345C Excavator (Ultra High Demolition) Hydraulic System Caterpillar


Cylinders (Boom, Stick and Bucket)

Usage:

345C L SCN



Illustration 1g01621912

(1) Rod end port

(2) Head end port

(3) Boom cylinder

(4) Tube

(5) Rod

(6) Snubber

(7) Piston

(8) Stick cylinder

(9) Snubber

(10) Bucket cylinder

(11) Cab tilt cylinder

(12) Fore boom cylinder




Illustration 2g01621923

Snubber operation

(6) Snubber

(13) Passage

When boom cylinders (3) or stick cylinder (8) moves close to the end of the extension stroke, passage (13) is restricted by snubber (6). The movement of the piston rod slows down before the piston rod stops.




Illustration 3g01621929

Snubber operation (retracting rod)

(9) Snubber

(14) Passage

When stick cylinder (8) moves close to the end of the retraction stroke, passage (14) is restricted by snubber (9). The movement of the piston rod slows down before the piston rod stops. The shock load is absorbed when the piston is slowed down.

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