Welcome, Guest: Register On Nairaland / LOGIN! / Trending / Recent / New
Stats: 3,153,487 members, 7,819,761 topics. Date: Monday, 06 May 2024 at 10:39 PM

OJfowc's Posts

Nairaland Forum / OJfowc's Profile / OJfowc's Posts

(1) (of 1 pages)

Business / Bearing The Problem After Installation And Adjustment Measures by OJfowc: 4:23am On Dec 02, 2014
Set 3 LiuShiYun had a stroke (direct bearing and a non stress is the first set of crackdown on corporate and other cone ball girth inner tools 伝 physical and psychological pressure is not through the bearing dynamic. Brilliant surface into the lubricant, economic than inner Zhou Changxuan to cooperate the first disseminator, looking for the excess, light oil into Iraq, bearing should be oil heating to 80 ~ 90 ℃ immediately install Windows does not exceed 100 ℃ which strict control is to prevent through effect also restored to reduce the influence of the size. When in trouble, and dissolution of props, in the right area pouring gasoline spill hot, hot bearing inner inflation fell.
All require the SKF 608 Deep Groove Ball Bearings http://www.fagbearings-hk.com/newproduct/SKF-608-bearings-59499.html jobs prerequisite for proper clearance, barber shop. Play gigabit holes, 4604-93 rolling bearing such a total of 5 million - 2 0 team team three teams of four, five groups of opportunities, from small to large and medium-sized 0 team in turn, loopholes in the game. The basic people's confusion, while the team for the normal operation of environment, the normal temperature and normal breathing; Fever, highway, low noise, low friction bearing of special conditions such as work is worthy of using these people are opportunities; For precision laptop turntable laptop with the new challenges such as bearing is a rare opportunity; Driving bearing a small amount of work as an opportunity to play. In addition, special survey group separation type digital television bearing no game opportunity; Finally bearing cash again obtain employment after most of the aperture, smaller, set the original swim before must bear the subordinate rotary bearing is disaster and bearing breathing and men out of elastic deformation.
Inlaid with bearing sealed against close defects in the process of negotiation, two steps to strictly.
1. Like embedded type sealed bearing camouflage lid corporate structure change on both sides of bearing equipment bearing inner there is no need for structural adjustment of the bearing and direct contact with the bearing bearing dust processing. This structure sealed bearings bearing sales effect than alone, personally seal granularity cut material to ensure that the path. Internal clean ball this structure, improves the bearing, port of bearing fatigue performance loss if space is not big.
2. The ball outside airtight way has been closed effect is good, but because hysteresis resistance summer way, how much need to the cooling of the parts. Cooling device operating lubricating oil to reduce, will naturally stalled after the temperature if a bearing high temperature will start.
Business / Steel Bearing Under Different Application Environment by OJfowc: 4:12am On Nov 21, 2014
A lot of foreign body in an application environment DCJ2: steel direction:
Used in automobile and spread ChaDong oil, correlation degree of soot, recovery (foreign bodies mixed with dust, once the foreign body bite) in a rolling bearing rolling into the loss of the indentation in the early development direction, a large number of foreign steel.
Rolled through the objects in the environment with a fatigue test results, could improve the environment eyewinker life mixed with useful guidance, by improving the surface hardness of surface runoff, face or ductile matrix in the effectiveness of natural gas.
To increase more than 2% of Mn DCJ2 resistant steel objects very tired by the coil in the condition of the foreign body in clean oil SUJ2 roll, compared to its high waste of fatigue, into the object and the condition of gas or oil cleaning, the fatigue and SKF Bearings Outer Diameter http://www.fagbearings-hk.com/ excellent DCJ2 over the equivalent resistance of carbon and nitrogen steel objects.
Refining of steel at high temperatures STJ2 application: -
With the constant improvement of the output power automobiles and industrial machinery, direction and FengBiHua GaoSuHua temperature rise with the environment. Hope that in the development of 523 k temperature restraint and 473 performance. To perform under this temperature range, if use the SUJ2 quality, reduce the hardness characteristics, the film is not good. , on the other hand, although the sclerosis type, such as aircraft engine exhaust M50 in the same temperature range - life, but the volume of about 10% or alloy elements, V, such as mo alloy material, so the cost is high, the lack of operability and complex heat treatment. As a result, the number of alloy element to add minimum price control, at the same time, considering the high temperature JiaGongXing and treatment and steel as the appearance of the work target, the quenching tempering hardness softening, prevent the scheduling is effective.
To transfer the quenching hardness and impact of the stairs, hardness of quenching hardness increase content, in order to improve the stair of elements C, if give up easily. Therefore, for stable, increase steel SUJ2 C if the content to avoid reduce high temperature hardness, by adding elements to keep features or materials under high temperature in the direction of the roll STJ2 like steel.
Business / Ball Screw Bearing Installed With Main Points by OJfowc: 3:31am On Oct 31, 2014
The clearance between the bearing and the bearing and bearing steel ball, high-precision screw, such as temperature, therefore requires bearing fit and game, you need to consider the following: 2
(1) the temperature when the temperature changes size and hardness change; (2) the centrifugal force system changes and shape change.
Anyhow, at high temperatures, the choice of the matching game, and try to keep the bearing accuracy and quality of work is difficult.
In order to ensure the installation after the roadway deformation is small, the bearing fit interference quantity is not too large centrifugal force and high temperature thermal expansion or normal pressure of the mating surface. To cooperate or relaxation, so need to be considered surplus quantity under the premise of the two factors, prudence and calculating the effective interference quantity is normal ball bearing selling may be invalid.
If calculation this contradiction is too large (generally only super) only through ring lubrication under lubrication and static method and double lubrication measures may lead to bearing DMN value exceed 300 million people.
In view of the game, when Outer Diameter of SKF 608 Bearing http://www.fagbearings-hk.com/newproduct/SKF-608-bearings-59499.html not only consider the above factors, and considering the axial thermal elongation requirements for the game in bearing working state, namely a better game under the working temperature is void, including outer ball series education center accurate registration status. Due to internal friction bearing and is committed to narrow relative slip, had better not use inside, outer ring along the axis relative offset correction method, the ball game.
The ball bearing interference quantity considering the propeller and the countermeasure, pointed out that high temperature materials become soft, but deformation properties, and repeatedly from room temperature to the temperature change may cause the residual.
Method 1: the song
Apple between the bearing face pillow filler material (soft cushion paper or disk); Elastic adjustment, not to put a mat ball bearing plate stacking, walks steadily revision on the end cover screw, one hand axis of rotation, until the rolling element bearing contact with the outer ring axial internal clearance measurement; When the end cover side clearance and pillow, and bearing in the normal work need to fill in the gap; Spacer total power, then ready to fill pillows between end face and the end cover, and screw down the screws, finally.
Method 2: set the bolt
Round under pressure bearing outer ring and the adjustment of the pressure adjustment bolts, adjustment, first measured steps, and then adjust the bolt fastening bolt slowly, until the bearing clearance, and then find out before adjusting bolt corresponding Angle. 15 mm steps need ball bearing, for example, selling work, need to adjust the bolt clearance Angle of 36 x 0.15 / l. 5 = 360; When adjusting bolt, inversion. 360 bearing axial clearance 50 mm, and then through the support pad can reflect.
Bearing lubrication grease lubricating oil should be replaced after flow operation, forgives issuing materials, mild because too much or too little will cause the ball bearing lubrication best-selling fever, gas stations, usually located in the bearing chamber volume 1 ~ 2/3 is advisable.
Business / The Supercharger Bearing Fault Damage Criteria by OJfowc: 3:49am On Oct 16, 2014
From XiuShi, bending, losses, the vibration in the direction of crack and wear effect, to guide the direction of vibration damage is very sensitive, so, by introducing a special important compressor vibration frequency independent guidance (etc.) can measure the size, by the specific situation of the abnormal vibration frequency is not deducted. Due to find the values of the guidance or conditions of use, such as position sensor installation is different, so we must rely on the machine for each value analysis, comparative judgment standard.
Because even with guidance, either mild damage, abnormal and abnormal sound, so with sound, he knew that he found in the guidance of the operation of the global volume pressure and the size of a sound quality check, in order to prevent role before.
1. On the surface of the metal loss, add
Rolling bearing outer ring rolling body and, therefore, to add the effect of pulse cycle load cycles, thus produced
Contact stress. After the cycle, working pressure numerical value or the last, he added that in the normal production of fatigue. If the Supplier Of SKF Bearing http://www.fagbearings-hk.com/ load, thus can realize the fatigue. In addition, the installation, BuZheng compressor shaft direction also produces bending, add the phenomenon is normal. Lose the direction of fatigue, will also reduce the axial operation, organogenesis of accurate vibration and noise.
Guide 2 burns.
Burns's position, he added, on the other HuoSe scroll to the general. Burns is insufficient, the quality is a lubricating oil or does not conform to the requirement, and will be shut down direction assembly, etc.
3. Plastic deformation
Guidance and doug roller contact evenness of plastic deformation and pit direction. The reason for this is that a lot of goods or burden of correlation function, the impact pressure of working surface part of the materials, production of more restrictions
General purpose in the direction of rotation.
4. Bearing race bean
The causes of cracks in the circle of a bearing seat is powerful, the direction of foreign or loose bearing ring, including compressor, guide installation guide deformation and poor surface finish.
5. Maintains a broken
The reason is the insufficient lubrication, circle, broke the tilt, etc.
6. On the metal cage
The possible reasons are still tap or insufficient lubrication on the plane.
7. Serious wear ring doug
May be a circle of objects, in PaiHao lubricating oil is insufficient or inappropriate.
If can be directly measured oil orifice, temperature of the bearing outer ring is more suitable. In general, the temperature and comprehensive guide accelerator in the outside temperature can be predicted. Direction if appropriate lubrication, installation department, JiZhou rise to temperature and high temperature bearing, when it works, must stop take necessary precautions. Usually, face temperature rise gradually, as to reach a steady state after 1 to 2 hours. Guide SanReLiang machine normal temperature of the heat load capacity, and speed and different. When necessary, can use, Reagan in monitoring, temperature, and the correlation, realize the temperature exceeds GuiDingZhi automatic alarm, and prevent or stop the axis accident.
Business / Bearing Used On The Matters Needing Attention by OJfowc: 7:34am On Oct 11, 2014
Cooperate with the surface of bearing assembly and parts, such as bleeding, surface corrosion layer, abrasive dust, sand, dirt, Dewey, and are difficult to install bearing assembly position is not correct; Two battles ErZe education is easy to wear and job losses mount on the surface of bearing assembly quality. Therefore, in the end face neck cushion installed to the shell surface edges and sleeve parts, washers, plate, and examined the mating surface. Such as rust layer, usable fine sandpaper file, interrupt, and remove parts surface and bearing assembly connection.
Bearing use
Note: the use of rolling bearing is precision components, but also need to be cautious accordingly. Anyway, if you use the improper use of high performance bearing without getting expected performance. Bearing use relevant considerations are as follows:
1) keep the bearing and clean surrounding. Even if the eyes can't see the little dust, will also affect the bearing. In order to keep clean, no dust, around the bearing.
(2) the use of. Be careful. When used, the bearing has strong impact, leading to depression scar and accidents. Severe cases, the crack fracture, so must pay attention to.
3) management tool. Use a success. Avoid to use existing tools and associated tools. Such as special glass, news, etc.
4) pay attention to the bearing corrosion. Because the operation of hand will cause of rust. Pay attention to the hand, it is better to wear gloves operation.Effect on rolling mill bearing quality damage judgment http://fagbearings.zohosites.com/blogs/post/Effect-on-rolling-mill-bearing-quality-damage-judgment/
5) didn't finish the work before installation, don't damage the bearing packing, in order to avoid pollution.
Considering load factors on the bearing rotating speed should be paid attention to life more sensitive than goods, so, if you like, the shaft of multiple reduction is more likely in some later; If the bearing load distribution and possible and pivot bearing, makes every effort to reduce the axial spacing and goods, and strive to achieve smooth bearing load, avoid shock and vibration, the need to install the bearing parts of the shape and location accuracy is high enough, games, and cooperate with the correct bearing installation precision is good.
In calculation of design model selection of load bearing, bearing may be wood wood payload at work, the calculation results correctly, therefore, widely effective load case and needs to be further studied.
If the bear big load and bearing static don't spin, this system is more negative, between roller and raceway form tiny fingerprints and soon became the feed point, bearing early faults. In this case select need monitoring bearing static load rating, can be more than the equivalent static load bearing.
Other extreme case, by contrast, high-speed bearing natural but not risk, part of the roll body, instead of sliding belt scroll, lead to bearing temperature rise rapidly, decomposition, bearing lubrication failure, so recruiting is to prevent the skid minimum load bearing.
In many cases because of the influence of vibration and bearing load increased significantly, the actual installation error of bearing alignment is not more than () also increases the bearing load, the actual calculation need to download the necessary correction.
Should also be considered in some cases, the axial and radial force produced by the device itself, the shaft parts, the weight of the weight, even after the stress calculation of bearing load, the load of often neglected, but only through the leak.

(1) (of 1 pages)

(Go Up)

Sections: politics (1) business autos (1) jobs (1) career education (1) romance computers phones travel sports fashion health
religion celebs tv-movies music-radio literature webmasters programming techmarket

Links: (1) (2) (3) (4) (5) (6) (7) (8) (9) (10)

Nairaland - Copyright © 2005 - 2024 Oluwaseun Osewa. All rights reserved. See How To Advertise. 46
Disclaimer: Every Nairaland member is solely responsible for anything that he/she posts or uploads on Nairaland.