Application of deep groove ball bearings are particularly broad scope. Therefore, there are many varieties and sizes of them. SKF standard series is composed of the following types:
Single row deep groove ball bearings
Single row deep groove ball bearings with filling slots
Stainless steel deep groove ball bearings
Double row deep groove ball bearings
Hybrid deep groove ball bearings
Deep groove ball bearings for high temperature applications
1, single row deep groove ball bearings
Single row deep groove ball bearings are with particularly wide application. This type of bearing is designed to be simple for non-separable, suitable for high speed, even for very high speed and very durable in operation, almost no maintenance. Bearing Raceway of deep groove and the high tie between raceways and balls, deep groove ball bearings in addition to radial loads, can accommodate axial loads in both directions, even at high speeds as well.
Single row deep groove ball bearings are one of the most widely used bearings. Therefore, SKF has many varieties and sizes:
Open basic design bearings
ICOS oil sealed bearing units
With open ring groove of bearings, bearings with snap rings rings with or without opening.
Product family also includes bearings with a tapered bore.
2, deep groove ball bearings with filling slots
There is one filling slots on the ring and the outer ring of single row deep groove ball bearings with filling slots. Bearings with filling slots have a higher radial load capacity than bearings without filling slots, but their axial load carrying capacity is small. Moreover, this bearing should not be at the same standard bearings under the same high speed running. Depending on different applications, deep groove ball bearings with filling slots can be caged or without cage.
Small dimensions of these bearings are mainly used in automobile gear box, standard model identification, with cage.
Applications designed for heavy loads and low speed rotation of large bearings without cage.
3, stainless steel deep groove ball bearings
Stainless steel deep groove ball bearings can withstand moisture and corrosion caused by a number of other medias. This type of single row deep groove ball bearings the same as standard deep groove ball bearings, bearing raceway with a deep ditch, Compatibility between raceways and balls is extremely high. The bearings is without filling slots, in addition to radial loads, also subjected to bi-directional effects of axial loads, even at high speeds as well.
Operating characteristics of stainless steel deep groove ball bearings are the same as conventional steel deep groove ball bearings, but the load carrying capacity is low.
The bearings are provided with an open and sealed design, shaft sizes from 1 to 50 mm.
Model prefix w stainless steel bearings, for example, W626-2Z.
4, double row deep groove ball bearings
Double row deep groove ball bearings echoed with single row deep groove ball bearings in the design. These bearings have deep uninterrupted raceways and high tie between the balls and raceways. In addition to radial loads, they are also subjected to bi-directional effects of axial load.
Double row deep groove ball bearings are ideal for single bearings low bearing load of the bearing arrangement. Outer diameter and inner diameter of the same case, the double row bearings are slightly wider than single row bearings, but substantially higher than the load capacity of the 62 and 63 series single row bearings.
5, hybrid deep groove ball bearings
Standard ceramic hybrid bearings are mainly single row hybrid deep groove ball bearings. The reason is clear: deep groove ball bearings are the most widely used bearing type, particularly in the motor. Close fit between deep raceway grooves and roller, makes it able to withstand radial loads and axial loads in both directions.
inner ring diameter of Hybrid deep groove ball bearings varies from 5 to 110mm, and can meet the needs of most applications. Larger bearings can be customized.
6, deep groove ball bearings for high temperature applications
The bearings are without filling slots, in addition to radial loads, can accommodate moderate axial loads. This is characterized by radial internal clearance of the bearing and is equipped with a special cage. Large clearance is four times the C5 clearance, even in rapid cooling can prevent bites in the bearing. All surfaces of the bearing and the housing are manganese phosphate. It has antiseptic effect, and improve operational performance.
High temperature deep groove ball bearings are with a cylindrical bore, there are five different forms, as described follows.
VA201, for the most common applications
VA201 bearings without seal, with pressed steel cage. Using poly (alkyl-Asian) glycol/graphite mixture lubrication and can be used from-40 to + 250 ° c temperature range. At the time of high temperatures above + 200 ° c, suitable for dry lubrication.
2Z/VA201 with shield
2Z/VA201 has the same design as the VA201 bearings. There areshield on both sides to prevent solids from entering. In addition, the bearing load of poly (alkyl-Asian) glycol/graphite mixture amount is twice times the open VA201 bearings.
2Z/VA208-used in high temperature
Bearing 2Z/VA208-equipped with a segmented cage of graphite,-150 to + 350 ° c temperature of the environment. Graphite in the paragraphs to separate the bowls, at the same time provide the necessary lubrication. Bearings are equipped with two shield, axial guide cages and prevent solids from entering. When cage is rotated graphite powder released particles provide adequate lubrication for the bearing.
Another advantage of these bearings are good environmental performance. Even at the highest temperatures, and no dangerous gases or steam comes out.
-2Z/VA228, can be used for the highest requirements
2Z/VA228-bearing is SKF high-temperature applications in the “best”. Pure graphite with “ball” cage, the cage has opened up more areas of application for this high temperature bearings. Spherical cage is a unique invention of SKF, allows running at speed of up to 100r/min.
2Z/-VA216 for corrosive environments
When corrosive in application environments are especially strong, 2Z/VA216 design bearings are recommended. The bearings are filled with milky white all purpose grease this grease with a mixture of PTFE based fluorinated polyether oil that can be used from-40 to + 230 ° c temperatures. Bearing design and 2Z/VA201 are the same in other areas.
Under normal circumstances, the lubricant in the bearing filled free space and 25. On request, you can provide other fill level.
Deep groove ball bearing General by pair rings a group keep frame, a group just ball composed and a group keep frame constitute, deep groove ball bearing type code for 6. is production most general, application most broad of category bearing. deep groove ball bearing structure simple, using convenient, is production bulk maximum, and bear must of axis to load. Dang bearing of radial tour gap increased Shi, has corner contact ball bearing of features, can bear larger of axis to load.
Deep groove ball bearings are mainly used under purely radial load, can bear both radial and axial loads, when it is only when you take pure radial loads, contact angle is zero. When a deep groove ball bearing with larger radial internal clearance are, with angular contact bearings, can withstand greater axial loads. small coefficient of friction of deep groove ball bearings, speed limit is also very high, especially in axial load is a lot of fast-moving conditions, Deep groove ball bearing than thrust ball bearing more has superiority. and size same of other class bearing comparison, this class bearing friction factor small, limit speed high. in speed higher not used thrust ball bearing of situation Xia available the class bearing bear axis to load. deep groove ball bearing mounted in axis Shang yihou, can makes axis or shell of axis to displacement limit in bearing of axis to tour gap range within. While, dang shell hole and axis (or outer ring internal ring) relative has tilt Shi, (not over 8-16 according to tour gap determines) You can still work properly. However, that tilt, is bound to reduce the service life of the bearing.
Deep groove ball bearings compared with other types of bearings of the same size, minimal friction loss, higher speed limit, in the case of thrust ball bearing in high speed should not be used, such bearings are subjected to purely axial load. If improving the precision of their manufacturing, and bakelite, bronze, solid cage for hard materials such as aluminum, its speed increases.
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