Deep groove ball bearing

wallpapers Environment 2021-05-08
Deep groove ball bearing (GB / T 276-2003), formerly known as single row radial ball bearing, is one of the most widely used rolling bearings. It is characterized by small friction resistance and high speed. It can be used to bear radial load or combined radial and axial load at the same time. It can also be used to bear axial load, such as small power motor, automobile and tractor gearbox, machine tool gearbox, general machines, tools, etc.
Deep groove ball bearing is the most common type of rolling bearing.
 
 
Deep groove ball bearing (7 sheets)
 
The basic deep groove ball bearing consists of an outer ring, an inner ring, a group of steel balls and a group of retaining frames. There are two types of deep groove ball bearings: single row and double row. The structure of deep groove ball can be divided into sealed and open type. Open type means that the bearing does not have a sealed structure. Sealed deep groove ball can be divided into dust-proof seal and oil-proof seal. The material of dust seal cover is steel plate stamping, which can simply prevent dust from entering bearing raceway. The oil proof type is the contact oil seal, which can effectively prevent the grease overflow in the bearing.
 
The type code of single row deep groove ball bearing is 6, and the code of double row deep groove ball bearing is 4. Its structure is simple, easy to use, is the most common production, the most widely used class of bearings.
Deep groove ball bearings mainly bear radial load, but also can bear radial load and axial load at the same time. When it only bears radial load, the contact angle is zero. When the deep groove ball bearing has large radial clearance, it has the performance of angular contact bearing and can bear large axial load. The friction coefficient of deep groove ball bearing is very small and the limit speed is very high.
 
Bearing characteristics
 
Deep groove ball bearing is the most commonly used rolling bearing. The utility model has the advantages of simple structure and convenient use. It is mainly used to bear radial load, but when the bearing radial clearance is increased, it has certain performance of angular contact ball bearing and can bear radial and axial combined load. When the speed is high and thrust ball bearing is not suitable, it can also be used to bear pure axial load. Compared with other types of deep groove ball bearings with the same size, this kind of bearing has smaller friction coefficient and higher limit speed. But it is not shock resistant and not suitable to bear heavy load[ 2]
 
After the deep groove ball bearing is installed on the shaft, the axial displacement of the shaft or the shell in both directions can be limited within the axial clearance range of the bearing, so the axial positioning can be made in both directions. In addition, this kind of bearing also has a certain self-aligning ability. When it is inclined 2 ′~ 10 ′ relative to the shell hole, it can still work normally, but it has a certain impact on the bearing life.

Deep groove ball bearing is mainly used to bear radial load, but also commonly used to bear radial and axial composite load. Especially when the rotating speed of mechanical equipment is very high and it is not suitable to use thrust bearing, the bearing can be used to bear two-way pure axial load without maintenance during operation. It is a kind of bearing with low price and wide application. Deep groove ball bearing models are: deep groove ball bearing (60000 type); Deep groove ball bearing with stop groove on the outer ring (60000n type); Deep groove ball bearing with dust cover on one side and stop groove on the other side (60000-zn type); Deep groove ball bearing (60000-2zn type) with dust cover on both sides and stop groove on outer ring; One side of deep groove ball bearing with dust cover (60000z type); Deep groove ball bearing with dust cover on both sides (60000-2z type); One side of deep groove ball bearing with sealing ring (60000-ls type, 60000-rz type); Deep groove ball bearings (60000-2ls and 60000-2rz) with sealing rings on both sides; Flange outer ring deep groove ball bearing (f60000 type); Flange outer ring deep groove ball bearing with dust cover on one side (f60000-z type); There are 11 kinds of flange outer ring deep groove ball bearings (f60000-2z type) with dust covers on both sides[ 2]
 
According to the size of the deep groove ball bearing, it can be divided into:
 
(1) Miniature bearing ---- bearing with nominal outer diameter less than 26mm;
 
(2) Small bearing: Bearing with nominal outer diameter of 28-55mm;
 
(3) Small and medium sized bearings: Bearings with nominal outer diameter of 60-115mm;
 
(4) Medium and large sized bearing: Bearing with nominal outer diameter of 120-190mm
 
(5) Large bearing: Bearing with nominal outer diameter of 200-430mm;
 
(6) Oversize bearing: Bearing with nominal outer diameter over 440mm.