Technical tips

Graphite grades

All Meusburger graphite grades were especially developed for EDM, which guarantees a consistent quality and good machinability.

Q70

• Achievable surface quality from VDI 27 (2.2 μmRa) to VDI 24 (1.6 μmRa), depending on machine technology
• Low electrode wear
• Good surface
• Fast EDM process

Q60

• For surfaces of VDI 22 (1.26 μmRa)
• Ideal for high-quality finishing
• For highly detailed shapes
• Good surface with good material removal rate

Q40

• For surfaces of VDI 20 (1.0 μmRa)
• Complex electrodes with fine contours
• Low electrode wear with good removal rate
• For very demanding surface qualities

To ensure an optimum service life of the tool holder, we recommend regular lubrication with the high-performance grease VGM 160.

Identifying protective gloves

The performance levels achieved are shown under the icon according to DIN EN 388:2016/ISO 13997:

What is the optimal distance between the magnifying glass and the eye?

Often one tends to put magnifying glasses too close to the eye. In fact, the distance between the magnifying glass and the eye should be the same as the one between the glass and the object viewed through it.

What does ‘H1 registered’ mean?

These consumables are approved for the food processing industry. ‘H1’ specifically means that occasional, technically unavoidable contact (10 ppm) with food is permitted.

The Meusburger Speed Lap programme

The Speed Lap programme consists of pads and bars for applying diamond compounds in order to achieve high surface quality and save time.

• New compound material
• Prevents the formation of washouts and built-up edges
• Higher material removal rate compared to other methods
• Reacts less sensitively to applied pressure
• Enables uniform, scratch-free lapping
• Sturdy lapping bars

Technical information

• Preparing the lapping pads:
  Before using the lapping pads for the first time, use a fine abrasive paper or diamond foil to hone them.
• Preparing the lapping bars:
  Adjust the lapping bars to the geometry to be machined, e.g. with grinding wheels, abrasive paper, or files; round lapping bars can be held in a collet chuck for this purpose.
• Grit sizes:
  The optimum grit size is 6 μm, but coarser grit sizes are also possible. If necessary, lapping can be carried out to 3 µm.
• Lubrication:
  Dilute the diamond compound with some cutting fluid VLM 5 or polishing oil VLM 20.
• Pressure:
  Apply light pressure during 60–70% of the work step, finish for the rest of the time, i.e. work without pressure.
• Manual filing tool:
  Stroke speed: 4,000–7,000 min⁻¹
  Stroke length: 0.5–1.0 mm

When are ultrasonic systems used?

Thanks to minimum stroke with a maximum number of strokes, ultrasonic systems are perfectly suited for quick and easy removal of EDM scale.

Available custom designs:

Pin assignment: custom pin assignment possible on request

Cable length: custom lengths possible on request

If you need custom-made products or have specific questions, simply contact Meusburger for professional specialist advice.

What are fine-grinding stones used for?

Fine-grinding stones are also often called ‘Degussit stones’. They are extremely hard and have a high edge stability, so they are optimally suited for deburring and fine grinding. The grit size is between 1,000 (rough) to 3,000 (fine).

Which tolerance class is used when?

• Tolerance class 0: for setting up and inspecting final dimensions and measuring devices with high precision
• Tolerance class 1: for inspecting test dimensions of check gauges and for length measuring devices in the measuring room
• Tolerance class 2: as work and setting dimension, for inspecting dial indicators and lever dial indicators, or as gap gauge replacement

Available custom designs:

Pin assignment: custom pin assignment possible on request

If you need custom-made products or have specific questions, simply contact Meusburger for professional specialist advice.

Diamond compound with natural grit for the toughest of conditions

Natural grit is very aggressive with high cutting performance and therefore ideally suited for the machining of carbide. The diamond compound does not contain colour, because food colouring would reduce the cutting ability.

What does ‘100% duty cycle’ mean?

The duty cycle indicates a maximum permissible ‘on phase’ after which an ‘off phase’ is required in order to avoid damage to the equipment.

Thus, ‘100% duty cycle’ means that the device is suitable for permanent use, i.e. without interruption.

Active materials are high in iron or copper and can release a high number of metal ions, which leads to short curing times of the adhesive. Active materials are, for example:

• Iron
• Steel
• Copper
• Brass

Passive materials, on the other hand, are either metallic materials with a low catalytic effect or non-metallic. They can only release a few or no ions, so that the adhesive cures very slowly or not at all. Passive materials are, for example:

• Aluminium
• Chromium steel or chromated surfaces
• Oxidised surfaces
• Zinc or galvanised surfaces

Flexible shaft systems feature significantly higher torque than micro motors and air tools. Therefore, these systems are best suited for large tools like flap wheels, abrasive fabric grinders or rubber backing pads with sanding discs.

What does ‘K1 and K3 registered’ mean?

These consumables are approved for the food processing industry. ‘K1’ and ‘K3’ specifically mean that these consumables may be used in areas where the spray mist cannot reach the food processing area.

The cleaned part must be washed thoroughly before it is used in the food processing area.

High-quality neodymium magnets allow for installation without screw connection.

• Reliable expander sealing plugs in numerous sizes
• Fast and easy installation with normal machining tolerance
• Also suitable for high pressures and various media

• For very high stroke rates, limited load-handling capacity and free-of-play guiding
• Ball cages in various lengths per ball guiding bush available
• Tolerances coordinated for optimum preload and smooth running

• Small installation space enables minimum distance between the fountains
• Can be screwed into the corresponding metric thread without using a tool
• High-quality fountain from stainless steel without narrowing cross section