B2B Electronics

In terms of an oil seal, there are a lot of different types. Depending on how they are constructed, U-ring oil seals as well as block vee rings can be used as a rod seal, a piston seal or even a symmetric seal. U-rings and block vee rings are called single acting seals, also known as unidirectional seals, and have to be mounted back to back in cylinder applications that are double acting. A Block Vee seal is really more compact and performs better under high pressure conditions than a U ring does. V ring seals are made of all rubber and are primarily used to get rid of dirt and other types of contaminants. V rings are stretched over a shaft and sealed against the side of housing or another type of machine component. Besides, more oil seals are introduced as there are several different kinds of clearance seals, also known as labyrinth seals. The one feature they all share with each other is that they all work on a principle of positive clearance. This means that there isn’t any rubbing that occurs against the shaft or the housing.

A lot of labyrinth seals are made up of a rotor, which rotates, and a stator, which is static, piece with a radial gap between the two pieces. The gap has to be bigger than the radial clearance of the bearing that is being sealed. Also, the operating speeds as well as the temperature have to be considered when utilizing a labyrinth seal. These kinds of seals typically don’t perform very well at lower operating speeds. Another type of labyrinth seal is a laminar sealing ring, which utilizes a series of flat metal rings, similar to washers, of different diameters to make a labyrinth seal. Bearing isolators are a dynamic kind of seal that is designed to keep bearings protected from outside elements. They are also made up of a rotor, a rotating piece, and a stator, or static member. Some bearing isolators are made out of labyrinth construction but others use O rings or other kinds of positive seals.

More about oil seals and check it out now!

Article Source: http://EzineArticles.com/?expert=Lori_Prince

Article Source: http://EzineArticles.com/3067893

A pallet truck, also know as a pallet jack or pump jack, is a manually powered fork truck designed to lift and move heavy materials. The front wheels are placed on the inside near the forks at the front. At the back is a hydraulic jack which is used to lift the pallet off the floor.

How do use a pallet truck? 

Being manually powered the person operating the truck pushes the forks into the pallet, and then uses the jack part of the truck to ‘jack’ up the pallet off the floor to a certain height required. Once the pallet has been lifted the operator can then move the truck where ever they wish, the pallet is only listed off the ground so it can be moved, and so a foot or so is usually normally.

Powered pallet trucks

Pallet trucks are also available powered. It is the same principle as a manual pallet truck except instead of the operator having to jack up the pallets the machine lifts it for you via controls. This is easier to use as the machine does most of the work for you and they can lift heavier pallets if required.

Who uses pallet trucks?

Generally speaking pallet trucks are used by people who are suppliers and work in warehouses. This can be in a variety of fields such as food and drink, clothing, computers, machinery and so on. Any industry that requires moving about large and heavy pallets of products will use a pallet truck.

How much do pallet trucks cost?

Many companies will differ slightly in the cost of their pallet trucks, and depending on the type of pallet truck will alter the cost as well. You will be able to pick up a regular pallet truck for around £130. Searching online or visiting different shops you’ll be able to gain more of an idea of the prices available.

Pallet Trucks

Article Source: http://EzineArticles.com/?expert=Beth_Fork

Article Source: http://EzineArticles.com/2233566

It has been interesting over the years to see how words morph so quickly in the computer IT arena. A good example has been how the term server rack evolved from the phrases enclosure cabinet, data cabinet and computer rack that was made to hold computer hardware on 19″ EIA rack rails.

Most of these type enclosure cabinets were shallow from 20″ to 25″ deep and were basically the same for many years. Things began to change when deeper cabinets were needed as blade servers became more popular several years ago. Until blade servers entered the market, most servers were towers or 15-20″ deep that could be rack mounted in 4U-8U space.

Many popular blade servers were designed to only take up 1U-4U of space. This created the opportunity to put a lot more servers in a computer rack. An interesting problem was created however when blade servers were put in such a small “U” space. The servers became much deeper, up to 42″ deep in some cases, and also ran much hotter. Heat disperse was addressed by pulling air from the front of the server and blowing it out the back.

These deeper hot running servers no longer worked well in a conventional enclosure cabinet or computer rack and a new style computer rack was developed. This cabinet had to be deeper and allow for airflow from the front to rear to keep the servers from burning up. The industry term began to morph to server racks.

The rack rails of the server racks also changed from a long time standard of 10/32 tapped rack rails to a punched square hole that held an insert for a 6mm cage nut and screw. Dell, along with other manufactures, makes sliding rails that attach to the server rack with a special flange that fits into the square hole without the use rack screws.

Currently, server racks are made in many versions. Some have a combination plexi door with special vents cut in the frame for the front door and a screen rear door. Other server rack versions have a locking screen door in front and a double screen door in the back to save space as it opens into an aisle.

Leslie Parker is Expert author in making articles for business, server rack, computer cabinets, server racks, wallmount portable rackmount cases, computer rack, PDUs, rackmount powerstrip, Digital Multimeters and Ecommorce etc. I have made many articles on Rackmount products too.

Article Source: http://EzineArticles.com/?expert=Leslie_Parker

Article Source: http://EzineArticles.com/4199319

Cheng Feng has been producing Ductile Cast Iron (Ductile Iron) for over thirty years. Ductile iron, iron casting, and ductile cast iron are specifically useful in automotive components, and for architectural and engineering solution. Contact us regarding any inquiries of your ductile irons.

Not only Cheng Feng imports newest production equipments from Japan and America for top of the line products, but also they have participated Meehanite Foundry Association of Japan, to be under the supervision and guidance in foundry technology.

Furthermore, Cheng Feng sends their technicians regularly to Japan for training while they have also hired senior technician periodically from Japan to be as instructor at their plant.

Therefore, it is small wonder, Cheng Feng’s products not only widely accepted in the application of machinery industry domestically, but also welcome in Japanese market.

If you are planning to buy a quality LED flashlight, you should make sure that it would be able to provide good and clear lighting. There are many flashlight manufacturers in the market, who are providing super bright LED, which can be used in dark areas. These LED are capable of lighting up to 300 meters. This is a marvelous discovery of the new and advanced technology. Even though LED was in the market from many years, most of the people did not know the real benefits of it. As people started using it for different purposes, LED manufacturers started producing more advanced and powerful LED lights.

However, installing LED to cars has become a new trend today. Most of the people who look for an option to modify their cars and other vehicles use LED bulbs. Even though most of the people use the ordinary LED bulbs, few opt for super bright LEDs, which will provide them more power beams than the ordinary ones. These LED come out with four output levels; therefore, you have an option to set it to low, medium, high or with turbo.

If you research on the web or visit your nearby store, you will be able to find different types of super bright LED, which are obtainable in different colors. Apart from the car modification, LED is also used for many industrial purposes. These bulbs can be also fixed for bikes with the help of a LED kit. Finding the right accessories for your vehicle is very important as it might nhance your driving experience.

Super Bright LEDs

Article Source: http://EzineArticles.com/?expert=Faisal_Farrukh

Article Source: http://EzineArticles.com/3710498

Like yin and yang, one cannot function well without the other. If you can not make friends with the first one, you cannot make friends with the other. That is how composite materials work. But once these materials joined their unparalleled qualities, it is a brand new sybaritic delight! We always come across these words – composite materials. But have we really thought of what these materials really are, what are their uses, and what’s in store for us when we use them? This article will walk you through about the basics of this product.

By the word itself, these materials are made of two or more different materials combined together. However, they do not form an entirely new discovery. They still manage to maintain their own identities and how they complement each other. One factoid on this matter is that we may not be aware of it, but these essential substances are often, used from generation to generation. These are often reinvented to bring out the best from these ingenious things. A simple example of this is concrete. It is made of cement and gravel. Cement’s quality as a binding product works best when aided by gravel that plays as the back bone, or the reinforcement. In this case, composite material usually has two constituents – a binder and reinforcement. Whereas binder, commonly called the matrix, helps in protecting the back bone, or the reinforcement; the reinforcement, on the other hand, holds together what the binder sets its place. In this regard, both materials efficiently work its synergy to the fullest.

These materials become a part of our every day lives. In fact, we may only be slightly aware of it, but as we use our bath rooms, we see our bath tubs and shower stalls made of fiber glass; or even counter tops and sinks made of marble.

These composites found its way to be popular when new inventions with high performances rely on their qualities as being light weight, yet durable and strong to stand the test of heavy loads. This has been proven true when manufacturing parts and accessories of air planes, space shuttles, and racing cars. Recently, these products are in soaring popularity when even sports products needed them for better performances. Some examples are base ball bats, fishing rods, storage tanks, bicycle frames, and even in hulls used in boats and sculls. Surprisingly, even in the field of medicine and science, composite materials are also widely used as in the case of some instruments used for orthopedic surgery.

A lot of the composites consist of plies or layers, with added reinforcement and binder joining together each ply. In this case, the product will result into being moldable. This is also highly noted by aircraft engineers and designers as they take into proper consideration some factors involving their projects like how the mold can stand in different stresses like water or even chemical erosion, changes in temperature, and external forces.

So long as there is much need and demand for these composite materials, whether in the field of aero dynamics, sports, science, technology, medicine or just the urge of creating something out or something, we can be sure that these products are here to stay for our benefit.

Wes Collins spent years of studying the properties of composite [http://www.ultralightcomposites.com] materials and how they can be used by ordinary people in daily lives to the fullest.

Article Source: http://EzineArticles.com/?expert=Wes_Collins

Article Source: http://EzineArticles.com/5347583

Established more than 40 years ago, Minchen Gear Co., Ltd. may be the most experienced, specialized developer and manufacturer of bevel gears in Taiwan. The entire factory are equipped with GLEASON machines, such as Hypoid Cutter Sharpeners, Cutter Inspection Machines, Hypoid Generators, Hypoid Testers, and Hypoid Lappers, which can carry out any cutting methods developed by GLEASON.

Minchen Gear Co., Ltd. provides a diversity of products based on our customers’ demands, including spiral bevel gear, straight bevel gear, helical gear, precise forging gear, custom-made gear and even any odm gear. The Module range we are able to provide our customers is between MP1~MP15; the highest speed ratio is up to 10, the maximum outer diameter is 600 mm, and the gear precision can reach JIS 3(AGMA 11) after heat treatment. For the past 40 years, Minchen’s high-quality and precision gears are generally adopted in agricultural machines, automobiles, ATVs, speed reducers, machine tools, watercrafts…etc., and are exported worldwide to Japan, USA, Italy, Singapore, Thailand.

Minchen retains the concept of superior innovation and devotes to R&D globally. In order to achieve the leadership in technology and quality, Minchen has a R&D Lab, executed by two professionals with Ph.D. degrees in gear manufacturing, and furthermore keeps cooperating with domestic education institutions for advanced research. Minchen has a fully-integrated supply chain, maintained by associating with subcontractors specializing in different fields, and mutually benefits through this kind of long-term and reliable corporation. In recent years, Minchen is also certified by ISO 9001 & TS 16949, we strive to become the best bevel gear design manufacturer in Taiwan, or even worldwide, and quality, to us, is what we care the most.

Biometric Technology enables identification of person based on intrinsic physical characteristics. There are several body parts which are commonly used for biometric identification such as fingerprint, face, iris, and palm. Fingerprint is the one that most widely used for identification system. Besides showing unique pattern for each person, fingerprint also possess other attributes that make it popular biometric object such as easy to capture, consistent throughout human lifespan and enable quick verification.

Today, fingerprint time attendances have been widely used as standard office equipments. Its usage encompasses variety of purposes. It is used for controlling the physical security access, authenticating privilege for particular business process, and also recording time attendance. This article mainly discusses the last issue, which is to help you to choose fingerprint time attendance as a time attendance recorder. Here are several features that you must consider when choosing fingerprint time attendance:

• Type of Sensor: sensor is the most important part of fingerprint time attendance. It captures the image of fingerprint before being converted into unique identification number. There are two most common types of sensors: optical sensor and silicon sensor.
• Optical Sensor is the oldest type of sensor. It is easier to implement and relatively more stable in diverse room temperature. However its performance will be highly dependent on the clarity of the optical surface. For this reason, when choosing fingerprint time attendance with optical sensor, you should consider the coated optical sensor. The coat prevents the sensor from being touched directly and maintains the clarity of optical surface.
• Silicon Sensor is newer technology, it constructs fingerprint image by mapping pressure or capacitance differences between the skin and the silicon chip. This technology offers several advantages like producing a more accurate fingerprint image, occupying smaller space, and requiring smaller to budget implement. However, unprotected silicon sensor will not be durable for frequent usage. Consequently, Silicon Sensor is not commonly used for public usage such as time attendance machine that will be accessed hundreds of times everyday.
• Capacity of Fingerprint Template: capacity of fingerprint template is maximum number of fingerprint image that can be stored within the fingerprint time attendances. It is advisable to choose a fingerprint time attendance that has fingerprint template at least twice the maximum amount of employee. By having number of fingerprint template twice the amount of employee, each employee can register a backup finger if the machine has a problem for identification.
• Capacity of Log Buffer: capacity of log buffer is the maximum number of log transactions that can be stored temporarily inside the fingerprint time attendance. Time attendance transaction log is usually stored for several days before being downloaded into database sever. Therefore, the capacity of log buffer must be several times (usually more than five times) bigger than amount of employee.
• Identification Speed: identification speed is the average time required by fingerprint time attendance to identify a person based on his or her fingerprint pattern. The process comprises scanning the fingerprint, searching, and comparing the fingerprint pattern against its own fingerprint database. A good fingerprint time attendance should be able to identify a person in less than 1-second.
• Standard Error: fingerprint time attendance cannot work perfectly all the time. It may wrongly identify the fingerprint pattern. There are two types of identification error: FAR (False Acceptance Rate) and FRR (False Rejection Rate). False Acceptance Rate is the percentage of machine to grant access the impostors. Meanwhile, False Rejection Rate is the percentage of machine to reject access by authorized user. Fingerprint time attendance should have as low as possible FRR and FAR. A Standard quality reference for FRR is below 0.1% and for FAR is below 0.001%.
• Reporting Software: reporting software aggregates the transaction logs and reports in readable format. This software also helps the owner to analyze productivity of each employee. Although not all fingerprint time attendances come with built-in reporting software, it is very important component of time attendance system. It will eventually deliver the result to the owner. The quality of fingerprint time attendance is determined by its ability to deliver reports that meet the business requirements.

There are many different models, features, and capabilities of fingerprint time attendance available in the market nowadays. The most advance and versatile fingerprint time attendance may be not the most suitable for particular company’s environment. The best product is the one that fits the business and technical requirements. It means the machine must have appropriate technical specification that fits the physical environment and number of users. It must also deliver valuable information for managing the human resources productivity.

GriyaTekno.com is building technology supplier and installer based in Indonesia. Visit us to learn more about Fingerprint Products and Access Control System in general.

Article Source: http://EzineArticles.com/?expert=Henry_GT

Article Source: http://EzineArticles.com/5177052

The process of aluminum extrusion is simple and easy however it is very significant to know why extrusion is so important. In general metals like steel and aluminum is put to use in several industries, right from automobile, to telecommunication, transport, utensil manufacturing and at times even in the toy industry. Thus, both of these metals are in huge demand and find place is almost all the major manufacturing industries in the world.

Just after steel, aluminum is the other metal which is hugely popular all over the world. This can put in a manner stating that aluminum is the second most popular metal in the globe after steel. The former is widely available, has impressive properties, and is affordable, light weight, can withstand high temperatures and so on. And above all the aluminum extrusions involved in getting different shapes and forms for suppliers is cost-effective and simple. Both in US and Europe building industry and the telecom as well is highly dependent on aluminum extruded products. These products find a number of usages and are used in many applications.

So, what is aluminum extrusion? This is a process through which aluminum is given certain shapes and forms. It starts with the hot cylindrical billet of aluminum which is pushed through a shaped die. The billet is cut from DC cast log and placed in heated container (450°C – 500°C). When pushed through the die the metal flows through the steel die. The die is placed at the other end of the container. Now, once the log passes it produces a section, this can be cut into shapes either in long length or short. The section is cuts according to the customized demands of the clients since the log is meant to be used for any particular industry. In certain extrusion process rectangular shaped billets. In this process only wide section sized extrusions are produced. This again depends according the demands of the supplier.

Aluminum extrusion is done for several kinds of industry and these aluminum extruded products are very commonly used in building industry. In this industry you can use aluminum in prefabricated houses/building structures, window and door frame systems, curtain walling, roofing and exterior cladding, and shop fronts. Besides, they also find place in the telecommunication and transport industry. In transport industry aluminum extruded products are found in rail vehicles, marine applications, airframes and for vehicles on the road.

So, what makes aluminum so popular? It is the versatility and the flexibility of the material that turns in so popular. Since aluminum is high temperature resistance and is corrosion resistant as well it is used to make utensils and is also used on transport vehicles. Besides, it is strong even though it is light weight and thus it is used in airframes.

So, if you are out there still deciding on selecting aluminum extruded products or some other metal you can give your votes to this metal as it is affordable and durable as well. No more second thoughts to this go ahead with aluminum extrusion and the products.

Anil is executive in an Aluminum Extrusions India Company and here he shares here views on extruded aluminum products and its varied other features and uses

Article Source: http://EzineArticles.com/?expert=Anil_Jhunjunwalah

Article Source: http://EzineArticles.com/4497986

These types of patches became quite popular a few decades back since it can be easily attached to any types of fabric and a highly convenient way identifying a certain organization or company. A quick look at its history, embroidery patches were initially made in large factory machines that have the same size of the ancient looms that was used centuries ago. Embroidery Patches were useful in correcting wholes and tears in uniforms and military wear and now just about anyone, for any purpose uses different Patches. Not only that, embroidery patches can easily be seen everywhere, it is making its strong presence known even in the local gasoline stations and manufacturing plants.

People assume that all Embroidery Patches are the same. However this is not true. In fact, quite the opposite is true. Embroidery Patches are very different from one another. They are available in many different colors, styles and fabrics. Patches can be made to be stain resistant or can be made to attach by ironing. There are many different options the secret is to know what you want in the patches you purchase.

There are so many different options it is hard to list them all. Embroidery Patch can be used as fashion statements and also as a useful form of advertising. It is completely up to you what purpose your patches are going to fulfill.

Nowadays, there is an abundance of designs available in embroidery patches that you can choose from. There are a lot of people who are sporting personalized patches in their jeans and Clothes s as an accent or a way of expressing themselves. So if you are thinking of a great way to embellish your garments or add more character to your otherwise bland piece of clothing, an embroidery patch would be a convenient and cheap accessory that you can use. You can even order a customized one, or provide your own design for a more personal touch.

Embroidery patches can either be a useful method of making your worn out clothes last a tad bit longer or they can be a fashion statement. You be the judge of that. But I ask you, why can’t they be both? A fashion statement and a way to make your clothes last a little longer?

You can also find more info on christening embroidery dress [http://embroiderymile.com/embroidery-designs/christening-dresses-embroidery-a-natural-choice] embroiderymile.com is a comprehensive resource which provide information about Embroidery.

Article Source: http://EzineArticles.com/?expert=Michael_J._Simmons

Article Source: http://EzineArticles.com/1469689