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Cobalt end mill, double square ends, bright finish

Cleveland Golf

Cleveland Golf 1/2 in 4-flute double-end square center-cutting cobalt end mill

SKU CH-WBJ1-1YQJX

A 4-flute cobalt end mill with double square ends for plunge cutting, peripheral milling and deep slotting at higher feeds and speeds

  • TypeHole, Drill, Bore & Wire Gauges
  • Cobalt steel resists heat during high-speed milling
  • Four flutes clear chips efficiently for smooth cuts
  • Double-end design provides two cutting edges per tool
  • Center-cutting geometry enables plunge cuts and pocketing
  • 30-degree helix angles balance strength and chip evacuation

Cobalt 4-Flute Double-End End Mill

This Cleveland Golf end mill is a general-purpose cutting tool made from cobalt steel for durability. The 1/2 inch diameter, double-end design provides two square, center-cutting edges in one tool. It suits machinists and fabricators who need reliable plunge cutting, peripheral milling, deep slotting and pocketing performance on a range of materials.

Thermals Noise and Power Draw

Cobalt steel construction resists heat buildup during extended cutting cycles, helping maintain edge integrity at higher feeds and speeds. The bright finish reduces friction without coating-related thermal insulation. As a solid rotary cutter, it produces no electrical noise or power draw; operational sound and heat depend entirely on the spindle, workpiece material and machining parameters used.

Upgrade Path and When It Is Worth It

This tool replaces single-end end mills when twice the cutting edges per holder change reduce downtime. The jump is worth it for shops running repetitive plunge, slot or pocket operations where tool-change frequency bottlenecks throughput. It is not for buyers who need longer reach beyond the 1 inch length of cut, larger diameters, or specialised geometries such as ball-nose or corner-radius profiles.

Highlights

  • Cobalt steel resists heat during high-speed milling
  • Four flutes clear chips efficiently for smooth cuts
  • Double-end design provides two cutting edges per tool
  • Center-cutting geometry enables plunge cuts and pocketing
  • 30-degree helix angles balance strength and chip evacuation

Specifications

BrandCleveland
TypeHole, Drill, Bore & Wire Gauges

Questions about this item

How is the 1/2-inch shank end mill secured in the holder, and what step is often missed?

Tighten the holder evenly on the 1/2-inch shank using a collet or end-mill holder; the step often missed is verifying the tool runs true with a dial indicator before cutting.

When will the cobalt cutting edges need replacement under normal shop use?

Replace the tool when the four flutes show visible rounding or chipping, or when the 30-degree helix angles no longer produce clean chips in steel.

What limit appears first during a long deep-slotting pass in steel?

Heat buildup at the 30-degree relief angles dulls the cobalt edges before deflection becomes an issue.

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