FAG KM18

FAG KM18 Lock Nut – M90x2

Description

The FAG KM18 is a high-precision lock nut, designed for securing bearings and other components onto a shaft. It is manufactured to strict tolerances to ensure a reliable and secure fit, preventing axial movement and maintaining bearing preload. Its simple yet effective design with four peripheral slots allows for easy tightening and adjustment using a standard hook spanner.

Specifications

• Type: Lock Nut
• Model: KM18
• Thread Size: M90x2
• Outside Diameter: 120 mm
• Width: 15 mm
• Material: Steel

Label Info

• Brand: FAG
• Model: KM18
• Part Number: 24081100

Application

Used extensively in mechanical engineering and machine building for applications requiring the secure mounting of bearings on shafts or adapter sleeves. Common in gearboxes, pumps, conveyors, and other rotating machinery.

Country of Origin

Germany

CO2 Impact

Opting for this component helps avoid the CO2 emissions associated with new production, contributing to a more sustainable industrial environment. This single item saves approximately 0.88 kg of CO2.

Availability

This item is in stock and available for immediate dispatch. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the correct locking device for a KM18 nut?

The standard corresponding locking device is an MB18 lock washer, which engages with one of the nut’s slots and a keyway in the shaft to prevent rotation.

What tool is used to tighten a KM18 lock nut?

A hook spanner (or C-spanner) is required. For the KM18, the corresponding tool designation is typically a HN 18 or a universal hook spanner suitable for a 120 mm diameter.

What is the recommended tightening procedure for this nut?

The procedure varies by application. It generally involves tightening the nut to a specific torque or angle of rotation to achieve the correct bearing internal clearance or preload, as specified by the machine or bearing manufacturer.

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Last Update: Friday, March 13, 2026