SKF MB 25 lock washer for lock nuts 125 x 170 mm

Supplier number: SKF MB 25 | EAN 7316577011671

Recommended Retail Price €46.39

22.80 tax incl.

€18.84 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 3 products in stock.

Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Reliable shaft locking with Skf

Practical benefits

Prevents accidental loosening: Bending a washer tab into the nut slot securely locks the assembly against heavy operational vibrations.
Precise engineered dimensions: The 125 mm inner diameter and 170 mm outer diameter ensure exact engagement with matching components.
Simple keyway alignment: The internal locking tab seats directly into the shaft keyway to prevent rotational slipping during installation.

In a nutshell

The right choise for

With the Skf mb 25 lock washer, you reliably secure lock nuts such as the km 25 onto shafts and adapter sleeves. Under continuous vibration and dynamic mechanical loads, it effectively prevents threaded fasteners from backing off. The internal tab aligns directly with the shaft keyway, allowing you to easily bend one of the outer tabs into the nut slot for a positive lock. Featuring an accurate 125 mm bore diameter and 170 mm outer diameter, it guarantees a precise fit for secure bearing mounting. This keeps drive systems running smoothly and eliminates unplanned downtime during maintenance and overhaul tasks.

Product information FAQ

€22.80

In stock - tax incl.

Key features according to our expert

Inner diameter: 125 mm
Outer diameter: 170 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: 125 mm
Outer diameter: 170 mm
Outside diameter: 170
Bore diameter: 125
Locking device: Lock washer

Brand SKF
01230650
EAN 7316577011671
Supplier number SKF MB 25

Frequently asked questions about this product

Answered by specialists

What is the SKF MB 25 lock washer used for?: It is used to securely lock a corresponding lock nut (such as KM 25) onto a shaft or sleeve to prevent accidental loosening.
What are the dimensions of this lock washer?: The washer has an inside diameter of 125 mm, an outside diameter of 170 mm, and a thickness of 2 mm.
How does the locking mechanism work?: The inner tab fits into the shaft keyway, and you bend one of the outer tabs into a slot on the lock nut.
Which lock nut is compatible with the SKF MB 25?: This lock washer is designed for use with a KM 25 lock nut.
Can you reuse a lock washer after removal?: No, a new lock washer must always be used whenever the lock nut is reinstalled to ensure reliable locking.