8. Warranty
Valid for the following conditions of use:
The clamping and braking elements are used properly only when they are used in full
compliance with the technical specifications. Any other use will exempt HEMA Maschinen-
und Apparateschutz GmbH from providing any other services.
Ambient temperature min 10°C and max 45°C
Pneumatic operating pressure 4 or 6 bars, tolerance: ± 5%
Dried, filtered and oil-free air (particles: Class 4, condensate: Class 4, oil content: Class 3)
The warranty is valid for 12 months following delivery; however, but not in excess of
1,000,000 (one million) clamping cycles, without braking clamping. When submitting a
warranty claim, the customer must present suitable verification of the actual number of
clampings. No warranty can be assumed for braking clampings due to indefinable factors
that affect the components.
Installation, conversion, maintenance and repairs: observe the installation instructions
and use the necessary equipment along with the original accessories. The respectively
valid safety and installation instructions must be observed during all work on the
clamping and braking elements.
Use the supplied transport lock when the component has been dismounted. All PClamps
may only be clamped when an appropriate transport lock or round rod is located inside
the clamping sleeve.
Removing, dismantling or machining the PClamp by the customer without prior consent
issued in writing by HEMA reduces the operating safety and renders the warranty void.
The clamping sleeve's interior size has been produced to an exact value at the factory. The
largest possible retention force results from the smallest radial clearance between the
clamping sleeve and round piston rod.
The design peculiar to all PClamps requires that the tolerance range between the round
piston rod and clamp lie within the thresholds defined by the application. Care must in
particular be taken that the round rod is completely free when the clamp is open.
A friction force of around 2% of the nominal retaining force and friction by the optional rod
scrapers is normal.
When exposed to fat (piston rod's lubrication condition), the clamping systems' retention
forces may in certain circumstances be considerably reduced resulting in longer braking
distances. The optional rod scrapers must be used to prevent fats or fatty accumulations of
dirt from negatively affecting performances
No NBR-incompatible media or media that facilitates corrosion
Corrosion may occur as a result of the material. Any warranty claims made on this basis
will not be recognised.
PClamp
EN
8
PClamp_EN_2020_22012020 23.01.2020 15:39 Seite 8
