Brother TC-20A

The Brother TC-20A is a compact column-traverse tapping center that preceded the TC-20B, establishing the ultra-compact high-speed drilling and tapping platform that Brother would develop through multiple generations. With X/Y/Z travels of 300 x 200 x 200 mm (11.8 x 7.9 x 7.9 in) and a BT30 spindle running at 8,000 RPM, the TC-20A was designed for high-speed drilling, tapping, and light milling of small precision components.

The column-traverse design moves the spindle column rather than the table in the X-axis, reducing moving mass and enabling faster acceleration for point-to-point rapid moves between hole positions. This architectural choice makes the TC-20A exceptionally fast on parts with many drilled and tapped features, where repositioning speed between operations dominates cycle time.

The TC-20A uses a 16-tool automatic tool changer and the Brother NC-A00 control, an earlier generation of Brother's proprietary CNC platform. The machine weight of approximately 850 kg and footprint under 1 square meter make it one of the most compact capable CNC machining centers ever produced. No special foundation is required, and the machine can be installed on any standard shop floor.

As a legacy model, the TC-20A is available exclusively on the used market. Prices range from $8,000 to $25,000 depending on condition, hours, and included accessories. The machine remains practical for shops needing a dedicated small-part drilling and tapping station where the low acquisition cost and minimal floor space requirements are compelling advantages.