotated by hand to determine whether the rotation is smooth. Check the project mainly due to a foreign body, indentation caused by poor functioning, due to poor installation, installation seat processing bad moment instability, caused because the clearance is too small, installation error, seal friction torque and so on. If there is no exception, you can start a dynamic operation.
In the shaft and bearing seat, the bearing requirements in the radial, axial and tangential direction, such as the three fixed position. Radial and positioning to cut through the tight fit of the bearing rings realize pick, axial position only in a few cases the tight fit; generally use the axial spacing parts, such as the end cover and a retainer ring, etc. the axial position defined in the context of clearance.
Choose to pay attention to the following four points:
(1) the circumferential surface of bearing rings should have good support and uniform force, in order to reduce the distortion, and can give full play to the bearing capacity.
(2) rings in their mating surfaces cannot slide along the tangent, otherwise it will damage the mating surfaces.
(3) free end bearings must be able to adapt to changes in the length of the shaft and the hole of the bearing seat, which must have the ability to adapt to the axial position in a certain range.
(4) must pay attention to the deep groove ball bearing installation and removal easy, saving time and labor costs.

 Bearing raceway is due to the bearing rotates roller in roller in rolling and stimulate the smooth and continuous noise, only when the sound pressure level or tone of voice greatly to cause people to pay attention to. In fact, rolling road sound excited by acoustic energy is limited, such as in normal circumstances, high-quality 6203 deep groove ball bearings roll say 5 to 27db. Deep groove ball bearing this noise to bear radial load is the most typical, it has the following characteristics.
First, the frequency of vibration in more than 1kHz.
Two, the bearing rigidity increases, the lower the total sound pressure, which makes the type of speed increase and the total sound pressure level is slightly increased.
Three, the higher the viscosity of the lubricant, but the lower the sound pressure level, the viscosity of the grease, the shape and size of the soap fiber can affect the noise value.
Four, no matter how to change speed, noise frequency and sound pressure level is almost the same as

Bearing in the installation process will encounter many technical terms, duplex bearing Co., Ltd., Dongguan City, summed up the following terminology commonly used and the corresponding term analysis, welcomed the reference, if there is an error please give correct!
1. Contact angle vertical to axis line plane (radial) and after the bearing ring or washer drive to rolling body force between the line of action (nominal role of line) angle.
The diameter of the inner (outer) of the inner (outer) of a ball in the ball bearing inner (outside) of the 2 ball group.
Inner (outer) diameter of the inner (outer) diameter of the inner (outer) of a row of rollers in the 3 roller group.
4 nominal bearing ring width two end theory (the distance between the back of the washer). To limit the width of the radial bearing (thrust bearing height).
5. The actual bearing width centripetal bearing axis line with limited width of bearing ferrule actual end two tangential intersection plane distance. Defining bearing width with the end face of the inner ring and the end face of the outer ring.
6 the actual width of the actual bearing width deviation of the actual width of the bearing and the difference between the nominal width.
7 the difference between the maximum and minimum radial distance between the inner hole surface and the fixed point on the inner hole surface and the fixed point of the inner ring of the bearing ring in different angular positions of the inner ring of the bearing ring Kia. At the corners of the above points or in the vicinity of the rolling elements on both sides of the inner and outer ring or inner ring back edge of the block (tapered roller bearing) in contact with the bearing parts in normal relative position.
8 the difference between the maximum and minimum radial distance between the outer diameter surface and the relative inner ring at different angular positions of sets of bearing rings. At the angle of the above points or in the near both sides of the rolling elements should be in the inner, outer ring or inner ring back edge of the block (tapered roller bearing) in contact with the bearing parts in normal relative position.
9. The complete bearing inner ring end face of the raceway beating SIA inner ring at different angular positions, in from the inner ring axis radial distance is equal to the inner ring raceway contact diameter half, inner ring base end with respect to the outer ring of a fixed point between maximum and minimum axial distance difference. Inside and outside the roller should be in contact with all the rolling body.
. the complete bearing outer ring end face of the raceway beating outer ring at different angular positions, in from the outer axis of radial distance is equal to the outer ring raceway contact diameter half, ring base end with respect to inner ring of a fixed point difference between the maximum and minimum axial distance. Inside and outside the roller should be in contact with all the rolling body.
11. The end of inner hole of the bearing beating SD in the distance the radial distance from the axis of the inner ring is equal to the rolling contact diameter half of the vertical axis line of the ring and the plane of the ring base end between the maximum and minimum axial distance.

Deep groove ball bearings due to different purposes and working conditions, structural change has many kinds, but the basic structure are the inner ring, outer ring, rolling body (ball) and holder of four parts.
One, inner ring (also known as inner sleeve or inner ring). Is usually fixed on the shaft, the inner ring and shaft rotation. The outer surface of the inner ring is provided with a groove which is used for rolling the ball or roller, and is called the inner groove or the inner roller path.
Two, outer ring (also known as outer ring or outer ring). Usually fixed on the bearing seat or the shell of the machine, play the role of supporting steel ball rolling body. The outer surface of the outer ring is provided with a groove which is provided with a rolling ball or a roller, and is called an inner groove or an inner roller path.
Three, rolling body (steel ball). Each set of deep groove ball bearings are equipped with a group or several groups of rolling body, is arranged between the inner ring and the outer ring, rolling effect of the force transfer. The rolling element is the part that bears the load, and its shape, size and quantity determine the performance of the bearing capacity of the bearing.
Four, the holder (also called holder or isolator). The rolling elements in the bearing are separated from each other, so that each of the rolling elements is rolled between the inner and outer rings. In addition, the cage has the function of guiding the rolling body movement, improving the lubricating condition of the bearing, and preventing the rolling body from falling off.
In the thrust ball bearing, and the shaft with the ring name ring shaft, and the bearing or machine shell with rings rings to ring, shaft ring and ring collectively referred to as washers. In addition to the above four parts, a variety of different structure of the bearings and other parts to match. For example, rivet, dust cover, sealing ring, washers, ring and sleeve etc..

Deep groove ball bearing corrosion usually between rust and antirust products division.
Between the work of anti rust is a process in the process of rust, usually in 3-30 days. Generally can use water-based anti rust agent. The advantages of water-based anti rust agent is simple operation and low cost. And after rust, do not need to clean the oil.
The finished rust generally refers to rust before assembly of deep groove ball bearing storage or after delivery, usually at the time of 1 months -2 years. General use of coated anti rust oil or VCI anti rust paper packaging. VCI anti rust paper packaging has the advantages of good rust prevention effect, free cleaning before assembly, easy to operate, environmental protection and energy saving.
VCI rust proof paper will be released a small amount of rust inhibitor (VCI definition: volatile corrosion inhibitor). In this paper the package, will form a protective layer of gas in the package, can reliably inhibit corrosion of deep groove ball bearing. VCI rust proof paper in direct contact with the bearing and a certain range of rust effect; bearing the VCI rust proof paper packaging rust, rust can be up to 3 years; bearing the VCI anti rust film packaging rust, rust up to 1 years. This is the most used Harbin HRB products, now commonly used is anti rust process in plastic containers.

What is the reason for the micro bearing and shaft sintering together?
A: it is possible that the hole and shaft of the shaft with the loose, resulting in the inner ring and shaft between the high temperature caused by the slip caused by the inner ring and shaft sintering together.
Solution: according to different types of bearings, the standard bearing is made of hardened steel and induction quenching heat treatment of steel, the proposed maximum operating temperature between 120 to 200 degrees. If the bearing needs to work continuously at high temperature, the dynamic load capacity of the bearing may need to be adjusted. Also pay attention to the role of lubricants. Bearing materials, working environment, lubricants, etc. should be noted that.
Generally everyone says C3 clearance. In the end is what data ah? Be able to talk about it? How to determine, how to detect?
Answer: bearing clearance is refers to the bearing is not installed, the inner or outer ring of a fixed, and will not be fixed by a radial or axial movement of the movement. According to the movement direction, can be divided into radial clearance and axial clearance. Operation (called work clearance) clearance size on the bearing rolling fatigue life, temperature, noise, vibration and so on performance influence. The radial clearance of rolling bearings are generally divided into /C1, /C2, /C0, /C3, /C4, /C5 in these groups. 1, the 2 groups belong to the small clearance; group 0 group 3, 4 standard clearance; the 5 group was larger clearance group. Rolling bearing clearance group selection should be according to the product type, size, temperature and with the shaft and Kong Peihe elastic degree according to the corresponding standard to choose. Of course, this is the equipment in the selection of the problem should be determined. The clearance detection to professional testing according to relevant industry standards.