Rolling bearings: In the support of load and relative movement of each other between the parts for rolling movement of the bearing, it includes the parts with raceway and with or without isolation or guide parts of the rolling body group. Can be used to bear radial, axial or radial and axial combined load.
Angular contact bearing: ball and ring nominal contact angle greater than 0 °, and less than 90 ° rolling bearing.
Outer spherical bearing: there are outer spherical surface and with locking member of the wide inner ring of the centripetal rolling bearing. Mainly for simple shell use.
Linear motion bearing: two raceways in the rolling direction with relative linear motion of the rolling bearing.
Ball bearing: rolling body is the ball of rolling bearing.
Deep groove ball bearings: each ring has a cross-section of about one-third of the circumference of the ball continuous groove type raceway to the heart of the ball bearing.
Thrust ball bearing: the rolling body is the ball of the thrust rolling bearing.
Roller bearing: rolling body is the roller rolling bearing.
Cylindrical roller bearing: rolling body is cylindrical roller of the centripetal rolling bearing.
Tapered roller bearings: rolling body is tapered roller centripetal rolling bearings.
Needle roller bearings: the rolling body is the needle roller centripetal rolling bearings.
Spherical roller bearings: rolling body is convex spherical or concave roller spherical roller bearings. There are convex spherical roller bearings, the outer ring has a spherical raceway; there are concave roller bearings, the inner ring has a spherical raceway.
Thrust roller bearings: rolling body is the roller thrust rolling bearing.
Thrust cylindrical roller bearings: rolling body is the cylindrical roller thrust rolling bearings.
Thrust tapered roller bearings: rolling body is the tapered roller thrust rolling bearings.
Thrust needle roller bearings: the rolling body is the needle roller thrust rolling bearings.
Thrust spherical roller bearings: rolling body is convex spherical or concave roller spherical thrust rolling bearings. There are convex spherical roller bearing seat ring of the raceway for the spherical shape, there are concave spherical roller bearing shaft ring of the raceway for the spherical shape.
With seat bearing: to the heart of the bearing and seat combination in a kind of assembly, in parallel with the bearing axis line of support surface has a mounting screws on the bottom plate.
Joint bearing: sliding contact surface for spherical, mainly for oscillating motion, tilting motion and rotary motion spherical plain bearing.
Combined bearing: a set of bearings at the same time by the above two bearing structure form combination of rolling bearings. Such as needle roller and thrust cylindrical roller combination bearings, needle roller and thrust ball combination bearings, needle roller and angular contact ball combination bearings.
Other bearings: in addition to the above other structure of rolling bearings.

The use of automotive bearing maintenance instructions, automotive bearing maintenance instructions, the vehicle rated load range of work seriously overloaded, directly leading to bearing overload bearing produces early failure, more serious cause vehicle failure personal safety accidents, prohibit bearing abnormal impact load, regular inspection bearing use state, pay attention to observe whether the bearing parts abnormal sound, local sharp temperature rise phenomenon requires regular quantitative, liquid dynamic static * bearing Commonly used axle housing with shaft

　　The use of automotive bearings maintenance instructions.

　　1. the vehicle should work within the rated load range, if the serious overload will directly lead to bearing overload, will cause early failure of the bearing, more serious is to cause vehicle failure and personal safety accidents.

　　2. the bearings should not be subjected to abnormal shock loads

　　3. regularly check the use status of the bearing, pay attention to observe whether the bearing parts have abnormal sound and local sharp temperature rise phenomenon.

　　4. refill oil or grease regularly and quantitatively as required.

　　5. depending on the condition of the vehicle in use, replace the lubricant thoroughly at least once every six months and inspect the bearings carefully.

　　Bearing maintenance state inspection: clean the dismantled bearing with paraffin or petrol, carefully observe whether the inner and outer cylindrical surface of the bearing has sliding or creeping phenomenon, whether the inner and outer raceway surface of the bearing has flaking and pitting condition, whether the rolling body and cage are worn and deformed, etc. According to the comprehensive situation of the bearing inspection, judge whether the bearing can continue to use.

The basic code of each type of bearing
1. Basic code Imported bearings

A basic code used to indicate the bearing inside diameter, diameter series, width series and type, generally zui more than five digits, first divided as follows:.

(1) bearing bore with the basic code from the right *, H digital representation. For the common inner diameter d = 20 ~ 480mm bearing inner diameter is generally a multiple of 5, the two numbers indicate the bearing inner diameter size by 5 divided by the quotient, such as 04 said d = 20mm; 12 said d = 60mm, etc.. For the inner diameter of 10mm, 12mm, 15mm and 17mm bearings, inner diameter code for 00, 01, 02 and 03. For inner diameter less than 10mm and more than 500mm bearings, the inner diameter of the method otherwise specified, can refer to GB/T272-93.

(2) bearing diameter series (i.e. the same structure, the same inner diameter bearing in the outer diameter and width of the change series) with the basic code from the right of the third digit. For example, for to the heart of the bearing and to the heart of the thrust bearing, 0, 1 indicates the special light series; 2 indicates light series; 3 indicates in the series; 4 indicates heavy series. A comparison of the dimensions between the series is shown in the diagram below. The dimensions of the axial bearings are the same as those of the radial bearings, except that 1 is used for the extra light series.

(3) bearing width series (i.e. structure, bore and diameter series are the same bearing width variation series) with the basic code from the fourth digit from the right. When the width of the system Figure 13-4 diameter series of the contrast as 0 series (normal series), the majority of bearings in the code may not be marked out width series code O, but for spherical roller bearings and tapered roller bearings, width series code 0 should be marked out.

Diameter series code and width series code is collectively referred to as the size series code.

(4) bearing type code with the basic code right from the fifth digit (for cylindrical roller bearings and needle roller bearings and other types of code for the letter).

2. Back code

The rear code of the bearing is used letters and numbers etc. to indicate the structure of the bearing, tolerances and special requirements of materials etc. There are a lot of posterior designations, the following are a few commonly used designations.

(1) The internal structure code is to indicate the different internal structure of the same type of bearing, using letters followed by the basic code. Such as: contact angle for 15 °, 25 ° and 40 ° of the angular contact ball bearing with C, AC and B respectively, said the internal structure of the different.

(2) bearing tolerance level is divided into 2, 4, 5, 6, 6X and 0, a total of 6 levels, in turn by to the low level, its code / PZ, / P4 ‘/ PS, / P6, / P6X and / PO. tolerance level, 6X level only for tapered roller bearings; 0 level for ordinary level, in the wheel bearing code is not marked out.

(3) common bearing radial clearance series is divided into 1 group, 2 groups, 0 groups, 3 groups, 4 groups and 5 groups, a total of 6 groups, radial clearance in order from small to large. o group clearance is commonly used clearance groups, in bearing code is not marked, the rest of the clearance groups in bearing code with / CI, / CZ, / C3, / C4, / CS said.

3. Pre-code

The bearing’s front code is used to indicate the bearing’s sub-parts, using letters to indicate. For example, L indicates the separable ring of a separable bearing; K indicates the rolling body and cage assembly of a bearing, etc.

The actual application of rolling bearing types is a lot, the corresponding bearing code is also more complex. The above code is the bearing code in zui basic, zui common part, familiar with this part of the code, you can identify and check the common bearing.

Deep groove ball bearings are simple in structure and easy to achieve high manufacturing accuracy compared to other types, so it is easy to mass produce in series, the manufacturing cost is also lower, and the use is extremely common. In addition to the basic type, deep groove ball bearings are also available in various variants.

So how do we install deep groove ball bearings? Let’s learn more about it.

　　Deep groove ball bearing installation method a:

　　Press in with: bearing inner ring and shaft make tight fit, outer ring and bearing seat hole is more loose fit, available press will bearing first pressed in the shaft, then the shaft together with the bearing into the bearing seat hole, pressed in the bearing inner ring end face, pad a soft metal material to do the assembly casing (copper or soft steel), bearing outer ring and bearing seat hole tight fit, inner ring and shaft for more loose fit, can be pressed into the bearing seat first Hole, when the outer diameter of the assembly casing should be slightly smaller than the diameter of the seat hole. If the bearing collar and shaft and seat hole are tight fit, installation of the inner and outer ring to be pressed into the shaft and seat hole at the same time, the structure of the assembly casing should be able to tighten the bearing inner and outer ring end face.

　　Deep groove ball bearing installation method II:

　　Heating with: by heating the bearing or bearing seat, the use of thermal expansion will be tight with the loose with the installation method. Is a common and labor-saving installation method. This method is suitable for the installation of a large amount of interference bearing, hot fit before the bearing or separable bearing collar into the oil tank evenly heated 80-100 ℃, and then removed from the oil as soon as possible to install to the shaft.

　　To prevent the inner ring end face and shaft shoulder from fitting tightly after cooling, the bearing can be axially fastened again after cooling. When the outer ring of the bearing is tightly fitted with the light metal bearing seat, use the hot method of heating the bearing seat to avoid abrasion of the fitting surface.

　　When heating the bearing with the oil tank, there should be a net fence at a certain distance from the bottom of the box, or use a hook to hang the bearing, the bearing cannot be put on the bottom of the box to prevent sinking impurities into the bearing or uneven heating, the oil tank must have a thermometer, strict control of the oil temperature shall not exceed 100 ℃, in order to prevent the occurrence of tempering effect, so that the hardness of the ring reduced.

　　The above content is this time for you to share information about deep groove ball bearings, I hope you can have more understanding of the product after reading.

　　The lubrication method of bearings is divided into grease lubrication and oil lubrication. In order to make the bearings function well, first of all, we should choose the suitable lubrication method for the use conditions and purpose. If only lubrication is considered, the lubricity of oil lubrication is dominant. However, grease lubrication has the advantage of simplifying the structure around the bearing, comparing the advantages and disadvantages of grease lubrication and oil lubrication.

Purpose of bearing lubrication.

　　The purpose of lubrication of rolling bearings is to reduce internal friction and friction loss of bearings and to prevent burning and sticking, and its lubrication utility is as follows.

　　(1). Reduce friction and friction loss.

　　In the composition of the bearing collar, rolling body and keeper of the mutual contact part, to prevent metal contact, reduce friction, wear.

　　(2). Extend fatigue life.

　　Bearing rolling fatigue life, in the rotation, rolling contact surface lubrication is good, it is extended. Conversely, low oil viscosity and poor lubricating film thickness shorten it.

　　(3). Exhausting frictional heat, cooling

　　The circulating oil feed method and other methods can be used to discharge the heat generated by friction, or heat transmitted from outside, and cooling. Prevent the bearing from overheating and prevent the lubricant itself from ageing.

　　(4). Other

　　It also has the effect of preventing foreign objects from intruding into the bearing, or preventing rust and corrosion.

Common faults of deep groove ball bearings are high temperature and running noise. In the bearing operation process, allow the bearing to have a certain temperature, to feel the hand does not burn for normal. The temperature is generally too high because the bearing lubricant does not meet the requirements or deterioration, the lubricant viscosity is too high, the body assembly is too tight resulting in insufficient clearance, bearing seat ring in the shaft or shell rotation, bearing load is too large, bearing cage or rolling body rupture, etc..
  Deep groove ball bearing failure phenomenon is generally manifested as two kinds, one is the bearing installation part temperature is too high, the second is the bearing operation with noise.

Correct installation and reasonable lubrication can make deep groove ball bearings in operation to reduce operational failure and extend the life of deep groove ball bearings.

A, the correct use of deep groove ball bearings
1、The disassembly and installation of deep groove ball bearings. The bearings should be cleaned before installation. Use special bearing installation tools to press the bearings straight and evenly, do not use hand pound to knock, especially prohibit direct knocking on the bearings. When the bearing seat ring and seat hole are loose, the seat hole should be repaired or the bearing should be replaced, and the bearing should not be used reluctantly by means of pockmarks or shims on the surface. The bearing should be dismantled by using suitable tools to pull out the bearing, not by using tools such as chisels to knock the bearing.
2、Lubrication of the bearing. Lubricant and grease are commonly used lubricants for deep groove ball bearings. When the circumferential speed of the shaft is less than 4~5m/s, certain environments that cannot use lubricant can be lubricated with grease. Using grease lubrication bearing seal structure is relatively simple, grease is not easy to lose, less affected by the temperature, the use of a longer time.
When using grease, care must be taken to select the right grade, and in some cases it is necessary to use a grease with specified characteristics. Add the right amount of grease, generally only fill the bearing cavity 1/3 to 1/2, too much grease will increase the bearing resistance, resulting in high bearing temperature. For automotive wheel bearings, which advocate “empty hub lubrication”, only a moderate amount of grease should be applied to the bearing, otherwise it will lead to poor heat dissipation and heat spillage of the grease, which will affect the braking performance.

The advantages of using lubricant lubrication are low frictional resistance and good heat dissipation, which can be used at high speeds and under high ambient temperature requirements. Lubricant brand should be selected according to the requirements, and timely replacement.

Deep groove ball bearings are currently widely used in mechanical parts of a bearing type, we all know that deep groove ball bearings in the use of the process will often appear some problems, such as frequent damage to the bearing in the process of use. How to reduce the deep groove ball bearing in the application of “early damage”?

In a variety of practical use, metallurgical industry is a deep groove ball bearing damage more frequent industry, by professional analysis, the main reason lies in the application of metallurgical equipment special, high temperature, high dust, heavy load, shaft extension, shaft deflection, etc. are caused by deep groove ball bearing damage in advance of the important reasons.

The service life of deep groove ball bearings in metallurgical industry is related to the frequency of maintenance of enterprise equipment and eventually affects the profit of business, choose high quality deep groove ball bearings not only related to enterprise procurement cost, maintenance cost, replacement period, product quality, equipment utilization rate and worker utilization rate, but also can reduce the failure rate of equipment, reduce non-essential capacity loss. It is a necessary condition for enterprise development.

How can we reduce the deep groove ball bearing in the application of early damage, should be everyone is more concerned about a problem.

Deep groove ball bearing damage is not only the main way of performance of the inner and outer ring fracture, rolling body broken and keeper fracture, especially in the metallurgical industry, bearing damage is very common, there are many reasons for damage For example, the installation positioning is not tightly caused by the bearing in the shaft or seat hole sliding, clearance is too small caused by excessive friction bearing heat, overload or larger vibration load, impact load, bearing seal poorly caused by the intrusion of impurities, etc., are deep groove ball bearing early damage or even fracture of the main reason.

Solutions are: pay attention to the internal clearance of the bearing and a certain amount of axial or radial movement, especially after the installation of clearance, for heavy load, high temperature occasions.
Be sure to ensure that the internal clearance of the bearing after installation has a certain amount of clearance to ensure that after working for a period of time, as the bearing temperature rises
The internal clearance of the bearing will not be too large because of the tightness between the rolling element and the raceway, which will cause the bearing to fail in advance. Improve the sealing effect, timely and regular supplemental lubrication can also effectively solve the problem of early bearing damage.

Deep groove ball bearing size range and the form of a variety of applications in precision instruments, low noise motors, automobiles, motorbikes and general machinery and other industries, is the mechanical industry in the use of a particularly wide range of bearings. Mainly bear radial load, can also bear a certain amount of axial load.

　　Select a larger radial clearance when the axial bearing capacity increases, bearing pure radial force when the contact angle is zero. When there is axial force, the contact angle is greater than zero. The general use of stamping wave-shaped keep frame, car system entity keep frame, sometimes also use nylon frame.

　　Deep groove ball bearing installed in the shaft, in the bearing of the axial clearance range, can limit the shaft or shell two directions of axial displacement, so can be in both directions for axial positioning. In addition, this type of bearing also has a certain ability to adjust the heart, when relative to the shell hole tilt 2′ ~ 10′, still can work normally, but the bearing life has a certain impact. Deep groove ball bearing keep frame more for steel plate stamping wave-shaped keep frame, large bearing more use car metal entity keep frame.

　　Deep groove ball bearings are commonly used rolling bearings. Its structure is simple and easy to use. Mainly used to bear radial load, but when increasing the bearing radial clearance, has a certain angular contact ball bearing performance, can bear the diameter, axial combined load. In the high speed and should not use thrust ball bearing, can also be used to bear pure axial load.

　　With deep groove ball bearing specifications of the same size of other types of bearings, such bearings friction coefficient is small, high limit speed. But not resistant to impact, not suitable for heavy load.

　　The above is all the content shared for you, I hope the above content can help you, thank you for watching and support, later will organize more information to you, please pay attention to our website updates.