The NTN 6307LLUC3EM is a premium single-row deep groove ball bearing engineered for demanding industrial environments requiring high reliability and operational longevity. Utilizing the robust 63 series standard, this bearing features a 35mm bore, 80mm outer diameter, and 21mm width, making it ideal for applications subject to significant radial and axial loads. The critical LLUC3EM designation signifies specialized high-performance features: double-lip contact seals (LLU) provide exceptional protection against moisture and contaminants, retaining the high-quality factory lubricant while the C3 internal clearance accommodates thermal expansion and shaft misalignment typical in high-speed or heavily fitted machinery. Furthermore, the inclusion of an EM suffix denotes a precision machined brass cage, offering superior performance under high-vibration conditions, extreme temperatures, and high acceleration/deceleration cycles far exceeding the capability of standard pressed steel cages.
Designed specifically for critical industrial applications such as high-output electric motors, heavy-duty pumps, gearboxes, and industrial fans, the NTN 6307LLUC3EM ensures reduced maintenance downtime and improved energy efficiency. The advanced sealing and C3 clearance work synergistically to maximize the bearing's service life in contaminated or high-temperature operations. Choosing this NTN product guarantees access to premium Japanese engineering standards, providing a precise, durable, and highly reliable component suitable for OEM installation or aftermarket replacement where operational continuity is paramount.
Key Features
LLU Double-Lip Contact Seals: Superior exclusion of dirt, dust, and moisture for extended lubricant life.
C3 Internal Clearance: Optimized for high-temperature operations, rapid thermal transitions, and applications requiring press fits.
EM Machined Brass Cage: High strength and rigidity, ideal for applications involving high vibration, frequent stop/starts, or extreme rotational speeds.
High Load Capacity (63 Series): Robust design suitable for heavy radial and moderate axial loads.
Precision NTN Manufacturing: Ensures low friction operation and maximum energy efficiency.
