Chicago-Latrobe
Chicago-Latrobe 42792 135 Degree Heavy-Duty Jobber Length Drill pneumatic accessory
135-degree split-point drill bit in high-speed steel with TiAlN coating for precise drilling
- TypeDrill Bits
- 135-degree split point starts drilling on contact without walking
- TiAlN coating extends bit life in high-speed steel applications
- Jobber length suits standard chuck depths for general-purpose use
- High-speed steel construction resists heat during prolonged drilling
- Decimal size .3770 matches letter V for precise hole requirements
Chicago-Latrobe 42792 Drill Bit
This Chicago-Latrobe 42792 drill bit is a heavy-duty jobber length accessory designed for pneumatic and power tool use. It features a 135 degree split point made from high speed steel with a TiAlN coating. The bit has a decimal equivalent of .3770 inches and is identified by letter size V. It is a non-coolant through design with zero coolant holes.
Suits general metal drilling.
This bit suits workshops drilling general metal stock where a sturdy jobber length and split point improve starting accuracy. The TiAlN coating adds wear resistance for longer life in steel and alloy. Buyers needing through-coolant capability or coolant holes for deep hole evacuation should look at a different design. It is also not suited for applications requiring a different point angle or shank style.
135 degree split point geometry
The defining specification is the 135 degree split point angle combined with the high speed steel substrate and TiAlN coating. This geometry reduces walking on hard materials and allows faster penetration without a centre punch. The .3770 inch diameter and letter V sizing determine the exact hole size produced. Match this specification to your drawing or tap chart to confirm fit.
Highlights
- 135-degree split point starts drilling on contact without walking
- TiAlN coating extends bit life in high-speed steel applications
- Jobber length suits standard chuck depths for general-purpose use
- High-speed steel construction resists heat during prolonged drilling
- Decimal size .3770 matches letter V for precise hole requirements
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
Questions about this item
What size drill chuck is needed for the 0.3770 inch shank?
The drill bit has a decimal equivalent of .3770 inches, so a chuck that accepts that diameter will hold it securely.
How should the 135 degree split point be started to avoid walking?
Apply light pressure at the centre mark; the 135 degree split point is self-centring, but excessive force before the tip engages can cause the bit to wander.
When does the TiAlN coating indicate the bit should be replaced?
Replace the bit when the gold-coloured TiAlN coating has worn away on the cutting lips, signalling the high-speed steel underneath is dull.
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