Mafell 91C501, Translation Of The Original Operating Manual

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5.4 Additional limit stop
The additional limit stop 8 (Fig. 3) can be used for machining corners.
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Pull the additional limit stop 8 (Fig. 3) from its bracket and insert it in the base plate. (Fig. 4)
5.5 Collets
Danger
To protect the thread, only screw the union nut 3 (Fig. 1) lightly onto the spindle 1, but
do not tighten when no tool is inserted. Collet 2 could get pressed together too much
and be damaged in the process.
•
Always use the correct tool size for the respective collet.
•
Oil the collet a little at the beginning and after longer use.
• Unscrew the union nut 3 with the collet 2.
•
Tilt out the collet 2 to the side.
•
If the collet is jammed, loosen it with a rubber hammer by a light blow from behind.
5.6 Extraction hood
Always use the extraction hood 9 while working with the tool (Fig. 4).
Connect the machine to a suitable external dust extractor during all work generating a considerable amount of
dust. The air velocity must be at least 20 m/s (65.6 ft / sec.).
The internal diameter of hose connector 10 (Fig. 4) is 29 mm (1 9/64 in.).
The extraction hood is equipped with a thrust ring brake for milling cutters with thrust ring.
On milling cutters without thrust ring, the brake can be removed by pulling the spring-loaded brake pin upwards
and off.
To reactivate the brake, press the spring-loaded brake pin into the bracket provided until it engages.
6 Service and maintenance
Danger
Pull the power plug during all service work.
MAFELL machines are designed to be low in maintenance.
Replace the carbon brushes at the latest after 125 - 150 operating hours. The spare parts can be referenced in
chapter 9.
The ball bearings used are greased for life. When the machine has been in operation for a longer period of time,
we recommend to hand the machine in at an authorised MAFELL customer service shop for inspection.