download the product sheet
| Impact device |
D/DC/DL
|
D+15
|
C
|
G
|
E
|
|
Impacting energy
|
11 Nmm
|
11Nmm
|
2.7Nmm
|
90Nmm
|
11Nmm
|
|
Mass of impacting body
|
5.5g/5.5g/7.3g
|
7.8g
|
3.0g
|
20g
|
5.5g
|
|
Hardness of spherical test tip
|
1600HV
|
1600HV
|
1600HV
|
1600HV
|
5000HV
|
|
Diameter of spherical test tip
|
3mm
|
3mm
|
3mm
|
5mm
|
3mm
|
|
Material of spherical test tip
|
Tungsten carbide
|
Tungsten carbide
|
Tungsten carbide
|
Tungsten carbide
|
Diamond
|
|
Diameter of impact device
|
20mm
|
20mm
|
20mm
|
30mm
|
20mm
|
|
Length of impact device
|
147/86mm/202mm
|
162mm
|
141mm
|
254mm
|
155mm
|
|
Weight of impact device
|
75/50g
|
80g
|
75g
|
250g
|
80g
|
|
Max. hardness of the test piece
|
940/940/950 HV
|
940HV
|
1000HV
|
650HB
|
1200HV
|
|
Average surface roughness of the test piece
|
Ra :2mm
|
Ra :2mm
|
Ra :0.4mm
|
Ra :7mm
|
Ra :2mm
|
|
Min. weight of test piece
|
|
|
|
|
|
|
Direct measuring
|
5kg
|
5kg
|
1.5kg
|
15kg
|
5kg
|
|
Stable support
|
2kg
|
2kg
|
0.5kg
|
5kg
|
2kg
|
|
Compact coupling
|
0.1kg
|
0.1kg
|
0.02kg
|
0.5kg
|
0.1kg
|
|
Min. thickness of test piece
|
|
|
|
|
|
|
Compact coupling
|
3mm
|
3mm
|
1mm
|
10mm
|
3mm
|
|
Min. case hardened depth
|
0.8mm
|
0.8mm
|
0.2mm
|
1.2mm
|
0.8mm
|
Size of indentation of spherical test tip: |
|
Hardness
300HV
|
Indentation diameter |
0.54mm
|
0.54mm
|
0.38mm
|
1.03mm
|
0.54mm
|
|
Indentation depth
|
24mm
|
24mm
|
12mm
|
53mm
|
24mm
|
|
Hardness
600HV
|
Indentation diameter
|
0.54mm
|
0.54mm
|
0.32mm
|
0.90mm
|
0.54mm
|
|
Indentation depth
|
17mm
|
17mm
|
8mm
|
41mm
|
17mm
|
|
Hardness
800HV
|
Indentation diameter
|
0.35mm
|
0.35mm
|
0.35mm
|
___
|
0.35mm
|
|
Indentation depth
|
10mm
|
10mm
|
7mm
|
___
|
10mm
|
|
Application range of impact devices
|
D type for measuring general pieces
DC type for hole or cylinder
DL type for long and narrow channel or hole
|
D+15 type for measuring in grooves or recessed surfaces
|
C type for measuring light and small piece and surface hardened layer
|
G type for measuring heavy and rough cast and forged piece
|
E type for very hard material
|
