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6311 Bearing: 55mm Bore, 120mm OD, 29mm Width. Chrome Steel Material: Our bearings are made of quality chrome steel, offering excellent strength, hardness, wear resistance, and corrosion resistance. They can withstand significant radial loads, providing reliable support in various applications. C3 (Greater Clearance than CN): It provides increased space or play between the rolling elements and the raceways to accommodate factors like thermal expansion or misalignment. Open Type: For in-place lubrication and applications in cleaner environments. Suitable for high-speed and even very high-speed operation. Application: Rolling bearings find applications in numerous industries and equipment where rotational motion and load-carrying capability are required, such as motors, mold manufacturing, automation and conveying equipment, agricultural machinery, precision instruments, etc.