2—Rolling Bearing Types and Characteristics

In rolling bearings, the balls or rollers held between the raceway rings rotate to support the load. Different types offer different load capacities and support low or high rotational speeds.

 Rolling Element
BallsRollers
CharacteristicsLower load capacity,
good for high speeds		Higher load capacity,
good for low speeds
LoadMainly radial loads
(loads perpendicular to the shaft)		Radial ball bearingsRadial roller bearings
Mainly axial (thrust) loads
(loads in the same direction as the shaft)		Thrust Ball BearingsThrust roller bearings

Radial Ball Bearings: Types and Characteristics

Radial ball bearings, often just called "ball bearings”, are the most common type of bearing.

Table Key:

¥: Excellent, ◎: Good, 〇: Fair, ৹: Conditional, ×: Unsuitable, ←: One direction only, ↔: Both directions

☆: Applicable, ★: Applicable, but allow for shaft expansion/contraction at fitting surfaces

Table detailing the features and characteristics of different types of radial ball bearings. Though all types can handle axial, radial, and combined loads and high speeds, they differ in the extent of these capacities, as well as their level of accuracy, capability for ring separation, etc.

Radial Roller Bearings: Types and Characteristics

Radial roller bearings, often just called “roller bearings”, feature a variety of roller shapes that make them better suited to heavy loads than ball bearings.

Table Key:

¥: Excellent, ◎: Good, 〇: Fair, ৹: Conditional, ×: Unsuitable, ←: One direction only, ↔: Both directions

☆: Applicable, ★: Applicable, but allow for shaft expansion/contraction at fitting surfaces

Table detailing the features and characteristics of different types of radial roller bearings. Though all types can handle radial loads and high speeds, they differ in the extent of these capacities, as well as their level of accuracy, capability for self-alignment, etc.

Thrust Ball Bearings: Types and Characteristics

Thrust bearings can feature balls or rollers and are well-suited to axial (thrust) loads.

Table Key:

¥: Excellent, ◎: Good, 〇: Fair, ৹: Conditional, ×: Unsuitable, ←: One direction only, ↔: Both directions

☆: Applicable, ★: Applicable, but allow for shaft expansion/contraction at fitting surfaces

スラスト軸受の形式と特徴：表