Chicago-Latrobe 53147 47/64 in 118 Degree Taper Shank Drill Bit

Chicago-Latrobe 47/64 in Taper Shank Drill Bit

The Chicago-Latrobe 53147 is a general-purpose taper shank drill bit sized at 47/64 in with a 118 degree point angle. It is made from high speed steel with a black oxide finish for durability in metalworking tasks. The conventional point design suits standard drilling operations. This tool is intended for machinists and maintenance technicians who need a precise hole size in ferrous or non-ferrous materials.

Practical limits of the 118 degree conventional

The 118 degree point angle is a general-purpose geometry that performs well across a range of common materials but is not optimised for hard or abrasive alloys. High speed steel construction provides good wear resistance yet will dull faster than carbide when used in high-volume production or on hardened steels. The black oxide coating aids chip flow and reduces galling but does not eliminate the need for cutting fluid in deep holes. The taper shank requires a matching machine spindle or sleeve for secure drive.

Check your machine spindle

Verify that your drill press, lathe or boring mill accepts a taper shank of the correct Morse taper size for this bit. Ensure the workpiece material is compatible with high speed steel tooling and that you can supply adequate coolant or lubrication for the hole depth required. Confirm the 47/64 in diameter matches the finished hole specification without needing reaming. Buyers who need a straight shank for a three-jaw chuck or a different point angle for specialised materials should select an alternative tool.