CRBT series

CRBT 105 Cross roller bearings

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CRBT 105 Cross roller bearings

Metric Dimensions (mm)
Bore d10mmBearing inner bore
Outer Dia. D21mmBearing outer diameter
Width B5mmBearing width
Structural Dimensions (mm)
Chamfer0.15r/minChamfer dimension
Roller Pitch Dia.14.7mmRoller pitch circle diameter
Shaft Shoulder ds12.5mmShaft shoulder diameter ds
Shaft Shoulder Dh17mmShaft shoulder diameter Dh
Radial Load (KN)
Dynamic Load Cr1.12KNBasic dynamic radial load rating
Static Load C0r0.8KNBasic static radial load rating
Other Parameters
Weight0.009kgBearing weight
CRBT 105 ultra‑thin crossed roller bearing features extremely compact cross‑section and lightweight body. Orthogonally arranged cylindrical rollers enable it to withstand radial, axial and overturning moment loads at the same time. It delivers high rotational accuracy and high rigidity under limited installation space, widely used for miniature robot joints, optical instruments, small rotary platforms and precision testing equipment.

CRBT series crossed roller bearings are ultra-compact, ultra-thin lightweight crossed roller bearings with integral inner and outer rings. Cylindrical rollers are arranged alternately at 90°, enabling a single bearing to simultaneously support radial loads, bidirectional axial loads, and tilting moment loads. Compared with the CRBS (RA type), the thickness is significantly reduced with a cross-section width of only 5mm, offering lighter weight, minimal space occupation, and ultimate lightweight construction.

The raceways are manufactured with ultra-precision grinding, achieving accuracy grades up to P4/P2, with controllable rotational clearance and stable friction torque. Rigidity is superior to thin-section ball bearings of the same size. Materials are available in GCr15 bearing steel or 440C stainless steel, with open or sealed configurations.

Widely used in small collaborative robot joints, humanoid robot gimbals, medical imaging equipment, miniature harmonic drive modules, surveillance turntables, precision inspection instruments, and other compact, lightweight precision rotating mechanisms. They are ideal as core support bearings for miniature, high-precision, compact equipment.

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