-22%
Benefits:
- Free of iron, sulphur and chlorine
- Short cutting times
- Minimal burr formation
- Low thermal load
Kronenflex® Tub
Due to climatic influences in the first weeks after production, cutting discs usually lose significant performance. In order for you to be able to appreciate all benefits of our newly developed product, it comes in the airtight Kronenflex® tub.
In comparison with carton packaging the discs stay fresh much longer and gain up to 40% more performance.
Klingspor Kronenflex® cutting-off wheels with a disc thickness of 0.8 to 1 mm are very thin cutting-off wheels with very short cutting times and minimal burr formation.
These cutting-off wheels develop their full power when working on thin-walled materials and are known for their precise, accurate and fast cuts at lowest thermal loads. Due to the cutting-off wheels‘ excellent cutting properties the weight of the machine itself provides suitable grinding pressure.
Klingspor Kronenflex® cutting-off wheels of the 0.8 to 1 mm class are known for their high level of safety, efficiency and productivity.
Make an Informed Choice
Symbols legend
1. EAN-Code (EAN-13)
2. Safety pictograms
3. Max. operating speed
4. Klingspor Cat. No.
5. Specification of design, grade and bond according to EN 12413
6. Dimensions in mm and inches
7. Applications (see colour coding system)
8. Information about the manufacturer
9. Operating restrictions
10. Safety standard (oSa / EN 12413)
11. Max. RPM
12. Safety pictograms
13. Product group / type
14. Klingspor brand Kronenflex®
Quality classes
Kronenflex® cutting-off wheels and grinding discs come in three performance classes with six colour codes for a quick overview of the most important material applications.
1. Label and cover sheet
The label includes all of the important information on the product, manufacturer and information on the proper use of the grinding tool
2. Mixture
The grit: Today all grit types are only produced synthetically. Only grit produced synthetically can ensure continuously high wear and cutting disc quality.
Resins and fillers: Additional, important components for cutting and grinding discs are resins, (in liquid and dry form), and fillers. These components are key in determining the disc properties, such as stability, stock removal rate, shear strength and can be adjusted to meet the needs of the specific application .
3. Metal ring
Provides information on the production period of the disc and protects the machine spindle.
4. Glass fibre
Glass fibre is a reinforcing layer to ensure stability and increases the safety of the cutting-off wheel. The number and strength of the glass fibre layers is dependent upon disc type and application. The higher the potential lateral load on a cutting-off disc (it is greater during free cutting than during stationary cutting), the more glass fibre that the cutting disc must contain, or the contained glass fibre must be more stable. Particularly thin material is used for thin cutting discs (0.8 mm to 1.0 mm), to, despite of the thin discs, ensure that a large grit ratio is achieved between the layers. Grinding discs are constructed with at least 3 glass fibre layers.
Safety and storage
| Quarter | |
|---|---|
| V 01 | January-March |
| V 04 | April–June |
| V 07 | July–September |
| V 10 | October–December |
The shelf life of cutting-off wheels and grinding discs is primarily determined by their moisture content. Cutting-off wheels and grinding discs that are subjected to increased humidity after they were manufactured loose their original service life. Proper storage ensures a consistent long service life. Cutting-off wheels and grinding discs that are subjected to water or steam are a safety risk. The user is obligated to operate the product properly. This also applies for legal reason, also as regards the expiry date. Principally the following applies: cutting-off wheels and grinding discs may not be used past the expiry date!
Working safely ...
... by being careful and recognising risks
Please avoid the risks listed below when working with cutting-off wheels and grinding discs.
- contact with rotating abrasive discs
- abrasive disc breakage
- grinding dust and debris
- vibration
- noise
... through personal protective gear
Goggles, gloves, ear muffs and dust masks must be worn. When working on hard grinding applications additional protective gear is required, such as face protection, leather aprons and safety boots.
... with protective machine guards
Machine guards are supplied with the grinding machine and may not be changed or removed. When using cup grinding wheels the outer surface must be completely enclosed. In addition, cup grinding wheels may only be used in combination with an adjustable wheel guard, to balance the wear on the disc and to keep the exposure of the disc at a minimum.
... through visual inspection and performance of checks prior to mounting
Ensure the disc RPM matches the machine RPM setting and avoid exceeding the maximum admissible operating speed. Carefully check the cutting-off wheel and grinding disc for damage. If the cutting-off wheel or grinding disc is damaged, do not use the damaged product. Our cutting-off wheels and grinding discs are marked with the corresponding safety pictograms.
... through proper use
Ensure that the respective disc is being used properly. Avoid damage to the mounting bore or to the disc through jerks, excessive force, or falls. Ensure that the disc is properly and securely mounted and use the correct mounting flange. Prior to starting work, the abrasive disc should run at operating speed for at least 30 seconds. Please observe the FEPA safety regulations and the European Standard 12413.
The peripheral speed and grinding pressure are important parameters for achieving optimal cutting-off and grinding disc results.
The optimal speed
Too low
If the RPM of the machine is too low, the cutting-off wheel and grinding disc tend to “jump”, and the disc edges wear down unevenly. Particularly with thin material cross sections, such as cutting tin or wire, this causes the grit to be separated from the bond and the disc wear speed is above average.
Optimal
Klingspor cutting-off wheels and grinding discs are high performance products and were developed such that best disc performance (measured according the stock removal volume to disc wear ratio) is achieved in the range right below the maximum peripheral speed. Keep the machine running at a consistently high RPM and, if needed, select a more powerful machine.
Too high
The maximum RPM and peripheral speed is printed on the label of each disc. For your own safety, please be sure not to exceed the recommended speeds when grinding.
The proper hardness
Generally, the rule of thumb when selecting the correct cutting-off wheel is: the harder the material, the softer the abrasive bond. The reason: the service life of a cutting-off wheel is dependent on whether the cutting surface of the workpieces hardens or not. Overheating results in the disc “glazing” and the cutting properties are negatively affected. In this case, the hardness of the bond should be decreased and a softer cutting-off wheel should be used
Correct application/techniques for cutting-off
Pressure may only be placed on the cutting-off wheel from a radial direction. This is the only way to avoid wobbling, buckling and disc breakage, especially when applying a high level of cutting pressure.
The workpiece that is to be cut-off should be properly affixed to the workbench to ensure that the disc does not slide off to the side. In addition, we recommend that the material is affixed as close to the cutting site as possible to ensure that it does not vibrate, flutter or slip to the side.
The correct mount...
... for better power transmission
Cutting-off wheels and grinding discs are mounted to the machine with side flanges. The flange elements are responsible for transferring power to the disc. For reasons of safety it is extremely important that defective or incorrect flanges are not used.
... and for more safety
The use of wheel flange FL 76 provides increased lateral stability and user control, specifically when using thin cutting-off wheels with a flat form and diameter of 180 mm and 230 mm.
The applicable regulations and standards must be complied with when using the wheel flange. The contact surface and diameter of the wheel flange must match. Using wheel flanges with diameters that do not match is prohibited.
Flat and depressed centre cutting-off wheels
0.8 ÷ 4 mm thickness
1. Disc flange
2. Flange nut
High-grade raw materials
The bond is perfectly matched to the grit type used and guarantees a greater level of aggressiveness as well as a longer service life.
Enhanced performance
The synthetically produced grit ensures the consistently high performance of our Kronenflex® products. Available in three different quality classes, they are exceptionally well suited for all types of applications.
Proven safety
Our cutting-off wheels have been tested according to the guidelines of the oSa directives and are guaranteed to comply with European safety standard EN 12413.
