Lock nuts

The lock nut is threaded onto the shaft or sleeve to axially secure a bearing or other component. It is a precision part: its slots allow tightening with a hook or pin wrench and then locking it with a lock washer or other device, depending on the series, to prevent it from loosening due to vibrations.

The codes indicate series and size. In KM0, KM1 and KM2 (BGL), AN 15 and AN 16 (SKF), AN44 (NTN), AN 02 (NSK) or HM3144 (Timken), the number is a size code linked to the thread, not the shaft diameter. The KM and HM series have fine-pitch metric threads and are used with adapter sleeves, and in codes with a slash, such as HM30/1000 (FAG), what follows the slash completes the size. Therefore, the data to quote is the complete code.

To choose, define the thread diameter and pitch, the series compatible with the bearing or sleeve, the type of wrench to be used for tightening, and the locking method. They are used in machine tools, pumps, fans, conveyor belts, and gearboxes, almost always together with adapter or withdrawal sleeves and the corresponding washer.

In this subcategory we work with BGL, SKF, Timken, FAG, NTN and NSK. To quote, send us via WhatsApp the complete code or the thread (diameter and pitch), the bearing or sleeve where it goes, and if you need a lock washer. If you come from another brand, send us the designation and we will indicate the equivalence.