Active Member
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[China]
Address: No. 830, No. 52 North 1 West Road, Tiexi District, Shenyang City, Liaoning Province
Contact name:Beerus Chu
Shenyang Sharjah Bearing Co.,Ltd. |
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INA needle roller bearing NA6904 is a of cup needle roller bearings and it is a bearing having small friction coefficient and excellent rotational performance designed.With the purpose of increasing the load area effectively,the radial gap of needle roller bearing NA6904 is smaller than the general needle roller bearings. Therefore, it alleviates the impact load, and a stable long life is gained. Since the stud undergoes screw processing and stepped processing, they can be attached easily.
INA bearing needle NA6904 needle roller bearing NA6904
Related models and specifications of bearing needle NA6904 needle roller bearing NA6904
| Boundary dimensions | Mass/g | NA Model | ||
| /mm | W | |||
| d | D | C | ||
| 10 | 22 | 13 | 24.3 | NA 4900 |
| 12 | 24 | 13 | 27.6 | NA 4901 |
| 24 | 22 | 46.9 | NA 6901 | |
| 15 | 28 | 13 | 35.9 | NA 4902 |
| 28 | 23 | 63.7 | NA 6902 | |
| 17 | 30 | 13 | 39.4 | NA 4903 |
| 30 | 23 | 69.9 | NA 6903 | |
| 20 | 37 | 17 | 79.9 | NA 4904 |
| 37 | 30 | 141 | NA 6904 | |
| 22 | 39 | 17 | 85.4 | NA 49/22 |
| 39 | 30 | 151 | NA 69/22 | |
| 25 | 42 | 17 | 94.7 | NA 4905 |
| 42 | 30 | 167 | NA 6905 | |
| 28 | 45 | 17 | 104 | NA 49/28 |
| 45 | 30 | 183 | NA 69/28 | |
| 30 | 47 | 17 | 108 | NA 4906 |
| 47 | 30 | 191 | NA 6906 | |
| 32 | 52 | 20 | 168 | NA 49/32 |
| 52 | 36 | NA 69/32 | ||
| 35 | 55 | 20 | 181 | NA 4907 |
| 55 | 36 | NA 6907 | ||
| 40 | 62 | 22 | 240 | NA 4908 |
| 62 | 40 | NA 6908 | ||
| 45 | 68 | 22 | 284 | NA 4909 |
| 68 | 40 | NA 6909 | ||
| 50 | 72 | 22 | 287 | NA 4910 |
| 72 | 40 | NA 6910 | ||
| 55 | 80 | 25 | 416 | NA 4911 |
| 80 | 45 | NA 6911 | ||
| 60 | 85 | 25 | 448 | NA 4912 |
| 85 | 45 | NA 6912 | ||
| 65 | 90 | 25 | 479 | NA 4913 |
| 90 | 45 | NA 6913 | ||
| 70 | 100 | 30 | 762 | NA 4914 |
| 100 | 54 | NA 6914 | ||
| 75 | 105 | 30 | 805 | NA 4915 |
| 105 | 54 | NA 6915 | ||
| 80 | 110 | 30 | 852 | NA 4916 |
| 110 | 54 | NA 6916 | ||
| 85 | 120 | 35 | 1280 | NA 4917 |
| 120 | 63 | NA 6917 | ||
| 90 | 125 | 35 | 1340 | NA 4918 |
| 125 | 63 | NA 6918 | ||
| 95 | 130 | 35 | 1410 | NA 4919 |
| 130 | 63 | NA 6919 | ||
| 100 | 140 | 40 | 1960 | NA 4920 |
| 140 | 71 | NA 6920 | ||
Product
INA needle roller bearing NA6904 is a of cup needle roller bearings and it is a bearing having small friction coefficient and excellent rotational performance designed.With the purpose of increasing the load area effectively,the radial gap of needle roller bearing NA6904 is smaller than the general needle roller bearings. Therefore, it alleviates the impact load, and a stable long life is gained. Since the stud undergoes screw processing and stepped processing, they can be attached easily.
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INA bearing needle NA6904 needle roller bearing NA6904
Related models and specifications of bearing needle NA6904 needle roller bearing NA6904
| Boundary dimensions | Mass/g | NA Model | ||
| /mm | W | |||
| d | D | C | ||
| 10 | 22 | 13 | 24.3 | NA 4900 |
| 12 | 24 | 13 | 27.6 | NA 4901 |
| 24 | 22 | 46.9 | NA 6901 | |
| 15 | 28 | 13 | 35.9 | NA 4902 |
| 28 | 23 | 63.7 | NA 6902 | |
| 17 | 30 | 13 | 39.4 | NA 4903 |
| 30 | 23 | 69.9 | NA 6903 | |
| 20 | 37 | 17 | 79.9 | NA 4904 |
| 37 | 30 | 141 | NA 6904 | |
| 22 | 39 | 17 | 85.4 | NA 49/22 |
| 39 | 30 | 151 | NA 69/22 | |
| 25 | 42 | 17 | 94.7 | NA 4905 |
| 42 | 30 | 167 | NA 6905 | |
| 28 | 45 | 17 | 104 | NA 49/28 |
| 45 | 30 | 183 | NA 69/28 | |
| 30 | 47 | 17 | 108 | NA 4906 |
| 47 | 30 | 191 | NA 6906 | |
| 32 | 52 | 20 | 168 | NA 49/32 |
| 52 | 36 | NA 69/32 | ||
| 35 | 55 | 20 | 181 | NA 4907 |
| 55 | 36 | NA 6907 | ||
| 40 | 62 | 22 | 240 | NA 4908 |
| 62 | 40 | NA 6908 | ||
| 45 | 68 | 22 | 284 | NA 4909 |
| 68 | 40 | NA 6909 | ||
| 50 | 72 | 22 | 287 | NA 4910 |
| 72 | 40 | NA 6910 | ||
| 55 | 80 | 25 | 416 | NA 4911 |
| 80 | 45 | NA 6911 | ||
| 60 | 85 | 25 | 448 | NA 4912 |
| 85 | 45 | NA 6912 | ||
| 65 | 90 | 25 | 479 | NA 4913 |
| 90 | 45 | NA 6913 | ||
| 70 | 100 | 30 | 762 | NA 4914 |
| 100 | 54 | NA 6914 | ||
| 75 | 105 | 30 | 805 | NA 4915 |
| 105 | 54 | NA 6915 | ||
| 80 | 110 | 30 | 852 | NA 4916 |
| 110 | 54 | NA 6916 | ||
| 85 | 120 | 35 | 1280 | NA 4917 |
| 120 | 63 | NA 6917 | ||
| 90 | 125 | 35 | 1340 | NA 4918 |
| 125 | 63 | NA 6918 | ||
| 95 | 130 | 35 | 1410 | NA 4919 |
| 130 | 63 | NA 6919 | ||
| 100 | 140 | 40 | 1960 | NA 4920 |
| 140 | 71 | NA 6920 | ||
What is needle roller bearing
bearing needle NA6904 needle roller bearing NA6904 use a roller
style rolling element to reduce friction of a rotating surface.
Needle Bearings have a high load carrying capacity with a very small cross section height. They are available with or without an
inner ring.The needle rollers are guided parallel to the axis using a cage retainer, thrust bearings can also be supplied with no
retainer, which is referred to as a full complement of rollers.
bearing needle NA6904 needle roller bearing NA6904 has a larger surface area that is in contact with the bearing outer surfaces
compared to ball bearings.Additionally there is less clearance, or the difference between the diameter of the shaft and the diameter
of the bearing,so they are much more compact. The typical structure consists of an inner race (or sometimes merely a shaft), a needle
cage which orients and contains the needle rollers, the needle rollers themselves, and an outer race.Needle bearings are
heavily used in engine components such as rocker arm pivots, pumps, compressors, and transmissions.
bearing needle NA6904 needle roller bearing NA6904 is a bearing which uses small cylindrical rollers.The difference between a needle
roller bearing and roller bearing is the ratio of diameter and length of their rollers, when the ratio of the diameter and the length of
roller of a roller bearing is between the interval of 0.1 to 0.4, that roller bearing is called a needle roller bearing.
They are used to reduce the friction of a rotating surface.
bearing needle NA6904 needle roller bearing NA6904 has 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.
What are the applications of bearing needle NA6904 needle roller bearing NA6904
bearing needle NA6904 needle roller bearing NA6904 is 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.
| Product name | INA bearing needle NA6904 needle roller bearing NA6904 |
| material | Chrome steel GCR15 |
| Quality Certificate | ISO9001:2008 |
| Feature | Low noise, less vibration, high precision and long life |
| ID*OD*W(mm) | 20*37*30mm |
| Origin | Japan |
| Net weight(kg) | 0.137KG |
| Brand name | INA |
| Tolerance level | ABEC-7,ABEC-9 |
| Seals type | zz |
| Precision rating | P0, P6 |
| Antirust period | Bearings should normally be put under the protected condition then it is to be stored and preserved. The rustresisting period is two years. |
| Application | Mining operations, paper mills, oil fields, marine industry, steel,
electrical, construction machinery, various kinds of professional
machinery and heavy industry of all types. |
FAQ:
Q: What kind of bearings you supplied
A: We supply all specification of bearings:deep groove ball bearings —-
tapered roller bearings—– cylindrical roller bearings —-Spherical Roller Bearings
—– angular contact bearings – – thrust roller bearings —-thrust ball bearings—-
spherical bearings -needle roller bearings—-pillow block bearings—-sliding guid bearings
—-wheel hub bearings and high-precision low-noise high-speed operation of special bearings.
We also agent and supply all world famous brands of bearings:SKF bearings,NTN bearings,
NSK bearings,NACHI bearings,TIMKEN bearings,KOYO bearings,IKO bearings,INA bearings,
NMB bearings,BONES REDS bearings…
Non-standard bearings can be produced according to your drawing in our factory.
A: The precision of the bearings (dimension tolerance, loading rate), internal
clearance and hardness under heat treatment, structure of cage and material.
Q:The advantage of bearings
A:
(1) reduce friction and wear.
To prevent metal contact and reduce friction and wear in the contact part of the bearing ring,
rolling body and maintainer.
(2) prolong fatigue life.
The rolling fatigue life of the bearing, in the rotation, the rolling contact surface lubrication good,
then extended. Conversely, the oil viscosity is low, the lubricating film thickness is not good,
then shortened.
(3) exhaust friction heat and cooling.
The circulation to oil method can be used to exhaust the heat generated by friction, or from external
heat, cooling. Prevent the bearing from overheating and prevent the lubricating oil from ageing itself.
Q: Application area of bearings
It can cover almost all mechanical industries, including robotic systems, lathes, tools, automobiles, large equipment, and so on.
A: Yes, we welcome sample order to test and check quality. Mixed samples are acceptable.
A:Sample needs 3-7 days, mass production time needs 3-4 weeks.
A: We accept T/T, PAYPAL or Western Union, credit card.
If you need the any brands or any models of bearings,please contact me!
Email:vyse.c@cqpbearing.com
Skype:008613130506319
WhatsApp:008613130506319
Wechat:008613130506319
