The Difference Between Ball Bearing and Roller Bearing

In bearings field,in genera,it divide the bearings into two different types,one-ball bearings,another-roller bearings.Eric Bearing Limited has enough stock for all different types of bearings,Deep groove ball bearings,Angular contact ball bearings,Thrust ball bearings/Spherical roller bearings,Cylindrical roller bearings,tapered roller bearings,Spherical roller thrust bearings.the following let us make clear the difference between ball bearing and roller bearing.  

The working principle of bearings is friction rolling motion. Ball bearings are spherical, and roller bearings are cylindrical.

Ball bearings are point contact, so small friction and high speed, but because the contact point is small, it can not withstand heavy load.Need KOYO 6208,click here.

Roller bearings are line contact, so friction is big and speed is not high as the ball, but because of the large contact area, it can withstand heavy loads.

The noise of cylindrical roller bearings is greater than that of deep groove ball bearings when the same size bearings rotate at the same speed.This is also because the two bearings of the rolling body contact surface caused by different friction.The greater the friction, the greater the noise.

The aligning ball bearing has two columns of steel balls, the inner ring has two raceway, the outer ring raceway is the inner spherical type, with the performance of automatic centering.It can automatically compensate the coaxiality error caused by the deflection of the shaft and the deformation of the shell.This kind of bearing mainly bears radial load, while bearing radial load, can also bear a small amount of axial load, usually not used to bear pure axial load, such as pure axial load, only a row of steel ball force

Roller, spherical roller bearing has two columns is mainly used to bear radial load, but also can carry axial load in either direction.This kind of bearing high radial load capacity, especially suitable for overloading or work under the shock load, but can't afford to pure axial load;Self-aligning performance is good, can compensate the alignment error.Need SKF 32208 J2/Q,click here.

Ball bearings is widely used in gearbox, instrument and meter, motor, household appliance, internal combustion engine, traffic vehicle, agricultural machinery, construction machinery, construction machinery, roller skates, yo-yo, etc.roller bearings applied in automobile, rolling mill, mining, metallurgy, plastic machinery and other industries.Roller bearings are preferred under low speed and heavy load, and ball bearings are preferred under high speed and light load.