Description
Deep groove ball bearing is a kind of the most common rolling
bearing. The basic type of deep groove ball bearing is composed of
an outer ring, a ring, a group of steel ball and a group of
retainers. Deep groove ball bearing has a single row and double row
two types, and also has sealed bearing and open bearing, open
refers to the bearing without sealing structure,sealing type deep
groove ball into the dust seal and oil seal. Dust seal cover
material for steel plate stamping, plays only a simple prevent dust
from entering the bearing raceway. Oil proof type contact type oil
seal, can effectively prevent bearing grease inside the spillover.
Applications:
Deep groove ball bearing can be used for transmission, instruments
and meters, electric machinery, household electrical appliances,
internal combustion engines, transportation vehicles, agricultural
machinery, construction machinery, engineering machinery, roller
skate,yo-yo etc.
The size of bearing clearance directly related to the use of noise,
vibration, normal temperature, service life and the assembly of
machinery motion effect. Therefore, it is very important that we
choose the suitable assembly bearing clearance. We divided from
small to big according to radial clearance range into C2, C0, C3,
C4 and C5. Specific reference see the chart:
| Bore | C2 | C0 | C3 | C4 | C5 |
| Over | Including |
| mm | Inch | mm | Inch | Min | Max | Min | Max | Min | Max | Min | Max | Min. | Max |
| 2.5 | 0.0984 | 10 | 0.3937 | 0 | 7 | 2 | 13 | 8 | 23 | 14 | 29 | 20 | 37 |
| 10 | 0.3937 | 18 | 0.7087 | 0 | 9 | 3 | 18 | 11 | 25 | 18 | 33 | 25 | 45 |
| 18 | 0.7887 | 24 | 0.9449 | 0 | 10 | 5 | 20 | 13 | 28 | 20 | 36 | 28 | 48 |
| 24 | 0.9449 | 30 | 1.1811 | 1 | 11 | 5 | 20 | 13 | 28 | 23 | 41 | 30 | 53 |
| 30 | 1.1811 | 40 | 1.5748 | 1 | 11 | 6 | 20 | 15 | 33 | 28 | 46 | 40 | 64 |
| 40 | 1.5748 | 50 | 1.9685 | 1 | 11 | 6 | 23 | 18 | 36 | 30 | 51 | 45 | 73 |
| 50 | 1.9685 | 65 | 2.5591 | 1 | 15 | 8 | 28 | 23 | 43 | 38 | 61 | 55 | 90 |
Also can consult the table below choose bearing clearance
| The usage situation | Use examples | Choose clearance |
| Strict control noise, vibration installation precision, high
position | Instrument and equipmentRoll neck calender Low noise and small
motor | C2,C0 |
| General load, speed, working temperature is not high | Transmission machinery, reducer and other general machinery | C0 |
| High temperature, high speed, high requirements for service life | Automobile generator and engine | C3 |
| Using high temperature environment, should not be the occasion of
heat | Drying machine, paper making machinery, and so on | C3,C4 |
| High temperature, high speed, and large impact load | Vibrating screen, speed gear
| C4 |
| Inner and outer ring take the surplus interference, large volume,
high temperature, heat dissipation | Vibration type pressure road, machine car rear wheel | C5 |
