B7028-C-T-P4S-UL

The B7028-C-T-P4S-UL is a high-precision spindle bearing, specifically a single-row angular contact ball bearing, engineered for demanding applications requiring exceptional guidance accuracy and high-speed capabilities. With an inner diameter of 140mm, an outer diameter of 210mm, and a width of 33mm, this bearing features a 15-degree contact angle ("C") and a durable laminated fabric cage ("T"), often guided by the outer ring for stable high-speed performance. The "P4S" designation signifies a super-precision tolerance class, exceeding P4 standards, ensuring minimal runout and superior accuracy. Furthermore, "UL" indicates a universal design, allowing for single-bearing mounting or combination in pairs or sets with light preload, making it highly versatile for main spindles in machine tools and other precision machinery where rigidity, accuracy, and high rotational speeds are paramount.

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