Self-aligning Ball Bearing

Self-aligning ball bearing are bearings equipped with spherical bearings between the inner ring of two raceways and the outer ring of a spherical raceway.

The outer ring raceway surface’s curvature center is consistent with the bearing center, so it has the same aligning function as the automatic aligning ball bearing.When the shaft and the outer shell flexed, it can be adjusted automatically without increasing the bearing burden. The self-aligning ball bearing can bear radical load and axial load in two directions.Large radical load capacity, is suitable for heavy load and impact loads situation. The inner ring diameter is the bearing of the cone hole, which can be installed directly, or installed on the cylindrical shaft with adapter sleeves or withdrawal sleeves. The cage uses steel stamping cage, polyamide forming cage and titanium alloy turning cage.

The self-aligning ball bearing has two structures: cylinder hole and  conical hole, and the material of cage has steel, synthetic resin and so on. It is characterized by the outer ring roller is spherical and has automatic aligning, which can compensate for the error caused by different concentricity and shaft deflection, but the relative inclination of the inner and outer rings should not exceed 3 degrees.

It can bear a large radical load, but also can bear a certain shaft load. The outer raceway of this kind of bearing is spherical, so it has aligning function. When the shaft is bent or inclined by force, the relative inclination between inner center line and outer center line does not exceed 1°-2.5°, the bearing still can work.

The self-aligning ball bearing has two kind of inner holes: cylindrical and conical. The taper of conical inner hole is 1:12.

Self-aligning ball bearing product characteristics

It mainly bears the radial load, and also can bear small shaft load.

The shaft displacement of the shaft(shell) is limited within  clearance limit, with automatic aligning function, allow the inner and outer parts to work normally under the condition that the relative inclination is not large, and is suitable for the parts where the bearing holes cannot strictly guarantee the coaxiality.

Self-aligning ball bearing structure form 

 The self-aligning ball bearing with dust cover and seal ring has been filled with appropriate grease during assembly, which should not be heated or cleaned before installation, and does not need to be lubricated during use. It is suitable for operating temperature between -30℃ to +120℃. The main uses of the self-aligning ball bearing: suitable for precision instrument, low noise motor, automobile, motorcycle and general machinery, etc., is the most widely used bearings in the machinery industry.

Bearing series

Miniature series: 10x、12x、13x

Universal series: 12xx、13xx、22xx、23xx

Seal series: 22xx、23xx

Application

The self-aligning ball bearing is suitable for bearing heavy load and impact load, precision instrument, low noise motor, automobile, motorcycle, metallurgy, rolling mill, mining, petroleum, paper making, cement,  press sugar and other industries and general machinery.

The suffix definition

C3：radial clearance is larger than normal clearance

K：1/12 taper cone hole 1/12

K30：1/30 taper cone hole 1/30

M：steel ball guided machined brass solid cage

2RS：with both end of the sealing cover

TV：glass fiber reinforced polyamide (nylon) solid cage guided by steel balls