K 19X25X16 Needle Roller Bearing China Supply High Precision

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Loading Port:
Shanghai
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TT OR LC
Min Order Qty:
1 set
Supply Capability:
900000 set/month

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Product Description:

Product Specifications:


Product

Best Price Needle Roller Bearing K 19X25X16

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

 0,0154kg

Bore Size

19 mm

Outside Diameter

25 mm

 Hign

16 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 Applications: 


Needle roller bearings are mainly used in car engines, transmissions, compressors, cranes, etc.


Product Advantages:


1.Bearing Manufactory ( Have our own technical department)

2.High quality products (Long Life and low noise)

3.Well-daserved Reputation (Good Stock Guarantee)

4.Professional service ( Promptly shippment)

5.OEM Service,Sample is available


Packaging & Delivery

Packaging Details:

1.industrial packing 
2.wrap+carton+pallet 
3.colour+carton+pallet 
4.according to your requirements

Delivery Detail:

in stock or 15-30days after P.O

 

QC:

We have complete process for the production and quality assurance to make sure

our products can meet your requirement. And our quality can compare with the

most chinese famous bearing manufacture. we have the same technology. Such as 
1. Assembly
2. Windage test
3. Cleaning
4. Rotary test
5. Greasing and gland
6. Noise inspection
7. Appearance inspection
8. Rust prevention
9. Product packaging



K 19X25X16 Needle Roller Bearing  China Supply High Precision

K 19X25X16 Needle Roller Bearing  China Supply High Precision

K 19X25X16 Needle Roller Bearing  China Supply High Precision











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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
Q:The difference between NK type and NKI type in needle roller bearings
NK and NKI are light series needle roller bearings. The difference is that one with inner ring and one without inner ring. The following problems are shown. Relevant technical data of the model are compared. Are they in line with your requirements?:INA needle roller bearing NK40/20-TVLight seriesFw 40, mmD 50, mmC 20, mmRmin 0,3 mmM 78 g qualityCr 26000 N basic rated dynamic load radialC0r 47000 N basic rated static load radialCur 6700 N fatigue limit load, radialNG 10900 1/min limit speedNB 6400 1/min reference speedINA needle roller bearing NKI35/20-TVLight seriesD 35, mmD 50, mmB 20, mmF 40, mmRmin 0,3 mmS, 0,5, mm axial displacement distanceM 122 g qualityCr 33500 N basic rated dynamic load radialC0r 56000 N basic rated static load radialCur 9800 N fatigue limit load, radialNG 11500 1/min limit speedNB 6200 1/min reference speed
Q:Roller needle roller bearings can be used directly as a wheel?
Yes, but it is not recommended.I. cost valueThe KR58 driven roller bearings are of great value. The purpose of the design is to maximize the effect with minimal cost, and the cost of the bearing is undoubtedly high. For example: ordinary 6306 bearings, a single bearing can withstand 1500 kilograms of weight, with 10 can be, the value of KR58 is much smaller.Two 、 operation flexibility and endurancePlain ball bearings are much more flexible than roller bearings. They are easy to purchase on the market, and it is easy to solve the problem of poor working conditions with bearings with sealed coversSome of the printing equipment is had to use this kind of bearing, the car to do this, put fine timber to petty use!!
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: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: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 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 bearing capacity of needle bearing and copper sleeve?
The bearing capacity of plain bearings with copper sleeve is large. However, the speed of the shaft has a certain requirement, the speed is too low, too high, can not establish oil film, will soon wear.
Q:Working principle of one-way needle roller bearings
The main structure of the unidirectional bearing EG unidirectional roller bearing EG-- | stamping outer ring needle roller clutch (one-way bearing) can be used as a converter, a non-return device, overrunning clutch. HF (needle roller clutch): composed of stamping outer ring and plastic cage. The cage can be provided with plastic spring or stainless steel leaf, guide roller, roller, roller and needle on outer ring as locking device. HFL (clutch and bearing assembly): support bearings are mounted on both sides of the needle clutch and bear radial loads. The needle bearings and plastic cage assemblies are used as supporting bearings
Q:Many one-way needle roller bearings have small holes in the inner and outer rings. What's the function of these small holes?
It should be the oil storage hole, whose main function is to store grease and lubricate the needle roller.

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