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Self-lube bearings bring smooth motion to vf/f/s machines

A special polymer injection-molded with dry lubricants blended in is at the heart of the self-lubricating bearings used on these machines.

Pw 7864 Oan Matrix Mach

Matrix Packaging Machinery, a manufacturer of vertical form/fill/seal machines for products ranging from green beans to candy to detergent, uses DryLin® linear bearings from igus on its G Series machines. That includes the Matrix Proteus, Mercury, and Ares models.

According to Matrix president Marcel Willden, the G Series machines operate at speeds to 65 cycles/min. They also operate in some pretty abusive environments. That’s what led to the use of DryLin bearings, which Willden describes as a low-cost, maintenance-free alternative to other solutions Matrix has tried, including oil-impregnated bearings or metal ball bearings.

In a typical Matrix G Series bagging machine, there might be 10 igus bearings deployed. They’re used on a round shaft and are designed to minimize friction as the shaft reciprocates back and forth in its linear path. The reason the igus bearings are self-lubricating is because the material that comes in contact with the reciprocating shaft is a special polymer that is injection-molded with dry lubricants blended in.

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