Handle Trapezoidal Bucket - Komatsu PC290LC-11 Operation & Maintenance Manual

ATTACHMENTS AND OPTIONS
Light-duty digging: Digging and loading dry and loose sandy soil, or muddy soil.
Loading: Loading of dry and loose earth.
HORIZONTAL PIN TYPE TOOTH
Heavy-duty digging: Digging and hammering work on hard soil, soil with rocks, scraping or other heavy-duty
work
• The heavy-duty bucket is of a horizontal pin type and as such, use it for heavy duty-digging.
LONG-LIFE TOOTH
• Jobsites where long wear life is required, such as when loading hard rocks.
• Jobsites where no penetration is needed, such as when working with crushed rocks after blasting or rip-
ping.
• Jobsites where heavy-duty operations are performed, such as hitting or pulling up rocks with the tips of the
teeth.
SELF-SHARPENING TOOTH (HORIZONTAL PIN TYPE, VERTICAL PIN TYPE)
• Jobsites requiring penetration such as digging and loading sandy or clayey soil.
SELECTION GUIDE FOR VERTICAL OR HORIZONTAL PIN TYPE TOOTH
Digging with hammer-
Hea
Typ
ing work
vy
e of
Scraping down
￪
op-
era-
￬
General excavation
tion
Light
Loading

HANDLE TRAPEZOIDAL BUCKET

Use the trapezoidal bucket when digging trapezoidal ditches in fields. By installing the angle plate with different
angle, it is possible to excavate 3 angles of ditch slope face (45 °, 40 °, and 38 °).
• The position of installation of the angle plate is different for each ditch slope face angle (45 °, 40 °, and
38 °).
Ditch slope face angle
45 °
40 °
38 °
Digging Work
Operate the boom, arm, and bucket so that line A of the side plate of the bucket is always perpendicular to the
ground face, then perform digging.
Rock
Horizontal pin type teeth
Horizontal pin type teeth
Installation hole
(A) (B) (C)
○ ― ○
○ ○ ○
○ ○ ―
Applicable work site
Crushed stone
Vertical pin type teeth
Vertical pin type teeth
(D) (E)
― ―
○ ―
○ ○
ATTACHMENTS AND OPTIONS
Clayey soil, De-
compressed gran-
ite soil
Vertical pin type teeth
Vertical pin type teeth
Sand
6-39