ALFRA ROTABEST RB50X, Operation Instructions Manual

Page: 16 / 52

16
How to work with annular cutters
•
Push ejector pin (center pin) through head of annular cutter.
•
Core drills with Weldon shank are tightened with clamping screws (DIN 913) on both clamping surfaces.
•
First place annular cutter with ejector pin on a marked centre or marking.
•
Set the cutter and spot-drill, until the entire cut edge is formed as a circle.
•
During the drilling process, the cutter should be cooled permanently. Optimal cooling is possible by internal
cooling with our coolant unit.
•
During the drilling process, do not stop the motor. After the drilling process, draw back the cutter with running
motor.
•
Remove chips and core after each drilling.
Remove chips with chip-remover . Do not touch with bare hands . Danger of injury!
How to work with twist drills
•
The drill chuck with Weldon shank is only to be used with twist drills up to a diameter of 13 mm.
•
Insert drill chuck with MT2 tool holder in the drill spindle.
•
Insert twist drill in drill chuck and tighten.
Cleaning
Pull plug prior to cleaning. Danger of injury by unintentional switching on.
•
Clean the outside of the motor by means of dry compressed air.
•
Check connecting lines on damages.
•
Clean and grease sliding surfaces regularly.
•
Carbon brushes should be replaced after appr. 250 hours running time.
•
After the work is finished we recommend to store the metal core drilling machine in the transport case in a
lying position.