A Comprehensive Guide

These bearings come in versions with or without fixing holes in the outer ring. The ones with holes can be directly screw-mounted onto adjacent structures, offering a cost-effective solution by eliminating the need for a separate locating bore or bearing cover.

For applications where high precision is not critical, bearings with less stringent tolerances are available.

Screw drive bearing setups often have unique requirements that conventional bearings can’t fully meet. A wide range of BRZB angular contact thrust ball bearings is available to meet both technical and economic demands for feed spindles.

These bearings are available in single, double, or triple row configurations. They are self-retaining and consist of thick-walled, geometrically stable outer rings, ball, and cage assemblies, and one or two-piece inner rings. Some series feature outer rings with through holes for easy flange mounting.

Available as:

7602, 7603 and TAC-B, single row (fig.1, ①without seals; ②with seals)

ZKLF, double row with fixing holes (fig.2①with seals; ②matched)

ZKLN, double row without fixing holes (fig.3①with seals; ②matched)

ZKLR, bearing unit with fixing holes (fig.4)

ZKLFA and DKLFA, with seals, flange and fixing holes (fig.5 ①double row; ②triple row)

Thanks to the 60° contact angle, these bearings can support high axial and radial forces.

Multiple row angular contact thrust ball bearings can be arranged in back-to-back, face-to-face, or tandem configurations, each affecting the bearing’s tilting rigidity. The back-to-back arrangement offers high tilting rigidity and longer lifespan under additional radial loads, while the face-to-face arrangement has lower tilting rigidity and a shorter lifespan under similar conditions.

The operating temperature is limited by the dimensional stability of the bearing components, the cage, the lubricant, and the seals. Under a room temperature of +20 °C, the bearings operation temperature range would be between – 30°C to + 120°C.

These bearings typically have plastic cages. In the 7602, 7603, and TAC-B series, polyamide cages are indicated by the suffix TN1.