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Standard links are moulded from quality acetal engineering plastic offering optimum mechanical properties in materials handling.
The material offers a unique combination of properties, high tensile strength, excellent dynamic fatigue strength, unique resilience and practical impact strength with a low co-efficiency of friction. (0.15 against metals compared to 0.8 for steel/steel).
In operation Chains are quiet, rugged and virtually maintenance free (no need for lubrication) light in weight and low on energy requirements. They offer maximum hygiene advantage and good chemical resistance with minimal moisture absorption. The material exhibits excellent resistance to wear.
Recommended temperature range: -40 to +90°C
PM – Acetal copolymer with self lubricating components. Colour: White, (blue on request).
LF – Acetal copolymer with improved self-lubricating quality. Colour: Brown.
SLF – Acetal copolymer with self lubricating additives to obtain the lowest possible friction resistance.
HP – Homopolymer offering approximately 20% increase in tensile strength & hardness over standard acetal with equivalent elongation for optimum performance in more arduous applications.
PP – Polypropylene a thermoplastic material with low density and good properties when high chemical resistance is required. The material has a very high material toughness and can resist steam sterilisation. Recommended temperature range +1°C to +104°C.
In addition special grades can also be employed including glass reinforced polypropylene and polyurethane and in addition antistatic materials, but special considerations relating to application and production batches are necessary.
Standard pin material employed is from austenitic stainless steel grade AISI 304. (18/8 Cr Ni) offering a high degree of corrosion resistance and high hardness strength. Ferritics stainless steel can be offered if metal detection is necessary or indeed standard steels with electrolytic zinc plating.
To calculate chain pull for conveyors with bends use the following table.
PM600 and PM1400 chain
|Turn Angle degrees||30||45||90||180|
Multiply Tf by no. of bends in conveyor length.
Curves should be as far away from head shaft as possible.
When using 1700 chains with turnwheels, calculate as for straight conveyor and multiply result by 1.12n when n= no. of turns.