Deep Groove Ball Bearing

Basic parameters

Deep groove ball bearings are the most common type of rolling bearings.

The basic deep groove ball bearing consists of an outer ring, an inner ring, a set of steel balls and a set of cages.

Deep groove ball bearing types are available in single row and double row.

The deep groove ball structure is also divided into two structures: sealed and open type.

Open type means that the bearing does not have a sealing structure, and the sealed deep groove ball is divided into a dustproof seal and an oil proof seal.

The dust seal cover material is stamped from steel plate, which is simple to prevent dust from entering the bearing raceway.

The oil-proof type is a contact type oil seal, which can effectively prevent the grease inside the bearing from overflowing.

The single row deep groove ball bearing type code is 6, and the double row deep groove ball bearing code is 4.

The utility model has the advantages of simple structure and convenient use, and is the most common and widely used type of bearing.

Working principle

Deep groove ball bearings are mainly subjected to radial loads and can also withstand radial loads and axial loads.

When it is only subjected to radial loads, the contact angle is zero.

When the deep groove ball bearing has a large radial clearance, it has the performance of angular contact bearing and can withstand large axial load.

Deep groove ball bearings have a low coefficient of friction and a high speed limit.

Bearing characteristics

Deep groove ball bearings are the most representative rolling bearings and are widely used.

Suitable for high speeds and even very high speeds, it is extremely durable and requires no maintenance.

The bearing has small friction coefficient, high limit rotation speed, simple structure, low manufacturing cost and easy to achieve high manufacturing precision.

Dimensional range and form are varied, and it is used in precision instruments, low noise motors, automobiles, motorcycles and general machinery. It is the most widely used type of bearing in the machinery industry.

It is mainly subjected to radial loads and can also withstand a certain amount of axial load.

The axial load carrying capacity is increased when a larger radial clearance is selected, and the contact angle is zero when subjected to a pure radial force.

When there is an axial force, the contact angle is greater than zero.

Generally, stamped wave cage is used, solid cage is used, and nylon frame is sometimes used.

After the deep groove ball bearing is mounted on the shaft, the axial displacement of the shaft or the casing can be restricted within the axial clearance of the bearing, so that the axial positioning can be performed in both directions.

In addition, this type of bearing also has a certain ability to adjust the heart.

When it is inclined 2’~10′ with respect to the hole of the casing, it can still work normally, but it has certain influence on the bearing life.

Deep groove ball bearing cages are mostly steel plated wave cages, and large bearings are mostly made of metal body cages.

Deep groove ball bearings are the most commonly used rolling bearings.

Its structure is simple and easy to use.

Mainly used to withstand radial loads.

However, when the radial clearance of the bearing is increased, the performance of the angular contact ball bearing is certain, and the combined load of the radial and axial directions can be withstood.

It can also be used to withstand pure axial loads when the rotational speed is high and thrust ball bearings are not suitable.

Compared with other types of bearings of the same size as deep groove ball bearings, these bearings have a small coefficient of friction and a high limit speed.

However, it is not resistant to impact and is not suitable for heavy loads.

Structural classification

Bearing construction

The deep groove ball bearing has a simple structure and is easy to achieve high manufacturing precision compared with other types, so it is easy to be mass-produced in series, and the manufacturing cost is also low, and the use is extremely common.

In addition to the basic type, deep groove ball bearings have various variants.

Such as:

  • Deep groove ball bearing with dust cover
  • Deep groove ball bearing with rubber sealing ring
  • Deep groove ball bearing with snap groove
  • Deep groove ball bearing with large load capacity with ball gap
  • Double row deep groove ball bearing

Bearing type

  • Single row deep groove ball bearings
  • Single row deep groove ball bearing with dust cover
  • Single row deep groove ball bearing with dust cover and sealing ring
  • Single row deep groove ball bearing with stop groove and stop ring on the outer ring
  • Deep groove ball bearing with ball gap
  • Double row deep groove ball bearings

According to the size and size of deep groove ball bearings can be divided into:

(1) Miniature bearings—-bearings with a nominal outside diameter range of 26mm or less;

(2) Small bearings—-bearings with a nominal outer diameter range of 28-55mm;

(3) Small and medium-sized bearings—-bearings with a nominal outer diameter range of 60-115mm;

(4) Medium and large bearings—-bearings with a nominal outer diameter range of 120-190mm

(5) Large bearings—-bearings with a nominal outer diameter range of 200-430mm;

(6) Extra large bearings—-bearings with a nominal outer diameter range of 440mm or more.

Application

Deep groove ball bearings can be used in gearboxes, instrumentation, motors, household appliances, internal combustion engines, transportation vehicles, agricultural machinery, construction machinery, construction machinery, roller skates, yo-yo, etc.