Koyo 63/28 C4 Ball Bearing 28x68x18mm 02Z311375A a world-class Japanese precision bearing

a world-class Japanese precision bearing manufacturer supplying OEM-quality bearings to vehicle manufacturers globally

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Reference Number: ET2354

Constructed from PTFE/ACM composite material with a left-hand twist swirl and dust lip

Koyo 63/28 C4 Ball Bearing 28x68x18mm 02Z311375A a world-class Japanese precision bearingKoyo 63 28 C4 Deep Groove Ball Bearing 28x68x18mm The Koyo 63 28 C4 is a deep groove single row ball bearing with C4 internal clearance, designed for high heat environments and extended wear resistance. The C4 clearance makes it ideal for heavy duty machinery, automotive engines, and high speed applications where standard bearings might fail under thermal stress. Inner Diameter: 28mm Outer Diameter: 68mm Width: 18mm Clearance: C4 (extended internal