| Application
range of Impact Device |
D
type general pieces DC type for hole or
Cylinder DL type for long and marrow channel
or hole |
D+15
type for measuring in grooves or recessed
surface |
C
type for measuring light and small piece and
surface hardness layer |
G
type for measuring heavy and rough cast and
forged pieces |
| Impact
Device |
D/DC/DL |
D=15 |
C |
G |
| Impacting
energy |
11mj |
11mj |
2.7mj |
90mj |
| Mass
of impact body |
5.5g/5.5g/7.3g |
7.8g |
3.0g |
20g |
| Hardness
of spherical test tip |
1600HV |
1600HV |
1600HV |
1600HV |
| Diameter
of spherical test tip |
3mm |
3mm |
3mm |
5mm |
| Material
of spherical test tip |
Tungsten
carbide |
Tungsten
carbide |
Tungsten
carbide |
Tungsten
carbide |
| Diameter
of Impact Device |
20mm |
20mm |
20mm |
30mm |
| Length
of Impact Device |
147/86mm/75mm |
162mm |
141mm |
254mm |
| Weight
of Impact Device |
50g |
80g |
75g |
250g |
| Max.
hardness of workpiece |
940/940/950HV |
940HV |
1000HV |
650HB |
| Average
surface roughness of the test piece |
Ra:
1.6 um |
Ra:
1.6 um |
Ra:
0.4 um |
Ra:
6.3 um |
| Min.
weight of test piece |
Direct
measuring |
5kg |
5kg |
1.5kg |
15kg |
| on
stable support |
2kg |
2kg |
0.5kg |
5kg |
| with
compact coupling |
0.05kg |
0.1kg |
0.02kg |
0.5kg |
| Min.
thickness of test piece |
Compact
coupling |
5mm |
5mm |
1mm |
10mm |
| Min.
case hardened depth |
0.8mm |
0.8mm |
0.2mm |
1.2mm |
Size
of indentation of spherical test tip |
| Hardness
300 HV |
Indentation
diameter |
0.54mm |
0.54mm |
0.38mm |
1.03mm |
| Indentation
depth |
24
um |
24
um |
12
um |
53
um |
| Hardness
600 HV |
Indentation
diameter |
0.54mm |
0.54mm |
0.32mm |
0.90mm |
| Indentation
depth |
17
um |
17
um |
8
um |
41
um |
| Hardness
800 HV |
Indentation
diameter |
0.35mm |
0.35mm |
0.35mm |
|
| Indentation
depth |
10
um |
10
um |
7
um |
|
