Kobelco SK220 挖掘机 加长臂 技术参数 技术建议

Long reach boom&arm is not a best standard length for excavator, so, as a consideration of excavator burden, it's better to keep it similar or even lighter than the original one. (Lever Principle.)

Kobelco SK220

Pricinples for Long Reach Boom & Arm

Principles:

1. Weight Control:

Balance between front boom&arm and counter weight at the back.

Marks: This design is without counter weight at the back.

2. Consideration of Burden:

Long reach boom&arm is not a best standard length for excavator, so, as a consideration of excavator burden, it's better to keep it similar or even lighter than the original one. (Lever Principle.)

Marks: According to our manufacture records, the length can reach 18 meters with counter weight at the back.

3. Power System Maximum Working Pressure:

The power hydraulic pump inside is settled by its manufacturer, so the working pressure is settled, any changes should follow the limits of hydraulic pressure.

Conclusion:

According our sophesticated technician, for Long Reach Boom&Arm:

Too Heavy will lead to：

Low Working Efficiency,

Damage for Power System.

Shorter Working Life Expectancy.

Too Light will lead to:

High risk of yiled.

Low pressure-bearing.

To keep the balance between working stength, efficiency and life expectancy, we conclude this technical standard.

2. Reference data

SK220 Original Data

SK220 14M Long Reach Boom