high precision Slewing bearing should be used

there are strict requirements for precision rotation of the spindle, high precision Slewing bearing should be used, such as precision lathes, milling machines, boring, grinding grinding, aircraft engine, turbocharger, precision instruments selected C, D grade; coordinate boring machine, High-speed grinding elect B, C grade. Rolling easy maintenance, reliable, good starting performance at moderate speeds higher carrying capacity. Compared with the sliding bearing, radial bearing a larger size, poor damping capacity, high speed, low life sound bigger. Rolling in the special bearing (mainly radial force) usually consists of inner and outer rings, rolling and rolling element cage four parts.

condition detection tapered roller bearing instrument

Design News magazine has organized Design NNCF series bearing News Golden Mousetrap Awards for organizing for over 20 years, Golden Mousetrap Award in recognition of the main purpose of the product design and manufacturing engineering innovation efforts. state detection equipment to win the 2010 "Best Product" design award shows  Bearing Group engineers a rich imagination and innovation.

state detection equipment project manager in this state detection instrument SKF won the 2010 "Best Product" Design Award talked about: "We are delighted to have won" Best Product "design award this honor, this honor is  years longer state detection instrument competitiveness certainly, condition detection tapered roller bearing instrument is a suitable device is just starting out preventive maintenance plan or want to supplement existing condition monitoring. their reading is digital, has established standards or backup data by experienced analysts using instrument for further analysis, as well as 100 backed by years of knowledge engineering. "

There are many moving parts may produce noise

There are many moving parts may produce noise , and some may not rotate the rotation member and the contact member occurs . If the confirmation is four  tapered roller bearing  noise , may be damaged and need replacing.  2. Because the former leads to the failure of both sides working conditions are similar , so even just a bad one , it is recommended to replace in pairs . 3. Relatively sensitive to imports, in any case need to adopt the right approach and the right tools. In storage and during installation , the bearing parts can not be damaged. Require greater pressure pushed , so they need special tools. Be sure to refer to the manual . 4. Installation should be clean and tidy environment, will shorten bearings for printing machine  the tiny particles into the four -row cylindrical roller bearing life. Maintaining a clean environment when replacement is important. Allowed to tap with a hammer , be careful not to fall to the ground ( or similar misconduct ) . Before installation of the shaft and housing should also check condition , even a slight wear will lead to poor fit , thereby causing damage.  Metallurgical quality imported bearing materials was the main factor in the impact of early bearing failure .

Double row cylindrical roller Stainless steel slewing bearings are divided into two forms

Double row cylindrical roller Stainless steel slewing bearings are divided into two forms:
⑴ NN0000 type double row cylindrical roller bearing
The bearing structure is compact, small deformation under load, it is particularly suitable for machine tool spindle bearing. Its outer wall, so you can install the outer ring and the inner components, respectively (with roller and cage), does not limit the axial displacement of shaft or housing, the same size and radial single row cylindrical roller bearings , can withstand greater radial load.
⑵ NN0000K type double row tapered bore cylindrical roller bearings
This kind of bearing structure is compact, small deformation under load and therefore suitable for machine tool spindle bearing. Bearing bore is tapered to micro adjust the radial clearance.
This kind of bearing outer ring without ribs due, it can be installed separately outer and inner components (with roller and cage), does not limit the axial displacement of shaft or housing, the same size and radial single row cylindrical roller bearings compared to withstand greater radial load.

Cylindrical roller bearing cage and riveting

Core Tip: Check the radial clearance by qualified bearing cage assembly can be carried out and the riveting process. Cylindrical roller bearing cage more categories, so roller and cage assembly forms are different. Here are some typical cage assembly methods: 1. Entity halves riveted cage and use this cage
After examination of the Taper bearing radial clearance eligibility can be cage assembly and riveting process. Cylindrical roller bearing cage more categories, so roller and cage assembly forms are different. Here are some typical cage assembly methods:
The use of larger quantities of the cage. It consists of the cage seat and cover composition, with long rivets riveting fastening.
When this cage used in the double wall of the inner cylindrical roller bearing on, then the first cage on the inner ring, and then put together a good first roller mounted on the pocket hole, and finally covered buckle in cage seat, penetration rivets, riveting machine on electric tire tool on riveted.

Given the current legal system is not perfect the socialist market economy

Given the current legal system is not perfect the socialist market economy, and many consumers do not know how to identify the merits of the bearing, or lured by the low price, so that small manufacturers of counterfeit bearings and bearing flooded the market. According to statistics, the current market, small manufacturers of bearings and bearing counterfeit share of over 60% in some areas even more than 80% market share. However, because of its inherent quality and inferior bearing defects and low precision and great harm, giving users a huge loss.
1, due to raw material constraints, shoddy Cylindrical roller bearing hardness less than the national requirements. Deformation occurs during use, etc., which can affect their life, damage to other parts of the machine. In particular, some high temperature bearings and high-speed bearings, bearing hardness directly affect their life and the use of safety.
2, due to the small manufacturers and underground factories dipped fire technical limitations, and shoddy bearing Nga uneven heating temperature dipped in the fire, so that the impact of the precision of the bearing, the deformed and so on.
3, its great technical limitations directly affect the precision of these Luoyang bearing  so that this problem can not be overcome as flawed, but the gap is not only directly harm precision machine parts, also makes bearings become more cumbersome handling things, and even can be installed without, the situation can not be unloaded, direct damage to the machine, delay hours.

Structural characteristics of tapered roller bearings

tapered roller bearings type code is 30000, tapered roller bearings are separable bearings. Under normal circumstances, especially in GB/T307.1-94 "Rolling bearings tolerance" are involved in a range of sizes within the tapered roller bearing outer ring and inner components can be interchanged between one hundred percent use.
The angle of the outer ring and the outer raceway diameter size has been standardized with the same size and shape provides. Not allowed to change in design and manufacturing. To cause the Taper bearing outer ring and inner components available in the world between interchangeable.
Tapered roller bearings are mainly used to bear radial load mainly radial and axial joint load. And angular contact ball bearings, bearing capacity, low speed limits. Tapered roller bearings can withstand axial load in one direction, the shaft or housing to limit axial displacement in one direction.

Cylindrical roller bearings categories

Cylindrical roller bearings equipped with rolling under different number of columns, can be divided into single row, double row and multi-row cylindrical roller bearings and other different structures. Different structures bearing wall position is also reflected in the design. Which are commonly used cylindrical roller bearings have the following forms:
Single row cylindrical roller bearings: single row cylindrical roller bearing are separable bearings, easy installation and removal, two rings can be a tight fit, fix the roller and raceway contact line between the stress concentration can be reduced.
Double row cylindrical roller bearings: double row cylindrical roller bearings are swimming bearings, the Stainless steel slewing bearing installation and removal easy. Two rings are can be a tight fit. Double row cylindrical roller bearings almost not allowed inclination.
Single row cylindrical roller bearings: single row cylindrical roller bearings are separable bearings, easy installation and removal, two rings can be a tight fit, fix the roller and raceway contact line between the stress concentration can be reduced.

Installed in pairs of angular contact ball bearing

Installed in pairs of angular contact ball bearing can bear radial load mainly radial and axial joint load can also be subject to pure radial loads. Tandem configuration can only bear axial load in one direction, the other two configurations can withstand axial load in either direction. This type of bearings are generally manufacturers matching pairs of user submitted after installation preload interference, rings and balls in the axial pre-load condition, tapered bearing he entire group as a single bearing support stiffness and rotation accuracy.

Tapered roller bearings use

Tapered roller Backing bearings bear radial diameter and axial joint load. Load bearing capacity depends on the outer ring raceway angle, angle greater carrying capacity. These bearings are separable bearings, rolling bearing according to the number of rows into single row, double row and four row tapered roller bearings. Single row tapered roller bearing clearance to be adjusted during installation the user; double row and four row tapered roller bearing clearance in the factory according to user requirements is given, not to be user adjusted. Tapered roller bearings have tapered inner and outer ring raceway, Tapered Roller arranged in between. All conical surface projection lines are the same point on the bearing axis together. This design makes tapered roller bearings particularly suitable for combined (radial and axial) loads. Most of the axial load bearing capacity is determined by the contact angle α; α angle increases, the higher the axial load capacity. Angle size calculation factor e; e larger the contact angle the greater the bearing axial load greater applicability. tapered rollers bearings are usually separated type, namely the belt roller and cage assembly of inner components can be composed with tapered conical outer inner (outer) installed separately. Tapered roller bearings are widely used in automotive, mill, mining, metallurgy, plastics machinery and other industries.

tapered bearing distributor in China Analysis

tapered bearing distributor in China Analysis: Schaeffler Group during the financial crisis of this period, due to the acquisition of Continental wrong decisions, resulting in the family business to become a victim of the financial crisis. We learned from the headquarters in Germany FAG bearings, Schaeffler Group, who is currently the Schaeffler Group's creditor banks to give loans for debt can relax its duration, but can also Schaeffler Group (fag) within a specified period in the last few days for the six-month bridge loan of five hundred million euros.
Although Schaeffler Group can slim bearings but the Schaeffler Group's debt owed ​​to banks has reached 12 billion euros, a single monthly interest payments as high as 70 million euros, which is the whole group a devastating impact on the performance of . It is said that the reason given Schaeffler Group creditor banks repay the grace period is to preserve the Schaeffler family last little face. Banks believe that a workable debt restructuring plan is essential anyway. As for the Schaeffler Group and Continental tire company should be separated or how to separate is being weighed by creditor banks, whether because of their merger synergies and cost savings are always questionable.

Generator Sensor tapered bearing FAG determining and monitoring features

Generator Sensor tapered bearing FAG determining and monitoring features, speed, temperature , mileage and noise , so that conclusions about the condition of the wheels , bogies and even railway track . This means that a good combination of the two can . Evaluation of data records is also the rotating Stainless steel slewing bearing and optimize the entire transport and cargo flow and trucks available space control , positioning, tracking and calculating utilization costs , considering the loads, the number of axes , time and distance .

backing bearings damage analysis

backing bearings damage analysis
Dealt with in the short term if the cause, and take appropriate action, bearing damage to the mechanical parts than the average damage is much more complex, bearing damage is characterized by a manifestation of many complex causes, bearing damage in addition to bearing design and manufacture intrinsic factors, mostly due to improper use.
In the course of external conditions because of their quality and the reasons for its carrying capacity, rotation accuracy and friction energy performance will change, when the Roller bearing performance is lower than the requirement was not working properly, it is called bearing damage or failure, bearing in the event of unforeseen circumstances such damage will occur when its machinery, equipment stops, functional damage, and other anomalies.

FAG Taper bearing train control system application

FAG Taper bearing train control system application.FAG engineers are good at innovation beyond the traditional practice . This means that challenged the traditional theory , following extraordinary way and dare to look at things with a different kind of perspective . All of these are emerging understanding of the concept of the premise. Recently , FAG bearings distributor in China from Germany FAG Group understands , FAG latest train control system developed for FAG Generator Sensor Bearing .
FAG bearings based train control system box and generator sensor Roller bearing (GSB) ( as an independent power source ) combined well , for example, truck , FAG 's electronics engineers , are integrated into the software to learn GSB , so formation of a vehicle unit . Coupled with the information processing system , route operators and railway companies can achieve enhanced security and ease of maneuverability truck . GSB in the number of different signals are recorded and transmitted to the central processor . Complete data ( based on train system ) contains train schedules , route , schedule and risk analysis , location, residence time , and the associated temporary variable part .

LYSN bearings

As shaft ring and seat ring and the difference is not very obvious, LYSN bearings the assembly should be careful not to mistake. In addition, the thrust bearing race with the bearing hole should be left between 0.2-0.5 mm gap to compensate for parts processing, the error caused by mounting inaccuracy, when in operation bearing ring center offset, Tapered roller bearing this gap would ensure its automatic adjustment, avoid touching the friction to operate normally. Otherwise, it will cause severe damage to the bearing. atic adjustment, avoid touching the friction to operate normally. Otherwise, it will cause severe damage to the bearing.

tapered bearing

For ease of installation in pairs or groups , Precision Bearing some bearing factory supply in pairs, a group of three and four sets of a group such as bearings, bearing the same batch so that the supply of processing consistency, use bear the load more evenly , additional axial forces cancel each other more thoroughly .This type of bearing and non- separable non-ionic type two, the separation of bearings for restricted installation conditions , requirements from the entire outer or inner ring bearings were installed in order to remove the case , since the separation of angular contact ball bearings are widely used in magnetic motor ,tapered bearing  it is also known as magneto bearings. This type of bearing on the inner ring in the locking variety, can be adapted to higher speeds

lysn-bearing

lysn-bearing steel quenched martensite by the quenching , a small amount of undissolved carbides and the second about 12 % to 14 % of residual austenite . Quenched martensite and residual austenite is stable organization during tempering martensite decomposition volume contraction of the steel , and the decomposition of the residual austenite volume swell of the steel .As the tempering temperature increased, the amount of decomposition of the residual austenite increases , the hardness required to ensure the process conditions, Slewing Bearing an appropriate increase in the tempering temperature , the residual austenite decomposition into the larger specific volume of martensite organizations can work volume increases accordingly 

backing bearings

Three chemical deposition method For dimensional tolerances beyond the design standard bearing parts , backing bearings chemical deposition method can be used to save . The principle of chemical deposition through a variety of chemical raw materials of the chemical reaction of the surface of the part evenly certain thickness of metal coating , by attaching the metal layer and tempered to ensure hardness of the original parts and mechanical performance of the same . Chemical deposition only increased the size of the parts , without changing the shape of the part tolerances , the tolerance for dimensional tolerances of parts , Precision Bearing by chemical deposition is an effective way to save , at present , the maximum thickness of up to about 0.1mm unilateral deposition .

split tapered roller bearing

Speaking aircraft split tapered roller bearing , everyone will say , the type of bearing so much, so many brands , but only set the body on the plane and wing bearing is provided directly by the supplier of bearings , the other is through the system equipment providers , Why must choose the bearing it Despite this , but we still can confidently tell you that the aircraft landing gear wheel bearings will choose bearings.Here bearing center Shanghai , and we analyze, we all know , Timken bearings originated in Mr. Henry Timken as a conical roller bearing axlethat Timken tapered roller bearings , the company thus established , Timken Company is lysn slim ball bearing (TRB) , the inventor and patent holder. The aircraft 's landing gear wheel bearings is tapered roller bearings.

Tapered Roller Bearing

tapered roller bearings are separable bearings, the inner and outer rings have a tapered raceway. This kind of bearing according to the number of columns loaded roller into single row, double row and four-row tapered roller bearings, such as different types of structures. Single row tapered roller bearings can bear radial load and axial load in one direction. When the bearing radial load,taper bearing will produce an axial force component, so when you need another can withstand the axial force in the opposite direction of the bearing to be balanced

Luoyang bearing new policy

Luoyang bearing the company's joint venture in China, but also adopted a new strategy. In the joint venture, cooperation, originally a joint venture  Northwest bearing plant are Luoyang bearing‍ controlled by foreign capital into foreign-owned instance, also occupy a relatively good market share foreign companies are very concerned about the development of new products bearing to seize the commanding heights of China bearing technology. The Luoyang bearing both companies viewed as competitors, but also be seen as partners. Cylindrical roller bearing‍  chose China bearing competitive enterprises, including several large companies and with the development momentum of the  As a result, domestic and international competition, international competitiveness of domestic competition will be more intense, the situation will be more complicated.

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The nature of the backing bearings

backing bearings are used particularly thick outer ring to form a group to be mounted on stationary support roller shaft becomes. Pressure on the work rolls through the intermediate rolls to the support rollers and transmitted to the rack system via the saddle. Generally used for multi-roll cold rolling mill equipment, can also be used on other occasions, the backing bearings Multi-row cylindrical roller bearings, bearing itself required accuracy is very high, tapered rollers especially after the elimination of the radial clearance to the inner diameter of the outer diameter section height (T value) is particularly important, in each axis, T values ​​are controlled within 0.005mm, this requires precision bearing components must be high requirements rotator with high runout accuracy performance, high-speed rotation and friction and Little change is more friction mill bearings

bearing into ball bearings

Bearings are modern machinery and equipment is an important component. Its main function is to support the mechanical rotating body,crossed roller bearing reducing its coefficient of friction during movement, and to ensure the accuracy of its rotation.
According to the different nature of friction of moving parts, bearings Rolling and plain bearings can be divided into two categories. Wherein Rolling been standardized, serialized, but compared with the sliding bearing its radial dimension, vibration and noise is large, the price is higher.
Rolling generally consists of an outer ring, inner ring, rolling elements and cage four parts. According to the shape of the rolling elements, bearing into ball bearings and roller bearings two categories.

Bearing life

Under certain load, the number of revolutions or hours before the experience of bearing pitting in the event, called the bearing life.
Life of rolling bearings of the number of revolutions (or in hours of work under a certain speed) Definition: In this life bearing within, High Speed Backing Bearing initial fatigue damage should occur (spalling or defect) on any of its rings or rolling element bearings. However, both in laboratory tests or in actual use, we can clearly see, the appearance in the same working conditions of the same bearing, the actual life different. There are also several different definitions of bearings "life", one of the so-called "working life", which represents the actual life of a bearing can be achieved before the damage is usually not damaged by the wear caused by fatigue, but It is caused by wear and tear, corrosion, seal damage and other reasons.
To determine the standard bearing life, the bearing life and reliability linked.
Due to manufacturing precision, uniformity of material differences, even if the same material, the same group of the same size bearings, used under the same working conditions, their life is not the same length. In terms of the statistical life of a unit, relative to the longest life is 4 units, the shortest 0.1-0.2 units, the ratio of the longest and the shortest life of 20-40 times. 90% of the bearing does not produce pitting, the number of revolutions or the number of hours after which called bearing rating life.

Needle roller bearings

With thin and long needle bearing roller (roller length of 3 to 10 times the diameter, the diameter of generally not more than 5mm), therefore radial structure is compact, its diameter size and load capacity and other types of bearings, outer The minimum diameter, especially for radial bearing installation dimensions restricted structure of needle roller bearings according to different occasions, can be used without an inner ring of the bearing or needle roller and cage assembly,  paired tapered roller bearing this time bearing mating journal surface and the housing bore directly on the surface as the inner and outer rolling surface of the bearing, in order to ensure load capacity and operating performance and have the same bearing rings, shaft or housing bore raceway surface hardness, machining accuracy and surface quality should be bearing rings. Uses a combination of roll needle bearing is a bearing unit to the heart needle roller bearings and thrust bearing components portfolio, its compact structure, small size, high precision rotation, can withstand high radial load at the same time bear certain axial load. And product mix diversity, adaptability, easy to install. Combined needle roller bearings are widely used in machine tools, metallurgical machinery, textile machinery and printing machinery and other machinery and equipment, and mechanical system design allows highly compact and nimble.

Luoyang bearing should pay attention

1, surface cleaning: cleaning must be in accordance with the nature of the surface rust and the prevailing conditions, the appropriate method is selected. Commonly used solvent cleaning, bearings for sendzimir mills chemical treatment and mechanical cleaning method to clean. 2, Luoyang bearing the surface was cleaned by washing by filtration and dried in the drying compressed air, or a dryer 120 ~ 170 ℃ is dried, dry clean gauze can also be used. Second, anti-rust oil coating method: 1, soak method: Soak in some small items using anti-rust oil, allowed a layer of rust on the surface adhesion method grease. The film thickness can be achieved by controlling the temperature or viscosity rust preventive oil. 2, brush or spray for NA immersion outdoor construction equipment or special shape products, Thin section bearing  should pay attention when brushing does not produce accumulation, but also pay attention coated to prevent leakage. 3, spray some large rust-proof material coated with oil immersion method can not be used, Luoyang bearing usually with about 0.7Mpa pressure spraying compressed air filter in the air cleaner place. Spray application of anti-rust oil or solvent dilution thin rust oil, but it must be used to improve fire safety and labor protection measures.

With sensor wheel hub Tapered roller bearings units

As more and more cars equipped with ABS, ABS function is also growing. To solve the wheel speed sensor wheel speed to provide a signal to the ABS costs exist, installation and signal quality and other aspects of the development of the integrated ABS pulse generator hub bearing unit. Wheel split tapered roller bearing units with ABS sensors, including flanges, ring gear rotating body, Tapered roller bearings the seal assembly and hub with ABS sensors on the wheels, ABS sensor ring magnet rotating body suit on, and with the phase complexes; rotating body and a ring gear fixed to the flange was connected. ABS sensor includes a housing, the magnet and the coil, Slim-bearing the ring magnet fitted over the rotating member, the rotating member fitted with the ring magnet; coil via a signal line and a connector. Rotating body and flange ring was spline connection. End face is provided with a flange with bolt holes directly with suspension, brakes and tires connections. precision bearings in the flange has splines can be used in conjunction with a constant velocity drive shaft. The utility model is beneficial effect: Tapered roller bearings the structure to replace the original car steering knuckle, wheels, bearings portfolio, both the three functions are integrated, but also greatly reduces the size of the original structure, reducing the weight, but also greatly improving the reliability.

china bearings of grease to make it play a role in rust

Before removing wheels, wheel maintenance should do the preparatory work, the car parked and set up axles, in order to ensure the maintenance of security operations. (1) Remove the hub shaft head decorative cover, dust cover; (2) Remove the wheel nuts and tires, be careful not to bruise the tire bolt threads. If disc brakes, the brake should be removed, and then used pliers to remove the lock ring or locking pin. (3) china bearings with a special tool to remove the wheel hub; (4) scrape bearings, journal and hub cavity of the old grease, cleaning wheel china bearings and journal with detergent and wipe dry with a cloth, wipe with a cloth wheels last cavity. (5) Check the wheel bearings and bearing races, found cracks, fatigue spalling and loose roller bearings and other phenomena, replace bearings. If you find pitting on the bearing race, it should replace the bearings. When cope with the situation (6) Check the bearing bore and the journal, with the gap should not exceed 0.1Omm measuring journal, should be in the upper and lower parts of the vertical ground (where the largest wear parts) measurements. slim bearings used with the gap exceeds the limit, replace the bearing, so back to normal with the gap. Burr is not allowed to play, pitting the journal to narrow the gap. (7) Upon completion of all parts meet the requirements, the inner bearing grease after release hub. When (8) grease the bearing cavity attention should be squeezed into the bearing grease until grease to date to emerge from the other side of the bearing. In the hub and shaft cranial cavity Apply a thin layer of grease to make it play a role in rust. Note that the hub cavity do not apply too much grease, otherwise it will affect the cooling and braking. (9) the hub and the outer bearing back onto the journal, hand-axis head adjustment nut, and then use the required shaft torque wrench to tighten the adjustment nut. After tightening the nut, Taper bearing turn the wheel a few times to be around to see the bearing installation; on the other hand, by turning the bearing and seat properly fit. At this time bearing tightness appropriate wheels to rotate freely and not feel the axial clearance. (10) Finally, in order to install the locking plate, fixing nut, tires, china bearings dust cover and decorative cover and other parts. (11) wheel bearings adjusted, with some mileage (about 1Okm), stop and check for swab touch wheel temperature, if fever, is caused by the bearing adjustment too tight, should be re-adjusted appropriately relaxed bearing tightness.

Luoyang bearing the use of the environment

Luoyang bearing the use of the environment: according to the size, accuracy of location and conditions of use and environmental conditions, with the right bearing is the premise to ensure the bearing life and reliability of the. 1, allowing speed: correct installation, Luoyang bearing lubrication good environment, allowing for 0.3-0.5 times bearing limit speed. Under normal circumstances, the limit of 0.2 times the speed of the most desirable. 2, using the site: combined load of Luoyang bearing for radial and axial radial load to bear mainly on, precision bearings usually with two sets of angular contact ball bearings are used, primarily in the car front and rear wheel, a driving bevel gear, gear, reducer and other transmission parts. 3, allow the tilt angle: tapered roller bearings are generally not allowed to tilt axis relative shell hole, such as tilt, less than 2'. 4, slim bearings allow the temperature: under normal load, and the lubricant has the advantages of high temperature resistance performance, and full lubrication conditions, allowed to work in -30 ℃ -150 ℃ temperature generally angular contact ball bearing.

Tapered roller bearings matters needing attention

High speed rotating note: Tapered roller bearings at high speed, especially the speed of approach or exceed the speed limit size table records, should pay attention to the following matters: (1) tapered bearing supplier the use of precision bearing (2) analysis of bearing internal clearance (bearing internal clearance considering temperature rise reduction) (3) the analysis material of cage type (for high speed rotation, Tapered roller bearings suitable for copper alloy or phenolic resin cutting holder. Crossed-roller-bearing is also suitable for synthetic resin forming high-speed rotating cage) (4) analysis of lubrication (which is suitable for lubrication of high speed rotating, spray lubrication, oil mist lubrication and oil air lubrication, lubrication).

The speed limit of china bearings

Angular china bearings speed increased restrictions is mainly because of the angular contact ball bearing friction fever induced by internal temperature, when the speed reaches a certain value, china bearings due to burn and cause cannot continue rotating angular contact ball bearing. The speed limit of angular contact ball bearing is the frictional heating does not cause burns and continuous rotation of the boundary values. Therefore, angular contact ball bearing limit speed depends on the china bearings type, size and accuracy and lubrication, lubricant quality, cage and type of material, Slewing Bearing loading conditions and other factors. All kinds of angular contact ball bearings with grease lubrication and oil lubrication (oil bath lubrication) speed limit when contained in the angular contact ball bearing size table, its numerical representation standards for the design of the angular contact ball bearing under general loading conditions limits when the rotation speed value.

Wheel Luoyang bearing code representation

Bearing Code by simply code and post code form.Fundamental code is divided into three parts, Luoyang bearing the first part of the code structure types and drive types, central rolling diameter (for more than two rows of rolling element bearings for maximum rolling element diameter), Luoyang bearing heart weight rear rolling circle diameter (for two rows above the rolling bearing body weight for maximum heart rolling circle diameter) 1, structure type code according to the rules in Table 1. 01 four-point contact ball bearings; 02 double Reducing ball bearings; 11 interspersed cylindrical roller bearings; 13 with three-row cylindrical roller bearings. 2, Slewing Bearing transmission type code according to the rules in Table 2. 0 Toothless; an outer involute cylindrical gear teeth smaller modulus; 2 Luoyang bearing involute cylindrical gear outer teeth larger modulus; 3 involute cylindrical gear teeth within a smaller modulus; 4 involute cylindrical gears inner teeth larger modulus. 3, the fundamental rules of the code compiled Fundamental code layout, the structure type code and transmission type code writing for the front, middle and rear with between. "" Separated.

Tapered roller bearings have three races

Three-row roller wheel Tapered roller bearings have three races, up and down and radial raceways each separately, so that each row roller load can be determined exactly. Be able to withstand a variety of loads, is four products in one of the largest carrying capacity, axial and radial dimensions are large, solid structure, especially for applications that require larger diameter heavy machinery, such as bucket wheel excavators, tapered roller bearings wheel cranes, marine cranes, port cranes, steel operating units and large-tonnage truck cranes and other machinery. Lightweight wheel bearings slewing ring has the same general structure, light weight, flexible rotation. Widely used in food machinery, filling machinery, environmental protection machinery and other fields. Single-row four point contact ball bearing turntable composed by two races, compact and circular raceway ball four point contact. Mainly used truck cranes, tower cranes, excavators, hammers, engineering vehicles, Stainless steel slewing bearing radar scanning equipment to withstand the overturning moment, vertical axial force, Tapered roller bearings the level of mechanical inclination force. Single row cross roller wheel bearings, composed by two seat, compact structure, high manufacturing precision, small assembly space for installation high precision roller 1: a cross arrangement, can withstand the axial force, dumping turning torque and greater radial force, which is widely on transport, engineering machinery and military products are used.

Single row cross roller wheel china bearings

Wheel bearings can withstand a large axial load, radial load and overturning moment, comprehensive load, set support, large bearing rotation, transmission, fixed and other functions in one particular structure. Single-row four point contact china bearings turntable from the inner ring, china bearings outer ring, ball, isolated block of four major components, compact, light weight, ball four point contact with the circular rolling road, can withstand the axial force, radial forces. Rotary conveyors, welding operation machine, small cranes and excavators and other construction machinery can be selected. Double-row ball bearing turntable has three races, bearings for printing machine ball and isolation block can be directly discharged into the upper and lower raceway, according to the situation by force, arranged up and down two rows of balls of different diameters. This assembly is very convenient, carrying angle of both the upper and lower circular raceway is 90 °, can withstand large axial forces and tilting moments. When the axial force is greater than 0.1 times the radial force, roller must be specially designed. Double-row ball slewing bearing axial, radial dimension than the larger, structural tightening. Thin section bearing Especially for applications that require above average diameter of tower cranes, truck cranes and other handling machinery. Single row cross roller wheel china bearings, composed by two seat, compact, light weight, high manufacturing precision, small assembly space for installation high precision roller 1: a cross arrangement, can withstand axial force, tipping moment and larger radial force, is widely on lifting the transport, engineering machinery and military products are used.

The key technology of Luoyang bearing

Design and Analysis: Analog design experience is still the main study stress analysis and load spectrum is almost blank. Technical difficulties which are the requirements for spindle bearings trouble-free operation of 13 * 104h or more, and have more than 95 percent reliability; Luoyang bearing gearbox bearings for high load capacity design a high failure rate and so on. Luoyang bearing Materials: different parts of the bearing using different materials and heat treatment, such as increased yaw and pitch bearings 40CrMo steel at low temperature (ambient temperature -40 ℃ ∽-30 ℃, the bearing operating temperature of about -20 ℃) ​​Cylindrical roller bearing and other mechanical impact energy heat treatment method performance control surface induction hardening of the hardened layer depth, surface hardness, soft bandwidth and surface cracks; gearbox bearing equivalent foreign STF, HTF steel research and control its optimum content of residual austenite research; Luoyang bearing spindle bearing quality steel in the domestic vacuum degassing surviving in the case of a gap, Taper bearing using ESR carburizing steel ZG20Cr2Ni4A manufacturing. Anti-corrosion and sealing. Yaw and pitch bearing special clearance requirements. Yaw and pitch bearing raceways grinding. Spindle bearings and gearbox bearings precision machining. Transmission bearings maintain improved design frame. Testing and so on.

Analysis of Tapered roller bearings area

In roller bearings generally operate only part withstand load, while the area where this part of the roller bearing area we call the Tapered roller bearings . The bearing load size, the size of the clearance operation will have an impact on bearing area. If the bearing area is too small, tapered roller bearings the roller in the actual operation is prone to slippage. For the wind turbine gearbox, if the spindle is designed with double Tapered roller bearings support programs, then theoretically only torque is transmitted to the gear box. In this case, after a simple mechanical analysis, we find that the planet carrier supporting the bearing load is relatively small, precision bearings so the load zone of the bearing is often relatively small, roller prone to slipping. In the design of wind turbine gearbox carrier support bearings generally use two single row tapered roller bearings or cylindrical bearing two full programs. We can properly preload tapered roller bearings or cylindrical roller bearings reduce clearance methods to improve the bearing area.

china bearings lubrication analysis

Wind speed gearbox input shaft is generally 10-20 rev / min, due to the relatively low speed, [1] which is leading to the input shaft china bearings carrier support bearing oil film formation is often more difficult. The role of the film is when the bearing operation to separate two metal contact surfaces, avoid direct metal to metal contact occurs. china bearings  can introduce a parameter λ to characterize the effect of lubricating the bearing (λ is defined as the film thickness and the roughness of the two contacting surfaces and the ratio). If λ is greater than 1, indicating that the thickness of the metal film sufficient to separate the two surfaces, the lubricating effect is good; if λ is less than 1, then the thickness of the oil film can not completely separate the two metal surfaces, the lubricating effect is not ideal. Cylindrical roller bearing  case of bad operation of the lubrication. Because wind power gearboxes are generally used ISOVG320 viscosity lubricant circulation, china bearings so if you find λ is less than 1, we generally can only be improved by reducing the lubricating effect of the roller bearing raceways and roughness. In addition, the gear box design, the planet carrier bearing support end to try to avoid bearing size is too small, the actual application analysis, we found that even life to meet the conditions, this design will lead to a small bearing line speed is very low, the film more can not be formed.

Luoyang bearing huge prospects

In recent years, with its excellent performance engineering plastic products get more and more widely used. Engineering has broad application prospects in Luoyang bearing, plastic bearings are being more and more users.
Because of engineering plastics Luoyang bearing with excellent self-lubricating, wear-resistant, low friction, and special seizure resistance and other characteristics, can work even in case of poor lubrication conditions, so use it as a bearing material is ideal. Currently, plastic bearings development abroad is very fast, the wider range of applications. The plastic bearings in China is still in its infancy, in the production of raw materials, product applications are relatively lacking. Precision Bearing According to incomplete statistics, the parties concerned, the past five years, the domestic general PC, POM, polyamide, thermoplastic resins, modified polyphenylene ether five engineering plastics and market demand has maintained a high growth of 30.3%, while China Luoyang bearing with plastic mainly rely on imports. Therefore, the relevant plastics businesses, seize market opportunities related to the development of plastic bearings, its market prospects are very huge.

The key to winning Tapered roller bearings

Product technology and quality level of our Tapered roller bearings are ideal for developing and newly industrialized countries, tapered roller bearings in Latin America, Africa and other developing countries, bearing exports account for only about 5% of total exports. Critical period of gradual transition to industrialization of developing countries in the coming years it is, the demand for bearings exponentially. Our bearing products and technologies to developing countries is expected to achieve a breakthrough. And in recent years, China's household electrical appliances, motorcycles, generators and other electrical products exports in Latin America and Africa have increased greatly, so these areas has become Cylindrical roller bearing most potential market bearing exports should increase efforts to develop .
With the integration of domestic and foreign markets, precision bearings our Tapered roller bearings bearing industry has gradually integrated into the international trade family, to participate in broader international competition bearing market. In the first half of this year, China's exports to the world bearing 129 countries and regions, earning $ 503,068,100, an increase of 26.40%. Many of our businesses have been bearing production will be exported as an important way to increase efficiency, improve visibility and competitiveness, and sustainable development. With competition intensifying international market, how to find the opponent in the market, "Gold," dug "gold" has become the key to winning.

china bearings market needs

china bearings because of the future market for quality, noise and bearing life increasingly high requirements, thus bearing the same bearing steel industry has put forward higher requirements. For example, precision machine tool spindle bearings, precision bearings aerospace, computers and video recorders and other special bearings, these products Thin section bearing are very high demands on the bearings. But now the quality of steel bearings made in kind is not stable, noise and increase the life and performance indicators of the impact of the bearings, causing internal and surface quality of products made in China and developed countries bearing significant gaps. For this reason, some domestic mills china bearings to meet the needs of the market, is to further develop scientific and technological activities. china bearings Five steel smelting company based in optimizing the quality of the conduct silver steel bar peeling technology research and analysis of surface defects and quality control, research and development of high-quality bearing steel; development of high-tech and high reliability and passenger locomotives bearing truck bearing steel, adapt bus speed requirements.