Cobra Carbide
Cobra Carbide 55956 3xD High Perf Non-Coolant Drill 9.30mm .3661
A 3xD high-performance non-coolant drill bit with a 9.30 mm diameter and .3661 decimal equivalent
- 3xD length gives deeper holes in one pass
- Non-coolant design removes need for external fluid supply
- 30 mm diameter matches precise metric specification
- .3661 decimal equivalent simplifies imperial tool selection
- California Proposition 65 warning informs safe handling practices
3xD High-Performance Drill
The Cobra Carbide 55956 is a solid-carbide drill bit designed for 3x diameter drilling depth. It suits machinists and maintenance teams who need precise holes in metal without through-coolant delivery. The 9.30 mm diameter matches the .3661 inch decimal equivalent for imperial tooling setups.
Non-Coolant Solid Carbide Construction
Solid carbide gives high wear resistance and rigidity for consistent hole quality in steel and alloys. The non-coolant design means the flutes must evacuate chips unaided, so the user controls peck cycles and feed rates to prevent packing. No coolant channels simplifies resharpening and reduces tool cost.
3xD Depth Constraint
The 3xD geometry limits effective drilling depth to roughly three times the 9.30 mm diameter. Deeper holes need a different length series or a peck-drilling strategy that the user must plan. California Proposition 65 warnings note chemicals linked to cancer and reproductive harm, so appropriate personal protection is required.
Highlights
- 3xD length gives deeper holes in one pass
- Non-coolant design removes need for external fluid supply
- 30 mm diameter matches precise metric specification
- .3661 decimal equivalent simplifies imperial tool selection
- California Proposition 65 warning informs safe handling practices
Specifications
| Brand | COBRA CARBIDE |
|---|
Questions about this item
What shank diameter does the 9.30 mm drill need to fit in a chuck?
The drill has a 9.30 mm cutting diameter, so a 9.30 mm or larger chuck capacity is required.
What shank style does the 55956 drill use for mounting in a holder?
It uses a standard straight shank that fits a drill chuck or collet matching the 9.30 mm size.
How is the 3xD non-coolant drill installed and what step is often missed?
Clamp the straight shank securely in a chuck, ensure the workpiece is rigid, and apply external coolant since the tool has no internal channels.
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