SKF TMFN 23-30 impact spanner

Supplier number: SKF TMFN 23-30 | EAN 7316571764986

121.95 tax incl.

€100.79 excl. VAT (incl. all environmental contributions)

On order: delivered from 15/10/2026

Delivery by DHL

↓ Documents (1) ✆ Talk to a specialist

Heavy bearing nut tightening with Skf

Practical benefits

Efficient impact force transmission: The specialized impact face guides every hammer strike directly into the nut, allowing you to loosen or tighten securely.
Protection for shaft and nut: The purpose-built hook profile prevents accidental damage to the shaft threads and lock nuts during heavy-duty service.
Versatile lock nut coverage: You can easily service a wide range of industrial lock nuts with outer diameters from 150 to 195 mm.

In a nutshell

The right choise for

Safely tighten and loosen large lock nuts with the Skf tmfn 23-30 impact spanner. Featuring a specialized wide impact face, it transmits every hammer strike directly into the nut, allowing you to free seized or corroded nuts without slipping. The precise hook profile prevents accidental damage to shaft threads and lock nuts during heavy-duty industrial bearing maintenance. Covering outer diameters from 150 to 195 mm, this versatile tool accommodates lock nut sizes 23 to 30 (including KM, KMFE, KML, and din 1804). You achieve maximum control and reliability when servicing machinery in heavy industry and mechanical engineering.

Product information FAQ

€121.95

tax incl.

Key features according to our expert

Min. diameter: 150 mm
Max. diameter: 195 mm

Product description

The TMFN impact spanners are designed for safely tightening and loosening larger locknuts, especially after driving up a large bearing onto a tapered seating. Made of spheroidal graphite cast iron, they have a special impact surface allowing for optimum transmission of impact energy to the nut.

Minimises locknut damage
Designed to fit a number of different nut sizes
Spanners with zinc coating, corrosion resistant handle

Documents

⤓ Technical data sheet PDF

All Features

Min. diameter: 150 mm
Max. diameter: 195 mm
Handle lenght: 208
Outer diameter lock nut: 148
Handle fixation: Fixed with rubber damper
Nose height: 4.5
Minimum number of lock nut slots: 4
Nose widht: 11.5
Material handle: Steel handle with rubber grip
Allows bearing mounting: No
Material: Head: spheroidal cast iron;Handle: carbon steel
Coating: Black phosphated head with galvanished handle
Thickness: 23
Length: 319
Color code: Black metallic
Working length: 300

Brand SKF
01900315
EAN 7316571764986
Supplier number SKF TMFN 23-30

Frequently asked questions about this product

Answered by specialists

What is the SKF TMFN 23-30 impact spanner used for?: It is designed to safely tighten and loosen locknuts with an outer diameter ranging from 150 to 195 mm.
Which locknut sizes are compatible with this spanner?: It fits locknut sizes 23 to 30, including series KM, KMFE, KML, and DIN 1804 (M105 to M130).
How does this tool prevent damage to the nut?: Its wide impact face ensures optimal transmission of impact energy, helping to avoid damage to both nut and shaft.
Can it be used to drive bearings up a tapered seating?: No, this spanner is intended only for tightening and loosening locknuts, not for driving bearings onto tapered seats.