Bearing technology knowledge http://liuser.com Sun, 05 Feb 2012 05:18:00 +0000 en hourly 1 http://wordpress.org/?v=3.0.1 Several kinds of common categorised methods and characteristics of the rolling bearing http://liuser.com/several-kinds-of-common-categorised-methods-and-characteristics-of-the-rolling-bearing http://liuser.com/several-kinds-of-common-categorised-methods-and-characteristics-of-the-rolling-bearing#comments Sun, 05 Feb 2012 05:18:00 +0000 admin http://liuser.com/several-kinds-of-common-categorised-methods-and-characteristics-of-the-rolling-bearing Several kinds of common categorised methods and characteristics of the rolling bearing:

First, classify the bearing according to the size of its external diameter according to the rolling bearing size, divided into:

1 Miniature bearing —-The size range of the nominal external diameter is a bearing under 26mm;
2 Small-scale bearing —-The size range of the nominal external diameter is a bearing of 28-55mm;
3 Medium and small-scale bearing —-The size range of the nominal external diameter is a bearing of 60-115mm;
4 Medium-and-large-sized bearing —-The size range of the nominal external diameter is a bearing of 120-190mm Bearing navigation
5 Large-scale bearing —-The size range of the nominal external diameter is a bearing of 200-430mm;
6 Super-huge bearing —-Nominal external diameter bearing above the 440mm in range in size.

Second, classify according to the structural type of the rolling bearing

1 The bearing, according to the loaded direction can be borned by it or difference of the nominal contact angle, divided into:
1 To the heart bearing —-Mainly for bearing the rolling bearing with loaded radial, it is exposed to the angle from 0 to 45 that it is nominal. Different according to angles of nominal contact, divided into again: The radial contacts the bearing —-Nominal to exposed to angle as 0 to the heart bearing: Contact the bearing to the angle of heart —-Nominal to exposed to angle, greater than 0 to 45 to the heart bearing.
2 Thrust bearing —-Mainly for bearing the axially loaded rolling bearing, it is exposed to the angle and greater than 45 to 90 that it is nominal. Press nominally and is exposed to the angle with dividing into again: Axial contact bearing —-It is exposed to the angle as the thrust bearing of 90 that nominal: The angle of thrust contacts the bearing —-It is exposed to the angle and greater than 45 but smaller than the thrust bearing of 90 that nominal.

2 The bearing rolls the kind of the body according to it, is divided into:
1 Ball bearing —-It is ball to roll the body:
2 Sub bearing of the roller —-Roll the son in order to roll of body. Roll sub bearing, according to get away sub kind, divide into again: Sub bearing of the cylinder roller —-It rolls body to be whether cylinder get away son’s bearing, the cylinder rolls the son’s length and diameter proportion are less than or equal to 3; Needle bearing —-It rolls body to be to roll bearing of needle, roll length and diameter of needle proportion 3 greater than, but the diameter is less than or equal to 5mm; Sub bearing of the taper roller —-It rolls body to be whether taper get away son’s bearing; Transfer heart roll sub bearing it rolls body to be whether sphere get away son’s bearing one by one.

3 Bearing could adjust heart work, according to it, is divide into:
1 Adjust the heart bearing —-Roll and say it is sphere shape, can meet the bearings of two angular deviation and angular motion between space of an axis of rolling; Bearing type inquiry of the car
2 Do not adjust the heart bearing rigidity bearing —-Can impedance roll dishes of rooms of the intersection of axis and the intersection of line and the intersection of corner and bearing of skew.

4 The bearing is counted according to the row which rolls the body, is divided into:
1 Uniline bearing —-Have a bearing to roll body;
2 Pair lists the bearing —-Have two bearings to roll body;
3 List more bearings —-Have it more than two bearings to roll body, such as three, four bearings.

5 Whether the bearing could be separated according to its part, is divided into.
1Can separate the bearing —-Have bearing that can separate the part; Inquire about the software in bearing type
2Can’t separate the bearing —-The bearing is after forming a complete set finally, the bearing that one set of circles can’t separate arbitrarily freely.

6 According to structural shape fill trough, outer lane and sets of shape of lap their bearing, block the structure of the side, even keep shelf,etc. Can also be divided into many kinds of structural types.

]]> http://liuser.com/several-kinds-of-common-categorised-methods-and-characteristics-of-the-rolling-bearing/feed 0 Bearing knowledge: Must the bearing be washed before installation http://liuser.com/bearing-knowledge-must-the-bearing-be-washed-before-installation http://liuser.com/bearing-knowledge-must-the-bearing-be-washed-before-installation#comments Sun, 05 Feb 2012 05:16:45 +0000 admin http://liuser.com/bearing-knowledge-must-the-bearing-be-washed-before-installation Chinese car bearing network bearing classroom: The surface of the bearing applies and antirusts the oil, you must wash carefully with the clean petrol or kerosene, and then spreading the clean and high-quality or with high-temperature high speed lubricated oil can be installed and used.

It is very great to clean degree to bearing life-span and influence of shaking the noise.

But we should especially remind you: The totally closed bearing need not be washed and refueled.

]]> http://liuser.com/bearing-knowledge-must-the-bearing-be-washed-before-installation/feed 0 The hydraulic system of the press of the liquid requires and analyzes http://liuser.com/the-hydraulic-system-of-the-press-of-the-liquid-requires-and-analyzes http://liuser.com/the-hydraulic-system-of-the-press-of-the-liquid-requires-and-analyzes#comments Sun, 05 Feb 2012 05:15:30 +0000 admin http://liuser.com/the-hydraulic-system-of-the-press-of-the-liquid-requires-and-analyzes The hydraulic system of the press of the liquid requires and analyzes:

The intersection of liquid and according to suppress the intersection of technological requirement and master cylinder, can finish, fall fast one moderation suppress, protect, press, delay time, let out, press return stop press the arbitrary position Works basic circulate,and pressure, speed and assuaring whether it is can regulate to need to last time.

It is mainly used for carrying out the work piece carrying the hydraulic jar out, require that can realize the movements carried out, returned, stopped.

For instance demand to carry auxiliary movements such as the hydraulic jar rising, stopping and backward stroke of pressure,etc. out again when the sheet metal is drawn.

Still need by pressing sometimes the jar compresses tightly the blank, in order to prevent the perimeter from wrinkling. Bearing enterprises

The press of the liquid is with the main executive body master cylinder in main sports The largest pressure tonnage that may be outputted As the main specification of press of the liquid, and has already seriation.

The tonnage of carrying the material jar often adopts 20% one 50% of the master cylinder tonnage.

Carrying about l0% that the jar can adopt the main tonnage out of pushing machine. Type inquiry of the bearing

One pair of one that move and draw the press of the liquids presses jar tonnage, generally adopt about 60% which draw the jar tonnage.

Needed to confirm the speed of the master cylinder by the preparation method of the pressure, generally in offered the hydraulic system of the oil directly by the pumping, working the intersection of journey and speed its less than 50mm/ s, enter speed, less than 300mm/ s quickly, retreat speed with stock the speed, equal to quickly quickly.

The press of the liquid is that the hydraulic transmission technology of the use carries on the apparatus that the pressure is processed, can be used for finishing various and forging and pressing and pressurizing and shaping processing. For example the forging and pressing of steel products, the shaping of the metal structure one, the suppressing etc. of plastic products and rubbery products. Inquire about the software bearing world in bearing type of the car

The press of the liquid employs the machinery of hydraulic transmission first, hydraulic transmission has already become the main transmission form of the pressure processing equipment at present. In heavy wares manufacturing industry, aircraft industry, plastics and nonferrous metals processing industry,etc., the liquid press has already become the important apparatus.

The hydraulic transmission of the press of the liquid relies mainly on the fact that the pressure is varied, the systematic pressure is high, the flow is large, the power is large.

So, should pay special attention to improving the original motive power utilization ratio and preventing letting out and producing and striking and shaking while pressing, it is safe and reliable to guarantee.

]]> http://liuser.com/the-hydraulic-system-of-the-press-of-the-liquid-requires-and-analyzes/feed 0 Why is the keepers of the bearing damaged http://liuser.com/why-is-the-keepers-of-the-bearing-damaged http://liuser.com/why-is-the-keepers-of-the-bearing-damaged#comments Sat, 04 Feb 2012 04:27:56 +0000 admin http://liuser.com/why-is-the-keepers-of-the-bearing-damaged

The damaged phenomenon of the keepers of the bearing is not very obvious, under normal conditions it is not apt to judge. The vibrations of the bearing, the speed goes beyond the designing requirement, abrade, it is all the main reason that the keepers is damaged that foreign matter is seized and crooked etc.. Analyze on the above said situation:

1,Vibrations

When the bearing is in the state of shaking, the fatigue crack that the strength within the bearing may bring on keepers. Gradually, this crack will make the keepers break. In order to prevent this phenomenon, can adopt the bearing which allocates the special keepers.

2,The speed goes beyond the designing requirement

If the bearing operates by the speed of materials can bear to go beyond keepinging, mass force will cause the keepers to break. Make the high-speed bearing available for this kind of occasion specially.

3,Abrasion

Improper lubricated or hard foreign matter will make the keepers of the bearing abrade. The rolling bearing is avoided sliding friction to taken place most while running. But roll son’s sliding with keepers is contacted and usually can’t be dispelled, so if lubricate badly, the keepers is the abrasion part standing in the breach. And the keepers is made of material with softer texture, so it is quite fast to abrade. The interval of the keepers gradually will enable the break-up quickly of the keepers. When the hard particle penetrates the bearing, will have the same state that take place too.

4,Foreign matter is seized

The too cracked to have or particle of the part may be blocked in the keepers and rolled between the sons. Hinder rolling one to roll. This will cause the keepers to break too. Can prevent large-scale foreign matter from invade bearing, occasion that heavy load carries on one’s shoulder or back, the keepers can be safe and sound too.


]]> http://liuser.com/why-is-the-keepers-of-the-bearing-damaged/feed 0 Bring the structure characteristic of sphere bearing outside the stand http://liuser.com/bring-the-structure-characteristic-of-sphere-bearing-outside-the-stand http://liuser.com/bring-the-structure-characteristic-of-sphere-bearing-outside-the-stand#comments Sat, 04 Feb 2012 04:26:40 +0000 admin http://liuser.com/bring-the-structure-characteristic-of-sphere-bearing-outside-the-stand

Bring outside the stand the sphere bearing is a kind of bearing unit combined rolling bearing with bearing seat. Make the external diameter into the sphere, install with the bearing seat with inner hole of ball-shaped together with sphere bearing outside the majority, the structure is various informative, commonability and interchangeability are good.

Meanwhile, this kind of bearing must adjust the disposition in the design too, it is apt to install, the seal installation with double structure, can work under the abominable environment. The bearing seat usually adopts and casts shaping. The daily seat has vertical seats P , square seat F , the square flat FS of protruding platform , the round flat FC of protruding platform , rhombus seat FL , annular seat C Slippery pieces of flat,etc. T .

The kind of the exterior sphere bearing is the following two commonly:

l Take and book the sphere UC bearing outside the screw closely;

2 takes the sphere UK bearing outside the taper hole;

The sphere bearing is divided into bearing heart and bearing stand, add on the call to the bearing stand call with the bearing heart outside leading one, such as take, make the intersection of sphere and the intersection of bearing and UC205 mix vertical flat claim outside the screw closely

UCP205 . Lead outside one the sphere bearing because has very strong interchangeability, the bearing heart can be assembled in the bearing seats of different shapes of the same specification at will.

]]> http://liuser.com/bring-the-structure-characteristic-of-sphere-bearing-outside-the-stand/feed 0 NSK bearing noise and solution improperlied use http://liuser.com/nsk-bearing-noise-and-solution-improperlied-use http://liuser.com/nsk-bearing-noise-and-solution-improperlied-use#comments Sat, 04 Feb 2012 04:25:23 +0000 admin http://liuser.com/nsk-bearing-noise-and-solution-improperlied-use

1,NSK bearing has dust

Solve the method that the dust causes NSK bearing to send out the noise: One can improve the intersection of washing and method of bearing, match part bearing, axle, the intersection of flat and hole in front of device severe clear Shen clean all; Two foreign matter eliminated in the smooth pharmaceutical; Sealing of three improvement bearings; Prevent using the materials to be impure or inlaying the plastics with foreign matter and insisting on the shelf four times.

2,NSK bearing has scar

Solve the method that scar causes NSK bearing to send out the noise: One device good to beat bearing, prevent bearing from install the intersection of NSK and bearing and axle oblique pack into the intersection of bearing and flat assemble; Avoids striking and shaking to avoid the bearing corrosion with transporting at the time of two stock; Use the smooth lipoprotein of high viscosity three times.

3,NSK bearing has improper situation of lubricant

It causes the method that NSK bearing sends out the noise to solve lubricant improperly: It can be divided into three kinds that lubricant is improper: Wrong lubricant of a exertion; Two lubricant lacks; Three lubricant wears out and hardens. Will choose appropriate lubricant, lubricant will be added, should change lubricant regularly according to the lubricating amount.

]]> http://liuser.com/nsk-bearing-noise-and-solution-improperlied-use/feed 0 Install and change the operation or work standard of IKO thrust ball bearing http://liuser.com/install-and-change-the-operation-or-work-standard-of-iko-thrust-ball-bearing http://liuser.com/install-and-change-the-operation-or-work-standard-of-iko-thrust-ball-bearing#comments Sat, 04 Feb 2012 04:24:08 +0000 admin http://liuser.com/install-and-change-the-operation-or-work-standard-of-iko-thrust-ball-bearing Whether the installation of the bearing is correct, influence the precision, life-span, performance. So, design and assembly department as to the thing that abundant research in the installation of the bearing yes. The hope should be installed according to the operation or work standard. The project of the operation or work standard is usually as follows:
1 , wash the bearing and the bearing is turned off and connected with the part
2 , size and finish machining situation of checking and imprisoning and connecting with the part
3 , installation
4 , the inspection that installs after the good bearing
5 , supply lubricant
In namely installation, turned on IKO bearing packaging. General lubricating grease is lubricated, does not wash, pack lubricating grease directly. Lubricating oil lubricate, either needn’t wash while being ordinary, but instrument wait with high speed with the bearing,
Clean with the clean oil, remove the rust inhibitor scribbling on the thrust ball bearing. Remove the bearing of rust inhibitor, apt to get rusty, so can’t put in the air. As to already enclosing the bearing of lubricating grease, needn’t wash and use directly.

]]> http://liuser.com/install-and-change-the-operation-or-work-standard-of-iko-thrust-ball-bearing/feed 0 Backlash introduction to the rolling bearing http://liuser.com/backlash-introduction-to-the-rolling-bearing http://liuser.com/backlash-introduction-to-the-rolling-bearing#comments Fri, 03 Feb 2012 05:05:32 +0000 admin http://liuser.com/backlash-introduction-to-the-rolling-bearing What is called backlash of rolling bearing, one sets of fixed circle, another the intersection of lap and maximum activity along radial or axial. Call the backlash of radial along the maximum activity of the radial, call the axial backlash along axial maximum activity. Generally speaking, the greater the backlash of radial is, the greater the axial backlash is, vice versa. According to the state that the bearing lives in, the backlash can be divided into the following three kinds:

A backlash

Backlash at the time of the free state before the bearing is installed. The primitive backlash is processed, assembled by the factory confirming.

Second, install the backlash

Also call cooperating with the backlash, it is the backlash when bearing, axle and bearing seat are installed and has not worked yet. Because of passing and having a surplus of installation, or make the inner circle increase, or make the outer lane shrink, or the two have both at the same time, make, install backlash to be little than the primitive backlash.

Third, working backlash

The backlash when the bearing is in working order, the inner circle is warm to rise biggest while working, thermal expansion is the greatest, make the backlash of the bearing reduce; Meanwhile, because of the function of load, roll the body with rolling one contacts the place and produces the elasticity out of shape, make the backlash of the bearing increase. Whether the working backlash of the bearing is greater or smaller than to install the backlash, depend on the comprehensive functions of these two kinds of factors.

Some rolling bearings can’t adjust the backlash, let alone dismantle, these bearings have six kinds of types, 0000 type to 5000 type; Some rolling bearing can adjust backlash, can’t dismantle, have 6000 type horn contacts the bearing And the 1000 type, 2000 type and 3000 type rolling bearing of the inner circle awl hole, the installation backlash of these types rolling bearing, after adjustment will be less than the primitive backlash; In addition, some bearing can dismantle, even more can adjust backlash, have 7000 type taper get away sub bearing , 8000 type Thrust ball bearing With 9000 type Sub bearing of the thrust roller Three kinds, these three kinds of bearings do not have primitive backlash; 6000 type and 7000 type rolling bearing, the backlash of radial is turned down, the axial backlash is thereupon diminished, vice versa, 8000 type and 9000 type rolling bearing, only the axial backlash has actual meanings.

The backlash of appropriate installation contributes to the normal work of the rolling bearing.

]]> http://liuser.com/backlash-introduction-to-the-rolling-bearing/feed 0 How to distinguish that imports the bearing true and false? http://liuser.com/how-to-distinguish-that-imports-the-bearing-true-and-false-2 http://liuser.com/how-to-distinguish-that-imports-the-bearing-true-and-false-2#comments Fri, 03 Feb 2012 05:04:18 +0000 admin http://liuser.com/how-to-distinguish-that-imports-the-bearing-true-and-false-2 1.See the bearing appearance, bearing smooth finish, is lower than ‘ 8False product, genuine thing type to afraid of wiping with whom laser carve, the false product type has been lost once wiping.

2.The corner of the bearing is black, the water-proof of the genuine thing does not fade. False product see water become dark mud, lose once wiping, use pitch-dark directly.

3.Bearing pack whom major part make the same as true. Need proving according to the experience.

Is the external packing distinct

Generally speaking, all there are one’s own special designers to pack and pay designing to the outside in the straight factory’s brand, arrange for factory that working condition reach a standard go on, produce, produce, pack no matter piece very much clear from lines to color, without hesitation, have special used for protecting one’s own intellectual property right unique design at part fittings to import brand pack.

Is the embossed seal word clear

Will be marked as brand, marked etc. on the body of bearing. The script is very little, but the straight factory produces and mostly uses the technology of the embossed seal, and press words before passing the heat treatment, so though script is little, deeply concave, very clear. And the script of counterfeit products is not only fuzzy, because of printing word technology coarsely, the script floats on the surface, some even can erase with hands easily.

Sound

Left hand hold the intersection of bearing and set under body, right hand stir overcoat make it rotate, listen to their sound. Because the working condition of most counterfeit products lags behind, the workshop-based operation of the complete craft, will unavoidably mix into sand one kind of impurity in process of production, hide in the body of bearing, so will send out and sound when rotating. This is with carrying out and producing standard, and the biggest difference between the straight factory’s brands operated with the machine strictly.

Are there muddy oil stains on the surface

This should be paid special attention to while buying and importing the bearing. Because present China antirusts technology is not to especially get home yet, it is very apt to leave the thick oil stain to antirust to the body of bearing while dealing with, take in viscous on hand, hardly see, antirust trace of the oil at the original packaging bearing that import abroad, the very careful expert says that has a kind of taste to smell to import the bearing, must add the oil of antirusting, can not just see.

Is it even to pour the angle

Pouring the angle of what is called bearing, the only harsh and unreasonable one and vertical junction of one, the counterfeit bearing is because of the limitations of production technology, punish less than satisfactory in these side the intersection of corner and position of horn.

]]> http://liuser.com/how-to-distinguish-that-imports-the-bearing-true-and-false-2/feed 0 Characteristics and daily types of exceeding the finish machining lathe of the bearing http://liuser.com/characteristics-and-daily-types-of-exceeding-the-finish-machining-lathe-of-the-bearing http://liuser.com/characteristics-and-daily-types-of-exceeding-the-finish-machining-lathe-of-the-bearing#comments Fri, 03 Feb 2012 05:03:03 +0000 admin http://liuser.com/characteristics-and-daily-types-of-exceeding-the-finish-machining-lathe-of-the-bearing Characteristic and daily type of exceeding the finish machining lathe of the bearing:

The ultra finish machining lathe is relatively complicated, special movements are required.

Have an improved ultra precise preparation method on the following foundation, adopt a engineering location, an ultra precise head, a different one to be to insert two oilstones of different nature in the same oilstone is inserted, can process the ditch one separately in accordance with different stages of the processing course. Bearing navigation

One set of circles only takes installation like this, and FAG bearing lathe is compact, production efficiency is high, comparatively economic.

A preface two footwork often call many worker’s location laws too There are the following characteristics:

1It was processed in two pieces of engineering location because assigned to, have ready conditions to choose the oilstone, fully give play to the role of different property oilstones. If adopt thick granularity and soft oilstone in the first worker location, in order to improve to cut function; Adopt detailed granularity and harder oilstone in the second worker location, in order to improve the light to exactly act on. Bearing type inquiry of the car

2Have ready conditions to fully choose the technological parameter, make the best result. The number value of the technological parameter chooses the range to be great on one hand, on the other hand numbers of the available technological parameter are many too, except that the oilstone can be chosen differently, swing angles can also be different, if the first worker location swing angle can fetch a bit more largely, the second worker location swing angle can fetch a bit smaller.

3Two workers ask long equally at the time of processing of the location, and time is coincident, basically the time of original processing course has been shortened by half, even more, have raised production efficiency greatly. Inquire about the software in bearing type

4FAG bearing is processed high qualitily, relatively other methods can be a bit greater for the excising amount, can reduce the geometirc shape error better; It is more complete too to exactly process the light, roughness value is a little lower than what other methods are got, surface quality is steady.

5One set of circles of FAG bearing needs to demand to orient the precision high through clamping of localization two times.

The bearing exceeds the finish machining lathe:

Process the diameter millimetre in type of the name of product Process the range millimetre Swing angle of oilstone degree The oilstone swings the frequency time / divides Linear velocity of the work piece rice / second The external dimension of the weight of electrical machinery of the machining accuracy is long * It is wide and * high millimetre Roughness Ra of the width of ditch foot-path of factory’s diameter micron Net weight of gross weight of the main electrical machinery total capacity
The angle is exposed to the ball bearing and enclose an ultra precise grinding machine 3MB3010 outer lane external diameter 100 inner circle internal diameter 65 26-100 8-25

]]> http://liuser.com/characteristics-and-daily-types-of-exceeding-the-finish-machining-lathe-of-the-bearing/feed 0