To keep your bearings safe and secure on a keyed shaft, choose this lock nut from SKF. It's used with an MB 8 washer (237-2237) to locate, secure and pre-load rolling components so they don't slip out of alignment during high-speed processes. The versatile gadget does double duty as it also lets you mount a tapered-bore bearing on an adaptor sleeve. Thanks to four equally spaced slots around the circumference, it's a breeze to install – just grab a HN 8-9 hook spanner (204-4541)to tighten it firmly into position.

• Low 78g weight means it doesn't put excess strain on your system
• Heavy-duty 62kN axial static load-carrying capacity to handle tough industrial jobs
• Standardised M40x1.5 thread so it's widely compatible
• Compact 58mm outer diameter means it's a handy option for small setups

• Mining industry
• Hoists and pulleys

The SKF lock nut requiring a keyway (metric) has axial static load capacity of 62 KN. Mass of lock nut is 0.078 kg.

Thread M 40x1.5
Associated spanner HN 8-9
locking device MB 8

Yes. As long as you replace the washer each time and the nut itself is undamaged, you can reuse it as often as you like. This means it's a sustainable choice.