The new RWA 1000 elmo “electric motion” die changing cart transports press and punching dies weighing up to 1,000 kg. According to ROEMHELD, what makes it unique is that both the drive system and the lifting function are fully electric. A battery-powered motor moves the cart at speeds of up to 4 km/h, whilst the double scissor lift raises the load electro-hydraulically to table heights between 620 and 1,485 mm. Dies can thus be picked up without physical strain, brought to the insertion height of the press or punch press, and docked there precisely.

It is operated via a multifunctional drive handlebar featuring a continuously variable speed control, a safety bump switch, a horn and an emergency stop. The stainless steel roller table accommodates dies measuring up to 1,000 x 700 mm; with a lateral overhang, dimensions of up to 1,000 x 900 mm are even possible. Adjustable locking bars and side rails secure the dies against slipping and falling, whilst a safety docking rail ensures the exact insertion height. The die changing table is available in various designs, including versions with lowerable rollers or a swivelling bridge.

ROEMHELD offers an insight into its development work with a new push-pull platform that facilitates die changeover when using industrial trucks. It is mounted on a new or existing electric walkie pallet truck or forklift, has its own electric drive and operates independently of the vehicle.

A push-pull chain pulls the die onto the platform and pushes it into the press. The control unit is integrated into the platform; optionally, it can be integrated into the lifting equipment. The first model, the RWA 1600 elmo, is designed for tools weighing up to 1.6 t; larger versions for up to 2 and 4 t are planned.

Until now, different clamping edge heights have required different clamping elements or time-consuming shimming. The new ‘Flex-type’ hollow piston clamping device, with a stroke of 7 mm, can instead be adjusted continuously over a range of 30 mm in millimetre increments by turning a knurled nut. The set clamping range is indicated visually via a scale and can be checked at a glance.

This enables users to reduce the number of variants they need to stock, shorten set-up times and increase process reliability.

The clamping force is available in either 60 or 104 kN, with versions offered for 245 and 400 bar. No comparable product is currently available on the market.

The Flexline-R quick-clamping system presented here automatically clamps dies of varying sizes onto the press ram using hollow-piston cylinders. The version revised in 2025 features a highly robust, welded stainless-steel tension-and-shear chain designed for heavy loads, reinforced stops, additional monitoring options and an improved emergency control system.

This makes the system particularly suitable for automated press lines with frequent die changes.

The range has also recently been expanded to include double-acting arch clamping elements with an integrated locking pin, available in six versions. The clamping and release pressure is 200 bar in each case; the clamping force varies between 50 and 450 kN depending on the model, whilst the maximum permissible process force is 620 kN. The arched clamping bolt rests on the straight clamping edge; its horizontally acting force is redirected and acts almost vertically on the clamping surface.

A mechanical locking mechanism holds the clamping bolt in the clamping position even in the event of a pressure drop and secures the upper die against falling. Optionally, a laterally mounted position control system signals the release and clamping positions, as well as any overshoot of the clamping position.

The components are temperature-resistant up to 100 °C when fitted with a position control; without this control, they are temperature-resistant up to 160 °C as standard, and on request even up to 250 °C.

In addition, ROEMHELD is showcasing its R-MAG electro-permanent magnetic clamping system, which clamps dies of various sizes and geometries fully automatically and without distortion in a matter of seconds, and holds them securely even in the event of a power cut.

According to ROEMHELD, it is currently the only system on the market that offers both a clamping force display for greater process reliability and interchangeable magnetic poles. This simplifies maintenance and reduces downtime.