K12008XP0

Constant Section (CS) bearings manufactured from Chrome Steel maintain a uniform cross-sectional height regardless of bore diameter, making them exceptionally compact and space-efficient. Their GCr15/52100 alloy composition, hardened to HRC 60–66, provides superior load capacity and contact fatigue resistance that delivers reliable performance under high-speed, heavy-load, and demanding cyclic conditions. This combination of slim profile and mechanical strength makes them a go-to choice in robotics, medical, and semiconductor applications.

Constant Section (CS) bearings with four-point contact geometry are uniquely capable of carrying radial loads, axial loads in both directions, and moment loads simultaneously within a single row — a combined load capacity that neither a standard radial bearing nor a single-row angular contact bearing can match alone. The four-point contact is achieved through a gothic arch raceway profile, where each ball contacts both the inner and outer rings at two distinct points, effectively replicating the function of a back-to-back angular contact pair in a fraction of the axial space. This makes them the preferred choice where multi-directional loading and spatial compactness must be achieved together, such as in robotic joints, rotary tables, and slewing applications.

Constant Section (CS) bearings with Chrome Steel balls utilize GCr15/52100 alloy spheres hardened to HRC 60–66, delivering the highest load capacity and contact fatigue resistance among standard ball materials within the same compact cross-sectional envelope. The high carbon-chromium composition provides exceptional surface hardness and elastic modulus, enabling the balls to sustain high Hertzian contact stress against the raceways under heavy radial, axial, and moment loads without premature deformation or spalling. This makes them the preferred choice in general industrial, robotic, and precision motion applications where maximum mechanical performance and cost efficiency are the primary requirements.

Why are Chrome Steel rings the most common choice for Constant Section (CS) bearings?

Constant Section (CS) bearings with Chrome Steel rings use GCr15/52100 alloy hardened to HRC 60–66, delivering the highest combination of load capacity, contact fatigue resistance, and dimensional stability among standard ring materials. This makes them the most cost-effective option for the broadest range of industrial and precision motion applications.

What load directions can Constant Section (CS) bearings with four-point contact geometry handle?

Constant Section (CS) bearings with four-point contact geometry are uniquely capable of carrying radial loads, axial loads in both directions, and moment loads simultaneously within a single row — a combined load capacity that neither a standard radial bearing nor a single-row angular contact bearing can match alone.

Why are Chrome Steel balls the most common choice for Constant Section (CS) bearings?

Constant Section (CS) bearings with Chrome Steel balls utilize GCr15/52100 alloy spheres hardened to HRC 60–66, delivering the highest combination of load capacity, contact fatigue resistance, and surface hardness among standard ball materials. This makes them the most cost-effective option for the broadest range of industrial and precision motion applications.