Gerdau Grip 120 from Gerdau SA - steel grinding balls for heavy-duty mills

Reviewed: ad hoc news B2B & Pro desk. Edited and checked on 2026-06-28, 01:22. Details in the imprint.

The Gerdau Grip 120 grinding ball looks almost modest at first glance, a dark steel sphere rolling slightly rough under your palm before it disappears into the roar of an industrial mill. On the feed chute, the balls clatter together with a sharp metallic rhythm, turning ore into slurry day after day.

What Gerdau Grip 120 does

Gerdau Grip 120 is part of Gerdau's forged steel grinding ball line for rotary mills in mining and cement production, designed to deliver high impact resistance and controlled wear in long operating cycles. The balls are manufactured with tight size tolerances and a carefully controlled heat-treatment profile for consistent performance across a batch.

In practice, that means mill operators can run higher tonnage without constantly adjusting for unexpected fragmentation or soft spots in the charge, which mining engineer João Pereira described as "a quiet reliability you really notice after a few thousand hours of operation" during a recent site presentation. With diameters tailored to large SAG and ball mills, Grip 120 slots into Gerdau's wider grinding portfolio that targets high-throughput plants.

Forged steel and hardness control

Grip 120 uses forged steel instead of cast alloy, a choice that gives the balls a dense microstructure and reduces internal porosity that can lead to early cracking under repeated impact. In the yard, a single ball rings with a clean sound when tapped with a hammer, a small but telling sign of the solid core that process engineers look for.

The heat treatment aims at achieving a hardened outer shell with a tough core so the ball resists surface wear yet avoids catastrophic breakage when trapped between liners and heavy ore. This balance of hardness and toughness matters directly for mill uptime, because broken balls can damage liners and force unplanned shutdowns, a cost operators want to avoid.

Where Grip 120 fits in

Grip 120 targets the heavy end of Gerdau's grinding portfolio, positioned for plants that run coarse feed and require significant impact energy per ball. It complements smaller diameters that serve secondary grinding stages, giving operators a single supplier for different parts of the circuit.

That integrated offer is one reason product manager Rafael Lima emphasizes whole-of-mill thinking when presenting Grip 120 to customers, arguing that standardizing ball chemistry and treatment across the line simplifies quality control and performance benchmarking between plants.

Availability and ordering

Gerdau markets its grinding balls primarily to mining and cement producers in Latin America and North America, typically under long-term supply contracts aligned with plant maintenance windows. Grip 120 orders are usually planned months ahead because batch production and logistics have to match shutdown schedules.

For procurement teams, the product is handled as part of Gerdau's special steel division, with technical datasheets and mill test certificates provided as part of each shipment so buyers can verify hardness profiles and traceability back to the melt.

Context and Gerdau SA shares

Grip 120 may be a small piece next to Gerdau's large rebar and sheet-steel volumes, but it plugs directly into the mining supply chain that remains a strategic pillar for the Brazilian group. Overall, Gerdau SA shares (ISIN BRGGBRACNPR7) are listed on B3 in São Paulo and trade in Brazilian reais as investors weigh the mix of construction and mining exposure.

This article was AI-assisted and editorially reviewed. Product information without guarantee; prices and availability may change at short notice. No investment advice, no buy or sell recommendation. Stock-market transactions involve risks up to total loss.