SKF Lock ring MB 56

Overview

This MB 56 lock washer is engineered to secure KM KML and HM lock nuts on shafts or adapter sleeves preventing unintentional loosening during operation. Designed for use with a keyway it ensures stable retention by engaging the shaft or adapter sleeve thread. The washer locks the nut in position through tabs bent into the nut’s slots offering reliable fastening. Each installation requires a new washer to maintain performance integrity.

Features

• Tab locking mechanism engages nut slots for secure fastening under dynamic conditions
• Keyway compatibility provides positive engagement to resist loosening from vibration
• Simple installation process reduces downtime and minimises risk of incorrect assembly
• Requires replacement at each installation ensuring consistent and reliable locking function
• Suitable for KM
• KML
• and HM nuts supporting a range of shaft configurations

Application & Usage

• Used with adapter sleeves requiring secure nut retention
• Ideal for mounting rolling bearings on precision shafts
• Compatible with maintenance routines involving frequent nut replacement