Chain factory Iron Machine Metalworking

Chain bending machine

The electrically driven chain bending machine from the 1950s produces chains by straightening wire (removal of deformation of the wire due to winding on the coil) and then cutting and bending it. The sounds made by this machine consist of the simultaneous noise ensemble of wire straightening, cutting, bending and connecting of the chain links.
In contrast to older chain bending machines, this machine automatically connects each U-shaped “pin” with the previously forged chain link and presses the ends together, so that an automatic chain welding machine can perform the last step.
The machine was in use in the chain factory JOTO-Werk in Fröndenberg. The machine is currently displayed in the Chain Forge Museum in Fröndenberg (Germany, North Rhein-Westphalia) and is used solely for show purposes.
The Chain Forge Museum exhibits the manual and industrial manufacturing of chains.

Sound recordist: Konrad Gutkowski/Julian Blaschke
Photographer: Konrad Gutkowski/Julian Blaschke
Video recordist: Konrad Gutkowski/Julian Blaschke


12.2 MB
1 min 9 s
2 (Stereo)
Sample rate:
Bit rate:
Bit depth:
44.1 kHz
1411 kb/s
16 bit
84 dB

Recorded on March 13, 2014
Kettenschmiedemuseum Fröndenberg
Fröndenberg, GERMANY
Creative Commons License