SKF KM 31 locknut 155 x 200 x 25 mm M155x3

Supplier number: SKF KM 31 | EAN 7316577011299

Recommended Retail Price €358.04

177.20 tax incl.

€146.45 excl. VAT (incl. all environmental contributions)

On stock - immediately available | we have 4 products in stock.

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KM 31 lock nut for secure shaft positioning

Practical benefits

Precise and stable locating: You securely locate and preload bearings on shafts, ensuring smooth rotational performance and consistent alignment across your machinery.
Positive vibration proof locking: The perimeter slots engage with matching lock washers so you reliably prevent accidental loosening during continuous high-vibration operation.
Quick mounting and reusability: You easily fit the component using a standard hook spanner and can reuse it safely when paired with a fresh washer.

In a nutshell

The right choise for

With the Skf km 31 lock nut, you locate and secure bearings on shafts and adapter sleeves with dependable precision. Featuring an M155X3 thread, a 200 mm outside diameter, and a 25 mm width, it provides firm axial positioning for heavy-duty bearing arrangements. The four perimeter slots engage seamlessly with an mb 31 lock washer and suit standard hook spanners, reliably preventing vibration-induced loosening during continuous operation. This ensures smooth rotational stability and reliable performance for your machinery.

Product information FAQ

€177.20

In stock - tax incl.

Key features according to our expert

Outer diameter: 200 mm
Width: 25 mm
Thread designation: M155 x 3

Product description

KM and KML lock nuts are used to locate bearings onto a shaft. They have metric threads and four equally spaced slots located around their circumference to accommodate a spanner. They should be locked by a lock washer to prevent unintentional loosening. KM and KML lock nuts can be reused, provided they are not damaged.

Simple, stable and reliable fastening element
Easy to install and remove
Reusable with a new lock washer
Available for thread M 10x0.75 to M 200x3 (sizes 0 to 40)

Documents

⤓ Technical data sheet PDF

All Features

Outer diameter: 200 mm
Width: 25 mm
Thread designation: M155 x 3
Outside diameter: 200
Bore diameter: 155
Associated mounting tool: TMFN 30-40
Nut for hydraulic mounting: No
Locking device: Lock washer

Brand SKF
01230618
EAN 7316577011299
Supplier number SKF KM 31

Frequently asked questions about this product

Answered by specialists

What is the SKF KM 31 lock nut used for?: It is used to locate and secure bearings axially onto a cylindrical shaft or adapter sleeve.
What are the thread size and dimensions of this lock nut?: It features an M155x3 metric thread, an outside diameter of 200 mm, and a width of 25 mm.
How do you secure the SKF KM 31 lock nut on the shaft?: You lock it in place using a matching MB 31 (or MB 31 A) lock washer engaging one of its outer slots.
Is the SKF KM 31 lock nut reusable?: Yes, you can reuse the nut if it is undamaged. Always fit a new lock washer when reinstalling.
Which tool is required for installation?: It is mounted using a suitable hook spanner or impact spanner, such as the SKF TMFN 30-40.