Four-Point Contact Ball Bearings

# Four-Point Contact Ball Bearings: An Analysis of Advantages, Features, and Manufacturing Processes Four-Point Contact Ball Bearings (FPCB) are precision bearings where a single steel ball forms four contact points with the inner and outer ring raceways. Widely used in scenarios such as robot slewing rings, machine tool spindles, and crane hooks, their structural innovation and performance advantages hold significant industrial value.   Their core advantages focus on compactness and load-bearing efficiency. First, they exhibit outstanding bidirectional load-bearing capacity—a single bearing can withstand bidirectional axial loads, replacing the combination of two single-row angular contact bearings and greatly simplifying shafting design. Second, they feature a compact and lightweight structure. The integrated design reduces the space occupied by the bearing, with weight 20% lower than that of double-row bearings of the same specification, adapting to the miniaturization needs of pre…