Mannesmann Demag ESRAX25 Serie Einbauanleitung Seite 11

5 The following points must be observed to ensure proper
operation of the spindle.
 The machine must be connected as shown in Figure 1, 2 or 3.
 The hose length between the maintenance unit and the machine should not be longer than 3
metres.
 The air for the deflection does not have to be oiled.
 Take into account the required air volume when using several motors at the same time.
 Make sure that the inside diameter of the supply air hose to the spindle is correct. Please refer to
the technical data of the machine (www.mannesmann-demag.com). In the case of overlong hoses
the inner diameter must be matched to the hose length.
 Ensure that the flow rate of the maintenance unit is sufficient.
 Operate each spindle with a separate maintenance unit.
 Mount the maintenance unit level with or above the spindle to ensure reliable lubrication.
6 Exhaust air guiding
 You can guide the exhaust air away with all machines providing a threaded exhaust port. The
exhaust air is then guided with a hose into an oil trap or alternatively into a silencer or an exhaust
throttle. Please note that these methods may lead to a reduced rotational speed of the machine.
7 Commissioning
 Before connecting the machine, the compressed air line (the compressed air hose) must be blown
through thoroughly to remove any dirt particles.
 Before connecting the machine, check your compressed air for water content. Water, corrosion,
etc. in the pipe network cause rust inside the motor and can cause high wear or failure of the
machine. Prescribed air quality according to DIN ISO 8573-1, quality class 4.
 Set the oil delivery quantity to 1-2 drops (1 drop = 15 mm³) per minute. Air motors require approx.
50 mm³ oil per 1000 standard liters.
 Turbine spindles do not require a lubricated supply air.
 Set an operating pressure of max. 6.3 bar on the maintenance unit. Check oil level and top up if
necessary.
 Check the correct oil delivery quantity of the maintenance unit. Operate the machine for approx. 5
minutes at idling speed and check for a constant speed. If the speed drops then lubrication must
be increased.
 To avoid unnecessary wear do not operate the machine at idle speed during productive use.
 Oversized tool inserts result in the risk of accidents. Profile grinding tools: clamping length and
diameter according to DIN 69170.
 Disc and tungsten carbide cutters: Never exceed the permissible peripheral speed.
 During operation the machine can heat up to 65° Celsius on the front housing. This is not a
malfunction.
8 General tool changing
 Hold the spindle with the appropriate wrench and open the collet nut.
 Loosen and remove any stuck insertion tools by lightly tapping on the shaft.
 When changing the insertion tools insert at least 10mm into the collet chuck.
 Pay attention to the manufacturer's instructions in respect of the maximum cantilever length of the
insertion tool.
Tighten the collet nut and check that the tool is tight and centered.

English
11