Both CNC turning and milling are extremely accurate. Their tolerances can reach up to a thousandth of a millimeter. 

We are thus able to quickly produce a lot of bike components.

CNC milling is vital when it comes to manufacturing bike chainrings. The only limit to what we can create is the practical use of its output. The tool bits are normally cnc machining tungsten. However, they can also have carbide tips for extra hardness and durability.

In CNC chainring milling, we start with aluminum blocks or blanks. Each blank has a bigger diameter than the final machined one. We measure it from the apex of one chainring tooth to the tooth that is diametrically opposite. These blanks serve as the raw material for a variety of chainrings sizes and shapes.

The common types of aluminum alloys we use in CNC bike part manufacturing are AL6061 machining and AL7005/75. Their common name is aerospace aluminum. AL6060 is slightly heavier and cheaper than AL7005. We sometimes chose AL7046 over AL7005. This is since it is 80% stronger and 16% lighter. It, however, costs twice as much.