Why is it called deep groove ball bearing
wallpapers Products 2021-03-09
Overview of Deep groove ball bearingDeep groove ball bearings (GB/T 276-2003), formerly known as single-row centripetal ball bearings, are the most widely used rolling bearings. It is characterized by small friction resistance, high speed, can be used to bear radial load or radial and axial combined load at the same time on the machinery, can also be used to bear axial load on the machinery, such as small power motors, automobile and tractor gearboxes, machine tool gearboxes, general machinery, tools and so on.
Deep groove ball bearing is the most common type of rolling bearing. The basic type of deep groove ball bearing consists of an outer ring, an inner ring, a group of steel balls and a group of cages. There are two types of deep groove ball bearings: single row and double row. Deep groove ball structure is also divided into sealed and open structure. Open type means that the bearing does not have a sealed structure. The dustproof seal cover is made of steel sheet stamping, which only plays a simple role in preventing dust from entering the bearing raceway. Oil-proof type is contact oil seal, which can effectively prevent grease spillover in the bearing.
Single row deep groove ball bearing type code is 6, double row deep groove ball bearing code is 4. Its structure is simple, easy to use, is the production of the most common, the most widely used kind of bearings.
The working principle
Deep groove ball bearing mainly bears radial load, also can bear radial load and axial load at the same time. When it bears only radial load, the contact Angle is zero. When deep groove ball bearing has large radial clearance, it has the performance of angular contact bearing and can withstand large axial load. The friction coefficient of deep groove ball bearing is very small and the limit speed is also very high.
Deep groove ball bearings are the most commonly used rolling bearings. Its structure is simple and easy to use. Mainly used to bear radial load, but when the radial clearance of the bearing is increased, it has the performance of a certain angular contact ball bearing, and can bear radial and axial combined load. When the speed is high and the thrust ball bearing is not suitable, it can also be used to bear pure axial load. Compared with other types of bearings with the same specification and size as deep groove ball bearings, this kind of bearings has small friction coefficient and high limit speed. But not impact resistance, not suitable for heavy load.
After the deep groove ball bearing is mounted on the shaft, the axial displacement in both directions of the shaft or the housing can be limited within the axial clearance range of the bearing, so it can be axially positioned in both directions. In addition, this kind of bearing also has a certain self-aligning ability. When the bearing is tilted 2 '~ 10' relative to the shell hole, it can still work normally, but it has a certain influence on the bearing life
Structure and classification
Deep groove ball bearing has simple structure and is easy to achieve higher manufacturing accuracy compared with other types, so it is convenient for mass production into series, and the manufacturing cost is lower, so it is very popular in use. In addition to the basic type, there are various variation structures, such as: deep groove ball bearing with dust cover, deep groove ball bearing with rubber sealing ring, deep groove ball bearing with stop groove, deep groove ball bearing with large load capacity with ball notch, double row deep groove ball bearing.Deep groove ball bearings are mainly used to bear radial loads, but are also commonly used to bear radial and axial composite loads. Especially when the 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, and there is no need for maintenance during the work. It is a kind of bearing with low price and wide use. Deep groove ball bearing models: deep groove ball bearing (60000 type); Deep groove ball bearings with stop grooves on the outer ring (Type 60000N); Deep groove ball bearings with dustproof cover on one side and stop groove on the other side (60000-Zn type); Deep groove ball bearings with dust cover on both sides and stop grooves on the outer ring (60000-2Zn type); Deep groove ball bearings with dustproof cover on one side (Model 60000Z); Deep groove ball bearings with dustproof cover on both sides (Type 60000-2Z); Deep groove ball bearings with sealing ring on one side (60000-LS, 60000-RZ); Deep groove ball bearings with sealing rings on both sides (60000-2LS, 60000-2RZ); Flanged outer ring deep groove ball bearing (F60000 model); Deep groove ball bearings with flanged outer ring with dustproof cover on one side (type F60000-Z); Deep groove ball bearings with flanged outer ring with dust cover on both sides (type F60000-2Z) are 11 kinds in total.According to the size of deep groove ball bearings, they can be divided into:
(1) Miniature bearings ---- nominal outside diameter size range of 26mm below the bearing.
(2) Small bearings ---- nominal outside diameter size range of 28-55mm bearings.
(3) Small and medium-sized bearings ---- nominal outside diameter size range of 60-115mm bearings.
(4) Medium and large bearings ---- bearing nominal outside diameter size range of 120-190mm.
(5) Large bearings ---- nominal outside diameter size range of 200-430mm bearings.
(6) Extra-large bearings ---- bearing with nominal outside diameter size range of more than 440mm.
The processing forms of deep groove ball bearing parts are as follows:
1. Multi-process processing: general bearing production needs 20 ~ 40 processes, as many as 70.
2.Molding processing: the working surface of bearing parts are rotary forming surface, suitable for processing by forming method.
3. Precision machining: most of the surface of the bearing parts should be ground, and the grinding size and geometric accuracy are in .
Deep groove ball bearings can be used in gearboxes, instruments and meters, motors, household appliances, internal combustion engines, traffic vehicles, agricultural machinery, construction machinery, engineering machinery, roller type roller skates, yo-yo, etc.