The Lock Nut KM24 – 120X155X20 from CRF is a precision-engineered bearing accessory designed to secure bearings onto shafts effectively. With an outer diameter of 155 mm, a bore diameter of 120 mm, and a width of 20 mm, this robust component ensures reliable locking performance in a variety of industrial settings. Typically used in conjunction with bearings in heavy machinery and manufacturing equipment, the KM24-ECO lock nut is an essential component for maintaining the stability and alignment of rotating parts.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 120 mm |
| Outer diameter (D) | 155 mm |
| Width (W) | 20 mm |
| Weight | 1.3 kg |
| Basic dynamic load rating (C) | 95 kN |
| Basic static load rating (C0) | 120 kN |
| Limiting speed | 3,600 rpm |
| Reference speed | 2,800 rpm |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
Technical advantages
The Lock Nut KM24 – 120X155X20 offers several distinct technical benefits, making it an invaluable component in mechanical assemblies:
- Constructed from heat-treated 100Cr6 chrome steel, ensuring rolling-contact fatigue life of over 107 cycles.
- Standard P0 precision class, suitable for general-purpose applications with moderate precision requirements.
- Capable of handling basic dynamic loads up to 95 kN, supporting robust machinery operations.
- Designed to operate efficiently at speeds up to 3,600 rpm, suitable for high-speed applications.
- Standard CN radial clearance allows for assemblies without preload, simplifying installation processes.
Typical applications
The KM24-ECO lock nut is tailored for high-demand environments, finding its place in a variety of sectors and machinery:
- Automotive manufacturing (axle assemblies, drive shafts)
- Heavy-duty construction equipment (excavators, loaders)
- Textile machinery (spinning machines, weaving looms)
- Mining equipment (conveyor systems, ore crushers)
- Wind turbines (rotor assemblies, gearbox mounts)
Availability and ordering
As a specialized B2B supplier, Eurobearing.eu offers the Lock Nut KM24 – 120X155X20 with fast availability. For bulk orders, requests for quotations can be made directly through our platform. Add the KM24-ECO to your cart today or contact us to discuss your specific requirements.

