Omron i4

Omron's i4 is a four-axis SCARA aimed at fast planar motion in a compact footprint. It handles payload up to 5 kg across a 550 mm reach, and Omron introduced it in 2021. The tagline frames it as a compact SCARA for light assembly and packaging, sized for dense bench cells where space runs tight.

As a four-axis SCARA, the i4 is built for top-down planar handling rather than complex wrist orientation. That keeps its motion quick and its work-envelope small, which is the point in a crowded cell. At 16.5 kg it's light, and that low mass keeps mounting simple.

On the line, its day job covers assembly, packaging, and dispensing. You can set it on a table or mount it to a wall, matching how bench cells get laid out. Those jobs reward the fast, repeatable moves a compact SCARA is built to deliver.

Precision is the headline: the i4 holds repeatability of 0.01 mm. That figure is what ties it to small-parts assembly, where placement tolerance is tight. A built-in internal controller runs the arm, and the i4 is positioned to integrate with Omron's vision and PLC systems.

The trade-offs are straightforward for a SCARA this size. The 5 kg payload caps heavier tooling and end-of-arm gear, and the 550 mm reach is short next to larger SCARA arms. The body carries an IP20 / NEMA Type 1 rating.

For light bench automation, the i4's strongest card stays that 0.01 mm repeatability. Inside its 550 mm reach and 5 kg limit, that precision is what makes the arm worth specifying for small assembly work.