EC210 EC290 Long Reach Boom 18m Vol-vo Excavator Digger Extension Arm Q355B A long reach arm is the working front end of an excavator and it sets the reach of the bucket. On a Vol-vo EC210 or EC290, this 18 m front end extends the digging envelope by about 10 m, so a 20 to 29 ton machine can clean channels, desilt ponds and shape slopes without moving onto the water line. With a longer front end every part works harder, so boom, arm, cylinder strokes and linkage are designed
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