Demag’s LWS 450 F+ PUR wheel adds 30% travel speed to the LRS range

Where the gain comes from

The new wheel pairs a heavy cast core with a newly developed polyurethane drum. Demag attributes the higher figures to changes in both material composition and geometry, and says extended test-rig runs at its own facility confirmed the capacity and durability. On aluminium rails the wheel is described as quiet and rail-friendly, a point that matters where travel units run at speed over long distances in occupied production halls. It can also be used on steel rails and on concrete floors.

Four sizes

The range now covers four sizes in two designs. The LRS 200 (200 mm diameter) carries 1,200 kg on a minimum rail width of 70 mm; the LRS 250 carries 1,700 kg on 80 mm; the LRS 350 F carries 3,000 kg on 110 mm; and the new LRS 450 F+ carries 4,650 kg on a minimum rail width of 130 mm. The first three are rated for 200 m/min, while the 450 F+ reaches 260 m/min. Demag notes that the quoted load capacities apply at up to 100 m/min.

Mounting differs by size. The 200, 250 and 350 are offered in a nodular cast iron block housing with five machined connection faces; for the 450 a flange bearing is available as an alternative for attachment to a metal structure. Both variants can be fitted and removed without special tools, and a zinc flake coating provides the surface protection.

The standing-load argument

The most concrete claim Demag makes concerns behaviour under a stationary load. Conventional Hydropur drum wheels, it says, can lose up to half their load capacity after as little as two hours parked under load. The new PUR wheel is stated to remain fully load-bearing after longer periods under high load.

The distinction matters in installations where travel units spend long periods parked with a load on the hook — automated stores, transfer lines and any process with a buffer position. For plant designers that translates into fewer planning restrictions — no need to size around a derated wheel or to plan travel units out of a loaded parking position — and, Demag argues, better availability of the installation as a whole. The wheel system was shown at LogiMAT 2026.

Source: Demag — Photos: Demag