Sharpening The Cutter Blades; Maintenance And Inspection - Hitachi P 20SB Mode D'emploi Et Instructions De Securite

SHARPENING THE CUTTER BLADES

Use of the optional accessory Blade Sharpening Ass'y
is recommended for convenience.
(1) Use of Blade Sharpening Ass'y.
As shown in Fig. 17, two blades can be mounted on
the blade sharpening ass'y to ensure that the blade
tips are ground at equal angles. During grinding,
adjust the position of the cutter blades so that their
edges simultaneously contact the grinding stone
as shown in Fig. 18.
(2) Cutter blade sharpening intervals:
Cutter blade sharpening intervals depend on the
type of wood being machined and the cutting
depth. However, sharpening should generally be
effected after each 1640ft (500m) of cutting
operation.
(3) Grinding allowance of the cutter blades:
As illustrated in Fig.19, a grinding allowance of
0.14" (3.5mm) is provided for on the cutter blade.
That is, the cutter blade can be repeatedly sharpened
until its total height is reduced to 0.96" (24.5mm).
(4) Grinding Stone
When a water grinding stone is available, use it
after dipping it sufficiently in water since such a
grinding stone may be worn during grinding
procedures, flatten the upper surface of the grinding
stone as frequently as possible.

MAINTENANCE AND INSPECTION

WARNING:
1. Inspecting the cutter blades:
Continued use of dull or damaged cutter blades will result in reduced cutting efficiency
and may cause overloading of the motor. Sharpen or replace the cutter blades as often
as necessary.
Be sure to switch power OFF and disconnect the plug from the receptacle
during maintenance and inspection.
Cutter blade
Fig. 17
Fig. 18
Grinding allowance 0.14"
Fig. 19
English
Machine
screw
(3.5mm)
0.96"
(24.5mm)
15