Operations and Safety Notes
Please mind the following notes. They will help you to ensure a safe and technically correct handling of diamond tools.
The diameter of the center hole / boring of the diamond tool must match exactly the diameter of the tool hold / tool mount of the machine in use. The arrow on the diamond tools shows the direction of rotation of the tool. Diamond tools with a possible imbalance or sidestroke / lateral run out may cause strong vibrations in use and must under no circumstances be fitted or used. The diamond tool
must always be fitted / mounted on the drive shaft but never on the threaded bar. The flanges must be free of burrs and nicks as well as rust and grinding sludge etc.
The diamond tools in particular diamond blades must not be set down hard on the work pieces. The weight of the machine is sufficient as contact pressure. The diameter of a blade has to be selected according to the depth of the cut.
Depth of cut diameter of the blade
20 mm 105, 115, 125, 150 mm
30 mm 180 mm
40 mm 230 mm
50 mm 300 mm
Diamond blades are not suitable for cutting metal, wood and plastics (unless they are offered for this application). Objects with larger cross-sections have to be cut in several operations.
The peripheral speed has to be selected according to the hardness and abrasiveness of material to be cut. The area cut time unit (cm²/min) and the tool life are conditional to the peripheral speed together with the feeding rate. If the rotation speed is too high the diamond blade will blunt, if the rotation speed is too low the blade will wear out too quickly. In general the following guidelines apply for the cutting speed:
20 – 25 m/s for homogenous and hard materials (for example quartz, corundum, porcelain, glass etc.)
25 – 40 m/s for semi hard and porous structured materials (for example diabase, granite, syenite, fireclay bricks, etc.)
30 – 50 m/s for soft and abrasive materials (for example sandstone, slate, tuff, nagelfluh, shell limestone, marble, limestone, concrete, etc.)
The maximum peripheral speed limit of 80 m/s must not be exceeded at any time. For wet cutting please note the operation and safety instructions of the manufacturer/supplier of your machine.
When using dry cutting diamond blades a break in the cutting process is required approx. every 20 seconds for about 10 seconds for the blade to cool down again. The machine and the diamond blade have to be removed from the cut kerf for this purpose. Wet cut diamond blades always require a sufficient supply of cooling liquid during the cutting process to cool the blade and to flush out abrasive grinding sludge from the cut kerf. The holes in the water fork must be in a position to enable the blade to transport the water into the cut kerf.
Dressing / Cutting Speed
For dressing and sharpening a diamond blade cut two or three times into a grind stone. If a grind stone is not available cutting into a coarse grained very soft brick or sandstone has the same effect.
Diamond blades are designed to make straight cuts only. The cutting of curves or grinding with one side of the diamond blade can lead to cracks in the blade or cause segments breaking off which can cause serious injuries to the user or people nearby.
Damaged or broken diamond tools must not be used at any time. This applies also to diamond tools which have been dropped. Damaged diamond tools and / or diamond tools which are not fitted properly and / or which haven´t been used in a correct way may cause serious injuries to people and damage machines and materials.
Protecting goggles with side protection must be worn when working with diamond tools. The use of full protection masks, hearing protectors and protective safety gloves is recommended.
The use of an appropriate dust absorbing system is recommended when cutting quartz filled materials.
Check carefully and make sure that all protection devices of the machine are fitted and functioning
before you start the machine.
Violations against these operational notes/instructions and/or any other applicable health and safety regulations result in loss of warranty / liability.
Diamond Tools & Parts GmbH
Sonnenhalde 18-20, 74677 Dörzbach
Telefon: +49 (0) 7937 802 900
Telefax: +49 (0) 7937 802 90 29