The various hardness testers in the Rockwell product group perform classical Rockwell methods (load: 60 - 150 kg), superficial Rockwell methods (load: 15 - 45 kg) and combinations of Rockwell and superficial Rockwell methods (load: 15 - 150 kg).

Applications

The hardness testers in the ZHR product group cover the following methods.

• Classical Rockwell methods (ZHR4150)
  as per ISO 6508 and ASTM E18.
  pre-load: 10 kg. test load: 60, 100, 150 kg
  scales: A B C D E F G H K L M P R S V.
• Superficial Rockwell (ZHR4045)
  as per ISO 6508 and ASTM E18
  pre-load: 3 kg. test load: 15, 30, 45 kg
  scales: N T W X Y.
• Universal Rockwell (ZHR8150)
  as per ISO 6508 and ASTM E18.
  pre-load: 3, 10 kg. test load: 15, 30, 45, 60, 100, 150 kg.
  scales: A B C D E F G H K L M N P R S T V W X Y.
• Rockwell for plastics (LKP)
  as per ISO 2039-2 and ASTM D785 (A & B).

Advantages

• Nose-mounted indenter enables testing at difficult-to-access measurement points.
• Separate indenter, for extended range of application.
• Fully automatic test sequence (including automatic evaluation) eliminates operator influence on test results.
• High test-result reproducibility.
• Rugged construction with zero-backlash, ball-bearing-mounted lead-screw.
• Test-area height up to 250 mm enables testing of larger workpieces.
• Visual and audible signals when specified tolerances exceeded and during pre-load setting.
• Comprehensive equipment included in delivery.
• RS232C interface as standard.
• Special specimen holders/grips to suit individual customer requirements.