Chicago-Latrobe
Chicago-Latrobe 77669 1/2 in 118° Carbide Tipped Drill Bit
Carbide-tipped jobber drill bit with a 118-degree point for general-purpose drilling
- TypeDrill Bits
- Carbide tip resists wear for longer cutting life
- 118° conventional point starts holes cleanly without walking
- Jobber length gives standard reach for general drilling
- Bright uncoated finish suits ferrous metals and plastics
- 1/2 in fractional size matches common chuck capacity
1/2 in Carbide Tipped Drill Bit
The Chicago-Latrobe 77669 is a jobber length drill bit with a 1/2 inch diameter and a 118 degree conventional point. Its carbide tipped construction provides hardness for drilling abrasive or tough materials. It is suited for machinists and maintenance technicians who need a durable bit for general purpose drilling tasks.
Capacity and headroom in tough materials
The 1/2 inch size handles larger hole requirements in steel, cast iron and non-ferrous alloys. Carbide tips resist wear longer than high speed steel when run at appropriate speeds. The bright uncoated surface works well in many applications but lacks the lubricity of coated bits in sticky materials. It runs out in deep holes where coolant through capability would clear chips more effectively.
Build quality and daily use implications
The solid carbide tip is brazed to a steel body for shock resistance during hand held or machine drilling. A straight shank fits standard three jaw chucks and collets without adapters. Zero coolant holes mean external flood or mist coolant must be directed at the cut zone. The 118 degree point centres easily on flat surfaces but may walk on curved or angled entries without a spot drill.
Highlights
- Carbide tip resists wear for longer cutting life
- 118° conventional point starts holes cleanly without walking
- Jobber length gives standard reach for general drilling
- Bright uncoated finish suits ferrous metals and plastics
- 1/2 in fractional size matches common chuck capacity
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
Will the 118° point angle on this 1/2 in carbide tipped bit work smoothly with my older drill press chuck?
The 118° conventional point is designed for general-purpose drilling and fits standard chucks that accept a 1/2 in shank, so it will engage cleanly with older drill presses.
How can I confirm the 77669 bit is cutting correctly once I start drilling?
A properly working bit produces consistent chips rather than powder, holds a straight hole at the 0.5000 in diameter, and shows even wear on both cutting lips without excessive heat buildup.
Does the package include any coolant or lubricant for the non-coolant-through design?
The box contains only the single carbide tipped jobber length drill bit; cutting fluid or lubricant must be purchased separately for the non-coolant-through design.
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