Hitachi WH 14DM, Технические данные и руководство по обслуживанию

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7-3. Number of Screws Driven
7-3-1. Per-charge working capacity comparisons
Test data on the number of screws which can be driven per battery charge by the new model vs. the previous
models are shown in the table below. 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.
Battery
Tightening condition
Model
HITACHI
WH 14DM
Wood screw 4.0 mm dia. x 50 mm
(5/32" x 1-31/32") (soft wood)
Wood screw 4.2 mm dia. x 90 mm
(11/64" x 3-3/64") (hard wood)
Wood screw 5.3 mm dia. x 120 mm
(1/64" x 4-23/32") (hard wood)
Machine screw
(M8 x 16 mm)
Note 1) The Model WH 14DM is equipped with the larger hammer and the higher power motor for the higher
tightening speed. Although the higher tightening speed is realized, the Model WH 14DM has the
following disadvantage.
High startup current
The Model WH 14DM consumes higher power than C for driving a short or machine screw because it
requires high startup current. Thus the number of machine screws driven per charge is different as
shown above.
HITACHI
WH 12DH
EB 1230H
860
175
70
1,920
C
BH 1420
690
164
71
1,380
EB 1430H
950
225
95
1,890
EB 14B
630
150
65
1,260
EB 1220BL
570
115
45
1,230