RKB large thin-section ball bearing with brass cage, cylindrical roller bearing shown in cutaway, and a disassembled multi-row cylindrical roller bearing, alongside the navy RKB Bearing Industries Switzerland logo

RKB — Swiss Premium Industrial Bearings

About RKB

RKB Bearing Industries is a Swiss bearing manufacturer headquartered in Balerna, Switzerland, with roots in the bearing industry dating back to 1936. The company designs and produces a full range of industrial bearings with a particular focus on medium and large sizes for heavy industry, reaching outer diameters of up to 1,925 mm. With a worldwide distribution network, RKB is recognized as a premium-class alternative bearing source for OEM and MRO applications across steel, mining, cement, marine and energy sectors.

Niche / Flagship Products

Four-Row Tapered Roller Bearings (TQO / TQOS)

Heavy-duty bearing sets for the work and backup rolls of rolling mills, handling high radial and axial loads in steel and metals production.

Multi-Row Cylindrical Roller Bearings (Multiroll)

Four-row roll-neck bearings built as a separate inner ring and outer assembly, used extensively in rolling mill stands.

Large-Size Spherical Roller Bearings

Special-design spherical roller bearings for vibrating screens, grinding mills, crushers and offshore jacking systems.

Pin-Type Cages for Large Bearings

Robust cage design for large-diameter roller bearings, engineered for high loads and severe operating conditions.

Tapered Roller Bearing Sets for Vertical Roller Mills

Bearing assemblies for grinding roller units in cement and minerals processing.

Solid Oil Bearings

Bearings filled with oil-impregnated polymer lubrication for applications where relubrication is difficult or contamination is a concern.

Specialized Product Categories

Spherical Roller Bearings

Standard and special designs for heavy radial loads and shaft misalignment in mining, cement, paper and steel equipment.

Cylindrical Roller Bearings

Single-row, double-row, full-complement and multi-row designs for high radial load capacity.

Tapered Roller Bearings

Single-row, double-row and four-row configurations for combined radial and axial loads.

Thrust Bearings

Thrust ball, cylindrical roller thrust, tapered roller thrust and spherical roller thrust bearings in single and double direction designs.

Deep Groove Ball Bearings

Open and sealed/shielded designs for electric motors, pumps and general machinery.

Angular Contact Ball Bearings

Single-row, double-row and four-point contact designs for combined loads and precise shaft location.

Railway Bearings

Bearings engineered for rolling stock and railway applications.

Slewing Bearings

Large-diameter slewing rings for cranes, excavators and rotating platforms.

Other Products & Capabilities

Toroidal Roller Bearings

Bearings accommodating both misalignment and axial displacement in a single unit.

Needle Roller Bearings

Compact bearings for space-constrained, high-load applications.

Spherical Plain Bearings and Rod Ends

Articulating joints for oscillating and tilting motions in hydraulic, marine and construction equipment.

Track Rollers and Combined Bearings

Rolling elements for guide systems, material handling and lifting equipment.

Wound Bearings and Bearing Accessories

Specialty bearings plus sleeves, lock nuts and related mounting components.

Engineering and Testing Services

Pre-sales application engineering, post-sales support, customer training and in-house laboratory analysis.

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