The Polar LW 450 is a used pile lifter — sometimes referred to as a stacking lift — built by Polar Mohr in 1994 and currently located in Germany. Pile lifters are used in print finishing and paper processing environments to raise or lower stacks of cut or uncut material, positioning them at an ergonomically suitable working height so that operators can feed sheet stock into cutting machines, joggers, or other downstream equipment without manual lifting. Polar Mohr is a well-established German manufacturer closely associated with guillotine cutters and paper-handling machinery, and pile lifters of this kind are a natural complement to their cutting-room product range.
This machine is designed to lift stacks of material automatically to a working height that is convenient for the operator, allowing paper to be loaded directly into a jogger or cutting machine. It can equally be used in reverse — as a stacking aid for receiving and building up cut material after processing. A notable practical advantage is that the unit does not require floor anchoring; it is mounted on wheels, making it straightforward to reposition within a pressroom or finishing department as workflow demands.
The tub, which holds the material stack, has internal dimensions of 62 × 90 cm. The maximum stroke is 85 cm, giving a platform travel range that accommodates a wide variety of stack heights. At maximum stroke, the overall machine height reaches 150 cm, rising to 196 cm including the raised platform. The maximum load capacity is 450 kg. Lifting and lowering are controlled automatically by continuously adjustable reflex light barriers, which detect the stack surface and keep material presented at a consistent, operator-friendly height throughout the lift cycle.
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