Chicago-Latrobe
Chicago-Latrobe 47375 17.50mm HSS 118° Jobber Drill Bit
A 17.5 mm high-speed steel jobber drill bit with a 118-degree conventional point and black oxide finish
- TypeDrill Bits
- MaterialHAWA
- 5 mm diameter drills larger holes
- 118° point angle centres quickly in metal
- High-speed steel resists heat during cutting
- Black oxide finish reduces friction and wear
- Jobber length reaches deeper workpieces
17.50 mm Jobber Drill Bit
The Chicago-Latrobe 47375 is a metric jobber length drill bit made from high speed steel with a black oxide finish. It is intended for general-purpose drilling in metal, wood and plastic where a 17.50 mm hole is required. The conventional 118 degree point angle suits a wide range of materials and standard drilling machines.
118 Degree Conventional Point
The 118 degree point angle provides reliable centring and chip evacuation in common ferrous and non-ferrous materials. It is not a split-point or self-centring geometry, so a centre punch mark is recommended for accurate hole placement on hard or smooth surfaces. The bit has no coolant-through holes and is not designed for internal coolant delivery.
17.5 mm Capacity and Headroom
The bit produces a 17.50 mm diameter hole, decimal equivalent 0.6890 inch, suitable for clearance or tapping operations at that size. High speed steel construction offers good wear resistance in mild steel and aluminium but will dull quickly in hardened alloys or abrasive composites. For larger diameters or production volumes, carbide tooling or a different drill geometry would be required.
Highlights
- 5 mm diameter drills larger holes
- 118° point angle centres quickly in metal
- High-speed steel resists heat during cutting
- Black oxide finish reduces friction and wear
- Jobber length reaches deeper workpieces
Specifications
| Brand | CHICAGO-LATROBE |
|---|---|
| Type | Drill Bits |
| Material | HAWA |
Questions about this item
Should I choose the 17.50 mm or .6890 inch version of this drill bit?
Both figures describe the same 17.5 mm diameter; .6890 is the decimal-inch equivalent, so there is only one size to order.
What does the 118 degree point angle mean when the bit is in a drill press?
The 118° conventional point centres quickly in steel and cast iron and is the standard geometry for general-purpose drilling in a drill press or hand drill.
Does the High Speed Steel material limit the cutting speed I can run?
High Speed Steel tolerates the heat of typical shop drilling speeds in mild steel and aluminium; reduce speed and use cutting fluid in harder alloys to avoid premature wear.
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