Robotics

KRLF series cross-roller bearings consist of an outer ring, an inner ring, and cylind­rical rollers arranged in a cross pattern, separated from one another by plastic
spacers. The inner and outer rings, which are machined from a single piece, are provided with mounting holes, elimi­nating the need for a mounting flange or housing. This facili­tates easy instal­lation and reduces the impact of potential instal­lation errors, thereby ensuring that the KRLF cross-roller bearings deliver
optimal perfor­mance. Due to the cross-arranged rolling elements, this bearing design accom­mo­dates both high radial and axial forces from both direc­tions, as well as tilting moments. This allows conven­tional design solutions with two bearing positions to be reduced to a single one.
Furthermore, this compact design is charac­te­rized by high rigidity and high running accuracy and is suitable for appli­ca­tions with both inner ring and outer ring rotation. In addition to the bearing designs listed here, SBN offers custom solutions tailored to specific customer requi­re­ments.

KRL series cross-roller bearings consist of a one-piece outer ring, a one-piece inner ring, and cylind­rical rollers arranged in a cross pattern, separated from one another by plastic spacers. Due to the cross-arranged rolling elements, this bearing design can accom­modate high radial and axial forces in both direc­tions, as well as tilting moments. This allows conven­tional designs with two bearing locations to be reduced to a single one. KRL cross-roller bearings, which are suitable for appli­ca­tions with both inner ring and outer ring rotation, are parti­cu­larly charac­te­rized by their small cross-sections and low weight, enabling the realization of rigid, weight-saving, and space-optimized designs. Three bearing widths are available: 5 mm, 8 mm, and 13 mm. A seal is available for the 8 mm and 13 mm widths. The smallest inner diameter is 10 mm. While maintaining the same cross-section, different bore diameters are also available upon customer request. The bearings are available in the tolerance classes PN, P6, P5, and P4.

Also available with a split outer ring in the KRLC version.

Flex bearings are ball bearings with thin, defor­mable rings that have been specially developed for shaft-driven gear units. They are mounted on the ellip­tical shaft generator and conform to its shape. During operation, the outer ring in parti­cular is conti­nuously bent. For this reason, the bearing geometry, material, and bearing clearance must be precisely tailored to the appli­cation.

SBN-Flex bearings feature low shoulder heights, a plastic snap-fit cage, and a radial clearance adapted to the ellip­tical shaft. The dimen­sions of the inner and outer rings can be custo­mized to meet specific customer requi­re­ments.

Precision thin-section bearings in the 617, 618, and 619 series are charac­te­rized by their small cross-sections and low weight. This makes them parti­cu­larly suitable for compact and weight-optimized designs in robot axes, drive units, and other automation appli­ca­tions.

High-precision raceways and precision balls made of high-quality rolling-element bearing steel ensure optimized friction and noise charac­te­ristics. In addition to the standard tolerance class PN/P0, higher accuracy classes as well as various clearance, sealing, and lubri­cation options are available. Upon request, SBN also offers stainless steel versions, coatings, ceramic balls, and custom dimen­sions.

DRZ series inch-sized thin-section bearings combine a small cross-section with low weight, thereby enabling compact, weight-optimized designs. SBN offers three designs: C‑type radial deep-groove ball bearings accom­modate radial and axial forces in both direc­tions. Angular contact ball bearings in the A series support radial and axial loads in one direction and are also available in pairs in O, X, or tandem arran­ge­ments. Four-point contact bearings in the X series support high axial forces in both direc­tions, tilting moments, and low radial loads.

Depending on the appli­cation, various tolerance classes, stainless steel versions, ceramic balls, seals, cage materials, and lubri­cants are available. High-precision raceways help ensure optimized friction, noise, and running charac­te­ristics.

The linear-rotary module combines linear motion and rotary motion on a single shaft. By rotating or stopping the respective nut, three types of motion are possible: linear, rotary, and helical. The compact design reduces the required instal­lation space and weight while enabling quiet, smooth, and precise motion sequences.

The module consists of a ball screw with threads and longi­tu­dinal grooves, as well as two different nuts for linear motion and rotation. It is parti­cu­larly well-suited for SCARA robots and for fast, repeatable assembly, joining, and pick-and-place appli­ca­tions.