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Locknuts are used to locate bearings and other components onto a shaft or adapter sleeve. They are also used for mounting bearings on tapered shaft seats and dismounting bearings from withdrawal sleeves. Locknuts have to be secured to prevent unintentional loosening. This is done, either by a locking device that engages a key way in the shaft or key slot in the adapter sleeve, or by a locking mechanism integrated in the nut. Locknuts with an integrated locking mechanism reduce the cost of the shaft as no key way is required. Installation is also quicker and easier because no separate locking device is necessary. However, the loosening torque of these locknuts requires more attention. The product codes for locknuts start with HM or KM. Locknuts of types KM, KML or HM, HML, and HMLL have four grooves on their outer diameter. By contrast, the HM 30.. and HM 31.. ranges have eight grooves on their outer diameter and eight thread bores for securing a locking clip. Different suffixes (letters) distinguish the various locknuts within the ranges. A distinction is made between H and HS designs. H = Locknuts with the suffix H have additional thread bores right through them. This makes it possible to mount them with additional screws. HS = Locknuts with the suffix HS have additional thread bores right through them and come with the relevant mounting screws. The standard locknut and washer is replaced by a KMFE, washer less nut or the standard locknut HM30 is replaced by HME nut with a recessed outside diameter.
Locknuts Manufacturer | Bearing Lock Nuts | KT King Tiger

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