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:Are plain bearings grease lubricated?
Whether it is oil grease, need to first select the appropriate viscosity or consistency, viscosity is too large internal friction resistance increases, dynamic wear is also increased, so the friction heat is also increased, and accelerating the oil deterioration, above a certain temperature, will accelerate the fatigue wear. Once the viscosity is too small, the lubricant film is thin and the strength is not enough, only friction and wear, and even produce non fluid lubrication or dry friction, thereby damaging the machine.
Q:Generally speaking, the stiffness of the rolling bearings is more than the stiffness of the sliding bearings - the stiffness of the ball bearings is more than the stiffness of the roller bearings - -
Generally speaking, the stiffness of rolling bearings is lower than that of plain bearings, and the stiffness of ball bearings is lower than that of roller bearings! ~
Q:What is the friction between the shaft and sleeve of the sliding bearing?
3, boundary frictionWhen the two relative to the sliding surface of the sliding bearing lubrication exists, the adsorption effect of lubricating oil and the friction surface, the boundary film a very thin layer formed on the friction surface, it can withstand high pressure without damage. The boundary of oil film thickness is smaller than a micron, not enough to bring the two friction surfaces are separated, so the relative sliding friction surface, two micro spike will meet the oil film cut, the formation of direct contact with local metal, so this state is called the boundary friction. In general, the boundary oil film covers most of the friction surface. Although it can not completely eliminate the direct contact between two friction surfaces as completely liquid friction, it can play a role in reducing wear and tear. The friction coefficient of this state is f =0.008 to 0.01.
Q:Is the high or low pair of plain bearings and shafts?
We (Jiaxing solid) is the production of sliding bearings, but do not understand what you mean hungry.
Q:Why sliding bearings are divided into bearing housings and bushes, and sometimes on the bearing shell with a layer of bearing liner
Sliding bearings should be divided into bearing seat and a bearing, sliding bearing inside the bearing seat because the inside of the bearing seat can be replaced, you can not change, so join the bearing in the bearing, and bearing in putting a layer of bearing liner,
Q:What are the requirements for the material of the sliding bearing liner?
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:What are the types of plain bearings?
According to the bearing materials can be divided into bronze bearings, cast iron bearings, plastic bearings, stone bearings, powder metallurgy bearings, self-lubricating bearings and oil bearing.According to the bearing structure can be divided into round, elliptical bearing, bearing three oil blade bearing, the stepped surface bearing and tilting pad bearings and foil bearings etc..
Q:Sliding bearing rotor shaft neck, prone to wear and galling and what defects
The shaft requires grinding and more than 0.8 finish.Refuel in good time.
Q:What are the structural and functional differences between thrust bearings and radial bearings and conventional ball bearings and plain bearings?
Thrust bearings are called thrust bearings, which can bear axial load (axial thrust), such as some large vertical motors and machine tools.Radial bearings bear radial loads, and these bearings are the most widely used.The above two are two kinds of bearings according to the force direction.Journal bearings and rolling bearings.Plain bearings: plain bearings, both inside and outside the ring, there is no rolling body, usually made of wear-resistant materials. Often used in low speed, heavy load, but also useful at high speed; filling lubricating oil and grease. If the copper sleeve belongs to this low - grease, oil pump, water pump and some other high speed and large fan speed reaches 7, 8K conversion of lubricating oil, the small gap between the shaft and the sliding bearing oil film, so that the sliding bearing and the shaft will not damage and wear.Others, as lianjuan2008 said.
Q:Sliding bearing is a kind of friction bearing, according to its friction state can be divided into what?
The friction resistance of rolling bearings is small, and the load, rotation speed and work temperature are suitable for a wide range, and the standard partsA large number of special manufacturers, reliable quality, adequate supply, lubrication and maintenance convenience, but larger radial size, vibration and noise.As the mechanical efficiency of rolling bearings is higher, the maintenance of bearings is lower, so it is widely used in middle and low speed, as well as high precision requirements.

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