Cleveland Golf
Cleveland Golf Cobalt Double End Mill 3/8 4FL CC
A double-ended cobalt square end mill with four flutes and a 30-degree helix for finishing cuts
- TypeHole, Drill, Bore & Wire Gauges
- Cobalt construction resists heat during finishing cuts
- Four-flute geometry improves surface finish in steel
- Double-ended design provides two cutting ends per tool
- Bright uncoated surface suits general-purpose milling
- 30-degree helix angle balances chip evacuation and strength
Double-end cobalt mill for finishing
The Cleveland Golf Cobalt Double End Mill 3/8 4FL CC is a general-purpose square end mill built from cobalt steel for machining ferrous and non-ferrous materials. Its double-ended design provides two cutting ends on a single shank, effectively doubling tool life for finishing operations. The bright, uncoated finish suits shops that prefer to apply their own coatings or run uncoated tooling. Right-hand cutting with a 30-degree helix supports conventional milling strategies.
Sustained finishing performance
Four flutes and a 30-degree helix angle promote stable chip evacuation during extended finishing passes, reducing chatter when the tool is fully engaged. The cobalt substrate maintains hardness at elevated temperatures generated by prolonged cuts, preserving edge integrity better than high-speed steel alternatives. A 3/4-inch length of cut allows deep profiling without excessive overhang. The 3/8-inch shank diameter matches the cutting diameter for consistent rigidity.
Upgrade path and fit
This tool replaces single-ended cobalt or high-speed steel end mills when finishing cycle time and tool-change frequency are concerns. The double-ended layout is worthwhile when the machine spindle can accommodate the 3-1/2-inch overall length and the workpiece geometry allows access to both ends. It is not suited for roughing passes that demand chip-breaker geometries or for applications requiring a corner radius other than .000 inches.
AVAILABLE OPTIONS
The Cleveland Golf Cobalt Double End Mill 3/8 4FL CC is available in the standard 3/8-inch diameter with four flutes and a bright finish. No alternative coatings, flute counts, or corner radii are offered for this specific list number. Selecting this tool commits the operator to the fixed 3/4-inch length of cut and 30-degree helix angle defined by the HDC-4C specification.
Highlights
- Cobalt construction resists heat during finishing cuts
- Four-flute geometry improves surface finish in steel
- Double-ended design provides two cutting ends per tool
- Bright uncoated surface suits general-purpose milling
- 30-degree helix angle balances chip evacuation and strength
Specifications
| Brand | Cleveland |
|---|---|
| Type | Hole, Drill, Bore & Wire Gauges |
Questions about this item
How much heat does the 30-degree helix generate during a full-day finishing run?
The 30-degree helix on this cobalt end mill is designed for finishing cuts, which typically produce less heat than heavy roughing, but actual temperature depends on your spindle speed, feed rate and coolant use.
What holder or collet is required for the 3/8-inch shank?
You need a 3/8-inch collet, end-mill holder or shrink-fit chuck that matches your machine's taper; the shank diameter is exactly 3/8 inch.
Will this double-end cutter fit in the same tool changer pockets as my older single-end 3/8-inch mills?
At 3-1/2 inches overall length it is longer than many single-end tools, so check your machine's maximum tool-length and pocket clearance before loading.
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