Hitachi SP 18SB, Technical Data And Service Manual

--- 2 ---

4-1. Selectable between the Stepless Variable Speed Control and the Constant Speed Control

       (Model SP 18VB only)

The Model SP 18VB is equipped with a stepless variable speed dial and can change the number of revolutions

according to a use. See the table below for the dial setting.

Fig. 2

Dial

Fig. 1

Fig. 3

4-2. Completely Novel Design and Comfortable Grip Handle Covered with Elastomer and Rubber Side

        Handle

The Models SP 18VB and SP 18SB are of a completely novel design. In addition, the grip handle is covered with

elastomer and the side handle is made of rubber. These handles are not only comfortable but also nonslip and

easy to operate.

Dial number Number of revolutions/min.

1
2
3
4
5
6

600
800

1,150
1,500
1,850
2,000

* The above table is provided as a rough guide for speed setting. The actual speed may vary slightly.

The Model SP 18VB is also equipped with a constant speed control function and can operate stably with minimum

speed reduction even if a load is applied.

4-3. Highest Power Motor in the Class and Highly Resistant to Overload (Model SP 18VB only)

The Model SP 18VB is highly resistant to overload and offers high power output up to 1,200 W thanks to the high-

power motor. The cooling efficiency is improved by the adoption of the Hitachi's original two-part coil in the stator

and the fan newly developed from 3D digital analysis technologies in the armature. The Model SP 18VB is highly

resistant to overload while it offers high-power performance.

Following table shows the overload durability obtained by measuring the grinding torque when the temperature

rise of the stator coil is 200 (K) as a guide. It is evident that the Model SP 18VB is superior to C in both the

maximum output and the overload durability.

Maker

•

Model

HITACHI

Grip handle

Side handle

C

SP 18VB/SP 18SB

Soft (Elastomer)
Soft (Rubber)

SP 18/SP 18SA

Item

Hard (Aluminum/resin)
Hard (Resin)

Hard (Resin)
Hard (Resin)

The above data was measured when setting the dial scale to the maximum.

Maker

•

Model

HITACHI

Maximum output (W) {hp}
Overload durability (N

•

m) {ft-lbf}

Overload durability ratio (Compared with C)

C

SP 18VB

1,200 {1.61}

7.15 {5.27}

1.38

Item

1,000 {1.34}

5.19 {3.82}

1.00

Fig. 4