How to removing bearings

Bearing disassembly is regular maintenance performed bearing replacement. After the demolition, if continued use, or still need to check the status of the bearings of its demolition should be careful when installing the same. Careful not to damage the excavator bearing of the parts, especially the interference fit bearing disassembly, operation difficult.
Designed according to need removal tool is also very important. When removing, according to the drawings research demolition methods, with the condition the order to investigate the bearing, in order to achieve foolproof demolition job.
Removing the outer ring of the outer ring of the interference fit, prior to the housing of the outer circumference of the extrusion screw with a few screws, tighten the screws evenly on one side, while the demolition. These usually cover screw holes blind plugs, tapered roller bearings and other separation-type bearings in a housing block on the shoulders set out several incisions, using pads, with press demolition, or tapping the demolition.
Removal of the inner ring, you can use the press pull easiest. At this point, we should pay attention to your inner bear its pullout. Furthermore, as shown in the drawing tools are mostly La use, regardless of the kind of fixtures, it must be firmly stuck in the inner sides. To do this, you need to consider the size of the shaft shoulder block, or research on machining grooves in the shoulder block to use drawing fixtures.
Large cross roller bearings inner ring disassembly by hydraulic method. The hydraulic pressure to be set through the bearing hole, so that the drawing is easy. Width of bearing the hydraulic method and drawing fixtures and use, disassembly operations.
Cylindrical roller bearing inner ring disassembly can take advantage of induction heating. Local heating in a short time, so that the inner expansion after drawing methods. You need to install a large number of this type of bearing inner ring of the occasion, also uses induction heating method.
I hope shortly before installation, just open the bearing package. General grease lubrication, not clean, direct filling grease. Lubricating oil, general do not wash, however, the instrument used or high-speed bearings, etc., use oil washed clean, removing the coating on the thrust roller bearing

 of the rust inhibitor. Remove the bearing rust inhibitor, rust, it can not be placed aside. Furthermore, a grease-enclosed bearing has not cleaned directly.
Bearing installation method, because the bearing structure, with the condition varies, generally, due to multi-axis rotation, so the inner need interference fit. Cylindrical bore bearings pressed into the multi-purpose presses, or by hot charging methods. Cone of the occasion, mounted directly on the tapered shaft or sleeve installation.
When mounted to the housing, and more generally with the clearance, the outer ring had a surplus quantity, usually pressed into the press or shrink fit method also has cooling installation. With dry ice as the coolant, shrink fit installation of the occasion, moisture in the air will condense on the surface of the bearing. Therefore, the need for appropriate corrosion protection.

Precision machine tool spindle bearings

Spindle bearings are precision machine tool spindle bearings and similar devices, its work to ensure the accuracy and precision machine tool performance.
Series spindle bearings
series ball screw support bearings with angular contact thrust ball bearings,
series bearings include: open bearing, sealed mobile crane bearing series.Ball screw bearings, with high stiffness, high performance, increased sealed series, complete model, widely used.
series spindle bearings Specialty
1, high-performance design
High rigidity: a few more balls, 600 contact angle, stiffness.
Long life: the use of long-life, high reliability EP steel, life expectancy is three times the normal bearing steel SUJ2's.
2, contact Sealed Bearings: high reliability, high dust resistance
Sealed bearing dust resistance, grease easily leak. And the use of light-contact seals, bearings torque at low, low heat.
3, installation convenience
Open three row roller slewing bearing: it can provide the product has been greased and shorten the installation time.
Sealed bearings: already filled with grease, and different colors on the back and front of the ring, for easy identification direction.
Ball screw support bearings with angular contact thrust ball bearings series of open, sealed bearing series.
Bearing is an important foundation for all types of machinery and equipment parts,its precision,performance,longevity and reliability of the host precision , performance,longevity and reliability play a decisive role . Mechanical products, bearings are precision products , not only requires a comprehensive support mathematics,theoretical physics and many other disciplines , and materials science , heat treatment technology , precision machining and measuring technology , digital technology and efficient numerical methods and powerful computer technology and many other disciplines to serve , so the thrust ball bearing

 is also a representative of the national scientific and technological strength of the product.

Bearing Science & Technology precision bearings: for wind turbine "core"

Core Tip Bearing Science & Technology Precision Bearing heavy machinery industry projects a total investment of 438 million yuan, with a total construction area of ​​56,300 square meters. Year after completion of the wind turbine can produce for supporting the yaw bearings, pitch crane bearing, gearboxes and other industries for all types of large, large bearing 12,600 sets.
"312 meters long, 57 meters wide, with a total area of ​​18,000 square meters. If you press area calculation, our workshop, deserved to become the first Chinese bearing industry." The 4th, LYHY Bearing Science in advanced manufacturing industry cluster When Technology Precision Bearing heavy machinery industrial projects construction site, division general manager of a major type someone led the reporter to visit just built a huge workshop said proudly.
In this huge workshop in the future to specialize in the production of various precision bearings.
As the only national comprehensive research institute a class of China's bearing industry, Bearing Science & Technology is principally engaged in the aerospace, aviation and machine tool precision bearings, offshore crane bearing sets of special ultra-fine grinding equipment, bearing special testing equipment, high-speed electric spindle bearings and other "high, Fine, research sharp "product research, development, production and testing.
According to reports, the smallest bearing diameter shaft research technology manufactured only 0.5 mm, the largest bearing diameter reached 6 meters. Moreover, Bearing Science & Technology has mastered the core technology of wind power bearing, heavy machinery and other large truck mounted crane bearing

 formed with independent intellectual property rights in product design, production processes, testing and test technologies, products reach the world advanced level.
It is in this context, in order to seize the strategic opportunity for the country to develop wind power and other green energy, Bearing Science & Technology in August 2008 launched a decisive Precision Bearing heavy machinery industry projects, its goal is to provide wind turbines ancillary products, bigger and stronger bearings industry. Currently, the project has been completed a project for all civil construction, more than 60 sets of processing equipment has been installed in place third.Zhangjun Jiang said that the workshop will feature machining area is divided into the car, grinding area, gear machining area, heat treatment and other regional and several large drilling area. Project Phase Spring officially put into operation after 2010. A project put into production, annual profit of 93.46 million yuan, mechanical manufacturing and related industries have a significant role in boosting the demonstration. Phase II will be completed by July civil tasks.

Application of the tilt sensor on heavy machinery

Tilt sensor applications is already very widespread, many machines and electronic devices are in use above the tilt sensor, tilt sensor can be used in heavy machinery, or above, the following Chinese sensors trading network come to you specifically tell us about it.Now more and more engineering machinery and equipment to the electro-hydraulic system transition from traditional mechanical hydraulic system, especially for the wide application bus replacement and upgrade the efficiency of construction machinery products provide a very good technology platform. Such as pavers, graders, excavators, lifts, cranes, etc., to achieve automatic control, you need to tilt the body itself and the implementing agencies to measure, but security is also widespread attention. For example, the verticality of rotary drilling rig mast rig measurements and prior work, the need for the entire mechanical equipment itself to adjust the attitude and want to reach the level of state; lifting deck crane bearing boom angle and excavator digging depth control, etc. angular measurements need to be controllable.
Shuo Feng Technology as a leader in the field of angle measurement for the construction machinery industry offers a variety of measurement accuracy, applications, input / output, and the apparent size of the angle sensor products, including a variety of output signals RS485, RS232, SPI, analog output, etc. / interface. Meanwhile Luoyang Huayang Special Heavy-Duty and Large Bearing Manufacturing Co.,ltd. To meet the diverse and specific technical requirements, provide orientation when drilling deep hole measurement products and complete applications as well as applications of vibration detection.
The angle of the crane bearing boom chassis leveling measurements Crane with a variety of models, do a lot of weightlifting work every day around the world, but unfortunately often the accident, when the load could cause the tilt or turn, some accidents are devastating. The investigation of the accident many conclusions drawn, a consensus is that if an accident near the former operator to get some form of warning, most of the accidents can be avoided.
To reduce accidents, manufacturers developed a number of safety systems: safety load monitors, these sophisticated real-time monitoring system to change marine crane bearing

. In order to make a required measurement is critical to the functioning of the system is a boom angle, which is measured by the tilt sensor, which is the typical inclination sensor applications.
Cranes on the chassis before work to reach the level of the entire state apparatus, on the one hand to ensure safe operation, on the other hand, the maximum tonnage lifting. This is achieved by a dual-axis tilt sensor to measure the inclination of the chassis in all directions, while the angle of the output signal to the PLC to drive the hydraulic ram to achieve the chassis level. Angle measurement used to calculate the boom lifting height and make the entire device to prevent the occurrence of excessive lifting overturning.

Bearing Maintenance

   Bearing damage for many reasons: beyond the originally expected load, the non-effective sealing, tight fit caused by too small bearing clearance and so on.Broadly speaking, one-third of deck crane bearing damage due to fatigue damage, third is due to poor lubrication, the third is due to contaminants from entering the bearing or improper installation process. Fatigue is the result of the shear stress occur periodically formed on the surface of the load. After a period of time, the shear stress will lead to microcracks, and gradually extends to the surface. When the rolling elements through these cracks, the crack block off there, forming a so-called peeling phenomenon. Increases with the increase in the stress and crack the block, resulting in the spread of the peeling area. The damage in the form of process usually lasts a very long time, and its stage is visible increase in noise and vibration time. Therefore, before the complete destruction of the ferris wheel bearing, which provides the user sufficient time to find and replace it. For the Port of large lifting equipment, such as shore container cranes, gantry cranes, the main lifting mechanism, trolley mechanism bearing replacement cycle is generally 25000h, gantry crane traveling mechanism, bearing replacement cycle is generally luffing mechanism 6300 ~ 10000h. The specific time depending on the bearing replacement actual usage and maintenance of the state.
    Axis skew can cause various parts of a machine malfunction, especially for large port lifting equipment, the basic principles of its institutions are from the motor to the gear box input torque increases and then output to the respective transmission parts. Therefore, the strips run institutions in various parts of the center line adjustment is particularly important, the right to the heart of the work is preventive maintenance work is a very important part. Basic does not mind, there are two types, one for the parallel-type, a different perspective of the formula. However, the actual situation is usually a combination of these two types. Skewed axis will produce a moment. This moment will be the bearing in the drive unit and the driven unit, reaction force is generated. Because does not mind the increased load of about 20% to 50% will reduce bearing life.
    Another consequence of that is the seal wear, with the resulting contaminants into the bearing or oil spills, the crisis has brought damage wind power bearing

.Therefore,the correct working of the heart can be improved bearing and seal life. For high energy consumption harbor large lifting equipment, can reduce vibration, noise and energy consumption. Centerline adjustment often make use of dial indicators and other tools. Exhaust ports for loading large lifting equipment motors, gear boxes and other transmission parts, the general will face runout control within 0.1mm, radial runout controlled within 0.05mm.

Wind power bearings

    Wind, this ancient and clean energy is becoming one of the world's fastest growing energy source. In situations of booming global wind industry , Luoyang Huayang Special Heavy-Duty and Large Bearing Manufacturing Co.,ltd.has become a professional manufacturer of wind power bearing design, development, manufacture slewing ring bearings in one of the industrial manufacturing company. The company is widely used at home and abroad advanced technology slewing ring bearing products, standards, process methods,manufacturing a variety of forms and series of slewing ring bearing products are widely used  in engineering, construction, mining, metallurgy, shipbuilding, ports, petroleum, chemical,
light engineering, environmental protection, aviation, wind power, military and
instrumentation industries, products are exported to Germany, South Korea, the United States, Japan and Southeast Asia and other countries.
    In roller bearings generally operate only part withstand the load, and the area where this part of the roller bearing area we call the bearing. The thin wall bearings load size, the size of the clearance operation will have an impact on the bearing area. If the bearing area is too small, the roller in the actual operation is prone to slippage.
    For wind power gearbox, if the spindle is designed with reali slim bearings

 support programs, then theoretically only torque is transmitted to the gearbox. In this case, after a simple mechanical analysis, we find that the carrier supporting the bearing load is relatively small, 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 roller bearing two full programs.

deck crane bearing Deck crane

Set machinery in the ship deck. This compact crane structure, the ship has more deck area available, less impact on the bridge upstairs sight. Deck cranes bearing easy operation, mobile crane bearing‍ high working efficiency, and flexibility, before the job is no tedious preparatory work widely.

Deck cranes commonly used fixed rotating cranes, mobile cranes and gantry cranes rotation. Transmission power transmission and electricity - two hydraulic drive.

Fixed rotating crane

This crane most widely used, can be used alone or self aligning bearing‍ in pairs in the starboard job. Weight is generally 3 to 5 tons. In the multi-purpose boat, requires a single crane can lift a 20 ft container, twin-lift can lift 40 feet container (30 tons), its starting weight of up to 25 to 30 tons.