Special tensioners

The requirements of our customers are diverse. No pool of machinery is the same as another, so the enquiries we receive are often extremely individual. We will do everything possible to meet your demands with our special models. Correct advice is absolutely vital here – it‘s what makes our components reliable.

A variety of influences

The work conditions must be known in detail in order for the best tensioning system for your machines to be determined.

A host of factors can restrict functionality, such as force effects, chain speed, chain pressure, contamination, and temperature. The use of machinery in problematic temperature ranges can often result in a high risk of malfunction or damage.

This makes it vital for you to receive the best possible advice on the correct choice of material. Please contact our application technology department. We will be glad to work with you to find a custom solution.

Spann-Box® size 2
for use at temperatures of up to 200°C

Spann-Box® size 1
for use at temperatures of up to 150°C

Spann-Box® size 30
with mechanical limit switch

Spann-Box® size 1
with return profile made of Murinit® SP in accordance with customer's requirements

Ω tension station for compensation of extensive chain lengthening

Spann-Box® size 1 with arc segment made from Original Material "S" plus+®OIL for an accumulator chain

Spann-Box® size 1 or size 2
tandem tensioner for tensioning chains with extremely large chain pitches

Size 1 tension station with roller


Murtfeldt Spannsysteme: Spann-Box® Ausführungen mit Sperrvorrichtung.

Murtfeldt Spannsysteme: Spann-Box® Ausführungen mit Sperrvorrichtung.

Murtfeldt Spannsysteme: Spann-Box® Ausführungen mit Sperrvorrichtung.

Spann-Box® designs with locking devices; they prevent the slide profile from being compressed when the direction of rotation changes, for example.


Murtfeldt Spannsysteme: Doppelspanner für Kettentriebe mit Reversierbetrieb.

The double-tensioner for chain drives with reverse operation. Thanks to the „floating“ suspension of the clamping elements, the tension is always applied just where it‘s needed: On the slack strand.