In the fields of precision automation, robotics, and CNC equipment, traditional bearing combinations commonly suffer from problems such as bulky structure, insufficient rigidity, and poor positioning accuracy. The RB series cross roller bearings gradually replace traditional bearing solutions with their unique cross roller structure and integrated load-bearing capacity. This article provides a detailed comparison of the differences between the RB series and traditional bearings, and analyzes their advantages in replacing high-end equipment.
structural difference
Traditional bearings
Traditional rotating structures require multiple sets of bearings (radial bearings+thrust bearings) to withstand loads in different directions, with multiple assembly parts, large structural volume, complex installation, and multi-level clearance.
RB series bearings
The RB series adopts a 90 ° cross roller arrangement, and a single set of bearings can simultaneously withstand radial, axial, and overturning moments.
The outer ring split and inner ring integral structure support precise pre tightening adjustment, enabling zero clearance rotation.
Precision difference
Traditional bearing combinations have accumulated tolerances, large rotational runout, and limited repeatability accuracy, which cannot meet the requirements of ultra precision machining and testing scenarios.
The RB series can achieve P4 and P2 ultra precision levels, with a symmetrical roller contact structure that has minimal deformation, consistent forward and reverse accuracy, and extremely low runout.
Rigidity and load-bearing advantages
Traditional ball bearings are point contact, prone to deformation and weak rigidity under heavy loads and overturning forces.
RB cross roller bearings are in line contact, with uniform force distribution in a cross arrangement. The overall rigidity is increased several times, and the ability to resist overturning and deformation is extremely strong.
Space and installation advantages
Traditional multi bearing combinations take up a large amount of space, have multiple fixed components, and are cumbersome to install and debug.
One RB bearing is equivalent to a complete set of traditional bearings, reducing the structural volume by 30% -50% and significantly streamlining the equipment structure.
Stability and lifespan
Traditional bearing combinations are subject to scattered forces and uneven wear, and are prone to abnormal noise and rapid accuracy degradation during long-term operation.
The RB series has uniform load and stable friction, and has a longer lifespan and stronger stability under high-frequency forward and reverse rotation conditions.
Advantages
Integrated composite bearing, replacing multiple sets of traditional bearings
Pre tighten and eliminate gaps to achieve zero tolerance precision rotation
High rigidity in line contact, anti overturning and non deformation
Minimalist structure, lightweight and space saving
Uniform wear and tear, long-term accuracy does not deteriorate
Replacing traditional bearings with RB series is the most effective structural upgrade solution for robots, CNC turntables, and precision inspection equipment, making them more precise, stable, and compact.
summary
Traditional bearings are only suitable for ordinary low precision scenarios; The RB series cross roller bearings are leading in precision, rigidity, space, and stability, and are the preferred core components for high-end precision rotating mechanisms.
