Chain 12B-1 fi=5.72 L=40.5 on one in every 3 pins

Product Description

Roller chain 12B-1 with an extended pin of standard diameter fi=5.72 mm and length L=40.5 mm, fitted on every third pin. Unlike the version with a reinforced pin fi=8, this model keeps the standard pin diameter of the 12B chain - it is only extended, which allows accessories to be fitted without increasing the load on the sprockets.

The chain is manufactured in accordance with PN 77/M-84168 / DIN 8187 (British standard “B”). Used in conveyors, sorters and transport lines where a fixing point on the pin is needed without changing the standard pin diameter.

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

How does this chain differ from the fi=8 version?

The extended pin here has the standard diameter of the 12B chain, i.e. 5.72 mm - it is not thickened as in the fi=8 variants. Only its length is extended, up to 40.5 mm.

What is this chain used for?

For conveyors in which the extended pin serves as a fixing point for flights or holders, without the need for a reinforced, thicker pin.

How often does the extended pin occur?

The extended pin fi=5.72 L=40.5 mm occurs on every third pin; the remaining links have the standard construction of the 12B-1 chain.

Does this chain fit standard 12B sprockets?

Yes, because the pin keeps the standard 12B diameter, the chain works without restriction with standard sprockets of this size.

In what form is this chain sold?

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