HCB7215-C-T-P4S-UL

d	75 mm
D	130 mm
B	25 mm
Cr	73,000 N
C0r	42,500 N
Cur	3,400 N
nG Grease	14,000 1/min
nG Oil	22,000 1/min
≈m	1.05 kg

The HCB7215-C-T-P4S-UL is a high-precision spindle bearing engineered for machine tool applications that demand the highest levels of accuracy and speed. At its core, this angular contact ball bearing features advanced ceramic (Si3N4) balls, which are significantly lighter and harder than traditional steel balls. This hybrid construction reduces rotational forces and heat generation, allowing for higher operational speeds and enhanced thermal stability. The "C" designation indicates a 15° contact angle, optimized for absorbing radial loads while accommodating axial loads in one direction, ensuring superior performance in high-speed milling, grinding, and turning spindles.

Achieving the P4S tolerance class, the HCB7215-C-T-P4S-UL bearing guarantees exceptional dimensional and running accuracy. This level of precision is critical for applications where surface finish and machining tolerance are paramount, minimizing vibration and ensuring consistent, repeatable results. The "UL" suffix signifies that the bearing is designed for universal matching with a light preload. This allows for flexible mounting in pairs-whether in back-to-back (DB), face-to-face (DF), or tandem (DT) arrangements-providing engineers with the versatility to configure bearing sets that meet the specific rigidity and load requirements of their high-performance spindle designs.

The HCB7215-C-T-P4S-UL is built not just for speed, but for endurance. The combination of ceramic balls and high-purity steel rings results in a bearing with a longer service life and extended grease life compared to all-steel equivalents. The reduced friction and lower operating temperatures inherent in its design minimize wear and degradation. This focus on durability translates to less machine downtime, reduced maintenance intervals, and a lower total cost of ownership, making it a smart investment for any precision machining operation looking to maximize both productivity and quality.

 

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