RSD Series
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Rockwell hardness tester RSD 


Semi-automatic hardness testers for Rockwell, Superficial Rockwell, Brinell and Vickers hardness test methods in compliance with ASTM and ISO standards. RSD Series are bench hardness testers for tough or lab applications. Rockwell and Brinell HBTW hardness values with absolute accuracy (better than 0.5 %) in every condition, accurate measurements even on the first test will eliminate the need for repeated tests. Load forces are applied through a dynamometric load cell which eliminates problems associated with dead weight systems on traditional testers. Digital durometers with LCD screen, user friendly interface, real time statistics, graphs and large archive storage. Hardness testing on all metals: iron, steel, tempered steel, cast iron, brass, aluminum, copper and metal alloys. Heat treatment, hardening, nitriding, cementation and hardfacing.
Rockwell hardness tester 206 RSD
206 RSD
  Rockwell hardness test on metal
  Rockwell hardness tester 330 RSD
330 RSD
  Rockwell hardness test on springs
  Rockwell hardness tester 903 RSD
903 RSD
  Rockwell hardness test on big gears

Load forces: from 3 to 187,5 kgf (From 29,42 to 1839 N)

Rockwell ISO 6508 / ASTM E-18: HRA - HRB - HRC - HRD - HRF - HRG - HRL - HRM - HRR  /  HRN - HRT

Brinell HBWT ISO 6506 / ASTM E-10: HB 30 - HB 10 - HB 5 MPa (F/D2)

Vickers ISO 6507 / ASTM E-384 (Only indentation): HV3 - HV10 - HV15 - HV30 - HV60 - HV100


Manual drive and automatic cycle

Rockwell hardness test measureJust pull the START lever and the hardness tester's head moves down to make contact with the sample's surface, locking it. The hardness test cycle will automatically begin in automatic succession without breaching a phase. Within seconds results appear.

The AFFRI System

Hardness tester Closed LoopLoad forces are generated by a dynamometric load cell which assures long term accuracy and eliminates problems associated with dead weight systems on traditional testers. Results are not affected by any structural deflection, misalignment or vibration.

Repeatability and reproducibility (R&R)

Hardness tester repeatability and reproducibilityAccurate measurements on the first test, even in extreme conditions, will eliminate the need for repeated tests. The R&R data is at the top of its class.

Indenter stroke

Rockwell hardness tester indenter strokeWhen testing unstable samples or deflecting parts, the AFFRI System will follow the sample without losing contact thanks to its 50 mm stroke for indenter and clamping hood. Easy and fast hardness measurements on pieces with different thicknesses without acting on tester head or elevating screw.

Clamping system (Pat. AFFRI)

Hardness tester clamping sistemSecure contact with the specimen is always maintained, even in the unlikely event of any specimen movement during the operation cycle. The clamping system assures perfect stability of any test piece throughout the test cycle, even if it's oiled, rusty or dirty.

Moving tester's head

Hardness tester vertical strokeTotal of 700 mm of vertical stroke. The moving tester's head permits easy measurements on large pieces, reaching points at the top of the sample that would be difficult to be measured with common testers.

Large base

Hardness tester wide workholderThe 330 RSD’s wide work table base is capable of bearing masses beyond 1000 kg which allows for steady hardness measurements on bulky or irregular pieces It also offers a comfortable working base for small pieces.

Optional table for ring shape samples

Hardness tester base for ring shape samplesOptional interchangeable base for hardness testing on external ring shape tubes, cylindrical surfaces and various samples diameter.

Software RSD

The software controls the whole instrument during the entire cycle avoiding operator errors:
Rockwell softwareSet of the hardness test method
Rockwell software1Measurement settings
Rockwell software2Storable and printable statistics
Rockwell Integral software3Results, averages and conversions


Portable solution - AFFRI® RSD MAG

Durometro portatile durezza Rockwell RSDMAG
AFFRI® RSD MAG Portable hardness tester with magnetic clamping base for Rockwell, Brinell and Vickers hardness test methods. The first portable hardness tester that conforms to ASTM E-18 E-10 E384 and ISO 6508 6507 6506 international standards. It is completely uninfluenced by direction so that it is operative up to 360° degrees of positioning, even upside down. It is not affected by any external source of vibration, and it does not need to be leveled. Safe clamping on any surface, from round to flat, with self-alignment of the indenter with the measurement axis. This hardness tester ensures the highest accuracy and repeatability at every measurement.
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Tecnical features


Durometro durezza Rockwell 250 MRS Durometro durezza Rockwell 3332 MRS Durometro durezza Rockwell 3332/3302 MRSA
206 RSD / RS-SD
330 RSD / RS-SD
903 RSD / RS-SD
EN-ISO 6506-2 / EN-ISO 6507-2 / EN-ISO 6508-2 / ASTM E-18 / ASTM E-10 / ASTM E384/ JIS
X-Y Table
330x390 mm
Indenter and clamping-hood stroke
0/50 mm
Vertical head stroke
0/300 mm
0/700 mm (More on request)
Elevating screw stroke
0/215 mm
Depth capacity
190 mm
RSD: 98,1 N (10 kgf)
RS-SD: 29,4 (3 kgf)
Force range
Rockwell: 588.4 - 980.7 - 1471 N (60 - 100 - 150 kgf)
Vickers (Only indentation): 98.07 - 980.7 N (10 - 100 kgf)
Brinell (On request): 98.07 - 612.9 - 1226 - 1839 N - On request 2452 N (10 - 62.5 - 125 - 187.5 kgf - On request 250 kgf)
Superficial Rockwell: 147.1 - 294.2 - 441.3 N (15 - 30 - 45 kgf)
Vickers (Only indentation): 29.42 - 294.2 N (3 - 30)
Brinell (On request): 153.2 - 294.2 - 306.5 N (15.6 - 30 - 31.2 kgf)
Feasible tests
Rockwell: HRC - HRA - HRD - HRB - HRF - HRG - HRL - HRM - HRR
Vickers (Only indentation): HV10 - HV100
Brinell (On request): HB30 - HB10 - HB5 MPa (F/D2)
Superficial Rockwell: HRN - HRT
Vickers (Only indentation): HV3 - HV30
Brinell (On request): HB30 - HB10 - HB5 MPa (F/D2)
Load accuracy
Better than 0.5%

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