RB Series

The RB Series is a standard crossed roller bearing designed for applications requiring high rigidity, high rotational precision, and the ability to accommodate complex loading conditions. With an integrated inner ring and a split outer ring, the RB Series offers a balanced combination of compact design, load capacity, and installation flexibility, making it a versatile solution for a wide range of precision machinery applications.

Typical Applications：

Industrial robotic arms and manipulator joints

CNC machining center rotary tables and indexing tables

Precision rotary tables and direct drive motors

Medical equipment and inspection instruments

Semiconductor manufacturing equipment and measurement devices

Aerospace and military radar equipment

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Inquiry	Type	Brand	Shaft Diameter	Inner Ring	Outer Ring	Roller Pitch Circle Diameter	Width	Greasing Hole	Chamfer	Shoulder Height		Basic Load Rating（Radial）		Weight
Inquiry	Type	Brand	Shaft Diameter	d [mm]	D [mm]	dp[mm]	B B1 [mm]	a-b	r(min)	ds	Dh	C kN	C0 kN	Weight

RB series bearings utilize cylindrical rollers arranged orthogonally—at 90° angles to each other—within a V-shaped raceway. This crossed roller configuration provides line contact between the rollers and raceways, enabling the bearing to simultaneously support radial loads, axial loads in both directions, and tilting moments in a single, compact unit.

The key structural feature of the RB series is its split outer ring. This design allows for easy assembly and disassembly, while the solid inner ring maintains rigidity and ensures high precision for inner ring rotation applications. The bearings are typically equipped with spacer retainers between rollers to prevent friction and maintain smooth, stable rotation.