Description:
Needle Roller Bearings
Needle Roller Bearings are bearings which uses small cylindrical rollers.
They are used to reduce friction of a rotating surface.
Needle bearings have a large surface area that is in contact with the bearing outer surfaces compared to ball bearings. Additionally there is less added clearance (difference between the diameter of the shaft and the diameter of the bearing) so they are much more compact.
The typical structure consists of a needle cage which orients and contains the needle rollers, the needle rollers themselves, and an outer race (sometimes the housing itself).
Radial needle bearings are cylindrical and use rollers parallel to the axis of the shaft. Thrust needle bearings are flat and use a radial pattern of needles.
Full complement bearings have solid inner and outer rings and rib-guided cylindrical rollers. Since these bearings have the largest possible number of rolling elements, they have extremely high radial load carrying capacity and are suitable for particularly compact designs.
1. Radial Needle and Cage Assemblies(K type)
2. Outer circle with double lock needle roller bearing(NA,NKI,RNA,NK type)
3. Outer with double raised edge single row needle roller bearing(NA,NKI,RNA,NK type)
4. Outer with double raised edge double row needle roller bearing(NA,RNA type)
5. Stamping outer needle roller bearing(HK,BK type)
Applications:
Needle bearings are heavily used in automobile components such as rocker arm pivots, pumps, compressors, and transmissions. The drive shaft of a rear-wheel drive vehicle typically has at least eight needle bearings (four in each U joint) and often more if it is particularly long, or operates on steep slopes.
Additional clarification of needle roller: According to "Marks' Standard Handbook for Mechanical Engineers", a needle bearing is a roller bearing with rollers whose length are at least four times their diameter.
Power Tools,
Washing Machines,
Sport Apparatus,
Skates
Fans,
Textile Machine,
Skateboard,
Pumps,
Electric Motors,
Specifications
NKIA series |
NKIA5901, NKIA5902, NKIA5903,NKIA5904, NKIA5905, NKIA5905, NKIA5906, NKIA5907, NKIA5908,
NKIA5908, NKIA5909, NKIA5910, NKIA5911, NKIA5912, NKIA5913, NKIA5914 |
NKIB series |
NKIB5901, NKIB5902, NKIB5903,NKIB5904, NKIB5905,NKIB5905, NKIB5906, NKIB5907, NKIB5908,
NKIB5908, NKIB5909,NKIB5910,NKIB5911,NKIB5912, NKIB5913, NKIB5914 |
Drawncup needle roller bearing |
HK,BK,HK..2RS,MFY,SCE,BCE,BK..RS,F,HK..RS,MF,FY |
Radial needle roller and cage assemblies |
K,KZK,KNL,K..ZW,KBK |
Needle roller bearings |
NK,NKS,RNA49,RNA69,RNAO,NKI,NKIS,NA49,NA69,NAV,
RNAV,RNA49..RS,RNA49..2RS |
Inner ring |
IR,LR |
Yoke type track rollers |
RSTO,RNA22..2RSX,NATV,STO,NA22..2RS,NATV..PP,STO..X,
NA22..2RSX,NUTR,RNA22..2RS,NATR,NUTR.X |
Curve rollers |
KR,KRV,KRVE..PP,KR..PP,KRV..PP,NUKR,KRE..PP,KRVE,NUKRE |
Combined radial thrust bearings |
NKIA,NKX,NKX..Z,NKIB,NKXR,NKXR..Z,NX,NX..Z |
Axial bearings |
AXK,AXW |
One way clutch |
HF,HFL |
Shaft size(mm) |
Bearing Model |
Basic size (mm) |
Load(N) |
Speed limit
Lubricating oil (rpm) |
Fw |
D |
C |
Cr Dynamic |
Cor Static |
15 |
NAV4002 |
15 |
32 |
17 |
10800 |
29800 |
4500 |
17 |
NAV4003 |
17 |
35 |
18 |
17000 |
37900 |
4300 |
20 |
NAV4004 |
20 |
42 |
22 |
28150 |
60900 |
3900 |
25 |
NAV4005 |
25 |
47 |
22 |
33800 |
70800 |
3700 |
30 |
NAV4006 |
30 |
55 |
25 |
49900 |
96500 |
3500 |
35 |
NAV4007 |
35 |
62 |
27 |
47600 |
122800 |
3100 |
40 |
NAV4008 |
40 |
68 |
28 |
49900 |
137900 |
2700 |
45 |
NAV4009 |
45 |
75 |
30 |
52500 |
152500 |
2600 |
50 |
NAV4010 |
50 |
80 |
30 |
55700 |
166000 |
2500 |
55 |
NAV4011 |
55 |
90 |
35 |
68500 |
225800 |
2300 |
60 |
NAV4012 |
60 |
95 |
35 |
75400 |
239000 |
2100 |
65 |
NAV4013 |
65 |
100 |
35 |
79500 |
256900 |
1900 |
70 |
NAV4014 |
70 |
110 |
40 |
98800 |
354900 |
1700 |
75 |
NAV4015 |
75 |
115 |
45 |
101800 |
372900 |
1600 |
80 |
NAV4016 |
80 |
125 |
45 |
102900 |
373500 |
1500 |
85 |
NAV4017 |
85 |
130 |
45 |
103800 |
374800 |
1400
|
Our company is an Industry and trade integration modern enterprises specialized in bearing manufacture, and passed ISO9001-2000 international quality management system certiIndustry and trade body specialized in bearing manufacture and import and export right of modern enterprises, and passed ISO9001-2000 international quality management system certification. Since its inception, already has a standardized production base, excellent production equipment and perfect quality inspection system and professional commitment to bearing product development, production, sales and service, which makes GQ bearing in the bearing industry has become well-known brands.
Our factory is located in China' S important bearing sales base - Wuxi City, Jiangsu Province. Sales headquarters located in China' S economic and trade center in Pudong District, Shanghai Lujiazui CBD core area.
Our company is the professional company which producing and processing deep groove ball bearings, spherical roller bearings, tapered roller bearings, agricultural bearings, bearings and other companies excavator professional, and has a complete and scientific quality management system. At the same time according to customer drawings, sample order processing, to provide OEM and processing services.
The company has industry-leading configuration reasonable production and testing equipment to ensure product prenatal, delivery and postpartum quality of each process. Adopts advanced production techniques and technologies, from skilled workers under the guidance of professional engineers with, the use of modern management tools, providing our customers with high quality bearing products. The company changed the traditional production operating environment, build a clean, non-polluting clean production workshop of the company, in order to reduce the impact of fly ash product noise.
Our products are widely used in: Automotive, electric power, metallurgy, mining, machinery manufacturing, maintenance and other fields. Product sold: The United States, Canada, India, Pakistan, Iran, Egypt, Russia and other countries.
We continue to explore new and innovative, determined efforts to create a competitive product. At the same time, we are committed to the development of high precision, long life high quality bearings. We have been pursuing the goal is to provide customers with quality products and excellent service.
The company keep its quality, user-oriented commitment to quality and efficient service standards, mutual benefit and common development for business purposes, and sincerely welcome home and abroad come to negotiate business letter.
