HX120 Automatic Four-Corner Round Trimming Machine: Industry-First 120mm Trimming Height with Dual-Sequence Precision

In high-volume printing and packaging production, achieving perfectly uniform rounded corners on thick stacks of paper, cards, or paperboard has always been a challenge. Traditional corner trimming machines often struggle with uneven corner sizes, material tolerances, and burr formation—especially when processing stacked materials above 100mm. The result is wasted time, rework, and inconsistent product quality. To address these pain points, the HX120 Automatic Four-Corner Round Trimming Machine introduces a breakthrough solution. Engineered for demanding bookbinding, card manufacturing, and packaging lines, this machine redefines what’s possible in four-corner trimming.

The most striking feature of the HX120 is its industry-first maximum trimming height of 120mm. While conventional trimmers are limited to lower stacks, the HX120 easily handles thick book blocks, stacked cards, and rigid paperboard bundles up to 120mm in one go. This capability dramatically improves production efficiency by reducing the need to split materials into multiple batches. Whether you’re working with softcover books, calendar pads, or luxury card sets, the HX120 ensures every corner is trimmed cleanly and uniformly. This high-capacity design alone sets a new benchmark in the four-corner rounding equipment market.

What truly distinguishes the HX120 is its innovative “dual-sequence trimming” process. Instead of cutting all four corners simultaneously, the machine intelligently trims the two corners on one side first, then automatically repositions the material to trim the opposite two corners. This sequential approach eliminates the irregular corner sizes and tolerance mismatches common in conventional four-corner machines. Even with stacked materials that have slight internal shifting or varying thickness, the HX120 produces perfectly smooth, burr-free rounded corners. The result is a professional, consistent finish across every single piece in the stack—critical for premium print products and high-end packaging.

Reliability and precision come from the machine’s high-power pneumatic drive system. Unlike mechanical or hydraulic alternatives that may suffer from pressure fluctuations, the pneumatic system delivers stable, repeatable cutting force throughout each cycle. This ensures clean cuts without crushing or deforming the material. The HX120 also features automatic feeding, which reduces operator intervention and increases throughput. Safety is built into every movement: the machine’s design includes protective interlocks and ergonomic controls, allowing one operator to manage high-volume production confidently. From setup to finished product, the HX120 minimizes downtime and maximizes output quality.

The HX120 Automatic Four-Corner Round Trimming Machine is ideal for bookbinding plants, playing card manufacturers, stationery producers, and rigid box makers. It handles materials such as paper blocks, paperboard, PVC cards, and layered composites with ease. By combining a record 120mm trimming height, dual-sequence process, pneumatic stability, and automatic feeding, the HX120 solves the most persistent quality issues in corner rounding. To learn more about this game-changing machine or to request a technical datasheet, visit our product page. Upgrade your corner trimming line with the HX120—where innovation meets industrial reliability.