NSK NK112/20 needle roller bearing sizes 20*30*10mm NK112/20
USD $1.02 - $1.5 /Set
Min.Order:1 Set
Jinan Shenglei Bearing Co., Ltd.
A part of our products:
Description:
Needle roller bearing is a bearing unit composed of machined outer ring & inner ring,cage and
needle roller assembly featuring small section height,big load capacity & rigidity,compact
structure and small size,high rotating accuracy with the structure of disposed inner ring.
Needle roller bearing is characterized by multiple structures,broad adaptability and easy
installation.
It is widely used in automobile,machine toll,lathe,metallurgical,textile,printing industry and
etc. Various machinery equipment. With this kind of bearing,machine design can realize the
goal of small-scale & light weight.
Types of Designs:
This kind of bearing has multiple structural styles for the choice of customers,such as
narrow & broad series,with or without inner rings,cages,rib or sealings. It can be designed
according to the special structural requirements of customers as well.
Product Precision Accuracy:
Dimensional tolerance and geometrical accuracy is based on GB/T5801.
Mutual difference of needle roller diameter is 2 um,and the precision grade is class
G2(ISO GB/T309)
The diameter of inscribed circle conforms to tolerance grade F6 before the fitting of outer
ring with cage and roller assembly.
Bearing radial running clearance conforms to the value defined by class 0 group of GB/T4604
Special precision grade in based on GB/T307.1
For fuller information on the special requirement of bearing running clearance, inscribed circle
and precision grade,please contact our company.
Material:
Material for needle roller is GCr15 bearing steel,quench-hardening HRC60-65
Material for inner and outer rings is GCr15 bearing steel,quench-hardening HRC60-65
Material for cages is quality low-carbon steel or reinforced nylon.
Special Directions:
Bearing running clearance and inner-cutting roundness should be regulated according to different
conditions.
Machine tolls should be used for press-in fitting or thermal fitting when install the bearing.
Limited by plastic cages(suffixed with TN) and sealing-element material ,operating temperature
is -30℃--+100℃
For general-disposition design of bearings,refer to the relevant recommendation in the applied
technology of roller bearings.
Pictures show
Related models and specifications
Dimensions | Mass | Designation | ||
Fw | D | C | ||
mm | mm | mm | kg | – |
5 | 10 | 10 | 0.0031 | NK 5/10 TN |
5 | 10 | 12 | 0.0037 | NK 5/12 TN |
6 | 12 | 10 | 0.0047 | NK 6/10 TN |
6 | 12 | 12 | 0.0057 | NK 6/12 TN |
7 | 14 | 10 | 0.0069 | NK 7/10 TN |
7 | 14 | 12 | 0.0082 | NK 7/12 TN |
8 | 15 | 12 | 0.0087 | NK 8/12 TN |
8 | 15 | 16 | 0.012 | NK 8/16 TN |
9 | 16 | 12 | 0.01 | NK 9/12 TN |
9 | 16 | 16 | 0.013 | NK 9/16 TN |
10 | 17 | 12 | 0.01 | NK 10/12 TN |
10 | 17 | 16 | 0.013 | NK 10/16 TN |
12 | 19 | 12 | 0.012 | NK 12/12 |
12 | 19 | 16 | 0.016 | NK 12/16 |
14 | 22 | 13 | 0.017 | RNA 4900 |
14 | 22 | 13 | 0.016 | RNA 4900 RS |
14 | 22 | 13 | 0.016 | RNA 4900.2RS |
14 | 22 | 16 | 0.021 | NK 14/16 |
14 | 22 | 20 | 0.026 | NK 14/20 |
15 | 23 | 16 | 0.022 | NK 15/16 |
15 | 23 | 20 | 0.027 | NK 15/20 |
16 | 24 | 13 | 0.017 | RNA 4901 |
16 | 24 | 13 | 0.018 | RNA 4901 RS |
16 | 24 | 13 | 0.018 | RNA 4901.2RS |
16 | 24 | 16 | 0.022 | NK 16/16 |
16 | 24 | 20 | 0.028 | NK 16/20 |
16 | 24 | 22 | 0.031 | RNA 6901 |
What are the applications of Needle Roller Bearings?
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 bearing: 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.
A: 30% T/T in advance .70% against copy of B/L
B.30% T/T in advance .70% against L/C at sight
C.Western union
D.Paypal
E:50% in advance,the balance should be paid after seeing the picture of total goods.
F:Offical Bank Account
Why us
1.High speed, High Precision, Low Noise, Long Service Life
2.Wide Array of Applications
3.Large Inventories
4.Small order accept
5.Competitive Prices and High Quality
6.Various Brands
7.Require little maintenance
8. OEM is supported
9. Our company insists on the "quality first, credit first" business ideas and our product specification is well-founded. We have a good reputation in the international market by our perfect service and sufficient supply.
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