Members press release

Wittmann, Germany - IFR-Partner

New linear robots of the models W821 and W808 launched

June 2012

Increased payload, reach and value from WITTMANN Group's new W821 robot

The WITTMANN Group has launched a new and improved version of its popular W821 linear robot. The new features on the new robot come at no extra charge and the new models are available now from the WITTMANN Group worldwide.

The WITTMANN Group leads the field in its automation solutions for plastics injection molders worldwide. Martin Stammhammer, International Sales Manager Robots and Automation, says that "the time is now right for many molders to upgrade their equipment and have the capability to quote for more jobs. With the new W821 we wanted to give our customers some extra performance and enhanced features but at no added cost. I am delighted to say that the W821 has exceeded my expectations in what it delivers."Robot W821

The total payload of the new W821 is now increased to 12 kg weight from 10 kg for models with vertical strokes of 1,000 mm. W821 models with longer vertical strokes will continue to carry a 10 kg payload. Another addition to this model type is the increase of the vertical stroke up to 1,400 mm.

The Z-axis of the new W821 is available in various lengths with standard strokes of 2,000 and 2,500 mm, and with extensions of 500 mm up to 4,000 mm. The upgraded W821 can be also equipped with different rotational servo axes. The standard control for the robot remains WITTMANN's R8.2 unit. The R8.2 control has numerous real time features which are being enhanced and updated by the Vienna-based group on an ongoing basis.

Martin Stammhammer notes that "although everything depends on particular applications, we are recommending the use of the W821 robot on molding machines of up to 400 t of clamping force. Because of their current market situation, many European and American molders are tending to higher payload applications even on smaller tonnage machines. The make-or-break factor now depends even less on the weight of the molded parts, but more on the increasing complexity of end-of-arm tooling increasing the gripper weight."
This situation applies less to Asian countries - where applications still tend to be pick-and-place. For these markets WITTMANN's W821 increased payload and stroke can be ideally used either for mounting on slightly larger sized molding machines with a maximum reach of 780 mm.

The W821 remains one of the WITTMANN Group's most versatile robots. It is the smallest WITTMANN robot model with moveable kick stroke design. The W821 redesign helped it score some 20% increase in sales over its predecessor model, the W721.In common with all WITTMANN Group robots, the newly launched W821 comes with a small footprint; equipped with an integrated control cabinet, thus saving valuable production space.

The W821 is offered at a very competitive price and can be configured by the user in many ways: The options range from servo driven rotational motions as well as extensive I/O extensions. The W821 design also offers unlimited flexibility and expandability for current and future applications. This is one of the reasons why the robot belongs to the "universal" created range at the WITTMANN Group.

The new WITTMANN W808: A smaller frame that packs more punch

Hot on the heels of the WITTMANN Group's new W821 robot comes the launch of its high performing little brother, the W808 servo robot.

The W808 represents a significant upgrade over the previous W801 version and the new model is now available from the WITTMANN Group worldwide. The W808 includes an integrated control, a smaller overall footprint, and a longer Z-stroke (up to 2,000 mm), all achieved at the same price.

Martin Stammhammer, International Sales Manager Robots and Automation, says that "our new W808 robot packs even more value into a completely redesigned mechanical structure. The W808 is now much closer to the design of our bestselling W818." Stammhammer recalls that "the W801 was the first such small servo robot onto the plastics processing market and the new W808 is now in fact an ideal partner for the new W818 and W821; able to carry out fast cycling operations on smaller sized parts."

W 808The W808 can handle a maximum payload of 3 kg and is designed for optimum uses on injection molding machines of up to 150 t clamping force.

The W808 is particularly suited to shorter molding cycle times for such machines and has highly dynamic servo drives for all three axes. It is equipped with a fixed kick-stroke design with a reach of 600 mm. The W808 horizontal stroke is available in either 1,250, 1,500 or 2,000 mm length and the vertical strokes come in either 600, 800 or 1,000 mm length. The W808 can also be retrofitted with additional vacuum and gripper circuits.

Stammhammer notes that "more and more molders are turning to automation - even of smaller parts - in order to protect quality and to increase production efficiency. The W808 is set for a key role in helping these plastics processors engage with both those issues, effectively - and at speed."

The W808 is the second new WITTMANN robot launch on the market within a couple of weeks with more new products expected from the company over the coming months. These new models are playing their part in increasing the WITTMANN Group's leadership in the automation of the plastics processing industries worldwide.