Top 12 Mounted Bearings

Most bearings are available as mounted units that eliminate the need for different assembly components. Mounted bearings are widely used in various types of machinery such as gear, motors, pharmaceutical, and printing machinery. Bearings provide 360-degree grease circulation around the shaft, which results in better retained and utilized lubrication.

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Mounted Bearings Buying Guide

Mounted bearing provides a shaft for radial thrust to support the radial shaft that can be bolted on a machine frame or any other structure. These bearings are designed to support horizontal, vertical as well as inclined shaft or axle.

Pillow mounted block

Pillow block or Plummer block is the most common type of mounted unit. They are constructed of a self-aligning housing and insert bearing. The mounting base is perpendicular to the shaft, while bolt holes are parallel to the shaft. They can be used on vertical, horizontal as well as inclined surfaces. Pillow blocks are easy to dismantle and replace.

Flagged mounted bearing

Flagged bearings are generally used on vertical surfaces. Cylindrical cartridge provides support where the shaft axis is perpendicular to and passes through machined housing. They are available in 2, 3, and 4 hole configurations. Flanges ensure that the bearing is flush and provides rigidity. Flanged bearings are also available as ball bearings that support moderate radial and axial loads parallel to the shaft. However, ball bearings can be operated at high speed.

Types of flagged bearing

The 2-bolt flanged ball bearing has a diamond or wing-shaped with two holes for mounting. These bearing can be moved and aligned to accommodate long shafts better. The three-bolt flanged ball bearing has a round shape with three holes for mounting. Four- flanged ball bearings have a square shape with four holes. 4-bolt bearings can accommodate higher loads than 2-bolts flanged and are used in heavy-duty machines.

Metals used in bearing

Bearing housings are primarily made of grey cast iron. Various metals can offer the same strength, including ductile iron, steel, stainless steel, and various types of thermoplastics and polyethene-based plastics. Zinc alloy bearing produces low torque, low noise, fast speed, and high precision. These materials offer lower friction and superior stability. Most bearing feature rubber seals. Bronze bearing is porous for continuous lubrication. A few ball bearing industry use steel as a standard material. The high carbon chromium steel, which is sturdy and wear-resistant, is the most preferred heavy-duty bearing.