Secure your bearings tightly and safely onto shafts with this bearing lock nut and locking device from SKF. It's an ideal complement to bearings as it doesn't loosen when exposed to jolts and vibrations, enabling your application to withstand high-speed rotations without failure. The unit is made from steel material for durability and corrosion resistance. Pair this locking device with the compatible SKF lock washer (209-3900) for enhanced safety.

• Height of 4mm and width of 10mm, suitable for equipment with minimal space
• Axial load-carrying ability of 216kN for use in heavy-duty equipment
• Easy to install as neither mounting nor dismounting need complex tools

• Conveyor systems
• Automation industry

The choice depends on what kind of environment the lock will be installed in. For equipment in an environment with a lot of noise, heat and vibrations such as a factory, use a lock washer. For equipment in a home setting with minimal noise and vibrations, use a lock nut.

209-3811 (part no. KM 18) is just the locknut. The lock washer is ordered separately, 209-3900 (part no. MB 18)
The only parts we supply as kits are the adapter sleeve assemblies. E.g. if you order 209-3737 (part no. H 318) you will get the adapter sleeve, locknut KM 18 and washer MB 18 as a kit.