Made in India
RASN-D
Digital Rockwell Hardness Tester
Digital Rockwell tester with 0.1 Rockwell resolution, adjustable dwell time and test limits, USB export of results as CSV, PC software and built-in thermal printer. Manual load selection and hand-operated loading keep the machine simple and durable for shop-floor use.
The RASN-D is the digital Rockwell hardness tester in the Eklavya Techno Solutions range, built in Ichalkaranji, India for quality departments that need documented, 0.1 Rockwell resolution results but prefer the simplicity of a hand-operated load cycle. The operator selects the scale, dwell time and high/low limits on the digital panel, raises the specimen until the SET indication confirms the 10 kgf minor load, and applies the 60, 100 or 150 kgf major load with the lever. The panel times the dwell, prompts for unloading and displays the hardness, then stores it with date, time and scale.
Because the loading is manual and the load selection is mechanical, there are fewer parts to wear or fail than on a motorised machine, and the tester runs from a single-phase 230 V supply through a 1 A fuse. Results are exported as CSV files over USB, printed on the built-in thermal printer, or handled in the supplied PC software for reports. The RASN-D covers scales HRA to HRK, offers 230 mm test height and 133 mm throat depth, and is delivered with flat and V-groove tables, diamond and 1/16 inch ball indenters and certified Rockwell C and B test blocks.
Major load (total test force): 588.4, 980.7, 1471 N (60, 100, 150 kgf)
IS 1586 (Part 2) – Rockwell hardness test – verification and calibration of testing machines
ASTM E18 – Standard test methods for Rockwell hardness of metallic materials
ISO 6508-2 – Metallic materials – Rockwell hardness test – verification and calibration of testing machines and indenters
RASN-D series (digital): models compared side by side, current model highlighted.
| Parameter | RASN-D | RASN-250-D | RASN-Twin-D |
|---|---|---|---|
| Type | Digital Rockwell, manual loading | Digital Rockwell cum Brinell, manual loading | Digital Rockwell cum Superficial, manual loading |
| Major load (total test force) | 588.4, 980.7, 1471 N (60, 100, 150 kgf) | 588.4, 980.7, 1471, 1839, 2452 N (60, 100, 150, 187.5, 250 kgf) | 147.1, 294.2, 441.3, 588.4, 980.7, 1471 N (15, 30, 45, 60, 100, 150 kgf) |
| Minor load (preliminary force) | 98.07 N (10 kgf) | 98.07 N (10 kgf) | 29.42, 98.07 N (3, 10 kgf) |
| Scales | HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH, HRK | Rockwell A to K; Brinell HBW 2.5/187.5, 2.5/250 | Rockwell A to K; Superficial 15N, 30N, 45N, 15T, 30T, 45T |
| Resolution | 0.1 Rockwell | 0.1 Rockwell | 0.1 Rockwell / 0.1 Rockwell Superficial |
| Display | Digital | Digital | Digital |
| Output | Built-in thermal printer, USB (CSV), PC software | Built-in thermal printer, USB (CSV), PC software | Built-in thermal printer, USB (CSV), PC software |
| Max. test height | 230 mm | 230 mm | 230 mm |
| Depth of throat | 133 mm | 133 mm | 133 mm |
| Net weight (approx.) | 70 kg | 75 kg | 75 kg |
| Machine dimensions (L × W × H) | L-500 × W-170 × H-640 mm | L-500 × W-170 × H-640 mm | L-500 × W-170 × H-640 mm |
| Power supply | 230 V AC, 50 Hz, 1 phase (1 A fuse) | 230 V AC, 50 Hz, 1 phase (1 A fuse) | 230 V AC, 50 Hz, 1 phase (1 A fuse) |
| Standard tables | 50 mm dia flat table; 38 mm dia table with V-groove for 6–45 mm round jobs | 50 mm dia flat table; 38 mm dia table with V-groove for 6–45 mm round jobs | 50 mm dia flat table; 38 mm dia table with V-groove for 6–45 mm round jobs |
| Indenters supplied | Diamond indenter Rockwell RA; 1/16" ball indenter | Diamond indenter Rockwell RA; 1/16" ball; 2.5 mm ball | Diamond indenters Rockwell RA and Rockwell SF; 1/16" ball |
| Test blocks supplied | Rockwell C and Rockwell B test blocks | Rockwell C, Rockwell B and HBW 2.5/187.5 test blocks | Rockwell C, Rockwell B and HR 30 N test blocks |
| Optional | 5 mm step inserts; jack rest for long and heavy jobs; PC software | 5 mm step inserts; jack rest for long and heavy jobs; PC software | 5 mm step inserts; jack rest for long and heavy jobs; PC software |
| Brinell testing | — | Brinell 187.5 / 250 kgf selected manually with the matching ball indenter; impression diameter measured with the supplied Brinell microscope (no Brinell scale on the display) | — |
Resolution improves from 1 to 0.1 Rockwell units, dwell time is timed by the panel rather than by the operator, and high/low limits can be set so each reading is judged automatically. Every result is stored with date, time and scale and can be printed on the built-in thermal printer, exported as CSV over USB or collected in the PC software, which a dial machine cannot do.
Yes. The major load is selected by hand and applied with the loading lever exactly as on the dial machine; only the measurement, timing and record keeping are electronic. If you want the load, dwell and unload cycle to run by motor at the press of a key, the RSNE motorised model uses the same panel functions with an automatic cycle.
All nine regular Rockwell scales HRA to HRK with 60, 100 and 150 kgf major loads and a 10 kgf minor load. In practice that means HRC on hardened and tempered steels, dies and tool steel using the supplied diamond indenter, and HRB on softer steels, brass, bronze and aluminium using the supplied 1/16 inch ball. Parts up to 230 mm high and 133 mm deep fit under the indenter.
Three ways: print a ticket on the built-in thermal printer, plug in a USB drive and export the stored readings as a CSV file that opens directly in Excel, or connect the tester to a computer and use the ETS PC software for reports. Date, time, hardness value and scale are recorded for every test.
The RASN-D is built and verified to IS 1586 (Part 2), ASTM E18 and ISO 6508-2. It is supplied with certified Rockwell C and Rockwell B test blocks for verification at installation and daily checks; ETS provides calibration with traceable certificates and annual maintenance contracts across India.
A single-phase 230 V AC, 50 Hz supply protected by a 1 A fuse is sufficient. The machine comes with a 50 mm flat table, a 38 mm V-groove table for 6 to 45 mm rounds, diamond RA and 1/16 inch ball indenters, Rockwell C and B test blocks, telescopic screw sleeves, clamping device, cover and the thermal printer. Step inserts and a jack rest are optional.
