1. Bearing Terms and Definitions
Bearing: A machine element used to support another part of the machine and guide it during relative motion.
Ball bearing: A ball bearing consists of an outer ring, inner ring, balls, and a cage. The outer and inner rings hold the balls in place which reduces friction in the moving parts. Ball bearings are used in a variety of applications, from the most basic machines to the most sophisticated and precise machines.
Roller bearing: This type of bearing is similar to a ball bearing, but with longer cylinders instead of balls. The cylinders, or rollers, reduce friction in the moving parts. Roller bearings are used in both heavy and light duty applications and are suitable for applications where angular contact is required.
Angular contact bearing: This type of bearing contains angular contact points which help to reduce friction between the moving surfaces. The angular contact points allow the bearing to support loads that are misaligned in relation to the axis of rotation.
Thrust bearing: A bearing which is designed to absorb axial forces in either direction. This type of bearing is used in motors, pumps, fans and other machinery.
Needle bearing: This type of bearing has thin, cylindrical rollers which reduce friction during relative motion. This type of bearing is used in applications that require a high degree of accuracy and precision.
Sealed bearing: A bearing that is closed off from the environment by a dust shield or seal. This type of bearing provides a higher level of protection from dust, dirt and other contaminants which can decrease the life of the bearing.
Radial bearing: This type of bearing is designed to support loads that act in a radial direction. Radial bearings are typically used in applications that require a highly precise and reliable bearing.
Rolling element bearing: This type of bearing is similar to radial bearings but uses rolling elements instead of balls to reduce friction during relative motion. This type of bearing is used in applications where extremely precise and reliable relative motion is required.
2. Bearing Arrangements and Components
Bearing arrangement: The way in which several bearing components are laid out in relation to each other to ensure the best performance of a machine or piece of equipment. This includes the size, type, number, and location of the bearings used. The bearing arrangement can significantly affect the performance, reliability and durability of the machine or piece of equipment.
Bearing housing: The part of the machine or equipment which holds the bearing components in place. The bearing housing should be designed to provide protection for the bearing components from the environment and other components of the machine or equipment.
Support rings: Rings which are used to support the outer or inner rings of bearings. The most common types of support rings are single row and double row.
Flange: A metal or plastic part which is used to mount a bearing onto the equipment or machine. A flange should be designed to provide support for the bearing and ensure that it will not move during operation.
Bolt and nut: Fasteners used to hold a bearing in place. The most common types of bolts and nuts are hex bolts and hex nuts.
Retainer: An outer ring which is used to hold the bearing components in place and reduce friction during relative motion.
Lubricant: A substance which is used to reduce friction in bearings. The most common types of lubricants used in bearings are grease and oil.
Bearing shield: A cover which is placed over the bearing to protect it from dust, dirt and other contaminants. Bearing shields should be designed to allow for airflow to keep the bearing cool and reduce wear.
Seal: A barrier which prevents dust, dirt and other contaminants from entering the bearing. Seals should be designed to allow for minimal friction and maximum protection from the environment.
3. Bearing Installation and Removal
Bearing installation: The process of fitting the bearing components into the housing and ensuring that they are securely fastened. This process should be done according to the manufacturer’s instructions to ensure that the bearing is installed properly and will perform as expected.
Bearing removal: The process of removing the bearing components from the housing. This process should be done carefully to avoid damaging
