Chicago-Latrobe
Chicago-Latrobe 55464 118 Degree Silver & Deming Drill 1/2 Reduced Shank
A 1-inch high-speed steel drill bit with a 118-degree point and 1/2-inch reduced shank for large-hole drilling in standard chucks
- TypeDrill Bits
- MaterialHigh Speed Steel
- High-speed steel construction resists wear during heavy drilling
- 118-degree point angle centres quickly on flat surfaces
- Black oxide finish reduces friction and chip welding
- Half-inch reduced shank fits standard drill chucks securely
- Model 55464 identifies the exact bit for reordering
1-Inch Reduced Shank Drill Bit
The Chicago-Latrobe 55464 is a Silver & Deming drill bit designed for creating 1-inch holes in metal using a 1/2-inch chuck. It suits maintenance technicians and fabricators who need large-diameter capacity on standard drill presses or heavy-duty handheld drills.
Upgrading from standard twist bits
Standard twist drills typically max out at 1/2-inch shank diameter, limiting hole size. This bit bridges the gap when you need a 1-inch bore but lack a taper-shank machine. The jump is worth it for occasional large-hole work where a dedicated mag drill is not justified.
Straightforward chuck installation
The 1/2-inch reduced shank seats directly into a standard three-jaw chuck without adapters. Black oxide finish aids chip evacuation and reduces galling. The 118-degree point requires adequate feed pressure to start cleanly; light pressure on hard steel can cause walking or premature wear.
High-Speed Steel Construction
Made from high-speed steel with a black oxide finish, the bit resists heat buildup during extended cuts in mild steel and cast iron. The material choice balances toughness and wear resistance for general-purpose shop use where coolant may not be available.
Highlights
- High-speed steel construction resists wear during heavy drilling
- 118-degree point angle centres quickly on flat surfaces
- Black oxide finish reduces friction and chip welding
- Half-inch reduced shank fits standard drill chucks securely
- Model 55464 identifies the exact bit for reordering
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | High Speed Steel |
Questions about this item
What chuck size does the 1/2 reduced shank on this 55464 drill bit fit?
The 1/2 inch reduced shank fits any standard drill chuck that accepts a 1/2 inch diameter shank.
How do I install this high-speed steel bit correctly in my drill?
Open the chuck fully, insert the shank completely, and tighten securely on the reduced shank section — not on the flutes — to prevent slippage.
When should I replace this black oxide finished drill bit?
Replace the bit when the 118 degree cutting edges become dull, chipped, or when drilling produces excessive heat and poor chip evacuation.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
