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Illustrative Test Results - NOISE
Please note: Decibel ratings are logarithmic. A ten (10) db increase is 10 times louder. A twenty (20) db increase is one hundred times louder.
Example: A pneumatic tool that changes from 67 db to 89 db is 120 times louder.
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Noise testing conducted by Acoustics Pty Ltd (in Australia). Your results may vary, depending upon conditions, equipment, and usage.
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With E.A.R.S. |
Without E.A.R.S. |
DIFFERENCE |
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Impact Wrench |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
| Free Running |
At operator’s ear |
69.1 |
74.4 |
84.2 |
93.1 |
97.0 |
105.8 |
(24.0) |
(22.6) |
(21.6) |
| 1 metre away from operator’s hand |
68.1 |
70.2 |
82.6 |
96.8 |
99.7 |
111.9 |
(28.7) |
(29.5) |
(29.3) |
| Working |
Tightening wheel nuts – at operator’s ear |
88.2 |
97.5 |
119.2 |
92.7 |
99.9 |
120.5 |
(4.5) |
(2.4) |
(1.3) |
| Tightening wheel nuts – 1 metre from operator’s hand |
80.4 |
91.6 |
108.0 |
86.9 |
95.5 |
112.4 |
(6.5) |
(3.9) |
(4.4) |
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With E.A.R.S. |
Without E.A.R.S. |
DIFFERENCE |
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1800 rpm Screw Gun |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
| Free Running |
At operator’s ear |
70.8 |
73.5 |
87.8 |
89.3 |
93.8 |
102.7 |
(18.5) |
(20.3) |
(14.9) |
| 1 metre away from operator’s hand |
72 |
73.8 |
89.1 |
94 |
97.6 |
106.3 |
(22.0) |
(23.8) |
(17.2) |
| Working |
Self tapping screws into pine – at operator’s ear |
76.8 |
85.4 |
98.5 |
90.4 |
97.5 |
110.5 |
(13.6) |
(12.1) |
(12.0) |
| Self tapping screws into pine – 1 metre from operator’s hand |
76.8 |
88.5 |
102.2 |
91.9 |
99.3 |
110.4 |
(15.1) |
(10.8) |
(8.2) |
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With E.A.R.S. |
Without E.A.R.S. |
DIFFERENCE |
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3/8” Drill |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
| Free Running |
At operator’s ear |
71.4 |
75.6 |
89.3 |
86.1 |
87.9 |
99.1 |
(14.7) |
(12.3) |
(9.8) |
| 1 metre away from operator’s hand |
61.8 |
65.1 |
81 |
88.6 |
91.1 |
101.6 |
(26.8) |
(26.0) |
(20.6) |
| Working |
Drilling into aluminium – at operator’s ear |
77.6 |
87.3 |
100.5 |
88.2 |
97 |
112.9 |
(10.6) |
(9.7) |
(12.4) |
| Drilling into aluminium– 1 metre from operator’s hand |
79.5 |
89.7 |
103.4 |
89 |
97.9 |
113.9 |
(9.5) |
(8.2) |
(10.5) |
| Drilling into 25mm pine– at operator’s ear |
76.7 |
85.7 |
98.5 |
88.2 |
91.1 |
103.1 |
(11.5) |
(5.4) |
(4.6) |
| Drilling into 25mm pine– 1 metre from operator’s hand |
76.1 |
83.8 |
95.5 |
87.2 |
90.2 |
101.6 |
(11.1) |
(6.4) |
(6.1) |
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With E.A.R.S. |
Without E.A.R.S. |
DIFFERENCE |
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150mm Random Orbital Sander |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
LAeq dB(A) |
SPLF Max dB(A) |
C Peak dB(C) |
| Free Running |
At operator’s ear |
83.7 |
86.8 |
98.3 |
90.5 |
95.4 |
108 |
(6.8) |
(8.6) |
(9.7) |
| 1 metre away from operator’s hand |
81.4 |
84.3 |
96.7 |
85.1 |
91.6 |
103.1 |
(3.7) |
(7.3) |
(6.4) |
| Working |
Sanding 25mm pine – at operator’s ear |
86.6 |
88.7 |
100.6 |
88.9 |
90.8 |
103.9 |
(2.3) |
(2.1) |
(3.3) |
| Sanding 25mm pine – 1 metre away from operator’s hand |
82.8 |
84.4 |
96.9 |
87.7 |
89.5 |
101.2 |
(4.9) |
(5.1) |
(4.3) |
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