Chicago-Latrobe
Chicago-Latrobe 50659 118 Degree Heavy-Duty Extra Long Drill Bit
Extra long 118-degree heavy-duty drill bit with notched point for deep drilling in general-purpose machining
- Extra reach for deep holes with 9 in maximum drilling depth
- 118 degree point angle centres the bit quickly in metal
- High-speed steel construction resists wear during repetitive drilling
- Black oxide finish reduces friction and helps prevent rust
- 28 degree helix clears chips efficiently in deep cuts
Heavy-Duty Extra Long Drill Bit
The Chicago-Latrobe 50659 is a heavy-duty extra long drill bit built for general-purpose machining. It targets machinists and maintenance technicians who need extended reach for deep-hole drilling tasks. The fractional-inch design suits standard workshop requirements.
High-Speed Steel Construction and Notched Point
The bit is manufactured from high-speed steel with a black oxide finish for durability. Its 118-degree notched point angle helps centre the bit and reduces walking on contact. A 28-degree helix angle supports chip evacuation during deep drilling operations. The shank fits standard drill chucks for direct use.
Maximum Drilling Depth and Application Limits
This tool provides a maximum drilling depth of 9 inches, making it suitable for through-holes in thick plate or stacked material. The 4xD length-to-diameter ratio offers rigidity for the 3/4-inch diameter. It is not intended for precision micro-drilling or specialised alloy applications beyond general-purpose machining.
Highlights
- Extra reach for deep holes with 9 in maximum drilling depth
- 118 degree point angle centres the bit quickly in metal
- High-speed steel construction resists wear during repetitive drilling
- Black oxide finish reduces friction and helps prevent rust
- 28 degree helix clears chips efficiently in deep cuts
Specifications
| Brand | CHICAGO-LATROBE |
|---|
Questions about this item
How does the 118-degree point angle perform under sustained heavy-duty drilling?
The 118-degree notched point is designed for general-purpose machining and helps reduce walking at the start of the cut, maintaining centring during deep passes.
Does the black oxide high-speed steel generate excessive heat during all-day use?
The black oxide finish on the high-speed steel body aids chip flow and reduces friction, helping to manage heat buildup during extended drilling sessions.
What shank style does the 50659 need to fit my drill chuck?
This bit uses a straight shank design compatible with standard three-jaw drill chucks that accept a 3/4-inch capacity.
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