Which lock nuts is this socket suitable for?

It is designed for KM 1 lock nuts and lock nuts with an outer diameter of 22 mm.

What drive size is required for the TMFS 1?

This socket features a 3/8" square drive for use with a ratchet or torque wrench.

What is an axial lock nut socket used for?

It is used to mount and dismount bearings on shafts and sleeves safely without damaging the nut.

What are the dimensions of this socket?

The socket has an outer diameter of 28 mm, a total height of 56 mm, and an effective height of 45 mm.

What is the advantage over a hook spanner?

It requires less radial space around the bearing arrangement and allows precise tightening with a torque wrench.

SKF TMFS 1 axial locknut 3/8" with effective height 45mm outside diameters 22-28mm

Supplier number: SKF TMFS 1 | EAN 7316570369335

100.20 tax incl.

€82.81 excl. VAT (incl. all environmental contributions)

On order: delivered from 22/10/2026

Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Precise bearing mounting and removal

Practical benefits

Controlled fastening with Skf: You mount and dismount bearings safely using the TMFS 1 on tapered journals and sleeves.
Fits into confined spaces: The compact axial socket design requires far less radial clearance than conventional hook spanners.
Ready for torque wrenches: A standard 3/8" square drive lets you connect torque wrenches for accurate and damage-free tightening.

In a nutshell

The right choise for

With the Skf tmfs 1 axial lock nut socket, you mount and dismount bearings on shafts or adapter sleeves with complete control and precision. While traditional hook spanners often lack radial clearance in tight spaces, this compact socket with an outer diameter of 28 mm and an effective height of 45 mm easily reaches confined or recessed bearing arrangements. You prevent costly damage to shafts and km 1 lock nuts with a 22 mm outer diameter. Thanks to the standard 3/8" square drive, you can readily connect a ratchet or torque wrench to tighten lock nuts to the exact required torque. You carry out every machine maintenance and overhaul task quickly and reliably.

Product information FAQ

€100.20

tax incl.

Key features according to our expert

Socket size: 22 mm
Connection size: 3/8"
Connection profile: Internal square
Length: 56 mm
VDE approved: No
With safety colour code 1000V: Not applicable
Non-sparking: No
Magnetic: No

Product description

The TMFS axial lock nut sockets are used to mount bearings on tapered journals or adapter sleeves and for dismounting bearings on withdrawal sleeves. Available in 21 different sizes, they are suitable for various locknuts sizes 0 to 20.

Good alternative to hook spanners, making the use of power tools or torque wrenches possible
Allow the use of torque wrenches
The sockets are provided with a zinc flake coating to assure corrosion protection

Documents

⤓ Technical data sheet PDF

All Features

Socket size: 22 mm
Connection size: 3/8"
Connection profile: Internal square
Length: 56 mm
Vde approved: No
With safety colour code 1000v: Not applicable
Non-sparking: No
Magnetic: No
Material: Alloy engineering steel, hardened and tempered
Fits on lock nuts inside skf split pillow block housings (snl): No
Drive connection: 3/8"
Effective height: 45
Allows bearing mounting: Yes, angle method or with clearance reduction measurement
Coating: Black oxide
Height: 56
Color code: Metallic Black
Outer diameter: 28
Outer diameter lock nut: 22

Brand SKF
01901131
EAN 7316570369335
Supplier number SKF TMFS 1

Frequently asked questions about this product

Answered by specialists

Which lock nuts is this socket suitable for?: It is designed for KM 1 lock nuts and lock nuts with an outer diameter of 22 mm.
What drive size is required for the TMFS 1?: This socket features a 3/8" square drive for use with a ratchet or torque wrench.
What is an axial lock nut socket used for?: It is used to mount and dismount bearings on shafts and sleeves safely without damaging the nut.
What are the dimensions of this socket?: The socket has an outer diameter of 28 mm, a total height of 56 mm, and an effective height of 45 mm.
What is the advantage over a hook spanner?: It requires less radial space around the bearing arrangement and allows precise tightening with a torque wrench.