Highly shaped workpieces – particularly such consisting of comparatively smooth metals as e.g. brass – require very flexible cushions of the contact wheel used for the belt-grinding process. Even extremely soft contact wheels with a rubber surface are not appropriate.
It is for this reason that cushions made of Vulkollan®-foam are in use and generate successful results. The grades of softness of such wheels reach from abt. 20° up to abt. 55° according to Shore A. This offers the possibility to produce contact wheels for all realistic applications which can then be used to achieve the best possible result .Main fields of application are found in the area of the fittings industry.
KEMPER-KONTAKT® supplies such contact wheels in various versions:
The product series called ELAX® VSDH and ELAX® VSDN have a closed non-grooved cushion. With the series ELAX® VSDH this cushion is 35-45mm thick, depending on the wheel diameter, in the case of ELAX® VSDN this is 15-20mm thick, again depending on the wheel diameter. ELAX® VSDH is optimal for highly shaped workpieces, whilst ELAX® VSDN serves best with normal shaped ones.
Both kinds of contact wheels can be grooved either in the relation 1:1 or 1:1,5 - if higher material removal is required.
Contact wheels series Ventiflex® H and series Ventiflex® N are covered with PU-foam flaps. These wheels are even more soft and flexible than wheels series ELAX® VSDH and ELAX® VSDN and offer a much cooler abrasive process. They are applicable for extremely shaped workpieces and are used in combination with grinding belts of “J”-characteristic.
In respect of the cushion hardness a variety of abt. 25° up to 45° Shore A is available. Particular requirements can be met by use of PU-flaps and normal foam-flaps alternating with each other: series Ventiflex® HH.
KEMPER-KONTAKT® is a leading supplier of tools for surface treatment, even other than contact wheels. Should you need more information, contact us.