Bearing Bearings 7017 Angular contact ball bearings 7017 Angular contact ball bearing

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1000 pc
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500000 pc/month

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Product Description:


Angular contact ball bearings can bear radial load and axial load at the same time and also can bear pure axial load. Their ability of axial load is determined by contact angle and is increased with contact angle increasing; speed limit is higher; stiffness is big and can be pre-adjusted. They are applicable to high-speed and high-precision site.

Product application:

- spindle and other high speed precision mechanical spindle

- aircraft engine spindle

- high frequency motor

- printing machinery

- air compressor 

- gas turbine 

- jet engines 

- turbines


 Design ations  Principal dimensions (mm)  〆15º〆25º
Limit speedLimit   speed
dDBBasic   load rating LubricationRated   loadLubrication
Cr   CorGrease   Oil Cr       CorGrease    Oil
70 Series single angular contact ball bearings
70031735106.7   4.944000   66000 6.4          4.739000   59000
70042042129.6   6.337000   55000  9.2              6.033000   49000
700525471212.9   8.733000   4900012.329000   44000
700630551315.7   11.627000   4200014.9      10.923000   37000
700735621419.3   17.519000   3300010.4      10.319000   33000
700840681519.9   19.118000   3100018.9      18.216000   27000
700945751626.7   25.316000   2700025.4      24.115000   25000
701050801627.6   27.515000   2500026.2      26.214000   23000
701155901836.7   37.113000   2100034.8      35.312000   19000
701260951837.8 13000   2100035.8       38.0   11000   18000
7013651001838.9    42.912000   1900036.8      40.710000   17000
7014701102049.9    55.511000   1800047.2      52.79000     16000
7015751152051.3    59.210000   1700048.5      56.28500     15000
7016801252261.6    70.49000    1600058.3      66.98000     14000
7017851302263.6 8500    1500059.9      71.37500     13000
7018901402466.9 8000    1400063.2      79.77000     12000
7019951452479.1    97.67500    1300074.86500     11000
70201001502481.2   103.37000    1200076.7  6000     10000
70211051602693.9    118.26500    1100088.86000     10000
702211017028110.4   139.86000    10000104.4    132.85700     9000
702412018028112.7   148.76000    10000106.3    141.15700     9000
702613020033144.8   190.85700     9000136.8    181.05000     8000
702814021033148.7   202.65000     8000140.4     192.24600     7500
703015022535168.4   232.54600     7500159.1     220.64000     6500
703216024038189.1   264.54000     6500178.6    251.03800     6000
703417026042205.6   299.33800     6000194.2    284.03300     5300
703618028046229.5   352.13500     5700216.8     334.13000     5000

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Q:Why can not the surface roughness of plain bearing surface be too high?
Because the process of start and stop, because of low speed shaft neck and sliding bearing contact friction generated, if the axis roughness is too large, it will increase the friction, easy to wear and sliding shaft bearing, so the shaft neck surface roughness is not too high.
Q:What kinds of plain bearings can be divided into?
(2) the bearing material and the bush structure have a great influence on the performance of the sliding bearing. The bearing material and the bush structure should be selected by considering various factors.(3) non liquid friction sliding bearing calculation and checking, limit pressure P, to ensure that the lubricating oil film is not destroyed; limit value of PV, in order to ensure the bearing temperature is not too high, because the temperature is too high, easy to cause the rupture boundary of oil film.
Q:Why does the sliding bearing use clearance fit?
Sliding bearing is a sliding, if the excessive interference or with great friction, will hinder the movement of cars bearing, and the wear is serious, is not conducive to the long-term use of parts.
Q:Can hydraulic oil be used in motor sliding bearings?
Do not ask where is the unit where I can, even the fan bearing box reducer is used in hydraulic oil, hydraulic oil because contains anti-wear and lubricating composition, but remember not and mixed with other lubricants
Q:Service life of plain bearing --- ask
The service life of a sliding bearing can theoretically be infinite, but this is not necessarily the case because the conditions of use can not be ideal. I want to know how long the actual life of the sliding bearings is The longest sliding bearings that I have come into contact with are the bearings (dynamic lubrication) of two Japanese roller mill spindles, which have been used here for about 30 years without any repairs.
Q:What are the properties of plain bearing materials? Are there any materials that can satisfy these properties simultaneously?
A) the types and characteristics of sliding bearing sliding bearing according to the 1. loads are divided into: (1) sliding bearings (radial sliding bearing); mainly bear radial load; (2) the thrust bearing, main bearing axial load. 2. sliding bearings are suitable for low speed, high precision, heavy load and structural requirements. It is also used at low speed and impact.
Q:What is Babbitt, bearing pad why plating Babbitt.
In the face of Babbitt opened the examination revealed a large area of black, is this because of lubricating oil, or Babbitt materials in long-term operation will appear after the table black, the lubricating oil pressure of 2.5 kg, the temperature is 45-49 degrees. Oil No. 68.
Q:For sliding bearing, bearings, bushings, bushing and difference function
The bushing is mounted on the shaft, with the shaft to rotate together. The Bush is mounted on the seat and does not rotate.There are many large shaft to achieve part of high hardness and high wear resistance with the invention and bearing bushes, but since a high frequency quenching and surface treatment process after these basically eliminated.
Q:What are the requirements for the material performance of plain bearings?
The basic function of plain bearings is to accurately locate the shaft and to support the shaft without damaging it under load. Shafts usually cost higher and are often uneconomical to replace. Selecting the bearing alloy that meets certain performance requirements can guarantee the minimum wear of the shaft.
Q:Hello, about the bearing problem. Sliding bearings are made of powder metallurgy. What kind of grease does it use?
Powder metallurgy bearing is lubricated bearings in the factory will be through the vacuum method of negative pressure adsorption added lubricating oil, in the late stage of the process slowly release and consumption, good quality of powder metallurgy bearing life can reach more than ten years.This type of bearing is recommended to not add lubricating oil or grease, add after will have to change the bearings of the environment, such as dust adhesion, friction coefficient change, oil smoothly, when oil was crushed, and the lubrication performance of powder metallurgy bearing itself and do not come out to play, will become very astringent a card, caused by poor lubrication, which often needs to be added, resulting in unnecessary consumption and fee of manpower. Of course, there is a powder metallurgy sliding bearing is not oily, there is grease, add glib, this is often need to add fat.

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