1. Classification and Features

(1).Thrust ball bearings
Balls are arranged between a set of washers (a shaft
washer and housing washer) and the contact angle is 90°.
Axial loads can be supported in only one direction and radial
loads cannot be supported. These bearings are unsuitable
for high speed operation. Table 1 shows the standard cage
models.

(2). Cylindrical roller thrust bearings
These bearings use cylindrical rollers and have single row,
double row, 3 row, 4 row, and also duplex types. Bearings
can support only axial loads and are suitable to heavy loads.
Their axial rigidity is high. Cages are the machined type

(3).Tapered roller thrust bearings
These are thrust bearings using tapered rollers, and the
single type bearings have three types of housing washers.
One type is the housing raceway with a rib, the other one is
without a rib, and the third bearing is the full complement
roller type. Double type bearings are mainly used to support
axial loads on the roll neck of rolling mill. Machined cages
are used for cages.

(4). Self-aligning thrust roller bearings
These bearings have a self-aligning nature using barrel shaped rollers. The allowable aligning angle varies
depending on the bearing's dimension system, but it is 1°-
2° for normal loads. Cages are machined type and the guide
sleeve is on the axial housing raceway. Since the load
capacity for axial loads is high, these bearings can support a
certain amount of radial load in the instances that axial loads
are applied. However, it is necessary to use these bearing
where the load conditions meet Fr/Fa 0.55.
These bearings have some spots where lubricant
cannot enter such as the gap between the cage and
guide sleeve. It is necessary to use oil lubrication even
in low speed operation.

Introduction
Thrust ball bearing is composed of race, blowout patch and cage.

Application fields
Crane hook, vertical pumps, vertical centrifuge, jack, low speed reducer