hematite magnetic separator motor mechanical failure and maintenance

Mining equipment industry continues to develop, Henan Yu made what in such a competitive market to survive until now it? Of course, we have our own conduct fundamental. Henan Yu hair beginning to end, a customer-centric, from the customer s point of view to production and manufacturing equipment, our equipment conscience to speak, even in the mining industry, give birth to a low ebb in the case, we still have customers to vendors talk! Which is is the reason for it, because our equipment reassuring, service reassuring, used after not regret it.

Separator is used in the re-use powdered iron removal mitochondria, etc., magnetic separator is widely used in recycling, timber, mining, ceramic, ch emical, food, and other workshops for particle size less than 3mm magnetic iron ore, pyrrhotite, roasted ore, ilmenite and other materials wet magnetic separation, but also for coal, non-metallic minerals, building materials and other materials, iron work, is the industry s most widely used, high versatility One aircraft. Below you about magnetic separation equipment manufacturers to motor common mechanical faults and maintenance description:
magnetic drum separator
1 stator and rotor core troubleshooting: stator and rotor are made of silicon insulated from each other quartet built, is part of the magnetic circuit of the motor. Stator and rotor core damage and deformation mainly caused by the following aspects.

① excessive bearing wear or defective assembly, resulting in the stator and rotor rubs, surface damage to the core, silicon steel and cause short-circuit, the motor iron loss increa ses, the motor temperature is too high. Then the application filing and other fine deburring tool to remove silicon short, clean up after applying varnish and heated drying.
suspension magnet
② Remove the old winding when the force is too large, so Pirates slot skew and flared. At this point the application needle nose pliers, wooden hammer and other tools to be trimmed so bad tooth reset, and there is a gap in the bad reset of silicon added between green shell paper, plastic, wood and rigid insulation material.

③ due to damp and other causes of iron surface rust. Time required sanding clean, clean up after applying varnish.

④ heat generated around the burning core group of grounding or bad teeth. Available tools such as a chisel or scraper clean and remove sediments will melt, coated with insulating paint drying.

⑤ bonding between the core and bas e loose, original screws can be tightened. If the screws fail, the base unit can be re-positioning holes drilled and tapped, tighten the screws.

2 Bearing Troubleshooting: shaft through the bearing support rotation is the heaviest part of the load, and is easy to wear parts.

① Troubleshooting

Operation check: Rolling starvation, you will hear "Gulugulu" sound; If you hear no continuous "Terrier Terrier" sound, may be bearing rims rupture. Bearing mixed with sand and other debris or bearing parts with mild wear, it will produce a slight murmur.

INSPECTION AFTER REMOVAL: first look at the rolling element bearings, inner and outer rims for damage, corrosion, scars, etc., and then hand pinch the bearing inner ring, and to settle bearing in one hand by pushing just outside the circle, if the bearing good and outer rims should be smooth rotation, vibration and rotation without obvious catching phenomenon, stalling t he outer rim without setbacks. Otherwise Description bearings are no longer usable. Left hand jammed outer ring, right hand and hold inside rims, forced to push in all directions, and if felt very loose when pushed, is badly worn.

② troubleshooting: Bearing outer surface rust can erase 00 sandpaper, and then into gasoline for cleaning; or bearing cracks, excessive bearing inner and outer rings chipped or worn, replace with new bearings. Replaced with new bearings, to use the same model with the original bearings.

3 shaft TroubleshootingMagnetic Head Pulley

① shaft bending: bending if not, can be polished journal, slip ring method of repair; when bending over 0.2mm, the shaft can be put in the press, the pressure in the film bends correction after correction shaft polished surface with a lathe cutting; if bent too big, you need to put another one axis.

② journal wear: journal wear little, it would be a layer of chrome plating on the journal and then grinding to the desired size; wear more, can be carried in the journal surfacing, cutting lathe and then polished; If the journal wear is too large, the journal also turning 2-3mm, then car a sleeve, hot sleeve in the journal, and then turning to the desired size

The past two years, followed by a new high gradient magnetic separator and new efficient anti-flotation reagent successful development of high intensity magnetic separation - reverse flotation - roasting joint brown iron ore sorting technology has made significant progress, that is, first through the magnetic - obtain a low impurity content reverse flotation of iron ore, and then through the ordinary roasting or mixed with magnetite concentrate produced pellets of iron can significantly improve product quality, but still high-quality iron materials. We Jiangxi pit iron ore limonite, etc. Experimental resu lts show that the anti-flotation concentrate iron grade can be reached 5% 57, SiO2 content is reduced to about 5%, after the iron grade calcined product may reach 64% or more, and roasting, magnetic separation, reverse flotation combined process analogy, production costs dropped substantially, so that the type of economic exploitation of the value of iron ore, and in 2005 will be put into production. Industrial production over the past practice has a strong magnetic beneficiation process, strong magnetic separation - positive flotation, but because of the nature by limonite (extremely muddy), high intensity magnetic separation device (right-20μm iron minerals recovery than Poor) and flotation reagent constraints, sorting index is poor, while reducing magnetic roasting - weak magnetic beneficiation process cost is high, so the class of basic iron ore has not been effectively utilized. Limonite ore magnetic separator magnetic roasting processes are restored - the weak magne tic separation, high intensity magnetic separation, re-election, flotation and joint processes. In order to improve the recovery of fine-grained iron minerals, was conducted using lignite as a reductant and fuel kiln roasting technique semi-industrial tests, flocculation - intensity magnetic separation technology industries, such as testing, have achieved good results.

Widespread market separator device is Yu Fa Machinery gravity respected products, gathered in the existing high-tech products in the market, you want to become an overnight success is very difficult thing, but only determined to create will win a sunny day . Yu Fa Machinery separator is designed for mining beneficiation industry design of a mineral processing equipment, it is mainly used in addition to iron work or mix different types of mineral resources among the beneficiation process systematization, which has been incorporated into a mine irreplaceable Among the mineral processing industry, beca use it has a foundation conquering beneficiation conditions:

Magnetic system used in all high-performance NdFeB rare earth materials and making high-quality ferrite materials, a cleverly open magnetic circuit design, drum table of maximum magnetic induction constituency more than 0.8T, the magnetic field strength is a conventional machine 3 -5 times, sub-district of electromagnetic field strength can reach the level of intensity magnetic separator. Durable stainless steel cylinder by sorting refined.

Mineral separator equipment sorting through vibrating feeder evenly into the separation tube to the upper part of the rotation of the cylinder barrel stripped non-magnetic materials, magnetic materials subject to strong magnetic force attracted to the cylinder, with the sub-ore board easily and accurately the magnetic, non-magnetic material separation. Beneficiation process professional, rational, efficient, high-quality performance.

High quality magnetic separator device is a highly coordinated operation equipment, which appeared in a number of specialized processing production line process among the available refractory materials, chemical materials, grain and oil machinery, abrasives, ceramics, metallurgy, cement , powder metallurgy, rubber, minerals and other materials in addition to (elect) iron work to use, and with Raymond mill, grinder, supporting the use of a ball mill, and magnetic separation - flotation, magnetic separation - re-election is nearly Some years, the mainstream dressing mix process, the effect has been made mining beneficiation industry recognition, and many have been successfully applied experience.

Because limonite rich water of crystallization, so using physical beneficiation of iron ore grade is difficult to reach 60%, but after roasting larger and substantial progress due to burning of iron concentrate grade. Moreover, because the crushing grinding limonite easily in the proce ss of clay, it is difficult to obtain a higher metal recoveries.

Brown iron ore pit we were selective flocculation - intensity magnetic separation technology industry test results show that iron metal recovery can be increased by 10 percentage points or more, but because of selective flocculation flocculation process equipment and control of the premise of not pass without energy industry.

the energy saving quartz sand iron separator steady overseas markets

Weak magnetic separation equipment to use more permanent magnets do magnetic source, mainly from the energy departure. The strong magnetic field magnetic separation equipment to use electromagnetic magnetic source, this is because the magnetic field of electromagnetic magnetic source
magnetic name tags
Strength can be designed very high, and generally low field strength of the permanent magnet, the magnetic field strength may not meet the requirement. Quartz sand using a permanent magnet iron separator is required

Adopt new and efficient permanent magnet. With magnetic separator overseas export volume continues to increase, our company separator equipment for the pr oduction of quality and process also pay more attention.

    Quartz sand iron Magnetic Separator in the process of design and development focus on independent innovation, unique and advanced quartz sand iron magnetic separator sets of strong, rotating hosts loaded

Set uses a sealed gear box, transmission smooth. Modern machinery industry, whether domestic or foreign competition is very intense, so we can quickly send separator device

Exhibition is entirely based on the design of efficient technology foundation. Growing our precious water resources, it is because of our lack of water gradually, a lot of ground

Parties are lack of water, even to the point where no water to drink. But most of us do not awareness of water conservation, resulting in a lot of water wastage, this hair

Health is our country do not advocate, thus saving on natural resources is very important. We Yu Fat Industry in the producti on of magnetic separation equipment in addition to quartz sand

Iron magnetic separator can be a good save our water resources.Magnetic Plate

 Industry is the basis for national economic development, mineral processing industry is the cornerstone of magnetic separator is one of the devices now commonly used in mining, magnetic separator is mainly used for sorting magnetic

Minerals such as iron-based, but also for non-magnetic minerals in addition to magnetic job, then those commonly used in the specific separator mineral sorting it?

1, black metals: martite, hematite, limonite, siderite, chromite, ilmenite, manganese recycling;

2, non-ferrous metals: tungsten-containing quartz veins fine disseminated wolframite recovery of polymetallic sulfide ore cassiterite in the separation of pyrrhotite, cassiterite and wolframite sub-

Away, the separation of mine rals such as limonite, scheelite and wolframite, garnet and other minerals separation;

3, rare: the tantalum-niobium ore, iron lithium mica, monazite and other recycled.magnetic lifter

4, non-metallic areas: glass ceramic industrial raw materials quartz, feldspar, kaolin purification, high temperature refractory sillimanite, andalusite, kyanite iron removal and addition of

Amphibole, mica, tourmaline, garnet and other harmful impurities, etc.;

 5, other aspects: the weak magnetic tailings recovery; Alumina Plant hematite iron mud election; steel mills, power plants, waste water treatment; cleaning catalysts contaminated by chemical raw

And other materials.

    Quartz sand iron magnetic separator is the use of mineral beneficiation machinery for sorting, quartz sand iron magnetic separator is the most important part of the magneti c system, quartz sand, iron separator

Magnetic system into an open magnetic system magnetic system and graduation open magnetic system that is disposed adjacent to the magnetic pole, the magnetic field strength is not high, with quartz sand in a weak magnetic field on the magnetic separator iron; closed magnetic

Department arranged opposite poles, this magnetic system generates a strong magnetic field, so strong magnetic iron sand separator with closed magnetic system, the election of weakly magnetic minerals.

Quartz sand iron magnetic separator role is so vast, so magnetic separator manufacturers are also more and more, then we select the separator in time will result in distress, such as

How to choose it? Xiao Bian here is not to say, the choice of quartz sand iron magnetic separator when their first look at the categories of minerals, can only be determined after analysis

To use the kind of magnetic separator, mines a ccording to the needs of users to provide a suitable magnetic separator magnetic system equipment, Henan Yu hair professional magnetic separator manufacturer, a professional

Technical team to help you out.

equipo de procesamiento, la estructura interna de cuarzo mineral magnético aplicación razonable separador

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- China Manufacturer

Thank you for inquiry my , Tel: +86 755 2692 3096, E-mail: sz.magnet@mailcenter.com.cn

Fuerte mineral magnético tamaño de los gránulos de las partículas minerales magnéticos tiene un efecto significativo. Con que disminuye el tamaño de partículas, las partículas de mineral serán más pequeños que la susceptibilidad magnética es que aumenta la fuerza coer citiva. Es decir, los granos minerales más pequeños, más fácilmente magnetizado después de magnetización y desmagnetización, especialmente cuando el tamaño de partícula es menor que 20-30um. En la selección de zonas semi-cuerpo actual vástago, medios de montaje el agua de lavado, el concentrado adsorbido en el tambor de lavado repetido, el propósito de mejorar el grado de concentrado;, el contador de media ranura en tercer lugar, más de selección de exploración cuerpo femenino flujo modificado de manera que la pulpa producida de barrido efecto de vuelta de circunscripción, disminuyendo la velocidad de flujo de la suspensión de manera que los minerales magnéticos tienen más posibilidades de ser reciclado.
iman tierras raras
      Cuarzo magnético princip al función separador mineral es realizar minerales magnéticos, realizadas en materiales no magnéticos, trabajo del hierro, sino también para concentrada antes que el equipo de filtración. Durante la última década, para la clasificación de bajo grado diseminada tamaño de grano fino y composición mineral de complejos minerales débilmente magnéticos, ha desarrollado diversas formas de cuarzo separador magnético de mineral, tales como el anillo, jaula, disco, más aún en la etapa experimental. Medio de cuarzo mineral magnético separador magnético separador se utiliza principalmente para mineral de óxido parcialmente ferromagnético. De acuerdo con las necesidades del usuario, para producir el dispositivo separador magnético correspondiente.
imanes de tierras raras
       Tipo de sistema de cuarzo mineral de sistema magnético separador magnético magnético hay dos tipos, a saber, abrir sistema magnético y el sistema magnético cerrado. Los diferentes tipos tienen diferentes propiedades magnéticas de sistemas magnéticos. Sistema magnético abierto en el mismo lado del polo está dispuesta adyacente a y entre los polos magnéticos medio no magnéticas, una brecha grande de aire, las líneas del campo magnético en el espacio de estado abierto, el llamado sistema magnético abierto; cerrado polos opuestos dispuestos del sistema magnético, espacio de aire muy pequeño entre, líneas cerradas de campo magnético en el pequeño espacio, de modo que el sistema magnético cerrado.

     Cuarzo mineral separador magnético con un sistema magnético abierto. Abra sistem a magnético de los polos magnéticos de superficie plana o curvada comunes dispuestas en dos tipos de polos magnéticos o poste a lo largo de la cual la distancia entre el plano de simetría de la variación de la intensidad de la inducción magnética de líneas de campo magnético fórmula exponencial. Cuarzo mineral de equipo separador magnético de la hematita, limonita, manganeso y otros minerales magnéticos débiles primarias tienen aplicaciones. Separador magnético se compone de dos lados adyacentes del diseño interno del cilindro del tambor no gira con el imán permanente, el imán se compone de varios polos magnéticos NS composición alterna; pared del tambor está diseñado con múltiples anillos, anillo dispuestas por el hierro o imán magnético poli acero inoxidable. Cuando un imán de barra con el cilindro ma gnético giratorio poli al área imán, poli imán se magnetiza, el campo magnético hasta 1T. El dispositivo se utiliza ampliamente en materiales en polvo, hierro y materiales de mediana magnéticos. imanes permanentes

    Mineral de equipo separador magnético de cuarzo se utiliza ampliamente en los sectores de procesamiento, carbón y químicas minerales, el tamaño de partícula clasificación húmeda 6-0 mm minerales magnéticos fuertes, por lo que el material mineral y no magnético se divide en dos tipos de productos de material magnético. Con el fin de mejorar la eficiencia del separador magnético, se ha producido un tamaño de partícula de tanque de aguas abajo de beneficio ≤ 6 mm, depósito de contracorriente ≤ ≤ 0,5 mm medio tanque contracorriente tres ranuras de estilo de la carrocería de 1,5 mm, diferentes, de acuerdo con las necesidades de los usuarios con diferente estructura de ranura.

     Para separador de mineral de cuarzo, la adopción de método de lubricación eficaz que puede reducir el desgaste del dispositivo en sí. En el curso de controles periódicos de todas partes de la lubricación del tornillo y de mantenimiento, sobre todo donde hay un desvío a menudo relleno de mantequilla, aceite. Generalmente, el dispositivo responsable de la máquina que lleva toda la carga, por lo que una buena lubricación de la duración de la vida del cojinete tiene una gran influencia, que afecta directamente a la vida útil del equipo y la velocidad de funcionamiento del tamaño, lo que requiere la inyección de aceite lubricante debe estar limpio limpio y lubricantes tienen un buen sello, cuarzo separador magn ético de mineral de rotación cojinetes, rodamientos de rodillos, los engranajes, cojinetes actividades, plano de deslizamiento y por lo tanto necesitan tener una buena lubricación.

     En la insuficiencia o accidente equipos, es necesario tener en cuenta el separador magnético de mineral de cuarzo de la manera de iniciar la tercera etapa, el fallo del equipo es entrar en el obstáculo principal, un fenómeno cilíndrica no puede girar, el sonido separador sonido anormal magnética; tanque de bastante movimiento, pieles de tambor han cortado marcas. Con ellos como una sola especie o variedad se produce, las medidas específicas adoptadas se detienen y eliminan los desechos inmediatamente, solución de problemas, compruebe siempre si hay engranajes pernos relajación, tomar medidas oportunas para prevenir daños a la máquina. Sólo cuarzo mineral de eq uipo separador magnético de seguridad el estado normal de los indicadores para poder sacar el tambor magnético inicio separador magnético permanente es razonable.

olenoid valve Type

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solenoid control valve - China Manufacturer

Thank you for inquiry my solenoid control valve, Tel:0086-574-88869817, Email:jelpc@jelpc.com

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olenoid valve Type
1, the solenoid valve from the principle divided into three categories:
1) Direct acting solenoid valve:
Principle: power, the electromagnetic coil of electromagnetic force to lift the closure of parts from the valve seat, the valve opens; power, the electromagnetic force

disappears, the spring of the closure member against the valve seat, the valve closes.
Features: In a vacuum, negative, zero pressure can work, but the path is generally not more than 25mm.
2) step direct acting solenoid valve :
Principle: It is a direct-acting and pilot-operated combination of theory, no pressure when the inlet and outlet, the power, the electromagnetic force directly to the

pilot valve and the main valve closure member in turn lift the valve to open. When the inlet and outlet to start pressure, the power, electricity

Magnetic pilot valve, the main valve chamber under increased pressure, the upper chamber pressure drops, and thus the use of pressure to the main valve is pushed

upwards; power, the pilot valve with a spring force or medium pressure to promote off pieces, moving down, so that the va lve Close.
Features: zero pressure or vacuum, high pressure can also be * action, but the power is larger, the request must be installed horizontally.
3) Pilot solenoid valve:
Principle: power, the electromagnetic force open the pilot hole, the upper chamber pressure decreased rapidly formed around the closed lower on the high pressure, the

fluid pressure to promote off pieces to move up, the valve opens; energized, the spring force to the pilot hole is closed, the inlet pressure through the bypass

Through holes quickly close the valve chamber formed around the low-down on the high pressure, the fluid pressure to promote off pieces moving down, close the valve.
Features: Fluid pressure range limit is higher, can be any installation (to be customized) but must meet the conditions of fluid pressure.
2, the solenoid valve from the valve on the different structures and materials with the principle of distinction, is divided into si x branches subcategories: direct

acting diaphragm structure, step by step direct-acting diaphragm structure, the pilot diaphragm structure, direct-acting piston structure, step direct-acting piston

structure, the pilot piston structure.
3, the solenoid valve according to functional classification: water solenoid valve, steam solenoid valves, cooling solenoid valve, cryogenic solenoid valve, gas

solenoid valve, fire solenoid valve, the solenoid valve ammonia gas solenoid valve, the liquid solenoid valve, miniature solenoid valves, pulse solenoid valve,

hydraulic solenoid valve

Normally open solenoid valve, oil solenoid valves, DC solenoid valves, high pressure solenoid valve, explosion-proof solenoid valves, etc.  solenoid valve suppliers

Hydraulic rotary joint advantages

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As the hydraulic drive to the electrical transmission and advantages of mechanical transmission, hydraulic

transmission in various industries more widely used. Hydraulic rotary joint
  Advantagehydraulic hose
The incr easingly widespread application. If the hydraulic actuator relative to the media source is fixed,

you can use steel transmission medium to the implementing agency. If the actuator relative to the media

source has a small amount of movement (move, rotate, swing) you can use the high-pressure hose connection.
quick couplings
If the high-speed rotation of the shaft has a hydraulic cylinder, its transmission medium is required to

use the rotary joint. Currently, the rotary joint is not yet standardized, relatively small manufacturers.
Edit this paragraphstainless steel hydraulic fittings

insulating joints

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The overall effect of insulating joints
Buried steel oil, gas, water pipelines often due to corrosion damage, not only reduces life expectancy, also cause serious accidents. Prevent corrosion of buried pipeline is to take effective measure s to cathodic protection technology. In cathodic protection project it is required to be protected pipes and connected to some of the installations, equipment, electrical connection between the branches cut off, to avoid cathodic protection current is lost to the need to protect the connected components. In order to ensure the success of cathodic protection.
Previously used to achieve this across the insulating flange electrical connection. But the construction site installation requirements insulating flange clean, no moisture, here is difficult to achieve. Insulating flange bolts are often unreliable. It has been shown that many insulating flange insulation is only a short-term guarantee. As insulating flange failure, often makes well-designed, well construction cathodic protection system failure, resulting in leakage or leakage, resulting to pay high maintenance costs. In addition, the buried insulating flange often require ancillary structures - flange wells, increa se the surface area and additional fees.
New pipeline insulation equipment - the advent of the overall insulation joints, then to overcome these problems. It uses a maintenance-free, non-removable overall structure, can be directly buried, no outbuildings, extremely easy to use and with high reliability.brass hose fittings
This type of insulation joints can meet the overall cathodic protection requirements, but also to avoid the insulating flange defects, as replacement products, foreign countries have been widely adopted. China has promulgated SY/T0086-2003 standards also recommend the use of the new product.
ZJ3 series featureshydraulics fittings
ZJ3 overall type insulation joint company through several generations of unremitting efforts to develop scientific and technological personnel, has formed a series of products. In product desig n, material properties, tooling and process improvement and other aspects unique, with full independent intellectual property rights. And product quality can be comparable to similar foreign products. By the state five ministries listed as national key new products.
ZJ3 series insulating joint has the following characteristics:
1. Factory assembled, the overall structure of prefabricated
2. The factory strictly mechanical, electrical inspectionhose crimping machine
3. Suitable for direct buried
4. Without any maintenance
5. According to a variety of specifications to meet the high, medium and low pressure oil, water and gas industry requirements for pipe network
ZJ3 overall type insulation joints main technical indicators:

Working pressure: 1.6 ~ 42Mpa (420 Kg)
Operating temperature :: -20 ~ 320 ℃ (220 hot line has been obtained on application)
Dielectric Strength :: ≥ 5KV, 50Hz
Insulation resistance: 2500V measurement ≥ 10MΩ
Nominal diameter: DN15 ~ DN2500 (1.6 meters in diameter, has large diameter insulated joint application examples)

Comparison of sliding bearings and rolling bearings

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In the work of bearing rolling friction. 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 bigge r. Rolling in the radial bearings (mainly radial force) usually consists of inner and outer rings, rolling and rolling element cage four parts. Inner sleeve in the journal together with the shaft rotates, the outer ring mounted in the bearing bore. In the inner and the outer periphery of the inner periphery of the outer ring are formed with raceway. When the relative rotation of the inner and outer rings, the inner and outer rings of the rolling element raceway, are separated by the cage, to avoid friction. Thrust bearings are divided into a tight circle and live ring in two parts. Tight circle and sleeve tight, live ring bearing in the bearing housing. Rings and rolling elements commonly used high strength, wear resistance, good bearing steel, surface hardness after quenching should reach HRC60 ~ 65. Cage mostly made of mild steel stamping, copper alloys can also be used bakelite cloth or plastic manufacturing.slewing b earing suppliers

Many different types of rolling bearings.
       1, according to the direction of load can be divided into radial bearings (radial force and small axial force), thrust bearing (only bear axial force) and radial thrust bearing (can withstand the radial and axial force).
       2, according to the shape of the rolling elements can be divided into ball bearings, roller bearings and needle roller bearings.
       3, according to the working conditions can be divided into plain bearings, high-speed bearings, high temperature bearings, bearing temperature, vacuum bearings, magnetic bearings, corrosion-resistant bearings, precision miniature bearings and oversize bearings. The various types of bearings into China B, C, D, E, G 5 个 accuracy level, B is the highest accuracy level, G is the general level of accuracy, the most common.

Rol ling is the standard, by special bearing factory mass production. Design choices are often factors to be considered life, load, precision, clearance (radial and axial), the limit speed, friction torque, aligning performance, preload and rigidity, vibration and noise.

With the sliding bearing, bearing the advantages
       1, under normal conditions, the efficiency and hydrodynamic bearings lubricated bearings pretty, but more mixed lubricated bearings should be higher;
       2, the radial clearance is relatively small, radial angular contact bearings can be used preload preload to eliminate backlash, high running accuracy;
       3, for the same size shaft, bearing a width smaller than the sliding bearings, make the machine compact in the axial direction;
       4, most of the rolling bearing can be subject to both radial and axial loads, so bearing composite structure is simple;
       5, less lubricant consumption, easy to seal, easy to maintain;thin wall bearings
       6, no useful for non-ferrous metals;
       7, the high degree of standardization, mass production and low cost.

With the sliding bearing, bearing disadvantages:
       1, less able to withstand impact loads;
       2, high-speed heavy load bearing lower life;
       3, vibration and noisy;
       4, the radial dimension than the sliding bearings.