Made in India
RASN
Rockwell Hardness Testing Machine (dial)
Dial-type Rockwell hardness tester with manual load selection and an automatic zero-setting dial gauge. The powder-coated body, hardened elevating-screw bush and precision-bearing plunger give consistent, reliable accuracy over a long machine life for regular Rockwell scales on steels and non-ferrous metals.
The RASN is the entry point to the Eklavya Techno Solutions Rockwell range: a dial-reading, hand-operated hardness tester built in Ichalkaranji, India for heat-treatment shops, forging units, machine shops and training laboratories that want dependable Rockwell readings without any electronics. The Rockwell principle is straightforward. A 10 kgf minor load seats the indenter, a major load of 60, 100 or 150 kgf is applied and released, and the additional depth of penetration is converted into a hardness number that is read straight off the auto-zeroing dial. All nine regular scales from HRA to HRK are covered by pairing the load selector with the diamond and 1/16 inch ball indenters.
Mechanically the RASN is designed for a long working life. The elevating screw runs in a hardened and ground bush that limits lateral play to under 0.05 mm at full height, the loading plunger rides on precision bearings, and a dash-pot controls load application so every cycle is smooth and repeatable. With 230 mm test height and 133 mm throat depth it accepts most bar stock, gears, dies and heat-treated components, and it ships with flat and V-groove tables, Rockwell C and B test blocks, a clamping device and a machine cover.
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 series (dial): models compared side by side, current model highlighted.
| Parameter | RASN | RASNB | RASN-Twin |
|---|---|---|---|
| Type | Rockwell, dial readout, manual cycle | Rockwell cum Brinell, dial readout, manual cycle | Rockwell cum Superficial, dial readout, manual cycle |
| 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 | 1 Rockwell | 1 Rockwell | 1 Rockwell |
| 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 |
| 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 | 5 mm step inserts; jack rest for long and heavy jobs | 5 mm step inserts; jack rest for long and heavy jobs |
| 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) | — |
The RASN covers the nine regular Rockwell scales HRA, HRB, HRC, HRD, HRE, HRF, HRG, HRH and HRK using major loads of 60, 100 and 150 kgf with a 10 kgf minor load. A diamond indenter (Rockwell RA) and a 1/16 inch ball indenter are supplied, which gives you the common HRC and HRB scales straight out of the box; ask ETS for the matching ball indenter if you need the scales that use a larger ball.
HRC on the diamond indenter is the standard scale for hardened and tempered steels, dies, gears and tool steel; HRB with the 1/16 inch ball suits annealed steels, brass, bronze and aluminium alloys. The 230 mm test height, 133 mm throat and V-groove table for 6 to 45 mm rounds take most shafts, rings, castings and cut samples used in Indian heat-treatment and machine shops.
All three share the same dial-reading frame and manual load cycle. The RASN tests regular Rockwell scales only. The RASNB adds 187.5 and 250 kgf loads and a 2.5 mm ball for Brinell testing, with the impression read on a supplied microscope. The RASN-Twin adds the 15, 30 and 45 kgf superficial loads and a 3 kgf minor load for case-hardened and thin parts. Choose by the scales you actually need.
The machine is built and verified to IS 1586 (Part 2), ASTM E18 and ISO 6508-2, the Indian, American and international standards for Rockwell hardness testing machines. Test reports produced on it are therefore acceptable to customers and auditors who specify any of these standards for incoming or in-process hardness inspection.
No. The RASN is a purely mechanical dial tester with a 1 Rockwell resolution readout, which is exactly why it is so robust and inexpensive to maintain. If you need 0.1 Rockwell resolution, dwell timing, USB export of results as CSV, PC software or a built-in thermal printer, look at the RASN-D digital version of the same machine.
The RASN is supplied with a 50 mm flat table, a 38 mm V-groove table, the diamond and 1/16 inch ball indenters, certified Rockwell C and Rockwell B test blocks, a clamping device and a cover. Calibration is done with the certified test blocks at installation, and the same blocks let you check the tester each day. ETS offers calibration with traceable certificates and AMC support across India.
