Chicago-Latrobe
Chicago-Latrobe 41788 135 Degree Heavy-Duty Jobber Length Drill pneumatic accessory
A 135-degree split-point jobber drill bit in high-speed steel with TiN coating for accurate starts and longer life
- TypeDrill Bits
- MaterialHAWA
- 135-degree split point starts on contact for accurate holes
- High-speed steel with TiN coating resists wear and heat
- Jobber length fits standard chucks for versatile use
- Size R with .3390 decimal equivalent matches precise specs
- Chicago-Latrobe 41788 built for heavy-duty drilling tasks
Chicago-Latrobe 41788 Drill Bit
The Chicago-Latrobe 41788 is a jobber length drill bit designed for heavy-duty drilling tasks. It features a 135 degree split point that aids in accurate starting and reduces walking on hard surfaces. The bit is constructed from high speed steel with a TiN coating for extended tool life.
Suited for precision metal drilling
This bit suits machinists and maintenance technicians who require a durable tool for drilling steel and other ferrous materials. The split point geometry provides good centring without a centre punch. Buyers who need coolant-through capability or a different shank style should look at other options.
135 degree split point geometry
The defining specification is the 135 degree split point, which determines the bit's self-centring behaviour and suitability for harder materials. The decimal equivalent of the letter R size is .3390 inches. This point angle is the primary factor in deciding if this bit matches the application.
Highlights
- 135-degree split point starts on contact for accurate holes
- High-speed steel with TiN coating resists wear and heat
- Jobber length fits standard chucks for versatile use
- Size R with .3390 decimal equivalent matches precise specs
- Chicago-Latrobe 41788 built for heavy-duty drilling tasks
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
What size drill chuck do I need to hold the 0.3390 inch shank on this bit?
A standard 3/8 inch or 1/2 inch drill chuck will accept the 0.3390 inch diameter shank of this jobber length drill bit.
Will the 135 degree split point start cleanly on hardened steel without a centre punch?
Yes, the 135 degree split point design is made to self-centre and reduce walking on hard materials such as hardened steel.
How can I confirm the TiN coating is intact after the first few holes?
Inspect the cutting edges; the gold-coloured titanium nitride layer should remain visible on the flutes and margins with no dull grey wear spots.
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