Chicago-Latrobe
Chicago-Latrobe 52478 118 Degree Silver & Deming Drill Bit 1 7/32 in pneumatic accessory
A high-speed steel drill bit with a 118-degree point and reduced shank for 1/2-inch chucks
- TypeDrill Bits
- 118° point angle drills clean holes in metal
- High-speed steel construction resists wear under load
- Black oxide finish reduces friction and corrosion
- 1/2 in reduced shank fits standard drill chucks
- Model 52478 identifies the exact bit for reordering
Industrial Drill Bit 52478
The Chicago-Latrobe 52478 is a Silver & Deming drill bit with a 1 7/32 inch diameter and a 118 degree point angle. It is designed for general-purpose drilling in metal using a power drill or pneumatic tool. The reduced 1/2 inch shank allows compatibility with standard chucks. This accessory targets maintenance technicians and metal fabrication shops needing a large-hole cutter.
High-Speed Steel Black Oxide Finish
The bit is manufactured from machining high-speed steel with a black oxide finish for corrosion resistance and reduced friction. The 118 degree point angle provides a conventional cutting profile suitable for a wide range of ferrous and non-ferrous materials. The reduced shank design ensures the bit seats securely in a 1/2 inch chuck without requiring a specialised large-capacity holder. The construction supports repeated sharpening.
Upgrading From Smaller Twist Drills
This bit replaces the need for step drilling or hole saws when creating a single 1 7/32 inch hole in sheet metal or plate. The jump is worth it when a clean, accurate hole is required at this specific diameter and the workpiece material suits high-speed steel. It is not for buyers who need carbide-tipped performance in hardened steel or abrasive composites, nor for those requiring a full set of incremental sizes.
Highlights
- 118° point angle drills clean holes in metal
- High-speed steel construction resists wear under load
- Black oxide finish reduces friction and corrosion
- 1/2 in reduced shank fits standard drill chucks
- Model 52478 identifies the exact bit for reordering
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
What does the 118-degree point angle mean for drilling performance?
The 118-degree point angle is a general-purpose geometry that centres the bit quickly and works well in mild steel, aluminium and wood without wandering.
What shank size does the 52478 bit use and will it fit my 1/2-inch chuck?
It has a reduced 1/2-inch shank that fits any standard 1/2-inch drill chuck, allowing the larger 1 7/32-inch cutting diameter to be used on smaller-capacity drills.
How do I install this Silver & Deming bit correctly and what mistake should I avoid?
Open the chuck fully, insert the reduced shank until it seats against the jaws, then tighten securely; the common error is not seating the shank fully, which causes run-out and premature wear.
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