Needle Roller Bearing K 15X21X20D Best Price

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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 15x21x20D

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


20 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 15X21X20D Best Price

Needle Roller Bearing K 15X21X20D Best Price

Needle Roller Bearing K 15X21X20D Best Price

Needle Roller Bearing K 15X21X20D Best Price

Needle Roller Bearing K 15X21X20D Best Price

Needle Roller Bearing K 15X21X20D Best Price

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Q:is there a difference between longboard bearings and regular bearings?
Not really. Regular skate- bearings take more of a beating so I tend not to buy overly expensive ones. A long board should definitely get some nice speed bearings. If you clean them regularly and keep them lubed they'll last you forever. DON'T USE WD40 TO LUBE THEM. For cleaning it's ok... because it helps protest them from rust and wear. You can actually buy a specific lube wherever you get the bearings.
Q:Can you soak bearings in canola oil??
You can soak anything in anything. The question is whether you should or not. In the case of steel bearings, they don't soak. They sit in whatever you put them in and are coated by it. My guess is that no food oil is going to be good for bearings used in machinery. Unless you intend to 'cook' them...and you will.
Q:Do you must clean the abec bearings in your scooter? And if so when do you clean them?
ok first thing is first thing is first never clean your bearings with wd 40 it will eat the plastic part of your bearing. clean it in 70 to 80 % alcohol or higher. dip them in and wash thoroughly. Buy special lubricant for bearing which should only cost $5. put the lubricant in the bearing and that should be it. it's the same for every bearing just make sure that you clean them every 2 to 3 months because they get clogged with dirt and such
Q:Are K2 rollerblade wheels interchangeable with most other wheels? Are the bearings?
This Site Might Help You. RE: Are K2 rollerblade wheels interchangeable with most other wheels? Are the bearings? I have inline skates manufactured by K2, I need new wheels, and maybe bearings, I noticed that non-brand names are cheaper, are most common types of inline skate wheels and bearings interchangeable?
Q:Where can i get new ball bearings for an airsoft 40mm grenade.?
Airsoft belongs in different - outdoors interest. You heard precise. They intentionally manufacture airsoft grenade launchers somewhat too small to chamber a genuine 40mm grenade . it somewhat is to stay away from the possibility of duplicate launchers being changed to settle for stay rounds. for a similar reason, they do no longer look to be allowed to make airsoft launchers with good rifled barrels (some have pretend rifling which looks precise from a distance, yet is relatively opposite rifled - raised ribs in preference to inset grooves).
Q:what kind of bearings go in a bmx rear hub?
They are probably 1/4 or 5/32 diameter balls, but the rest of your question leaves me wondering. The hubs that your bike has are quite OK for the grade of bike you have, and just replacing the bearings will have no effect- or if anything a negative effect- on the operation of the hub. Keep in mind that the bearings run on cups pressed into the hub and on cones that are threaded onto the axle, so replacing bearings on a new bike without upgrading these items is useless. By the way, my guess is that the cups and cones can't be upgraded. I suggest that you leave what seems to be a brand new bike alone and stop trying to improve on something that doesn't need it. If you have some problems, see you dealer and explain it to them- chances are any adjustments will be free (or cheap).
Q:Question about wheel bearings?
check your suspension joints and mounts
Q:best 'over the counter' lubricants for my skateboard bearings?
Clean with denatured alcohol - available at hardware stores Lube with Tri-Flow - bike shops and some hardware stores.
Q:What are some fast skateboard bearings bearings?
Black panther's are pretty fast.. Bones bearings are some of the best ... Both of these bearing brands for sure if you looking for speed,quality durability.. As you know thou the best are always expensive for a reason but probably worth it....
Q:Cost for replacing front wheel bearings, hub and an alignment?
This Site Might Help You. RE: Cost for replacing front wheel bearings, hub and an alignment? I went to Les Schwab and got my car checked out after I heard a clicky noise. I told them to check the bearings. They did and said they needed replacing and were in bad shape. They called me and gave me a quote for $500. Is that too much for replacing the wheel bearings, hub and an alignment?

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