Shaanxi Fortune Industries Co.ltd
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NK series needle roller bearing 15*23*12mm for sewing machine
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
| New Model | Old Model | d×D×B | New Model | Old Model | d×D×B |
| NK Series | NK 43/20(RNA434320) | NK43/20 | 43×53×20 | ||
| NK 5/10TN | 5×10×10 | NK 43/30 | NK43/30 | 43×53×30 | |
| NK 5/12TN | 5×10×12 | NK 45/20 | 644808 | 45×55×20 | |
| NK 6/10TN | 6×12×10 | NK 45/30(RNA455530) | NK45/30 | 45×55×30 | |
| NK 6/12TN | 6×12×12 | NK 47/30 | NK47/30 | 47×57×30 | |
| NK 7/10TN | 7×14×10 | NK 50/25 | NK50/25 | 50×62×25 | |
| NK 7/12TN | 7×14×12 | NK 50/35 | SZ-414 | 50×62×35 | |
| NK 8/12TN | 8×15×12 | NK 55/25 | NK55/25 | 55×68×25 | |
| NK 10/12TN | 10×17×12 | NK 55/35 | NK55/35 | 55×68×35 | |
| NK 10/16TN | 10×17×16 | NK 60/25 | 4624908 | 60×72×25 | |
| NK 12/16 | 12×19×16 | NK 60/35 | NK60/35 | 60×72×35 | |
| NK 14/16 | NK14/16 | 14×22×16 | NK 65/25 | NK65/25 | 65×78×25 |
| NK 14/20 | NK14/20 | 14×22×20 | NK 65/35 | SZ-415 | 65×78×35 |
| NK 15/16(RNA152316) | NK15/16 | 15×23×16 | NK 68/25 | NK68/25 | 68×82×25 |
| NK 15/20 | NK15/20 | 15×23×20 | NK 68/35 | NK68/35 | 68×82×35 |
| NK 16/16 | NK16/16 | 16×24×16 | NK 70/25 | NK70/25 | 70×85×25 |
| NK 16/20 | NK16/20 | 16×24×20 | NK 70/25/YA | 4844912 | 70×85×25 |
| NK 17/16 | NK17/16 | 17×25×16 | NK 70/25/P5YA | D4844912 | 70×85×25 |
| NK 17/20(RNA172520) | NK17/20 | 17×25×20 | NK 70/35 | NK70/35 | 70×85×35 |
| NK 18/16 | NK18/16 | 18×26×16 | NK 73/25 | 73×90×25 | |
| NK 18/20 | NK18/20 | 18×26×20 | NK 73/35 | 73×90×35 | |
| NK 19/16 | NK19/16 | 19×27×16 | NK 75/25 | 75×92×25 | |
| NK 19/20 | NK19/20 | 19×27×20 | NK 75/35 | 75×92×35 | |
| NK 20/16 | 644802 | 20×28×16 | NK 80/25 | 644814 | 80×95×25 |
| NK 20/20 | NK20/20 | 20×28×20 | NK 80/35(RNA809535) | RNA809535 | 80×95×35 |
| NK 21/16 | NK21/16 | 21×29×16 | NK 85/25 | NK85/25 | 85×105×25 |
