By using FB conveyor chain with welded pins and bushes you may be able to reduce the chain size selected. For example: FV250A160 could be replaced by FV180A160. This chain would be 40% lighter and take up far less space. Alternatively if you have a problem application then using a welded pin and bush conveyor chain would increase the life of your conveyor chain. How do we do that?

All materials used in FB conveyor chain have been specially selected with their weldability in mind. This was achieved with the considerable help of leading Scandinavian steel producers and welding specialists from the University of Lappeenranta. By not only selecting the correct material but by also using automatic welding machines we produce high quality, reliable and consistent results. These machines give us the ability to keep the welding process, the welding temperature and energy usage under tight control. Each size and type of conveyor chain has its own welding parameters preloaded into these machines which minimises the likelihood of human error. Due to our highly developed welding technology we are able to keep the heat affected zone to an absolute minimum which results in a finished conveyor chain that will stand the test of time.

In addition to the welding techniques employed we carefully protect the ends of our pins and bushes from hardening thereby improving the weldability of our conveyor chain, conveyor chain pins and conveyor chain bushes. To see more about our induction hardening of conveyor chain pins and bushes why not read our article.

FB conveyor chains with welded pins and bushes not only have high durability against shock loads but they also have tensile strengths that are 30% higher than ISO Standard conveyor chains commonly found in the marketplace.

For example: Breaking load of FB M315-conveyor chain

ISO Standard

FB Round riveted pin

FB Welded pin only

FB Welded pin and bush

315 kN

320-350 kN

380-410 kN

440-470 kN

In 2004 following considerable research, development and testing, FB changed the design of the welded pin used on our larger tensile strength conveyor chains. This means that those conveyor chains above M160, FV140 and A12,5 now have round ends without locating shoulders. This positive step has produced a construction that has the following benefits:-

Improved the welding connection
lighter presetting of the side plates
Further improved the breaking load
Further improved fatigue strength endurance

For example: The force needed to break the rivet / weld of FB M315-conveyor chain

ISO Standard

FB Round riveted pin

Welded pin
with flat surfaces

Welded - new pin construction

Not specified

Abt. 12.000 kg

abt. 15.000 kg

abt. 17.000 kg