Excavator 20 Meter Long Reach Boom And Arm For Kobelco SK380

18 Meteres excavator long arm CAT320D SK200 DX200 ZX200 SH200 R920 SY200 liugong 920 spade boom stick for backhoe dredger

01 Use Q355B material,
02 Adopts precision steel pipeline
03 Adopt alloy copper sleeve big arm base
04 Two layers groove welded to ensure
05 Double quality inspection before leaving
06 The tolerance of position size within 1 mm
07 Angle of boom and arm can reach 163°

CUSTOMIZATION:

1. Applicable for all brand excavator.

2. Color, length, material can do according to you.

3. Extra pipeline can be added to suit to some extra application.

4. Boom cylinder and stick cylinder can also be supplied if customer want.

STRONG PRODUCTION CAPACITY:

We can produce 50 sets excavator booms per month.

Our annual output of various types of excavator boom arms can reach 600 sets.

GOOD SERVICE:

1. Online support within 24 hours.

2. Appointment video technical support.

(Our engineers have focused on excavator boom and attachment over 10 years)

3. Long excavator boom shall be two/three jointed pcs to make it fittable into container to save shipping cost.

WARRANTY

1 year for long reach boom, 180 days for cylinder and linkage, 90 days for bucket.

The long arm of the excavator is made of Q355B steel with good strength and rigidity. The shaft sleeve of the lengthened arm is generally made of 45 # steel, with 40Cr bushing inside, together with the lubricating effect of butter, it reduces the shear force produced when the shaft and the sleeve rotate frequently, thus, the service life of shaft sleeve is increased. The excavator long arm structure is generally a box-type structure, that is, the upper and lower two cover plates, plus the left and right two sidewall are combined to form, the inside needs to be welded with buffer bars, and the buffer bars must be opened with elliptical holes, this can better release the extension arm in the welding work produced by the stress, to avoid damage to the extension arm.

1. Long reach excavator boom

2. Excavator telescopic boom

3. Demolition boom

4. Excavator rock bucket

5. Excavator tilting bucket

6. Hydraulic grabs for excavators

FIRST--CORE CRAFT TECHNOLOGY
 

1. Less maintaince

2. Strong and sturdy

The pictures of excavator long arm for CAT

Q1: Why not have boom and stick cylinders in the plan?
A1: First, the whole long arm is lengthening, but the boom just lengthening from its middel sleeve to its end, so the original boom and stick cylinder can be used. Second, using the original parts can save your cost.

Q2: How long is the boom arm can min excavator be be configured with? Whether it is necessary to increase the counterweight?
A2. Generally speaking, 30-40 excavator longest arm suggests to be 8 meters, can configure 0.1 cbm bucket, no need extra counterweight. 55 excavator longest arm suggests to be 12 meters, can configure 0.1-0.15 cbm bucket, need 0.5 ton extra counterweight. 60-80 excavator longest arm suggests to be 12 meters, can configure 0.15-0.25 cbm bucket, need 0.5-0.7 ton extra counterweight.
It is not recommended to extend boom arm to longest length as min excavator is easy to sloshing.

Q3: How long will it takes to install a excavator long reach boom?

It depends on the installer and machine size.
Usually disconnect the original boom arm, stick cylinder, then pin the new one is okay.
Kindly remind, prepare several containers to fill the oil before disassemble.