Chain 12B-1 fi=8 L=24 on one in every 3 pins

Product Description

Roller chain 12B-1 with an extended, reinforced pin of diameter fi=8 mm and length L=24 mm, fitted on every third pin. The pin is noticeably thicker than the standard pin of the 12B chain (5.72 mm), which increases its resistance to bending under high lateral loads, e.g. when fixing flights or guides.

The product is manufactured in accordance with PN 77/M-84168 / DIN 8187 (British standard “B”). It performs well in agricultural machinery conveyors, sorters, production lines and heavy component handling systems, where a standard pin would be too prone to deformation.

Product photos are for illustrative purposes only.

If you are looking for a different pin length or spacing than listed above, please contact us - as a manufacturer, we can handle special orders tailored to your specific application.

Frequently asked questions

What do the values fi=8 and L=24 mean?

“fi=8” indicates the diameter of the extended pin (8 mm - thicker than the standard 5.72 mm in the 12B chain), and “L=24” is its length in millimetres.

Where is this chain used?

In conveyors and machines where flights or other conveying accessories are fixed on the pins and the standard pin thickness would be insufficient under higher transverse loads.

Is every pin in the chain extended?

No, the extended pin fi=8 L=24 occurs on every third pin - the remaining pins have the standard construction of the 12B-1 chain.

Do standard 12B sprockets fit this chain?

Yes, the chain geometry (pitch, rollers, plates) corresponds to the 12B standard, so it works with standard sprockets of this size - the extended pins do not engage with the teeth.

Is the chain bought by the piece or by the metre?

The chain is sold by the running metre, with constant spacing of the extended pins maintained along the entire length of the section.