Hitachi WH 12DH Technical Data And Service Manual page 21

7-4-2. Tightening Time and Number of Screws Driven Per Battery Charge
(pcs.)
800
700
600
500
400
300
200
100
0
0 1
Fig. 7 Tightening time and number of
screws tightened
EB 12B
2 3 4 5
Tightening time
Fig. 7 shows the relationship between the
tightening time and the number of screws which
can be tightened in a single battery charge in the
case of the EB 12B. (Tightening time is defined as
the period of time elapsed from the
commencement of the screw tightening operation
to the completion. As it can be seen, when the
tightening time is prolonged, the number of screws
which can be tightened per charge is decreased.)
Please note that the data below are intended for
general reference only, as the number of screws
which can be tightened per charge will vary slightly
depending on screw tightening conditions, screw
sizes, ambient temperatures and the charging
capacity of the battery.
(sec)
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