The Dormer Pramet C505 22.0mm HSS-E Ball Nose End Mill is a precision 2-flute tool designed for accurate 3D contouring and copy milling in free-machining steel and copper alloys. Built with a Weldon 20 mm shank for secure mounting, it delivers consistent performance on complex surfaces.

• Diameter: 22.0 mm
• Flutes: 2
• Length of cut: 38 mm
• Overall length: 104 mm
• Reach with neck relief: 53.5 mm
• Full profile radius: 11 mm
• Shank: Weldon, 20 mm
• Material: HSS-E cobalt-based with bright finish
• Helix: 30°
• Rake angle: 12°
• Standard: DIN 844 K
• Application: Copy milling in free machining steel and copper or copper alloys

Designed for smooth, precise 3D profiles, the 11 mm ball-nose radius delivers clean finishes on curved surfaces while maintaining process stability with its 30° helix and 12° rake. The cobalt-based HSS-E core provides enhanced wear resistance and heat tolerance, extending tool life in demanding materials. The 2-flute configuration supports efficient chip evacuation and higher feed rates, making it well-suited for rapid prototyping, mold/model finishing, and detailed surface work. With DIN 844 K compatibility and a robust Weldon shank, this end mill offers reliable interchangeability and repeatable performance in everyday machining workflows.