Chicago-Latrobe
Chicago-Latrobe 57232 118 Degree Split Point Jobber Drill 1/2 in
A 1/2 inch high-speed steel jobber drill bit with a 118-degree split point for accurate starting and black oxide finish
- TypeDrill Bits
- MaterialHAWA
- 118-degree split point starts cleanly without wandering
- 1/2 inch fractional size matches standard chuck capacities
- High-speed steel body resists heat during extended drilling
- Black oxide finish reduces friction and chip welding
- Jobber length provides versatile reach for general-purpose work
Chicago-Latrobe 57232 jobber drill
The Chicago-Latrobe 57232 is a jobber-length drill bit made from high-speed steel with a black oxide finish. It is designed for general-purpose drilling in metal, wood and plastic. The 1/2 inch fractional size suits maintenance, fabrication and automotive tasks. Buyers who need a smaller diameter or a different point geometry should choose another bit.
118 degree split point reduces thrust
The 118-degree split point centres the bit without a centre punch and lowers the force required to start the cut. Black oxide coating helps retain lubricity and resist corrosion during normal use. The non-coolant-through design means chips clear through the flutes without internal passages. No coolant holes are present on this tool.
Consistent performance in sustained drilling
Under continuous drilling the high-speed steel body maintains hardness at elevated temperatures. The split point geometry continues to self-centre as the cutting lips wear. Black oxide surface treatment reduces galling during extended cuts. The tool has no internal coolant delivery for deep-hole applications.
Highlights
- 118-degree split point starts cleanly without wandering
- 1/2 inch fractional size matches standard chuck capacities
- High-speed steel body resists heat during extended drilling
- Black oxide finish reduces friction and chip welding
- Jobber length provides versatile reach for general-purpose work
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
How is the 1/2 inch split-point jobber drill installed in a drill chuck, and what step do people often get wrong?
Open the chuck fully, insert the bit shank straight until it seats, then tighten securely; the common error is not centering the shank, which causes run-out.
What maintenance or replacement will the high-speed steel 118-degree split-point bit need later?
Resharpen the split point when cutting edges dull; replace the bit if the flutes wear down or the shank becomes damaged.
What limit appears first during sustained drilling with this black-oxide jobber bit?
Heat buildup in the high-speed steel causes loss of hardness and cutting efficiency before the black-oxide coating wears away.
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