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Deep groove ball bearings

Photo: Deep groove ball bearings

The most typical type of bearing, these are used in a wide range of fields. They include grease-enclosed sealed and shield bearings for ease of use.

Other types include bearings with a locating snap-ring to facilitate positioning when mounting the outer ring, expansion compensating bearings that absorb variations in bearing fitting surface dimensions due to housing temperature, and TAB bearings that are resistant to contamination in lubricating oil.

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Angular contact ball bearings

Photo: Angular contact ball bearings

In these ball bearings, the direct line that connects the inner ring, balls, and outer ring has a given angle in the radial direction (the contact angle).

This angle is generally designed with three kinds of contact angle.

These bearings can bear axial loads, but because of the contact angle cannot be used singly and must be used in pairs or combinations.

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Four-point contact ball bearings

Photo: Four-point contact ball bearings

These are angular contact ball bearings with the inner ring divided into two. When the outer ring and inner ring are pushed in the radial direction, the balls make contact with the inner ring and outer ring at four points. One bearing is able to bear an axial load from both directions, and can be used in a two-point contact state under a general pure axial load or under a composite load with large axial load.

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Needle roller bearings

Photo: Needle roller bearings

These bearings use small needle rollers, 6mm or less in diameter with a width 3 to 10 times diameter, as rolling elements. As such, they feature low cross-section height, high load capacity relative to dimensions, and high rigidity due to the number of elements, and are suited to wobbling or pivoting motion.

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Tapered roller bearings

Photo: Tapered roller bearings

Tapered roller bearings are designed so the inner and outer ring raceway and the apex of the tapered rollers intersect at one point on the bearing centerline. For this reason, the rollers are pushed against the inner ring rib and roll guided by the rib, receiving the loads from the inner ring raceway surface and the outer ring raceway surface as a combined load on the raceway surface.

Component force is produced in the axial direction when a radial load is applied, so the bearings must be used in pairs. The inner ring with rollers and outer ring separate, facilitating mounting with clearance or preload. However, assembled clearance is hard to manage and calls for attention. Tapered roller bearings are capable of supporting large loads, both axial and radial.

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Polylubu Bearings

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Long-Life AS Series TAB/ETA Bearings

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Photo: Long-Life AS Series TAB/ETA BearingsLong-Life AS Series TAB/ETA Bearings

Ultra thin wall type ball bearings

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Photo: Ball and Roller BearingsBall and Roller Bearings

Ball screw support bearings

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Cam followers

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Roller followers

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Bearings for Special Environments

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Photo: Ball and Roller BearingsBall and Roller Bearings

Photo: Bearings for Clean EnvironmentBearings for Clean Environment

Deep groove ball bearings for High-speed Servo Motors [Type MA]

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Photo: Deep Groove Ball Bearings for High-speed Servo MotorsDeep Groove Ball Bearings for High-speed Servo Motors

Linear ball bearings

Photo: Linear ball bearings

These are composed of an outer ring, steel balls, and a cage, where the steel balls circulate the ball bearing. The result is a smooth and precise infinite linear motion.

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Linear roller bearings

Photo: Linear roller bearings

These contain cylindrical rollers capable of circulating within the block (orbital unit), enabling smooth linear motion on a flat surface. The cylindrical rollers are retained and guided by the cage (separator) and the ribs of the block.

The construction does not allow contact between adjacent rollers, meaning the friction coefficient is low.

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Linear flat roller bearings

Photo: Linear flat roller bearings

These are composed of a needle roller integrated into a flat cage. Linear flat roller bearings can be inserted on two planes to ensure smooth reciprocating motion with less friction coefficient.

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Linear Motion Products

Photo: Linear Motion Products

Suitable for long stroke transport of both light and heavy objects. Stroke adjustable in units of one millimeter, multiple tables can be combined.

Maintenance

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