More elaborate types of drills are composed of two main parts: a replaceable device that does the actual cutting, called a bit, and a second device that drives it. Both devices may be referred to as drills. Two common types of rotary bits are the auger and the twist bit. Hand-powered ...
Figure 1. Tricone bit for continuous drilling in very hard rock: (1) male taper joining thread (nipple), (2) lug, (3) bearing blow-through channels in lug and journal, (4) lug journal, (5) hard-alloy bits with semispherical working parts, (6) lock pin, (7) cutters, (8) roller...
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do not rub your eyes and wash them well with fresh ○ During use, try to avoid swarf or dust on the tool from clean water such as tap water and contact a doctor falling on the battery. immediately. ○ When suspending operation or after use, do not leave If left untreated, the liquid...
CAUTION 1. If liquid leaking from the battery gets into your eyes, do not rub your eyes and wash them well with fresh clean water such as tap water and contact a doctor immediately. If left untreated, the liquid may cause eye-problems. 2. If liquid leaks onto your skin or clothes, ...