IKO International announces a new addition to its roller bearing family, CRBF Mounting Hole Type, High Rigidity, Crossed Roller Bearings. These specialized bearings feature a space-saving design, with rollers alternately crossed at right angles between inseparable inner and outer rings. Because the rollers make inline contact with raceway surfaces, elastic deformation under load is minimal.
Bearings can simultaneously accommodate loads from all directions, including radial, axial and moment loads. Applications include industrial robots, machine tools, medical equipment and other machinery requiring high rigidity and superior accuracy in a compact footprint.
CRBF Crossed Roller Bearings feature numerous mounting holes on both the inner and outer rings, enabling fast and easy mounting without the need for special housings and fixing plates. The roller guidance system incorporates special separators between cylindrical rollers, allowing ultra-smooth and high-speed rotation. With regard to the bearing's sealing structure, open and sealed types are readily available. The open structure is well suited to low-energy applications, due to the absence of any sealing friction. Sealed types feature synthetic rubber seals that provide excellent protection against dust and contaminants, as well as prevent grease from escaping. Shaft diameters range from 10 to 80 mm for both types.
Because the rotational torque of CRBF Crossed Roller Bearings is lower than that of traditional plain bearings, the difference between static and dynamic torque capacities is small. This enables both lower power consumption and a reduced operating temperature rise, thereby increasing overall machine efficiency. The operating temperature range for CRBF bearings is -20° to +110° C. Basic dynamic load ratings range from 2,910 to 51,100 N.
IKO is a world leader in needle roller bearings and linear motion rolling guides and was the first Company in Japan to initiate technical developments on the needle roller bearing. Compared with traditional ball bearings and other roller bearings, the needle roller bearing is small in size and light, but offers a very high load capacity. Needle roller bearings help to make the overall equipment more compact, thus saving money and resources. IKO has also developed a range of linear motion rolling guide units for applications that require extremely high levels of precision, such as semiconductor manufacturing equipment.