ZIBOO NTN 6338 Single Row Radial Ball Bearing 190x400x78mm

ZIBOO NTN 6338 Radial Ball Bearing

The ZIBOO NTN 6338 is a single row radial ball bearing designed for rotating machinery that requires low friction and high-speed capability. Its open type construction allows direct lubrication access and suits applications where external sealing is provided separately. Electricians and maintenance technicians fitting motor shafts or gearboxes will find the 190 mm bore, 400 mm outer diameter and 78 mm width match standard mounting dimensions.

Open type limits contamination protection

Because the bearing is supplied open, it has no integral shields or seals to retain grease or exclude dirt, moisture and abrasive particles. Installers must provide external sealing arrangements and a regular relubrication schedule to prevent premature wear. The design is therefore unsuitable for environments where sealing cannot be reliably maintained or where maintenance intervals are excessively long.