What is a deep groove ball bearing

Deep Groove Ball Bearing
Deep groove ball bearings are non separable bearings. This type of bearing has the advantages of simple structure, no need for regular maintenance during operation, and is relatively inexpensive. It is an extremely widely used radial bearing, suitable for use under high-speed operating conditions.
The inner and outer rings of single row deep groove ball bearings have deep groove raceways. The deep groove raceway, coupled with the excellent fit between the raceway and the steel ball, allows this type of bearing to withstand both radial loads and certain bidirectional axial loads. When the radial clearance of the bearing is appropriately increased, the ability to withstand axial loads is increased, which can sometimes be used to replace high-speed angular contact ball bearings.
Sealed bearing
Deep groove ball bearings come in various structural forms. In addition to universal open bearings, we can also provide customers with closed structure bearings with single sided dust covers, double sided dust covers, single sided sealing rings, and double sided sealing rings.
The sealing ring is divided into contact type and non-contact type (low friction) based on the contact form. Bearings with double-sided sealing rings are filled with lubricating grease before leaving the factory. The filling amount of lubricating grease is generally 25% to 35% of the effective space inside the bearing. If customers have special requirements, other types of lubricating grease can also be filled or the filling amount can be adjusted.
When installing bearings with sealing rings on both sides, they should not be cleaned or heated (oil heating is not allowed) above 80 ℃. Otherwise, it is easy to damage the bearings or cause deterioration or loss of lubricating grease. Bearings with sealing rings can maintain their expected working performance within the range of -30 ℃ to+100 ℃ ambient temperature.
Contact sealed bearings, due to the friction between the sealing ring and the bearing inner ring, have a higher operating temperature compared to non-contact sealed bearings during operation. Therefore, they are suitable for working under medium and low speed conditions.

Bearings with stop grooves on the outer ring
A deep groove Ball Bearing with a stop groove on the outer ring, which can be positioned using a stop ring and easily fixed in the Bearing Seat during installation. Therefore, when the axial installation position is limited, priority should be given to the selection.
According to the different characteristics of bearing usage, various combination designs can also be implemented for the above-mentioned dust covers, sealing rings, stop grooves, etc., and provided to customers.
Low noise bearing
In order to meet customers' special requirements for low noise or (low vibration) bearings, deep groove ball bearings of different vibration value groups can be provided to customers. The symbol of the vibration value group is indicated in the post code after the basic code of the bearing. The content is detailed in the bearing code of this sample, which is introduced in the chapter.
We can also provide customers with other structural forms of deep groove ball bearings, such as insulated deep groove ball bearings, ceramic deep groove ball bearings, stainless steel deep groove ball bearings, and fully loaded deep groove ball bearings with ball gaps. However, due to the large number of structures, they cannot be listed one by one in this sample. If customers need it, they can consult the technical department.
We can also design and manufacture other types of deep groove ball bearings that meet the personalized requirements of customers.
Holder
Deep groove ball bearing cages are mostly steel plate stamped wave shaped cages, as well as vehicle made steel or brass solid cages, as well as engineering plastic cages such as glass fiber reinforced nylon 66. Different material retainers are indicated in the post code, and the content is detailed in the "Bearing Materials" section of this sample.
Axial load bearing capacity
If a deep groove ball bearing needs to withstand pure axial load, in general, the pure axial load it bears
The load shall not exceed 0.5Co. Small bearings (with an inner diameter of approximately 12mm) and light series bearings (diameter series 8, 9, 0, and 1) must not withstand axial loads exceeding the equivalent of 0.25Co. Excessive axial load may significantly reduce the lifespan of bearings.
Minimum load
In order to ensure good operation of the bearing, deep groove ball bearings must apply a certain amount of minimum load, especially when working at high speeds, high acceleration, or under conditions with frequent changes in load direction. Because of these operating conditions, the inertia force between the ball and the cage, as well as the friction inside the lubricant, will have a negative impact on the rolling and rotating accuracy of the bearing, and there may be harmful sliding motion between the ball and the raceway that is harmful to the bearing.

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Dimensions, tolerances, clearances
The external dimensions of standard deep groove ball bearings comply with the provisions of GB/T273.3 "General Plan for External Dimensions of Radial Bearings in Rolling Bearings" and GB/T276 "External Dimensions of Deep Groove Ball Bearings in Rolling Bearings".
The tolerances of standard deep groove ball bearings comply with the provisions of GB/T307.1 "Tolerances for Rolling Bearings and Radial Bearings".
The clearance of standard deep groove ball bearings complies with the provisions of GB/T4604 "Radial Clearance of Rolling Bearings".
The dimensional tolerance level of standard deep groove ball bearings is generally PO level (ordinary level), and the clearance is manufactured as 0 group (basic group). If customers have other special requirements for dimensions, tolerances, and clearance (including non-standard), corresponding products can be provided.
equivalent dynamic load
The equivalent dynamic load of deep groove ball bearings is not only related to the ratio of the axial load borne by the bearing to the basic rated static load. Moreover, different radial clearances can also have an impact on the equivalent dynamic load, as the radial clearance increases and the axial bearing capacity also increases.

When the bearing starts at low temperatures or when the lubricant is dry, a larger minimum load may be required. Usually, the weight of the bearing support itself, combined with the load borne by the bearing, exceeds the minimum required load. If the minimum load has not yet been reached, this type of bearing must apply additional radial load to meet the minimum load requirements.

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