The designs and applications of needle roller bearings

Needle bearings are also known as needle roller bearings. They are bearings that contain small cylindrical rollers. They are important in order to lessen friction while a certain surface is being rotated. When compared to ball bearings, they cover larger surface areas. The structure has a shaft or an inner race, a needle cage, needle rollers and the outer race. The needle cage is where the needle rollers are contained and oriented.

Needle roller bearing for sale is so good! There are actually different designs and applications for needle bearings. The design actually depends upon the industry where the tool will be needed. Below, you will see what these designs are and where the industrial product is being applied.

From the professional needle roller bearing manufacturer,we know there are two basic designs for needle roller bearings: one is the full complement or loose-needle; and the other is the caged-needle bearing designs. The loose needles are those that contain full complement needles with no retainers. They are often found in between components of two hardened machines. These are inexpensive but only have moderate speeds and can often lead to misalignment sensitivities.

Caged needles on the other hand contain cages with specific roller spacing and guidance. When compared with loose-needles, they are three times faster. The needle cage allows for prevention of high-velocity rubbing in between needles that are adjacent to each other plus it also provides better roller guidance. They also produce better lubricant capabilities. With the smaller needles complementing each other, load capacity is reduced.

Alongside the two basic designs are different subcategories. With loose needles, drawn cups are also produced. Drawn cups may also be applicable in caged assemblies. For heavy-duty needle roller bearings, aircraft bearings and cam or track followers are also designed.

Drawn cups for loose needles have spherical-ended rollers with an outer race. This adds up slightly on load capacity for the machine. The caged-needle version differs in the sense that retainers are being used. These provide higher speed with a reduced load capacity. It promises greater tolerance in cases of misalignment.
As the name implies, heavy-duty needle bearings are made out of heavy-duty materials. Heavy outer rings work well with high-precision ground and hardened materials. The load capacity for this design is extremely high.

Needle bearings are often used in farm equipment, construction tools and machinery, small gasoline engines and gear pumps. It is also especially helpful in automotive transmissions, aircraft controls, small appliance and tool motors. Hydraulic pumps, sheave blocks, hoist drum shaft, material handling equipment are also included on the list of needle roller bearing applications.

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Address: Private Industrial Park, Niutang Town, Changzhou City, 213163, China
TEL.: +86-519-86576751
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Needle Roller Bearing

The huge variety of roller bearing products available in the market has made it easy to fix any kind of jobs that require bearing solutions. Be it your bicycle, car, or bike, you now have a variety of options to meet your bearing needs, when it comes to needle roller bearing products and make your life simpler.

This is one of the types available in roller bearing products. Similar to many other roller bearing products, the roller of a needle bearing is cylindrical in shape. However, as against other rollers the dimensions of a needle roller is extremely slender and long. The outside diameter of this product is very small measuring only up to 5 mm but the length of the roller can range up to 10 times of the size of the diameter. Hence, the name needle roller bearing was given to this product. In spite of its slender and small bearing section, it can bear pretty high loads and thus, are ideal for using in jobs with limited radial spaces.

These products are used in all kind of engineering projects. Needle roller bearing sizes and designs vary depending on their usage and application areas.

The three basic parts included in the needle bearing are the inner and the outer shaft, and the needle cage. The shaft is also known by the name of race. Some of the common designs available in the market include the close-type drawn cup needle bearing, needle bearings with and without inner rings, needle bearings without flanges etc. The application area is thus, decided depending on the needle roller and cage assemblies.

These are often used for reducing the friction level that is created in the rotating surface area. One interesting fact about needle roller bearings is that the designs of these bearings can be customized. The customization helps in converting the original design to various types of needle roller and cage assemblies to suit the job requirement. For example, bearings with inner rings are once again available in a variety of dimensions that can be customized and used in different types of generic engineering jobs and automobile needs.

The inner rings are also used as bushings that are considered to be an economical way of using them as additional machines. In order to find out how to do that you must have a detailed operating manual and know the various tricks to use needle bearing products in multiple ways. You will also get to know what are the differences between the various types of needle bearing products available with needle roller bearing distributors and suppliers and how to use each of them.

Changzhou Zhihua Bearings Co., Ltd，the professional manufacturer in China. Contact us: http://www.czhbearing.com/

Address: Private Industrial Park, Niutang Town, Changzhou City, 213163, China
TEL.: +86-519-86576751
FAX.: +86-519-86568019
E-mail: info@czhbearing.com

The Different Types of Bearings and What They Are Used For

There are many different types of bearings used, all have benefits and disadvantages to them and so are used for different purposes and in different circumstances.

Ball Bearing
A ball bearing uses a ball to rotate and move the load. Ball bearings are cheaper than other bearings used such as cylinders in roller bearings and have high accuracy. When moving lighter loads ball bearings do not have as much friction as roller bearings, and can support radial and axel loads. Radial loads are perpendicular to the shaft and axel loads are parallel.

Roller Bearing 
Roller bearings use cylinders instead of balls and usually have a larger diameter. Roller bearings can support radial loads, usually of a higher capacity than ball bearings can, but have higher friction with axial loads. Roller bearings are commonly used in rotary appliances and in machinery.

Thrust Ball Bearing
A thrust ball bearing consists of two steel washers with balls situated within them. They are mostly used for low speed appliances and can't handle heavy loads, for example they can be found in swivel bar stools and turn tables.

Taper Roller Bearing
Tapered roller bearings are used to support large radial and thrust loads. It consists of a series of tapered or conical rollers held in a cage between inner and outer bearing tracks. They are used in many car hubs. The disadvantages to taper roller bearings are that they are usually quite expensive and they add more friction than a ball bearing.

Needle Bearing
Needle bearings are similar to roller bearings but the cylinders are thinner and longer like needles. These are used sometimes as they reduce the friction of the rotating surface. Needle bearings are used in engines and engine parts and transmissions; the drive shaft of a rear wheel drive car has at least 8 needle bearings.

Changzhou Zhihua Bearings Co., Ltd. is a professional bearing manufacturer all over the world. They are devoted to designing best products for many years. If you are looking for best bearing supplier, it will be a good choice!

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