Needle Roller Bearing K 15X21X19 High Precision

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Needle Roller Bearings (needle bearing) is a cylindrical roller with roller

bearings, relative to its diameter, roller both thin and long. This is called needle

roller. Despite having a smaller cross-section, has a higher load bearing capacity

equipped with a thin and long needle bearing roller (roller diameter D≤5mm,

L / D≥2.5, L is the length of the roller), so radial structure is compact, its

diameter size and load capacity and other types of bearings, minimum diameter,especially for radial dimensions limited support structure.


Best Price Needle Roller Bearing K 15x21x19

Precision Rating



C0,C2,C3,C4,C5 is available

Sealed Cap 

Rubber or Metal





Vibration Level code




Seals Type




Bore Size

15 mm

Outside Diameter

21 mm


19 mm

Regular export packing

Plastic drum+White box+ carton

industrial packaging or as your requirement


1 pcs

Delivery Time

3-7 days after receiving your payment  

Payment Terms

L/C,T/T,Western Union

Port of shippment by sea


Place of Origin




Product Advantage:

1.High Precision  Needle Roller Bearing

2.ISO Standard Bearing 

3.High quality &competitive price 

4.Many famous brand is available 

5.Low Noise & Long life 

Our advantages:


1. Manufacturer,the most competive price and good quality

2. Perfect group of technical engineers give you the best support

3.Well-trained group of international sales provide the best service

4.OEM brand aviliable

5.Rich stock and quick delivery


1.Small quantity, can delivery by global express: DHL TNT FedEx ARAMEX EMS UPS.this is door to door.

2.Large quantity, can delivery by air, by sea, this is port to port.



T/T, L/C, Money Gram, Payal, Western Union etc.


Lead Time:

Sample Lead-times: generally 3-5 workdays.
Production Lead-times: 3-5 days after get payment or as contract required


Needle Roller Bearing K 15X21X19 High Precision

Needle Roller Bearing K 15X21X19 High Precision

Needle Roller Bearing K 15X21X19 High Precision

Needle Roller Bearing K 15X21X19 High Precision

Needle Roller Bearing K 15X21X19 High Precision

Needle Roller Bearing K 15X21X19 High Precision

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Q:What symptoms come of bad wheel bearings and ball joints?
popping and thumpin, some grinding noises, vibrations at highway speeds. look at them, it doesnt matter if you know a lot about vehicals or not, thats one of those things just about anyone can tell if their bad.
Q:how to replace rusted bearings and wheels on my skateboard...?
buy new one if rusted - you don't ride it - so buy new one let it rust to
Q:Is it ok to use gun oil after cleaning my bearings?
guy grew to become into old huh..And what do you think of grew to become into used for some years till now Rem Oil even existed? As a Gunsmith, with some years of arms on adventure, there are reward to the two Oil and mild-weight to Medium physique greases. too most of the two will of direction enable airborne dirt and airborne dirt and dirt and debris to adhere to uncovered areas. Grease notwithstanding will artwork superb because of fact the old timer informed you because it does do in fact stay in place greater suited than oil. there's a product called R.I.G. (Rust Inhibiting Grease) that has been around for some years and grew to become into initially designed for use in militia weapons and grew to become into this form of fulfillment, it grew to become into provided on the civilian industry..It nonetheless is rather standard between Gunsmiths besides because of fact the regularly occurring public interior the comprehend. the only disadvantage is the fact that the grease might properly be straight away affected via thickening led to by technique of extreme chilly temperatures. In heat or warmer environments it is an stunning lubricant, yet in addition gives you an stunning preserving coating on firearms....... so a techniques as WD-40 is in touch..basically because of fact the spray can says it is nice for firearms, does no longer propose that it is..WD40 is already inflicting problems whilst utilized to polymer framed longer good....... human beings can learn issues from older those with adventure in the event that they do no longer close their minds.....The old guy is actual...
Q:Should I mix Different bearings?
Only if you took out slow bearings and replaced them with faster ones. If all your bearings run well, mixing them will do nothing.
Q:are cleaning skateboard bearings with eye drops a good way to clean them?
NO water? NO WAY. They are principally water with a few other ingredients. You are not cleaning them if you are putting the drops in and leaving it. You are lubricating them. Water works for a short time but will destroy greases or gels and if you use enough to destroy them completely (or if they were oiled) will eventually rust the bearings. Rusted bearings will never be as good as new. Cleaning involves flushing out old oil/grease/gel/dirt/etc. Water is a suitable cleaning material (but will not reliably remove many lubricants) as long as you dry the bearings before adding new lubricant. If you want to add a little material to free up bearings, just use a little light oil. It is cheap and most hardware stores carry it in small tubes with a needle tip so you can get it in small places. I haven't cleaned bearings in years because I find it better to just get new ones when they are really bad. When I do: I start with lamp oil (desented kerosene) because it will remove any old lubricant that is holding crud in the bearing. Next water with dish detergent to remove the lamp oil (some people just dry them out by draining and relube at this point) Followed by rinsing in water to remove the soap, drain, and rinsing in denatured alcohol to dry them. Then use whatever lube you like.
Q:how do you clean Ur bearings?Ty!?
NEVER use WD-40! EVER. moving on. if you can remove the bearing shield (the little rubber/metal covering on the outside of the bearing), do so. then get a small tub/bucket of soapy water and clean the shields. for the actual bearings, i'd get the Bones bearing cleaning kit. it has a bottle with a shaft on the cap so you can put the bearings on without touching each other, it's only like $5 bucks. if not, just get some sort of bottle with a semi-large opening and put them in without the shields on. what you put in is very important. i use isopropyl rubbing alcohol, but i think you can use anything that's not citrus or water? based. swish them around and change the fluid until there is no more black residue coming out. dry them out with a blast of compressed air. then put in your silicone lube. NOT WD-40. only about 2 drops/bearing. i use Bones speed cream. put the shield back on and put them back in!
Q:two bearings in skateboard?
Q:If bent steering knuckle in accident, do I need to replace the wheel hub/wheel bearings?
Bent Wheel Hub
Q:How Many Bearings Are Required For Hockey Rollerblades?
Longboard = 8 bearings Hockey skates = 16 bearings in both skates So you could use them for your hockey skates OR Use them for your longboard which will leave 8 spare bearings. (you could use the other 8 for one skate only)
Q:Replacing rod bearings 3.3 grand caravan 01?
Well, it depends..

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