For long-term use, consumables and spare parts for the Class H tester are supplied through the same channel as the machine itself. Typical consumables include striking knives, anvils or supports, specimen centering parts and small mechanical items that wear with heavy use. Instrumented versions may also need replacement striker tips or sensor-related parts over time.

Most common items are kept in stock, so they can be shipped quickly when a lab needs them. For critical environments, many customers keep at least one spare striking knife and basic hardware on site to avoid downtime during intensive test campaigns.

Larger components, such as pendulums, shields or electronics modules, are available as service parts if damage or aging appears after years of operation. All parts are matched to the original design so the machine keeps its accuracy and stays aligned with ASTM and ISO method requirements.

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