In machining centers, where precision is paramount, BRZB’s axial-radial cylindrical roller bearings are often the go-to choose for supporting rotary tables, indexing heads, and multi-spindle heads. BRZB produces these high-precision bearings for a wide range of shaft diameters, spanning from 80 mm to 950 mm. Thanks to their meticulously engineered internal structure and the tight manufacturing tolerances employed, these bearings achieve a radial run-out that surpasses, and an axial run-out that closely approaches, the P4 tolerance class.

Crossed roller bearings are designed to handle a variety of load types. Thanks to the unique X arrangement of the cylindrical rollers, these bearings can support axial forces in both directions, radial loads, tilting moment loads, and any combination thereof. This versatility often allows for the replacement of conventional two-bearing setups (one radial and one axial bearing) with a single crossed roller bearing.

CRB Series (fig.2): These bearings conform to ISO dimension series 18 as per DIN 616. They come without gear teeth, are unsealed, greased, and available with standard clearance, reduced clearance, or preloaded. The outer ring is split circumferentially and secured by three retaining rings.

RU Series (fig.3): These are gearless bearings that are sealed on both sides, greased, and preloaded. They feature a centering stud on both the inner and outer diameters and can be directly screw-mounted onto adjacent structures. A lubrication nipple is located on the outer ring’s circumference.

RB Series (fig.4): These bearings optimal for inner ring rotation are required. A lubrication nipple is found on the circumference of the ring without gear teeth.

RA Series (fig.5): These bearings optimal for outer ring rotation are required. They also feature a lubrication nipple on the ring’s circumference without gear teeth.