Needle Roller Bearing K 15X21X21 Best Price

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Shanghai
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TT OR LC
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1 set
Supply Capability:
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.



Product

Best Price Needle Roller Bearing K 15x21x21

Precision Rating

ABEC1,ABEC3,ABEC5

Clearance

C0,C2,C3,C4,C5 is available

Sealed Cap 

Rubber or Metal

Paypal 

Acceptable

OEM

Accept

Vibration Level code

V1,V2.V3

Material

Gcr15

Seals Type

ZZ/ZRS.RZ/RS. Open

Mass

 0,0145kg

Bore Size

15 mm

Outside Diameter

21 mm

 Hign

21 mm

Regular export packing

Plastic drum+White box+ carton


industrial packaging or as your requirement

MOQ

1 pcs

Delivery Time

3-7 days after receiving your payment  

Payment Terms

L/C,T/T,Western Union

Port of shippment by sea

Shanghai,guangzhou,qingdao

Place of Origin

China

Samples

Available

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

Shipping:

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.

 

Payment:

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:Working principle of one-way needle roller bearings
One way bearing is a type of bearing that can only be turned in one direction and locked in another direction.The metal shell of the one-way bearing, contains a lot of rollers (or needle ball), and the rolling block (acupoints) shape so that it can only roll in one direction, (because the installation direction of the rolling direction opposite spring, so spring is compressed). In another direction when the rolling direction and spring mounting same direction, not to cause the compression spring, up roller, roller to produce a lot of resistance in between the inner shell and outer shell (the so-called "one-way"), stop rolling bearing.
Q:How much speed can the needle bearing of inner bore 17mm bear?
This depends on the lubrication, lubricating oil viscosity, pressure is different, allowing the speed is also different
Q:Needle roller bearing model NK what does it mean?
Outer ring double block (or double lock ring) with cage, needle roller bearings NA, NKI, NA and NKI bearings without inner ring, that is, RNA, NK needle roller bearings
Q:What is the needle roller bearing model with outer diameter 21 and inner diameter 16?
The needle roller bearing model with an outer diameter of 21 and an inner diameter of 16 does not exist.The needle bearing type with an outer diameter of 21 and an inner diameter of 15 is BK1512 or BK1516.The needle bearing type with an outer diameter of 22 and an inner diameter of 16 is BK1612 or BK1616.
Q:What are the differences between cylindrical roller bearings and needle roller bearings?
What are the differences between cylindrical roller bearings and needle roller bearings? In particular, if the roller and needle diameter is about the same, cylindrical roller bearings and inner ring needle roller bearings seem to be difficult to identify it
Q:Needle roller bearings are how to process the needle, so smooth finish?
The process of needle: blank forming, deburring, heat treatment, coarse and fine grinding, end rolling surface, super finishing rolling surface polishing or sawdust.For flat head or taper head needle roller, such as blank forming, it is difficult to guarantee the length and size tolerance, and the grinding double end process can be increased. If the convex generatrix rolling surface is needed, it can be carried out directly in the process of super finishing, rolling or channeling.Needle roller bearing (needlebearing) is a roller bearing with cylindrical roller, relative to its diameter, the roller is thin and long. This roller is called needle roller. Although it has a small section, the load bearing capacity of the bearing is still high, with thin and long needle bearing roller (roller diameter of D = 5mm, L/D = 2.5, L roller length), so the radial structure is compact, the minimum diameter of the diameter and load capacity and other types of bearings, bearing the same, especially for the radial installation size limited. According to the use of different occasions, can choose the inner ring of the bearing or needle roller and cage assembly, the shaft neck surface and the surface of shell holes matched with a bearing directly as the bearing inner and outer rolling surface, in order to ensure the load capacity and operating performance and have the same ring bearing, shaft or housing bore raceway surface hardness the machining precision and the surface quality of bearing ring raceway and similar. This kind of bearing can only bear radial load. The needle roller bearing for stamping outer ring is needle roller bearing with thin stamping forming outer ring.
Q:Needle roller bearing is also called cam bearing?
According to the ball bearings, there are ball bearings, cylindrical roller bearings, tapered roller bearings, needle roller bearings belong to cylindrical roller bearingsIt seems that the cam bearings have not been heard
Q:What are the differences between needle roller bearings and cylindrical roller bearings?
Mainly the difference between rolling bodiesThe needle length and diameter ratio (aspect ratio) is greater than 3, less than 5 mm in diameterThe cylindrical length and diameter ratio (aspect ratio) is less than 3, greater than 5 mm in diameter
Q:Cylindrical roller bearings and needle roller bearings is the same thing?
It's certainly not the same thing. Look at the mechanical manual. Top of it. See what you've got
Q:Dimensions of needle roller bearings
There isn't such a strong needle roller. But look at the picture. It's likeHave not seen in kind, in terms of size, there is a support roller meet, estimate and reference it, not necessarily accurateBrand: Germany INA NATR30 if the seal is: NATR30UUThe following diagram: small d:30 D:62 C:28 B:29Cheaper to use in Japan, IKO, model is: NART30

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