Dust Collection Efficiency Comparison - Hitachi DH 24PD3 Technical Data And Service Manual

6-3. Dust Collection Efficiency Comparison

Dust collection efficiency varies considerably depending on the work conditions. Use the factory test results
shown in Fig. 2 for comparison purpose only. Figure 2 shows a comparison of dust collection efficiency based on
the drilling of 50 mm (2") holes into wall material with a dia. 14.5 mm (9/16") drill bit.
[Test conditions]
Direction
Pushing force
Test material
: Drilling into wall
: 98 N (10 kgf)
: Concrete panel with a compression strength of 2,352 N/cm
Fig. 2
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2 (240 kgf/cm 2 )