Model No. 900-331
A perfect performer, ruggedly engineered, the 900-331 Rockwell hardness tester delivers unmatched repeatability in all standard Rockwell scales. This hardness tester utilizes a motor driven system for control of the major test force application. State of the art design and dynamic precision provide highly sensitive and accurate readings. Conforming to ASTM E-18 standards, this hardness tester is suited for tool rooms, workshops, laboratories, and inspection labs. Lifetime Free technical support is included with all of our hardness testers.
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Features:
- Direct analog dial reading
- Advanced design, easy to operate
- Engineered to obtain highly sensitive and accurate readings
- Conforms to ASTM E-18
Perfect for laboratories, workshops, tool rooms, inspection labs, etc.
Specifications:
| Minor Load |
10Kgf |
| Major Load |
60Kgf, 100Kgf, 150Kgf |
| Test Force Application |
Dead Weight |
| Test Force Control |
Hydraulic Dashpot System |
| Results Display |
Analog Dial Gage |
| Vertical Capacity |
6.7 in. |
| Throat Depth |
6.6 in. |
| Height |
30.0 in. |
| Width |
8.50 in. |
| Depth |
20.0 in. |
| Shipping Weight |
242 lbs. |
Accessories:
- C-scale Diamond Indentor
- 1/16" Ball Indentor
- 3- HRC Test Blocks
- 1- HRB Test Block
- 1-HRA Test Block
- Test Table 5.87" (150mm)
- Flat Anvil 2.5" (63mm)
- Spot Anvil .38: (10mm)
- Std. Vee Anvil
- Accessory Case
- Dust Cover
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| Scale Symbol |
Indenter Type
Ball dimensions indicate diameter |
Preliminary Force
N (kgf) |
Total Force
N (kgf) |
Typical Application |
| A |
Spheroconical Diamond |
98.07 (10) |
588.4 (60) |
Cemented carbides, thin steel and shallow case hardened steel |
| B |
Ball 1/16" (1.588mm) |
98.07 (10) |
980.7 (100) |
Copper alloys, soft steels, alum. Alloys, malleable iron, etc. |
| C |
Spheroconical Diamond |
98.07 (10) |
1471 (150) |
Steel, hard cast irons,pearltic malleable iron, titanium, deep case hardened steel & other material harder than HRB 100 |
| D |
Spheroconical Diamond |
98.07 (10) |
980.7 (100 |
Thin steel and medium case hardened steel and pearlitic malleable iron |
| E |
Ball - 1/8" (3.175mm) |
98.07 (10) |
980.7 (100 |
Cast iron, aluminum&magnesium alloys and bearing metals |
| F |
Ball - 1/16" (1.588mm) |
98.07 (10) |
588.4 (60) |
Annealed copper alloys, and thin soft sheet metals |
| G |
Ball - 1/16" (1.588mm) |
98.07 (10) |
1471 (150) |
Malleable irons, copper-nckel-zinc and cupronickel alloys |
| H |
Ball - 1/8" (3.175mm) |
98.07 (10) |
588.4 (60) |
Aluminum, zinc and lead |
| K |
Ball - 1/8" (3.175mm) |
98.07 (10) |
1471 (150) |
Bearing metals and other very soft or thin materials. Use smallest ball and heaviest load that does not give anvil effect |
| L |
Ball - 1/4" (6.350mm) |
98.07 (10) |
588.4 (60) |
| M |
Ball - 1/4" (6.350mm) |
98.07 (10) |
980.7 (100) |
| P |
Ball - 1/4" (6.350mm) |
98.07 (10) |
1471 (150) |
| R |
Ball - 1/2" (12.70mm) |
98.07 (10) |
588.4 (60) |
| S |
Ball - 1/2" (12.70mm) |
98.07 (10) |
980.7 (100) |
| V |
Ball - 1/2" (12.70mm) |
98.07 (10) |
1471 (150) |
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