miniature ball bearings Applications

Medical equipment, cryogenic engineering, optics, high-speed machine tools, high-speed motor, printing machinery, food processing machinery.

In the field of aerospace, marine, nuclear industry, taper roller bearing‍ petroleum, chemical industry, textile industry, machinery, metallurgy, electric power, food, locomotives, subway, high-speed machine tools and research needs of national defense and military technology in high-temperature, high-speed, cryogenic, flammable, explosive, strong corrosion, vacuum, electrical insulation, non-magnetic, dry friction and other special conditions of work, replace the indispensable role of ceramic bearings are being increasingly recognized people.

With the continuous advancement of processing technology, increasing the level of technology, the cost of ceramic bearings declining, has been in some high precision applications in Angular contact ball bearings‍ the field of small-scale tip, gradually extended from the past only to the national economy in various industrial fields, the market price gradually approaching practical, to achieve an acceptable level users, the wave of large-scale applications of ceramic bearings have been coming!

LYHY flanged ball bearing Uses classification

(1), high-speed bearings: a cold, mechanical elasticity is small, anti-stress, poor thermal performance, light weight, low friction coefficient, etc., can be applied at 12,000 rev / min -75 000 rev / min high speed spindle and the other precision equipment;

(2), the bearing temperature: temperature slewing ring bearing‍ of the material itself has 1200 ℃, and good self-lubricating, temperature is not generated due to the expansion caused by temperature differences between the 100 ℃ -800 ℃. Can be used in furnaces, made ​​of plastic, steel and other high-temperature devices;

(3), corrosion-resistant bearings: the material itself has a corrosion-resistant properties, can be applied in the field of acids, alkalis, inorganic and organic salts, water, etc., such as: plating equipment, electronic equipment, chemical machinery, shipbuilding, medical equipment, etc. .

(4), magnetic bearings: do Single row crossed roller slewing bearing‍ not smoke because of non-magnetic dust, can reduce bearing advance peeling, noise and large. Available in demagnetization device. Precision instruments and other fields.

(5), electrical insulation flanged ball ‍bearings: due to the high resistance force, can avoid arcing damage bearings, available in a variety of requirements for insulation of electrical equipment.

(6), vacuum Bearings: Ceramic materials for unique oil-free self-lubricating properties, in ultra-high vacuum environment, can not be achieved to overcome the plain bearing lubrication problems. Note: The above five categories bearings, bearing the same set can be applied to high-temperature, high-speed, pH, Angular contact ball bearings‍ magnetic field, in the non-insulated, but the material properties vary (see performance table of rare earth ceramic material) so please customers choose products, applied according to their own situation, to select the material most suitable ceramic bearings.

high speed bearing Silicon nitride ceramic bearings

Silicon nitride ceramic bearing rings and rolling silicon nitride (Si3N4) ceramic materials, the general use of RPA66-25, PEEK, PI, and phenolic cloth bakelite tubes. SiN4 system ZrO2 full ceramic bearings compared to material suitable for higher speed and load capacity, as well as suitable for higher ambient self aligning ball bearing‍ temperatures. While providing precision ceramic bearings for high-speed precision and high rigidity of the spindle, the highest manufacturing precision of P4 to UP level.

Full ceramic bearings, full complement ball

Full complement ball full ceramic bearing side with Tim ball gap, due to the use of cage-free design, you can load more than the ceramic ball bearing standard structure, thereby increasing its load capacity, also can avoid the restrictions shelf materials can be achieved by ceramic cage type full ceramic bearing corrosion and temperature effects. The series bearing suitable for high speed, the installation should pay attention to the gap surface mounted on one end does not bear the axial load.

Hybrid ceramic ball bearings

Especially silicon nitride ceramic balls ball with tower crane bearing‍ a low density, high hardness, low friction coefficient, wear-resistant, self-lubricating and rigidity characteristics, especially suitable for high-speed, high-precision and long life hybrid ceramic ball bearings rolling elements (inner and outer rings metal). General inner and outer rings bearing steel (GCr15) or stainless steel (AISI440C), ceramic balls can be used ZrO2, Si3N4, or SiC material.

miniature ball bearings Deep groove ball bearings

(Technical grade: P4, P5, P6, P0) deep groove ball bearings, the most representative of rolling bearings, widely used, can bear radial load and axial load. Suitable for high-speed, thin section angular contact bearings‍ low noise, low vibration and high temperature occasion or steel bearings can not be applied, the cold, corrosion, magnetic, non-insulated and other fields.

Aligning ball bearings

Aligning ball bearing outer ring raceway spherical, self-aligning, can add error misalignment and shaft deflection caused. Shaft and housing for generating different parts of the heart or shaft deflection and aligning parts of high temperatures, low cold, corrosive, non-magnetic insulation requirements. Note: The tilt is not more than 3 degrees.

Single row angular contact ball bearings

(Technical grade: P4, P5, P6, P0) angular contact bearings for high-speed and high-precision rotation, at high temperature, magnetic field, water and so does not affect its accuracy, and cross roller bearings‍ can withstand the synthesis load. Standard contact angle of 15 °, 30 ° and 40 °, the contact angle greater the greater the axial load capacity, the contact angle is smaller bearings can bear radial load and axial load. Generally installed in pairs taken. Please take note at the time of purchase.

Thrust ball bearings

Thrust ball bearings, with the ball rolling by washer-shaped raceway rings and the ball cage assembly components. Can withstand axial load, but can not bear radial load.‍

LYHY flanged ball bearing( Radial ball bearing

Radial ball bearing is a universal design that can withstand the load of different sizes in the high-speed movement. This type of rolling bearings by sets of precision ball and cage as well as the composition of the inner and outer rings. Which standard radial ball bearings there is a deep groove structure that can withstand the Double Row Ball Slewing Bearing‍ radial load and smaller axial load from any direction. Has a maximum load capacity of radial ball bearings mainly take radial load. This type of bearing a variety of sizes to choose from. Different configurations can be sealed to protect the internal components of rolling bearings and grease can be retained. Radial ball bearings are widely used in general industry, automotive industry, agriculture, chemical and household appliances industries.

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LYHY flanged ball bearing bearing

Fatigue life test is to maximize the full lubrication abrasion factor inhibiting the bearing load and speed, the enhancement to an enhanced fatigue life test method for outstanding bearing fatigue factors.

The calculation and test of fatigue life of bearing fatigue single direction thrust ball bearing‍ life is complementary, the two results are corresponding enough. But in reality, such as for each specific occasions, all selected Boying bearing a sufficient number of life test, to verify the selected bearing is suitable or not, this is very big in the economy, time and amount of labor, so the life test of automotive bearings only is used in a very necessary or important case, in most cases, the standard life calculation method to estimate the service life of the bearings, with a sufficient degree of dependency. To predict the fatigue life of bearing, determining the remaining life, need to understand the bearing fatigue all the failure phenomenon, so it will take a long time. However, because the rolling fatigue fatigue at the contact point under compressive stress occurs, to achieve the damage will occur great change of materials. Therefore, in addition to extend prior to material changes in surface cracked, raceway suffer chemical effect, crack cases, detection of material changes may judge the vehicle bearing fatigue. The main reason is the defect of bearing fault off the overload two elements. When the load across the material Angular contact ball bearings‍ strength and the formation of broken parts called overload fracture. The reason is mainly from the sudden overload machine fault or install. Are defects cause fracture can be bearing parts of the micro cracks, shrinkage, bubbles, large foreign things, organizations and local overheating burn defect is shock overload or violent vibration, known as the defect fracture. It should be noted that, automobile bearing is process, the materials into the factory inspection, casting and heat treatment quality control, process control and instrument for the precise analysis of the defects can be through with no, then must still strengthen control.

But in general, the failure of most overload bearing fracture usually.‍

high speed bearing Bearing clearance selection technique

Clearance is an important factor in rolling bearing can work normally, divided into the axial clearance and the radial clearance. Select the appropriate clearance, can make the load in the high speed bearing ‍ rolling body between the reasonable Double Row Ball Slewing Bearing‍ distribution; can limit axis (or shell) of the axial and radial displacement, ensure the rotating precision of shaft; the bearing work at a prescribed temperature; reduce the noise and vibration, to improve the bearing life. Therefore. In the selection of bearings, bearing clearance, must choose the appropriate.

Selection of bearing clearance, should consider the following aspects:

1, the bearing working conditions, such as load, temperature, speed etc.;

2, on the use of performance requirements (bearing rotation accuracy, friction torque, vibration, noise);

3, the bearing self aligning ball bearing‍ and the shaft and housing bore is in interference fit with the lead to reduction of bearing clearance;

4, when the inner and outer rings of bearing, the temperature difference caused reduction of bearing clearance;

5, because the expansion coefficient of shaft and housing materials of different, resulting in the decrease or increase of bearing clearance.

6, according to experience, the most suitable for ball bearing clearance work to nearly zero; roller bearing should keep a small amount of clearance. At the request of supporting rigid good parts, bearing preload has certain value. Here is particularly pointed out that, the so-called clearance refers to the bearing clearance, in the actual operating condition. There is also a play called the original wheel bearing‍ clearance, refers to the bearing without clearance. The original clearance than installation clearance. We choose to play, mainly is to choose appropriate clearance.