Needle Roller Bearing K 15X21X21 Best Price

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900000 set/month

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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 15x21x21

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


21 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 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

Needle Roller Bearing K 15X21X21 Best Price

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Q:what kind of bearings go into a size 50mm , 52mm , 53mm and 54mm sk8 boarding wheels?
all bearings are the same size and all wheels have the same size inner part where the bearings go so that the always fit
Q:Good skateboard+bone swiss bearings for under 90-80$?
A Keep in mind that if you go with the pro set, after your deck breaks you only need to spend 60 on a new one since you can save the trucks wheels and bearings.
Q:how do i clean my skateboard bearings?
lucky and reds
Q:Is it true that you don't need to clean roadbike wheel bearings and it is very hard to do so?
a squeak could be 25 different things those bearings are not it and it isn;t your ''tire'' wle
Q:Changing the bearings on a Krooked longboard?
Q:Skateboard bearings problems/cleaning?
I'd advise getting some lube for them, preferably bones speed cream. that will make your reds perform like super swiss. Just give the bearings a little clean to get the grit out, put them back in the wheels then take the little red caps off and put a few drops of lube in there. after that just give them a good few spins to work the lube in decently and that should be it.
Q:how to put on the skateboard bearings?
Silver out it does matter because you dont want dirt getting in your bearing and f-ing them up. Spacers are seperate from the bearing their just little cilindrical tubes.The easiest way to put bearings on is to put your bearing on the truck your wheel then press down on the wheel same for the other side.
Q:what are the best bearings to buy for my longboard?
Q:greasing bearings on boat trailer?
This is a little messy but it works. More than likely, you will have to remove the dust caps on the end of the axle. These can be pried off with a screw driver and replaced by tapping with a leather or rubber hammer. If you don't have one of these, use a block of wood between the hammer and cover. There should be a cotter pin holding a keeper and castellated (notched) nut on the axle nut. Remove the cotter pin and don't destroy it. If you have new ones, reassemble using them. You can use the old ones if they are not damaged. Remove the bearing and clean it in solvent. Gasoline or charcoal lighter works fine. Remove all the old grease. Let it evaporate. You can use rubber gloves or a clean plastic bag or just your bare hands, if you don't mind getting messy, for the next step. Place a hand full of grease in your hand and squish the fresh grease through the bearing. Reassemble without the retainer. Tighten the nut to 15 ft. lbs. if you have a torque wrench and back off and tighten as much as you can with your fingers. If you don't have a torque wrench, use a channel lock pliers. Be careful and tighten the nut until you can no longer hold the pliers closed. Back the nut off and finger tighten.
Q:i have a question about skateboarding bearings?
Yeah guy. for sure which will be nice. i have executed that earlier at the same time as i replaced into youthful because I had no longer some thing else lol. Yeah, in simple terms positioned it on and roll your wheels and positioned more suitable on. attempt this for some days in a row and your bearings will be spinning and spinning and spinning!

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