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A ball is one that has a spherical shape on the entire base. The number after R represents the ball radius. R5 indicates a spherical shape with a radius of 5 mm, and its diameter is 10 mm.
Shape of the tip of the end mill (R is the radius)
| Square | ball | corner radius (radius type) |
 Watermark angle
|
 Example: R5 (Ball radius) |
 Watermark angle
Example: 12×R2 (Corner radius × outer diameter) |
(FAQID:10349)