Summary

This document provides information on portable drills, covering different types, features, and applications. The text details corded versus cordless versions, chuck types, RPM, and variable speeds. It also discusses the usage of hammer drills and off-set chucks.

Full Transcript

Portable Drills         Corded or cordless o Corded drills are now rare – older models or heavy-duty drills Keyed or keyless Jacob’s Chuck o 3/8” or ½” Heavy duty o Slower RPM o Larger bits Hammer drill o Moves in and out while drilling  Not an impact driver o Used with masonry bits Variabl...

Portable Drills         Corded or cordless o Corded drills are now rare – older models or heavy-duty drills Keyed or keyless Jacob’s Chuck o 3/8” or ½” Heavy duty o Slower RPM o Larger bits Hammer drill o Moves in and out while drilling  Not an impact driver o Used with masonry bits Variable speed o Drilling holes on high o Driving screws on low Chucks can be replaced Brushes complete the circuit o Need replacing after a while  When about ¼” left Off-set chuck o Allows to get into corners

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