Brother TC-20B

The Brother TC-20B is a compact column-traverse tapping center designed for high-speed drilling, tapping, and light milling of small parts. It uses a column traverse (moving column) design rather than a moving table, allowing faster axis acceleration and lower machine footprint for small part production.

X/Y/Z travels are 300 x 200 x 200 mm (11.8 x 7.9 x 7.9 in). The spindle runs at 10,000 rpm standard with a 1.5 kW motor on BT30 taper. Optional spindle speeds up to 30,000 rpm are available for micro-machining and aluminum. The 16-tool ATC provides automatic tool changes for mixed drilling and tapping programs.

The column traverse design accelerates the column (carrying Z and spindle) rather than the workpiece, reducing moving mass and enabling faster cycle times on small parts. This is the defining characteristic of the TC series versus the Speedio S/U series which use a moving table.

The CNC-B00 control is purpose-built for the TC series with tapping cycle optimization and high-speed look-ahead. Machine weight is approximately 900 kg with a 900 x 1,300 mm footprint — one of the smallest capable VMC footprints available.

The TC-20B targets manufacturers of small precision parts: electronics, medical, watches, and aerospace fasteners where floor space and cycle time are both critical constraints.

New machines price $40,000-$60,000. Used units from 2012-2022 trade $18,000-$40,000.