Hammerhead HDHD060 Manual Del Usuario página 16

OPERATING INSTRUCTIONS
12. Drilling In Metal
For maximum performance, use high-speed steel bits for metal or steel drilling.
a. When drilling metals, use light oil on the drill bit to keep it from overheating. The oil
will prolong the life of the bit and increase the drilling action.
b. Begin drilling at a very low speed to prevent the bit from slipping off the starting
point.
c. Maintain a speed and pressure that allows cutting without overheating the bit.
Applying too much pressure will:
• Overheat the hammer drill
• Wear the bearings
• Bend or burn the bits
• Produce off-center or irregularly-shaped holes
13. Drilling In Masonry
For maximum performance, use carbide-tipped masonry bits when drilling holes in
brick, tile, concrete, etc.
a. Maintain a speed and pressure which allows cutting without overheating the bit or
drill. Applying too much pressure will:
• Overheat the hammer drill
• Wear the bearings
• Bend or burn bits
• Produce off-center or irregular-shaped holes
b. Apply light pressure and medium speed for best results in brick.
c. Apply additional pressure for hard materials such as concrete.
d. When drilling holes in tile, practice on a scrap piece to determine the best speed and
pressure. Begin drilling at a very low speed to prevent the bit from slipping off the
starting point.
16 6.0 AMP HAMMER DRILL