This listing features a genuine Fafnir LS-100K Insert Bearing Locking Collar. This new old stock (NOS) industrial component is designed for a 1 inch (1") shaft, providing secure positioning for insert bearings and other rotating elements. The Fafnir LS-100K collar is an essential part for various power transmission, machinery, and equipment applications, ensuring reliable operation. It is commonly used as a shaft collar or bearing accessory. This Fafnir LS-100K locking collar replaces or interchanges with part numbers S1100K, 120821, 192355, and C-100-S. This Item May Interchange With The Following: S1100K 120821 192355 C-100-S