Thrust Ball Bearings

Thrust ball bearings are separable, including a shaft washer (fit with journal), a housing washer (fit with bearing block), a group of steel balls and a cage, this makes it very convenient to fit with a journal and bearing block respectively. Thrust ball bearings have different structures which can be divided into single direction thrust ball bearings, double directions thrust ball bearings and angular contact thrust ball bearings. The bearings can be axial loads, but not radial loads.

Application

It is only applicable to the machine parts bearing one axial load and low speed, such as crane hook, vertical pump; vertical centrifuge, jack, low speed reducer, etc. The shaft ring, seat ring and rolling element of the bearing are separated they can be assembly and disassembly separately.

Thrust ball bearings with flat back face

Thrust ball bearings with flat back face are separable and divided into single direction and double direction designs. The single direction thrust ball bearings with flat back face can only be used to carry axial load in one direction and limit the axial displacement in single direction. The double direction thrust ball bearings with flat back face can be used to carry axial loads in both directions and limit the axial displacements in both directions. Neither of them can carry radial loads.

Single direction thrust ball bearings with flat back face

The single direction thrust ball bearings can only be used to carry axial load in one direction. Single direction thrust ball bearings have planar housing washer and an aligning seat washer. Generally, planar housing washer will not allow any angular error, however, when designing bracing structures, a gap of 0.5-1mm between the outer diameter of housing washer and the fitting surface of bearing block can be kept to correct the angular errors, which, would be made when mounting. Please note aligning housing washer needs to be ordered additionally.

Application

It is only applicable to the machine parts bearing one axial load and low speed, such as crane hook, vertical pump; vertical centrifuge, jack, low speed reducer, etc. The shaft ring, seat ring and rolling body of the bearing are separated and can be installed and removed separately.

Double direction thrust ball bearings

Double direction thrust ball bearings with flat back face Double-direction thrust ball bearing can carry axial loads in double directions, but it cannot carry radial load. Double-direction thrust ball bearings can make an axial location in two directions. Double-direction thrust ball bearings also have planar housing washer and self-aligning seat washer. Generally, planar housing washer cannot allow any angular error; however, when designing bracing structures, a gap of 0.5-1mm clearance between the outer diameters of bearing seat mating surface for compensation, that the bearing housing can be kept to correct the angular errors, which would be made when mounting. Self-aligning housing washer need to be ordered and manufactured separately.

Bidirectional thrust ball bearing can bear axial load in two directions. But it cannot bear pure radial load. Bidirectional thrust ball bearing can be used for axial positioning in two directions. The center ring can be installed on the shaft.

Application

Mainly used in automobile steering mechanism, machine tool spindles and so on.

Angular contact trust ball bearings

The angular contact thrust ball bearing mainly carries axial load, and it can also carry a certain radial load. Compared with thrust ball bearings of the same dimension, the limiting speed is also higher. It can make an axial location in one direction. Angular contact thrust ball bearings can make up for the weakness of the thrust ball bearings with flat back face which cannot carry radial loads. The contact angles are 45°and 60°. The smaller the degree of contact angle, the higher the capacity of the radial load is.