Which lock nut is the SKF MB 23 designed for?

This lock washer is designed for use with the KM 23 lock nut on a shaft or adapter sleeve.

How does the SKF MB 23 lock the nut?

The inner tab engages the shaft keyway, and you bend one of the outer tabs into a slot on the lock nut.

Can a lock washer be reused?

No, SKF recommends installing a new lock washer every time the lock nut is mounted to ensure reliable locking.

SKF MB 23 lock washer for locknuts 115 x 159 mm

Supplier number: SKF MB 23 | EAN 7316577011664

Recommended Retail Price €23.53

11.60 tax incl.

€9.59 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 2 products in stock.

Ordered before 20:00 - delivered tomorrow 09/10/2026
Shipping costs €11.99 VAT included | Free shipping for orders over a total amount of 125 euros
Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Secure shaft locking with Skf

Practical benefits

Reliable lock nut retention: You prevent unintentional loosening of lock nuts by bending the outer tabs firmly into the nut slots.
Precise dimensions and fit: With a 115 mm bore and 159 mm outer diameter, you achieve accurate alignment on the shaft.
Simple and fast installation: You install the locking washer quickly as the inner tab securely engages the keyway of your shaft.

In a nutshell

The right choise for

With the Skf mb 23 lock washer, you reliably protect lock nuts such as the km 23 from vibrating loose during heavy operation. Featuring an inside diameter of 115 mm, an outside diameter of 159 mm, and a thickness of 2 mm, it ensures a precise fit on your shaft or adapter sleeve. The inner tab engages easily with the keyway on the shaft, allowing you to bend one of the outer tabs directly into a slot on the lock nut. This creates a dependable positive mechanical lock without damaging shaft threads, making it essential for bearing mounting and drive maintenance.

Product information FAQ

€11.60

In stock - tax incl.

Key features according to our expert

Inner diameter: 115 mm
Outer diameter: 159 mm

Product description

MB and MBL lock washers are locking devices, used to secure KM, KML and HM .. T lock nuts onto a shaft or adapter sleeve and prevent unintentional loosening. MB .. A is a stronger version of the MB washer. The lock washers engage a keyway in the shaft or adapter sleeve thread. They lock the nut in position when one of the washer tabs is bent into one of the slots in the outside diameter of the lock nut. A new lock washer should be used each time the corresponding lock nut is installed.

Simple, stable and reliable fastening element
Easy to install and remove
Used for KM, KML, and HM .. T lock nuts

Documents

⤓ Technical data sheet PDF

All Features

Inner diameter: 115 mm
Outer diameter: 159 mm
Outer diameter: 159
Bore diameter: 115
Locking device: Lock washer

Brand SKF
01230648
EAN 7316577011664
Supplier number SKF MB 23

Frequently asked questions about this product

Answered by specialists

Which lock nut is the SKF MB 23 designed for?: This lock washer is designed for use with the KM 23 lock nut on a shaft or adapter sleeve.
What are the dimensions of this lock washer?: The washer has an inside diameter of 115 mm, an outside diameter of 159 mm, and a thickness of 2 mm.
How does the SKF MB 23 lock the nut?: The inner tab engages the shaft keyway, and you bend one of the outer tabs into a slot on the lock nut.
Can a lock washer be reused?: No, SKF recommends installing a new lock washer every time the lock nut is mounted to ensure reliable locking.