The KMT 4 Lock Nut 20X40X18 by SKF is a precision-engineered locking component designed for secure axial positioning of bearings on shafts. Manufactured by SKF, a leader in bearing technology, this lock nut features a robust design suitable for various industrial applications. With a bore diameter of 20 mm, an outer diameter of 40 mm, and a width of 18 mm, it is tailored to fit seamlessly into your machinery, ensuring optimal performance and reliability. Ideal for use in heavy machinery and industrial equipment, the SKF KMT 4 Lock Nut is a critical component for maintaining the integrity of bearing assemblies.
Technical specifications
| Specification | Value |
|---|---|
| Bore diameter (d) | 20 mm |
| Outer diameter (D) | 40 mm |
| Width (W) | 18 mm |
| Weight | 0.1 kg |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| ISO / cross-reference equivalent code | KMT 4 |
Technical advantages
The SKF KMT 4 Lock Nut offers several technical advantages, making it an essential component for various industrial applications.
- Engineered with chrome steel 100Cr6, providing excellent wear resistance and strength.
- Standard P0 / ABEC-1 precision class ensures consistent performance in demanding environments.
- Compact dimensions (20x40x18 mm) facilitate integration into tight spaces without compromising performance.
- Lightweight design at 0.1 kg, reducing overall system weight and improving machine efficiency.
- Compatible with a wide range of bearing assemblies, enhancing versatility in application.
Typical applications
The SKF KMT 4 Lock Nut is suitable for a variety of industries and machinery types, providing secure axial locking for precision components.
- Industrial machinery (gearboxes, conveyor systems)
- Automotive industry (transmission systems, differential assemblies)
- Aerospace engineering (turbine engines, landing gear systems)
- Marine equipment (propulsion systems, steering mechanisms)
- Renewable energy (wind turbines, solar tracking systems)
Availability and ordering
Eurobearing.eu, a specialized B2B supplier, offers the SKF KMT 4 Lock Nut with fast availability. For businesses interested in bulk quantities, quotations are available upon request. Enhance your machine’s reliability by adding the KMT4-SKF to your cart now or request a quotation for customized orders.

