Name: CISAM-ERNST AT350 Automatic Rockwell Hardness Tester
Brand: CISAM-ERNST

Automatic Rockwell testing for large parts and Jominy tests

The AT350 is an automatic Rockwell hardness tester for fast, repeatable testing. It is available in MOD R for Rockwell and MOD SR for Super Rockwell testing.

The Ernst spring loading system makes the test insensitive to bending or deflection of the workpiece. The machine suits large components and is especially suited to Jominy testing.

The AT350 can be integrated into production lines, supports data communication through USB and optional industrial interfaces, and is designed for harsh industrial environments and continuous quality control.

MOD R and MOD SR

Rockwell

MOD R

Rockwell loads: 60 / 100 / 150 kgf
Brinell loads: 62.5 / 125 / 187.5 kgf
Preload: 10 kgf
Scales: HRC, HRA, HRB, HRD, HRF, HRG, HB/30
Min. diameter: 6 mm

Super Rockwell

MOD SR

Rockwell loads: 15 / 30 / 45 kgf
Brinell loads: 62.5 / 125 / 187.5 kgf
Preload: 3 kgf
Scales: HR15N, HR30N, HR45N, HR30T, HR45T
Min. diameter: 4 mm

Where the AT350 is used

AT350 with a sliding clamping fixture holding a bar specimen under the indenter

Jominy testing

Hardness testing along Jominy test specimens.

AT350 testing a large cast engine block with the touchscreen beside the head

Large components

Testing large components such as castings.

AT350 testing a camshaft with the result shown on the touchscreen

Production quality control

Fast Rockwell checks in continuous quality control.

Batch control

Repeated testing of series parts with tolerance settings.

AT350 indenter testing a slotted cylindrical metal part on the anvil table

Metallic parts

Rockwell and Super Rockwell testing of metal parts.

Heat treatment inspectionIn-line hardness testingAutomated hardness inspectionHarsh industrial environmentsIndustry 4.0 data collection

Automatic testing and connectivity

Testing

Automatic load application, 2-second test cycle.
Ernst spring loading system, not affected by bending or deflection.
Suited to production-line integration and Jominy testing.

Capacity

Maximum measurable height 415 mm.
Optional column extensions +300 mm / +500 mm.
Maximum depth 210 mm.
Minimum diameter 6 mm (Rockwell) and 4 mm (Super Rockwell).

Touchscreen functions

Scale selection, load time, minimum thickness and mm/inch setting.
Round correction, calibration, tolerances, indenter type and language.
File management, archive, statistics, conversion, sequence and password protection.

Interfaces

2 USB ports and 2 free slots.
Optional Modbus-TCP, RS232 and Profibus.
Power supply 100–240 V.

Why it fits production testing

Fast testing. A 2-second cycle, faster than common load-cell systems.

Less operator influence. Automatic operation reduces the operator's effect on results.

Consistent results. Readings hold even when the part bends or deflects.

Large parts and Jominy. Suited to large parts, production-line testing and Jominy tests.

Data integration. Optional interfaces support Industry 4.0 and production data.

Harsh environments. Designed for dust, humidity, vibration and temperature changes.