What is the function and characteristics of pillow block bearing?

The function and characteristics of the pillow block bearing

The housed bearing consists of an outer spherical ball bearing with seals on both sides and a cast (or steel stamped) bearing seat.
The inner layout of a housed bearing is similar to that of a deep groove ball bearing, but the inner ring of this bearing is wider than the outer ring. The outer ring has a truncated spherical surface, which is quite self-aligning with the concave spherical surface of the bearing seat.

Features of pillow block bearing
Usually, there is a gap between the inner hole and the shaft of this kind of bearing, and the inner ring of the bearing is fixed on the shaft with a top wire, an eccentric sleeve or an adapter sleeve, and rolls with the shaft.

Effect
The bearing with seat has a compact layout, convenient loading and unloading, and perfect sealing. It is suitable for short support and is often used in mining, metallurgy, agriculture, chemical industry, textile, printing and dyeing, conveying machinery, etc.

The causes of noise in rolling bearings are relatively complex, one of which is the combined surface wear of the inner and outer rings of the bearing. Due to this wear, the joint relationship between the bearing and the housing, the high-temperature bearing and the shaft is destroyed, causing the axis to deviate from the correct position, and abnormal noise occurs when the shaft moves at high speed. When the pillow block bearing is exhausted, its surface metal peels off, which will also increase the radial clearance of the bearing and cause abnormal noise. In addition, the bearing is not smooth enough, resulting in dry conflict, and abnormal sound such as bearing cracking. After the pillow block bearing is worn and loose, the connecting frame is loose and damaged, and abnormal noise will also occur.

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