BCA 6311 DD Deep Groove Ball Bearing - 55x120x29mm, Double Rubber Seal, Heavy Duty Industrial Grade
The BCA 6311 DD is a premium single-row deep groove ball bearing engineered for high-load industrial applications. Featuring standard ISO dimensions of 55mm bore (d), 120mm outer diameter (D), and 29mm width (B), this robust component belongs to the heavier 6300 series, providing superior radial and significant axial load capacity (Dynamic Load Rating Cr: 78.5 kN). The core technical feature is the 'DD' designation, signifying contact rubber seals (low friction, high protection) mounted on both sides. These seals are critical for preventing contamination ingress (dust, moisture, particulates) and retaining the high-quality internal grease, ensuring extended service intervals in challenging, dirty, or wet environments.
Designed for reliability and operational performance, the BCA 6311 DD minimizes friction and heat generation, making it an ideal, high-efficiency choice for demanding applications such as electric motors, heavy-duty pumps, industrial gearboxes, and large agricultural machinery. Choosing BCA means investing in proven quality that reduces costly downtime and maintenance intervention. Its factory-lubricated, sealed design ensures lifetime reliability under moderate speed applications, delivering exceptional long-term value and high operational efficiency across demanding manufacturing and industrial sectors.
Key Features
Double contact rubber seals (DD) offer superior protection against dust and moisture contamination.
Heavy-duty 6300 series design ensures high load-carrying capacity and robustness.
Factory pre-lubricated with high-performance grease for maintenance-free operation.
Precision engineered for reliable high-speed operation in industrial machinery.
C3 internal clearance suitable for applications involving thermal expansion or high shock loads.
