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Koyo Technical Information

a. Arrangement in which fixed and free sides are distinguished
Example Bearing arrangement n Fr Fa Q Application example
Free side Fixed side
1 Angular contact ball bearingAngular contact ball bearing (Back-to-back arrangement) Cylindrical roller bearingCylindrical roller bearing (NU type) High Normal Normal Low Motors

n : Rotational speed; Fr : Radial load; Fa : Axial load; Q : Aligning capability

b. Arrangement in which fixed and free sides are not distinguished
Example Bearing arrangement n Fr Fa Q Application example
2
Angular contact ball bearing
(Back-to-back arrangement)
Angular contact ball bearing Angular contact ball bearing
(Face-to-face arrangement)
High Light Normal Low Machine tool spindles
3 Angular contact ball bearing Angular contact ball bearing
(Back-to-back arrangement)
High Normal Normal Low Machine tool spindles

n : Rotational speed; Fr : Radial load; Fa : Axial load; Q : Aligning capability

c. Application to vertical shafts
Example Bearing arrangement n Fr Fa Q Application example
4 Fixed side - Angular contact ball bearingFixed side
Angular contact ball bearing
(Back-to-back arrangement)
High Normal Normal Low Vertical motors

n : Rotation speed; Fr : Radial load; Fa : Axial load; Q : Aligning capability

d. Gear transmission two-point-support system

A shaft is generally supported by two or more bearings. A machine is a collection of these assemblies.

As a shaft model, the gear transmission mechanism is the simplest and most common. The Menu entitled Two-point-support System is available, by which loads the bearing is exposed to, service life, safety factor can be obtained based on gear specifications, location, and operation conditions.

Gear transmission two-point-support system