Chicago-Latrobe 54114 135 Degree Cobalt Jobber Drill Bit

Chicago-Latrobe 54114 Jobber Drill Bit

The Chicago-Latrobe 54114 is a cobalt jobber-length drill bit designed for heavy-duty drilling tasks. Its split-point tip and 135-degree angle provide accurate starting and reduced walking on hard materials. The TiN coating enhances wear resistance and extends tool life during repetitive use. It suits professionals and serious DIYers needing reliable performance in metalworking applications.

Verify Material Compatibility and Shank Fit

Before ordering, confirm that your workpiece material matches the capabilities of a cobalt bit with TiN coating. Ensure your drill chuck accommodates the jobber-length shank diameter for secure clamping. Check that your drilling equipment delivers sufficient torque and speed control for the intended material hardness. The bit has no coolant holes, so external lubrication may be necessary for deep holes.

Sustained Load Behaviour Without Internal Cooling

Under sustained load, the cobalt construction maintains hardness better than standard high-speed steel at elevated temperatures. The TiN coating reduces friction and heat buildup during prolonged cutting cycles. Without internal coolant channels, heat dissipates through the flute and workpiece, requiring managed feed rates to prevent overheating. Consistent pressure and periodic withdrawal help maintain cutting efficiency over long sessions.