10 Things to Consider When Buying NTN Bearings Distributors

A bearing is a mechanical component whose function is to guide a rotating assembly. The bearing therefore allows the rotation of one element relative to another.
Bearings are therefore high-precision parts that allow equipment to move at different speed levels by efficiently transporting notable loads. They must offer high precision and durability, as well as the possibility of working at high speeds with minimal noise and vibration.

You will get efficient and thoughtful service from Beijing SKF.

This type of device is found in all applications such as, for example, the automotive industry, the aerospace sector, construction equipment, machine tools, etc.

There are several types of bearings, the four main types are: ball bearings, cylindrical roller bearings, tapered roller bearings and needle bearings.

While ball bearings are the most common mechanisms, each device has its advantages and disadvantages. That is why we recommend that you compare each of these bearings to determine which is the ideal system for your requirements.

When choosing a bearing, you must consider several important factors. The first factor to consider is the load that the bearing can support.
There are two types of loads:
– axial load: parallel to the axis of rotation
– radial load: perpendicular to the axis

Each type of bearing is specifically designed to support an axial or radial load. Some bearings can support both loads: in this case we refer to a combined load. If you have to support a combined load, for example, we recommend that you choose a tapered roller bearing. If you need a bearing capable of withstanding a high radial load, then we recommend a cylindrical roller bearing. On the other hand, if your bearing needs to support lighter loads a ball bearing might be sufficient as they are often less expensive.

Rotation speed is another element that should be considered. Some bearings can withstand high speeds. The presence of a cage for cylindrical roller bearings and needle bearings allows for greater speeds than bearings without a cage. However, the choice of a higher speed is sometimes made at the expense of the load. You should also consider the possible presence of misalignment; some bearings are not suitable for this situation, such as double row ball bearings.

You will therefore need to pay attention to the bearing construction: insert and spherical bearings make it easy to support these misalignments. We suggest that you lean towards bearings with automatic alignment which automatically correct alignment defects caused by shaft bending or installation errors. Similarly, operating conditions are very important when choosing the ideal bearing. It is thus necessary to analyze the environment you will be using the bearing in. Your bearing may be subject to a number of contaminations. Some uses can lead to noise disturbance, impact and/or vibration.

Your bearing must therefore withstand this impact on the one hand and not be an inconvenience on the other. Another essential element to consider is the bearing life. Several factors, such as speed or repeated use, can impact the bearing life.

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For more information, please visit NTN Bearings Distributors.

Choosing a sealing system is essential in order to ensure the correct and long-lasting operation of a bearing; it is therefore important to ensure that the bearing is always well-protected from any impurities and external agents, such as dust, water, corrosive fluids or even used lubricants. This choice depends on the type of lubricant, the ambient conditions (and therefore the type of contamination), the fluid pressure and the rotation speed. To give you a good place to start, the fluid pressure is a determining factor in the choice of sealing system. If the pressure is high (in the range of 2-3 bars for example) a mechanical seal is ideal. Otherwise, the choice will be directly linked to the type of lubricant, grease or oil. For example, for grease lubrication the most commonly used solutions are: deflectors or washers, narrow passages that are machined or with grooves; in the case of oil lubrication the sealing system is often accompanied by the presence of a groove for oil recovery.

Conditions of use can also influence your choice, especially when it comes to assembling the bearing. The rigidity and precision that your use requires must also be taken into account. In some cases, you can provide for the application of a preload in the assembly of your bearing to increase its rigidity. Additionally, the preload will have a positive impact on the bearing life and noise level of your system.

Be careful, in order to choose the preload (radial or axial) you must know the rigidity of all parts through software or experimentation. In your selection criteria, you must also consider the ideal material for your bearing. Bearings can be made out of metal, plastic or ceramic. The bearing material depends on its intended use. We recommend that you choose the most compression-resistant bearing. Keep in mind however that the material used affects the price of the bearing.

Each type of bearing can be deep-groove, spherical or insert. Deep-groove bearings are the most common. Insert bearings are deep-groove bearings which, like spherical bearings, effectively support misalignment.

They differ from spherical bearings in that they have a smaller swivel angle. The larger the swivel angle, the more the bearing will withstand misalignment.

Another factor to consider: depending on the use, you will need a rotating shaft (for example wheel drive bearings for cars) or a rotating hub (like for washing machine bearings).

Then you will need to pay attention to how the bearings are assembled. If two bearings are too close together, you should use the O-assembly method so that the bearings do not interfere with each other. If this is not the case then the X-assembly method is perfectly suitable.

Finally, each bearing has specific dimensions. These dimensions, expressed in mm, are subject to international standards. We therefore advise you to pay attention to the bore of the bearing, i.e. the inner diameter (always represented by the letter d), the outer diameter (represented by the letter D) and the width (represented by the letter B).

If you want to learn more, please visit our website Bearing Accessories.

Sw OntarioWe are using NTN pillow block bearings, the ones with the flinger seal, in our beet harvester but I'm disappointed about their longevity.
They are in tough muddy conditions but some only last for one season, which is 40 hours of running.
During that time we grease them 2 times.
What are your thoughts about them ?
I would like to use SKF bearings but they are almost impossible to get according to my supplier.
And maybe Timken makes better ones but they don't make metric sizes.

TIA for your comments.

TexasZ.A.Enterprises - 10/22/ 13:18

We are using NTN pillow block bearings, the ones with the flinger seal, in our beet harvester but I'm disappointed about their longevity.
They are in tough muddy conditions but some only last for one season, which is 40 hours of running.
During that time we grease them 2 times.
What are your thoughts about them ?
I would like to use SKF bearings but they are almost impossible to get according to my supplier.
And maybe Timken makes better ones but they don't make metric sizes.

TIA for your comments.

Grease them every day .I know on tomato harvesters, I experimented this year with a higher load pressure carrying ability grease and had no failures even on bearings I figured were sketchy before the machine hit the field. Greased twiced daily in 12 hours or so of run time. Also, I personally feel a pistol grip manual gun is better for what I mentioned above, seems the power grease guns are harder on the little triple lip seals in the small ball bearings. Again, just my opinion, but seem to have the data to back the thought up.



NC IowaNTN is one of about 3 great bearing companys. Many others are ok depending on the appication. For some applications i will get Chinese bearings at tsc. I always regerease before use, as poor quality grease is the main fault on some cheap bearings.

What bearings came on tbe machine and how did they last? Maybe grease daily if that is what it takes.

Edited by gene_champ 10/22/ 19:32




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west-byGod-Pa. (1 ) Sent your question along to someone who may have an answer
(2 ) Three greases: (1 ) LE (LUBRICATION ENGINEERS )- red grease: sold thru Mfg'rs Reps: Look them up on-line. Terrific
(2 ) SWEPCO-Southwest Petroleum: #105-Barium carrying HD grease: Same as above on-line. A rep might insist on selling you their
#131 (? ) red grease as a "farm" grease. I will put #105 up against anything for any reason other than HI-speed motor bearings
(3 ) Morey's Red synthetic. Here-rarely available, but in a NAPA store. Know of the testimony of a deep mine with miles of conveyors:
could not keep running for belt roller bearing failure. Mgr. just happened on Morey's in NAPA-fixed the problem permanently

west-byGod-Pa.I suugest checking else where for a supplier. I cannot know specifics of your application, but have been aware of occasions in business where someone was pushing product as "house-brand", & may know something else is available, but does not want to (or cannot ) supply that something other. I am not saying your supplier is not good- I just don't know the situation first-hand, and as I say, have known of other situations wherein a supplier could have sent some one else where for help, but chose not toI have post this before, but it get my every time when people look for
cheap and not quality. All companies make different versions all based
on price. when you go to farm parts store like NAPA or on-line you
are getting the cheapest consumer grade parts. If you want industrial
grade stuff you need to go the a good industrial supply. When Suncor
needs a bearing they get from a dealer or major industrial supplier.
When a farmer wants a part he looks for cheapest.
I see it all the time with air filters and oil filters. You think
you are getting the same part for less, but you are not.

central mich

We sell pretty much 100% Dodge pillow block. And 99% of those is to gravel plants. Kind depends what pillow block you are using and shaft size. In dodge the SC is normal duty and SCM is called a medium duty. The SC, SCM has the standard housing size 204 through 210 but the SCM has larger bearing. Then the type E , S- and others are another step above in durability and strength.
NTN is a good bearing and we have used some in shaker screen bearings which are pretty severe duty. Mostly FAG and SKF but we will use some NTN. Some of the shaker screen bearings are fairly large and weigh 40 lbs or more. Same thing with jaw crusher bearings.

Sw OntarioOK guys, I'm not getting many answers on my question: What are your experiences with NTN pillow block bearings.
Grease them every day, of more should not be necessary with a bearing like that. I buy the best quality NTN makes so I'm not cheaping out. The original bearings on the machine are/were SKF Yel which I would like to buy again but like I said in my post, they seem to be almost impossible to get, according to my supplier who is by the way a SKF distributor. Might have to go to Europe again to get them.

Redickville, OntWell I grow potatoes and the bearing are in dirty conditions. I've had good luck with ntn bearing. I'm not sure what flinger seal is. We use triple lip seal bearing they have a steel seal and have bit of a bump around seal. We do not wash diggers unless there really bad then stay away from bearings. Years a ago dad use to wash everything and put it away and said that was a big mistake. Seem like every time we got them out a bearing would gone. Since he quit never change one. We also use piece plastic if your using sqaure flange bearing and cut hole centre just big enough for shaft to come threw. It acts as a dirt shield for bearing and has been working great. I'll get couple pictures when I get to the shop.Fafnir triple sealed self aligning bearings would be my recommendation. Available as both sealed and relube style. Should be easy to find size for your shaft and also should fit your cast pillow blocks themselves. I get mine from Baum Iron in Omaha NE. Would strongly recommend sealed versions to avoid relube problems with too much or too little grease as well as grease compatibility. NTN bearings probably good but know little about them and their sealing options. Triple sealed recommended for 500 or less rpm. Good luck


thumb of miWe rarely had bearing problems on the lifter we had. 692b. Doing ish acres a year. Some weren't greased. we fought bent rolls due to stones. There is some guys up here that make rolls and have many custom lifter parts. They have done some research on bearings too. Can give you there number drop me a . Lifters have a hard lifeI'm with the others...

Do some research on grease. DO NOT USE A MOLY GREASE IN BEARINGS.

For grease I special order paragon from texas refinery. Mine is a pin and bushing application where pound out is the big issue, so this grease works well for that, without sacrificing bearing use.

Also, if the bearing is failing after a season of storage, water may be your issue.

Monitor the bearing for heat during use. If its generating heat, a lower end grease may melt away.

I don't know why farmers are so cheap when they go buy bearings. Buy the best quality for your application, bearing manufacturers do have different qualities for different markets. 99% of farm bearings from Napa, A&I etc. are junk, they all compete on price.
You want a buy a cheap bearing and that's exactly what you're gonna get.