Roller Bearings are a type of roller bearing that uses cylinders (rollers) to maintain the separation between the moving parts of the bearing. The purpose of a roller bearing is to reduce rotational friction and support radial and axial loads.They can operate at moderate to high speeds.
Compared to ball bearings, roller bearings can support heavy radial loads and limited axial loads (parallel to the shaft).
Tapered roller bearings (TRB):
Tapered Roller Bearing can take both radial and axial loads and used for gear boxes for heavy trucks, bevel-gear transmission, lathe spindles, etc. Tapered roller bearings are made of high carbon chrome steel. They consist of four basic components including: the cone (inner ring), the cup (outer ring), tapered rollers, and a cage (roller retainer). The cone, cup and rollers carry the load while the cage spaces and retains the rollers on the cone.
Needle roller bearings:
It use small diameter of rollers. They are used for radial load at slow speed and oscillating motion. They have a high radial load capacity and are exceptionally for bearing applications where radial space is limited. They have the advantage of light weight and occupy small space. They are used in aircraft industry, live tail stock centers, bench-drill spindles, etc.
Cylindrical roller bearings:
Spherical Roller Bearings:
Cylindrical roller thrust bearings:
Cylindrical roller bearings:
Cylindrical Roller Bearings are bearing in which cylinders are used as the rolling elements as opposed to balls in ball bearings. They have a relatively high radial load capacity and are suitable for high speeds. This allows even higher loads but at the expense of speed.
Spherical Roller Bearings:
Spherical roller bearings are ideal for heavy loads and tough operating environments. They are designed to work in applications where severe misalignment exists whether from mounting or shaft deflection and with relatively heavy radial loads and some axial loads in either direction.They are self-aligning because the center of curvature of the outer ring raceway surface coincides with the bearing axis. They are also extremely resistant to shock loads and their self-aligning feature allows full capacity loading despite shaft deflection.
Cylindrical roller thrust bearings:
They permit rotation between parts, but they are designed to support a high axial load. They are composed of two washers (raceways) and the cylindrical roller elements which are typically caged. Ball thrust bearings can generally operate at higher speeds but at lower loads While roller thrust bearings can generally operate at lower speeds but at higher loads.