Cleveland Golf
Cleveland Golf Jobber Drill 17/64 Parabolic Cobalt 135° 2075
Cobalt steel jobber drill with parabolic flutes and 135° notch point for 17/64 in. holes
- TypeAngle, Pitch & Slope Locators
- Cobalt steel resists heat for longer tool life
- Parabolic flutes eject chips efficiently in deep holes
- 135° notch point starts accurately without wandering
- 17/64 in. fractional size fits standard drill chucks
- High-performance grade handles tough alloys and stainless steel
Jobber Drill for Cobalt Steel Drilling
The Cleveland Jobber Drill 2075 is a fractional-inch cutting tool sized 17/64 inch with a decimal equivalent of .2656. It is manufactured from cobalt steel for high-performance drilling tasks. The right-hand cutting direction suits standard machine and hand-held operations. This drill serves machinists and maintenance technicians who require a durable bit for general-purpose metalwork.
Parabolic Flute and Notch Point Geometry
A 135-degree notch point reduces thrust and improves centring at the start of the cut. The parabolic flute profile promotes efficient chip evacuation in deeper holes. A straw-bronze finish identifies the cobalt substrate and provides a degree of lubricity. The straight shank matches the 17/64 diameter for direct chucking without a reduced shank adapter.
Limits of the Non-Coolant Through Design
The absence of coolant-through channels means heat builds up faster in prolonged or deep-hole drilling. Chip packing becomes more likely once the flute length of 2-7/8 inches is exceeded. Users must apply external flood or mist coolant and use peck cycles to maintain tool life. The bit is not suited for high-volume production runs that demand internal coolant delivery.
Highlights
- Cobalt steel resists heat for longer tool life
- Parabolic flutes eject chips efficiently in deep holes
- 135° notch point starts accurately without wandering
- 17/64 in. fractional size fits standard drill chucks
- High-performance grade handles tough alloys and stainless steel
Specifications
| Brand | Cleveland |
|---|---|
| Type | Angle, Pitch & Slope Locators |
Questions about this item
What size drill bit does the 17/64-inch shank fit?
The shank diameter matches the 17/64-inch drill size, so it fits any chuck or collet that accepts that exact fractional dimension.
How much flute length clears chips in this parabolic Jobber drill?
The flute length is 2-7/8 inches, giving the parabolic flutes room to evacuate chips during deep-hole drilling.
Does the 135-degree notch point need centre-punching before drilling?
The 135-degree notch point is self-centring, so you can start the hole without a separate centre punch.
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