DE EN

Engineering Reports Graf

Testimonials, field reports & innovations

ERG 001 - Optimization of the production plant with our tube winders

With our classic, developed for the tube winding Industry, the HEVALOID endless tube winding belt consisting of endless woven polyester yarns and the highest rubber quality, we convince immediately in terms of flexural flexibility and ease of assembly. Only in the course of the conversion to our Hevaloid 568 TW blue comes the full signification to light: - easier and faster installation of our tube winding belts- increased life time up to 65% due to highest abrasion resistance- maximizing precision in the tube winding process […]
PDF

ERG 002 - Optimization folder gluer machine Bahmüller Jetbox 1700

Due to our 80 years of experience, especially in the field of the paper processing industry, we are well acquainted with the application and the resulting problems. We have developed our high-quality natural rubber over decades with our proprietary recipe and have learned to optimally vulcanize the consistently fresh rubber quality. In order to avoid traces of abrasion we recommend our approved Hevaloid ECG 06 natural rubber white.The result:A powerful, longlife feeder belt without signs of abrasion thanks to the best quality workmanship! […]
PDF

ERG 003 - Power transmission engineering for Hi-Fi audio equipment (record players)

The force/length measurement of the last original belt already in use on our "Zwick" test system gave us the information about the resulting preload and resonance. Combined with today's expansion forces which absorb much more power, results in a 3.8% longer flat belt identical width mass. The grinding of a slightly changed belt thickness attains the tonal subtlety of the musical experts. The result surprises even the experts: I have tested the belt in the endurance test all week and I am pleased to announce that it outperforms our highest demands. […]
PDF

ERG 004 - Technical design high performance round belts RONDLAST®

On the market in the current generation of the high-performance sorting system, the manufacturer only uses the specifically designed round belts from Dipl. Ing. Werner Graf AG. The requirements of the enormous bending changes, the strongly changing tensile forces and the high operational reliability - to the supposed C-part - were solved by Dipl. Ing. Werner Graf AG together with the customer's design team, by providing a previously unattainable quality of high-performance round belts was developed. […]
PDF

ERG 005 - Optimization conveyor stacker belt of the Neopost / Quadient IS-6000

Equipped with the storage unit, we’re walking in the workshop of the Dipl. Ing. Werner Graf AG and have analyzed the factors influencing the early loss of the belt and located them. Several guide ribs in an elastic belt provoke an increased source of interference because the positive guidance counteracts the idea of the elasticity of the belt. In order to prevent this from happening with the drive, Dipl. Ing. Werner Graf AG has developed an alternative belt, optimized strength properties and at the same time reduced the number of guide bars to the optimum of one rib. For several months, the developed belt has been running maintenance and trouble-free at the equipment of the end user. The customer has already converted all other mainly units to the solution of Dipl. Ing. Werner Graf AG. […]
PDF

ERG 006 - Development of décolletage - endless-spindle drive belts

The most common cause of failure due to the oil environment and load changes on the previous flat belt drives is the adhesive and thus the connection point of the flat belts. This resolves completely uncontrolled after shortest time. All rubber grades commonly used on the market are more or less sensitive to the drilling oil emulsions used in the turning process. A new rubber quality for the décolletage industry, consisting of NBR components, was found. Combined with our unique fabric impression and the highest-quality tension member arrangement, this latest generation of flat belts exceeds the very high quality standards. […]
PDF

ERG 007 - Caterpillar belts for pipes and profiles - retreaded

The supporting element to be coated, a poly-V belt, is subject to far less wear in the present production process than our high quality endless coating. Now, in coordination and well planned trials, the poly-V belt can be reused multiple times as the worn coating is abraded and new vulcanized. The resulting and proven customer savings achieving to several thousand Euros per year. […]
PDF

ERG 008 - Engineering wire feeder belt with rhombic structure

A conventional haul-off belt is usually designed and optimized based on the diameter, cross sections and the necessary withdrawal force. The variable component "cross section" already requires the highest coefficient of friction in the processing material, the different cross sections the lowest possible shore hardness. The rubber quality must support the required flexibility, the design of the surface as few as possible mechanical processing steps bring with it. The result: a one step cured rhombic surface structure that preserves the high coefficient of friction of the material, supports flexibility and eliminates the needs for mechanical reworking. […]
PDF

ERG 009 - Technical engineering of a friction clutch

In the customer-specific system there are several carriages which must be driven and stopped in different positions in the system. The FDA-compliant drive and driven roller is intended to lock or slow down a conical cone by means of frictional engagement. In order to be able to find a pragmatic and economic solution, the required parameters were exchanged and coordinated in the lively exchange between customer construction and technology of Dipl. Ing. Werner Graf AG. The result: a tailor-made friction lining developed in the joint ideas workshop. […]
PDF

ERG 010 - Roller conveyor drive with elastic flat belts

After successful function tests, our customer decides to replace all the spliced belts in operation as part of a system overhaul during the company holidays and therefore trust our quality. For many years now, our Crelast® elastic flat belts will convince in terms of quality and quickly amortize the cost-effectiveness in terms of replacement.We would be happy to support you in optimizing your drive application and are at any time on your dispoal. […]
PDF

ERG 011 - The assembly friendly round belt - rough, green and twisted

Together with our end customer, it is thanks to the team effort of Dipl. Ing. Werner Graf AG that we were able to bring a new generation of belts RONDLAST® W PU green rough onto the market.An individual product that our end customers in the permanent challenge for market leadership generated a projection. And the end user ensures a conceivable quick and easy to install round belt assembly and given us in our pursuit of innovation a new product line. […]
PDF