Live Swivels
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Live swiwels are not adequate for 360 degree Backhoes
See [1]
Rotary Unions in 360 Excavator
- A specialized rotary union is used, not just a simple live swivel - [2]
- Explanation from hydraulics and pneumatics - [3]
- In real life: Infinite spin is attained. From Reddit thread - [4] -
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Rotating 360 Without 360 Rotary Union?
<html><iframe width="560" height="315" src="https://www.youtube.com/embed/ha2otJnU4pQ" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></html>
Backhoe vs Excavator
- Backhoe spins 200 degrees, excavator a full 360 degrees. [5]
Shopping
- $1500 for 1/2: rotary union [6]. But what about the female socket part?