Hitachi CL 14 DSL Инструкция по эксплуатации онлайн [12/34] 167

-10-

(6) Ensure that the portion cutoff of the

stud is at least 10 mm in length.

As the blade portion of the cutter is very

thin, if only one or two threads of the

cutter are engaged with the threads of

the stud as illustrated in Fig. 3, the

excessive concentration of load on the

blade portion will cause it to break after

only a few cutting operations. The length

of stud cutoff should be at least 10 mm.

Instruct customers to confirm that all of

the threads of the cutter engage the

threads of the stud during cutting.

(7) Care should be exercised when performing

cutting in narrow places.

For example, in building construction work,

studs that are used to hang ducts are often

fitted with L-shaped angles. Instruct the customers to ensure that there is a clearance of

at least 8 mm between the stud and the angle when 25 mm or 30 mm L-shaped angles

are used as illustrated in Fig. 4 before starting the cutting operation. If the clearance is

less than 8 mm, bracket (A) will come in contact with the side surface of the angle,

preventing proper engagement of the threads of the cutters and the threads of the stud,

and causing damage to the threads of the stud and/or the cutter blade.

Also, since the minimum cutting length of a stud is 14 mm from the surface of the nut,

the stud can be cut off at a point 5 mm within the tip of the angle in the case of a 30 mm

L-shaped angle, and approximately even with the tip of the angle in the case of a 25 mm

L-shaped angle as illustrated in Fig. 4. If cutting is attempted shorter than indicated,

bracket (A) will come in contact with the nut, causing possible damage to the cutter.

Accordingly, particular caution is necessary.