The AN 40 Precision Lock Nut is a critical securing component engineered to rigidly fasten adapter sleeves onto shafts, ensuring that spherical, self-aligning ball, or roller bearings maintain their precise axial position during operation. Manufactured from high-tensile strength carbon steel and precision-machined to exacting ISO standards, the AN 40 provides superior thread engagement (M200x3 nominal thread) and exceptional face parallelism, crucial for applications involving heavy radial and axial loads. Its robust design features strategically placed keyway slots allowing for effective torque application and secure locking via a companion locking device (such as the MB 40 lock washer), guaranteeing reliable performance and minimizing the risk of bearing creep or misalignment even under severe vibration.
Optimized for heavy industrial environments, including mining conveyors, paper mills, and large gearboxes, the AN 40 significantly contributes to the overall longevity and reliability of rotating machinery. Using genuine SKF components ensures optimal system rigidity, reducing friction and wasteful energy consumption associated with bearing misalignment. As a Senior Product Manager, we emphasize that standardizing on the AN 40 minimizes costly unplanned downtime by offering an unparalleled level of fit and finish, simplifying maintenance procedures, and providing the durable performance expected from world-class industrial securing technology.
Key Features
Precision-machined thread form (M200x3) ensures optimal thread engagement and consistent torque transmission.
High-strength carbon steel construction provides superior durability under extreme axial loads and fatigue.
Optimized for use with MB 40 lock washers to securely prevent rotational loosening due to vibration.
Standardized dimensions guarantee interchangeability with equivalent adapter sleeves (H 2340 / H 3140 series) across all major bearing manufacturers.
Crucial component for establishing and maintaining precise bearing clearance during installation on tapered shafts.
Tolerances strictly adhere to international DIN and ISO standards for industrial locking devices.
