Ballistic Tests for Machine Safety

Machine Safety Windows Ballistic Tests for Machine Safety

2025-09-17 From | Translated by AI 1 min Reading Time

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The manufacturer of protective systems for production machines, Hema, regularly has the durability of its products tested by independent institutes through ballistic tests.

Hema regularly subjects its machine safety windows to ballistic tests by independent institutes.(Image: Hema Maschinen- und Apparateschutz GmbH) — Hema regularly subjects its machine safety windows to ballistic tests by independent institutes.
(Image: Hema Maschinen- und Apparateschutz GmbH)

How durable are Hema's machine safety windows? To determine this, the strongest load case is simulated for the windows: a ballistic test with 2.5-kilogram projectiles. The result: Hema's machine safety windows withstand up to 8,000 joules.

Such a load on a safety pane can occur in practice during the production process, for example, if workpieces come loose from the clamping device during machining and are ejected. Machine safety panes from Hema reliably contain these as well as chips and sparks within the production system, thereby protecting the operating personnel—even with constant contact between the panes and cooling lubricants.

Composite panes ensure retention capability

The ballistic tests are conducted by independent institutes in accordance with the standards for cutting machine tools. The windows are subjected to projectiles weighing up to 2.5 kilograms at a speed of 80 m/s – Hema's machine safety windows must withstand an impact energy of up to 8,000 joules.

Machine safety panes from Hema are designed as a composite of polycarbonate and safety glass. The polycarbonate pane is located on the operator side and provides high retention capability. Toward the machine interior, machine safety glass protects the polycarbonate from contact with cooling lubricants, as this would otherwise cause brittleness and a rapid loss of retention strength.

Quality tests ensure a high level of safety

The stress tests are part of Hema's quality philosophy. The company operates with a certified quality management system according to DIN EN ISO 9001:2015. In addition to collaborating with institutes, Hema also monitors the quality of its machine protection systems at its headquarters in Seligenstadt. Materials, components, and products are tested for their load capacity under realistic conditions on in-house test benches before they go into series production.

Compliance with environmental regulations such as RoHS and REACH is just as self-evident as the consistent advancement of internal processes based on the Kaizen principle.

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Date: 08.12.2025

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