Chicago-Latrobe
Chicago-Latrobe 55460 15/16 in 118 Degree Silver & Deming Drill 1/2 Reduced Shank
A high-speed steel drill bit with a 15/16 inch diameter and 118 degree point angle for general-purpose drilling
- TypeDrill Bits
- MaterialHigh Speed Steel
- 15/16 in diameter handles large holes
- 118 degree point angle starts cuts cleanly
- High-speed steel body resists wear
- Black oxide finish reduces friction
- 1/2 in reduced shank fits standard chucks
Chicago-Latrobe 55460 Drill Bit
The Chicago-Latrobe 55460 is a Silver & Deming drill bit designed for drilling large-diameter holes in metal using a standard 1/2 inch chuck. It suits maintenance technicians and fabricators who need a single bit to bridge the gap between standard twist drills and larger hole-making tools.
118 Degree Point and Black Oxide Finish
The 118 degree point angle provides reliable centring and efficient chip evacuation in general-purpose steel and iron. A black oxide finish adds lubricity and corrosion resistance, reducing galling and extending the usable life of the high speed steel cutting edges.
15/16 Inch Diameter with Reduced Shank
The 15/16 inch cutting diameter requires a machine capable of delivering sufficient torque at low speed for this width of cut. The 1/2 inch reduced shank fits common drill presses and heavy-duty hand drills, but the large flute volume demands rigid workpiece clamping to prevent bit seizure.
Highlights
- 15/16 in diameter handles large holes
- 118 degree point angle starts cuts cleanly
- High-speed steel body resists wear
- Black oxide finish reduces friction
- 1/2 in reduced shank fits standard chucks
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | High Speed Steel |
Questions about this item
How often will the 15/16 in high-speed steel cutting edges need resharpening?
Resharpening frequency depends on the material being drilled and the feed pressure used; the 118-degree point angle can be reground on a standard bench grinder when cutting performance drops.
What is the first limit reached when drilling deep holes in steel with the 1/2 in reduced shank?
The 1/2 in reduced shank limits the maximum chuck capacity required, so the drill press or hand drill must accept at least a 1/2 in shank before the 15/16 in bit can be used.
How much heat builds up in the black-oxide finish during continuous drilling?
The black-oxide finish helps retain cutting lubricant and dissipate heat, but sustained high-speed drilling in steel will still generate significant heat at the cutting lips.
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