Chicago-Latrobe
Chicago-Latrobe 53139 39/64 in 118 Degree Taper Shank Drill
A 39/64 in high-speed steel taper shank drill bit with a 118-degree conventional point and black oxide finish
- TypeDrill Bits
- Color/FinishTan
- 39/64 inch diameter drills large holes precisely
- 118 degree point angle centres quickly in general materials
- High-speed steel construction resists wear during repeated use
- Black oxide finish reduces friction and chip welding
- Taper shank design locks securely into machine spindles
Chicago-Latrobe 53139 Taper Shank Drill
This Chicago-Latrobe 53139 is a high-speed steel drill bit with a taper shank for machine mounting. It suits maintenance technicians and metalworkers who need a general-purpose bit for drilling steel and cast iron. The 118-degree conventional point provides reliable centring without a pilot hole. It is not for buyers who require a straight shank for hand-held drill chucks.
Black Oxide Finish and Morse Taper Mount
The black oxide finish adds corrosion resistance and helps retain cutting fluid during operation. A Morse taper shank locks directly into a machine spindle or sleeve, delivering positive drive without slippage. This mounting method suits drill presses and lathes but will not fit a standard three-jaw chuck without an adaptor sleeve.
High Speed Steel Thermals and Power Draw
High speed steel construction maintains hardness at the temperatures generated when drilling ferrous metals at conventional speeds. The 118-degree point geometry distributes cutting forces evenly, reducing vibration and audible chatter in rigid set-ups. Power consumption follows the machine spindle load and the workpiece material rather than the bit itself.
Highlights
- 39/64 inch diameter drills large holes precisely
- 118 degree point angle centres quickly in general materials
- High-speed steel construction resists wear during repeated use
- Black oxide finish reduces friction and chip welding
- Taper shank design locks securely into machine spindles
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Color/Finish | Tan |
Questions about this item
What taper shank standard does the 53139 drill bit use?
It uses a Morse taper shank that fits standard Morse taper sockets and machine spindles.
What chuck or holder diameter is needed for the 39/64 in drill body?
The drill body measures 39/64 inch, so a holder or sleeve with at least that bore is required.
How is the taper shank seated correctly in the machine spindle?
Insert the shank fully into the Morse taper socket, then give a firm twist to lock the taper before tightening any drawbar or lock.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
