In any construction work, especially large-scale projects, the role of the swing excavator is one of the determining factors for efficiency. Operators who are used to relying on tool performance will understand that smooth and powerful rotation will save time and reduce operational costs. Therefore understanding how the swing works and choose an excavator unit The right one is critical to project success.
Understanding Excavator Swing
Swing excavator is a full rotation mechanism at the top of the excavator which is driven by a hydraulic system. Energy from the hydraulic pump flows to the swing motor and then passes to the planetary gear before finally moving the slewing ring which makes the entire upper structure rotate. This system allows the excavator to work without the need to move the track so that maneuvers are faster and more effective.
In practice, swing is a link between the three main groups.
- Upperstructure where the counterweight machine cabin and boom are located.
- Slewing system that contains motor bearing gear and regulating valve.
- And an undercarriage that remains stationary when the superstructure rotates.
The performance of all three must be in harmony so that the excavator is able to rotate precisely and safely.
The terms swing and slew often appear together. Swing is more commonly used in the heavy equipment industry while slew refers to a bearing mechanism that carries rotational loads. These two terms basically refer to the same function.
Main Components of the Swing System
1. Swing Motor
This is where hydraulic energy is converted into rotational energy. The swing motor receives a high pressure oil flow which then produces large torque to rotate the main gear.
2. Swing Bearing
This large ring-shaped component supports the entire upper structure of the excavator. Swing bearings withstand vertical loads, radial loads and twisting forces, especially when the tool rotates while carrying material.
3. Gear dan Planetary Gear
The main gear passes the energy from the motor to the slewing ring. The planetary gear has the function of increasing torque so that the rotation remains strong and stable even though the excavator is carrying a heavy load.
4. Swing Brake
The brake helps stop rotation in a certain position. When the operator releases the swing joystick, the brake activates automatically.
5. Swing Control Valve
The valve regulates the amount and direction of oil flow to the swing motor. This component plays a role in determining the response speed and rotation direction.
Swing Excavator Working Mechanism
The rotation process follows the following stages. The hydraulic pump produces oil pressure. Oil enters the swing control valve and then passes to the swing motor. The motor rotates the pinion gear. Planetary gear increases torque. The pinion gear then moves the slewing ring. The entire upperstructure finally rotates.
Full rotation is achieved because the slewing ring has internal teeth that allow unlimited rotation. The bearing structure keeps rotation smooth even though the load being held is very large.
In an analysis of the performance of swing machinery carried out by AP Pramana, it was found that the swing excavator was capable of producing a torque of around five hundred and three Newton meters with an efficiency approaching ninety percent.. These figures show that swing quality is one of the main indicators of an excavator's ability in the excavation cycle.
When the swing mechanism works well the cycle time becomes shorter. The process of moving material from the excavation area to the dumping area takes place without obstacles so that productivity increases.
Swing Excavator Function in Field Projects
1. Excavation Efficiency
Swing means the operator does not need to move the undercarriage. Simply rotate the top to move the bucket from point A to point B.
2. Precision Maneuvering
In narrow areas, swing rotation is the ideal solution. The excavator can move safely near walls or other structures.
3. Accurate Material Placement
Swing makes it easier for operators to direct material to the truck at a certain angle so that the loading process is faster.
4. Better Productivity
The zero tail swing type provides extra movement space because the rear of the superstructure does not cross the width of the track.
Types of Swing Excavators
1. Full Swing
This type has a longer tail radius and is usually used in large areas such as highway or mining projects.
2. Zero Tail Swing
Does not have a protruding back. Very safe to use near buildings or in limited work spaces.
3. Short Tail Swing
The tail radius is shorter than the full swing but not as compact as the ZTS. Widely used in urban projects.
4. Mini Excavator Swing
Its use is ideal for small areas. Research from Gadjah Mada University shows that the swing on the mini excavator is still capable of producing safe and flexible rotation.
Common Problems with Swing Systems
Swing vibration is usually caused by worn backlash gear bearings, unstable hydraulic pressure or uneven torque. An unbalanced condition can arise if the load distribution is incorrect or the slewing ring is worn on one side. Slow swing occurs when oil flow is reduced or the relief valve opens too quickly. Hydraulic leaks in hoses or seals will weaken torque so that rotation is unresponsive.
Frequently asked questions. Why does the excavator swing feel weak?. The cause is generally because the torque does not reach the ideal value due to leaks or damage to the planetary gear.
How to Maintain an Excavator Swing
Following how to maintain heavy equipment especially swing the excavator correctly so that undesirable things don't happen in the future.
Routine Lubrication
Swing bearing lubrication must be carried out regularly so that the load distribution remains even.
Slew Ring Bolt Inspection
All bolts must be installed with torque according to manufacturer's standards so that the gear does not shift.
Hydraulic Pressure Check
Make sure the pressure is in optimal conditions. Check the oil flow valve and hose condition.
Seal and O-ring replacement
A damaged seal can cause pressure to drop so that swing performance weakens. Regular replacement will extend the service life of the tool.
Quality of care has a direct impact on uptime and productivity. The better the swing maintenance, the less downtime that hinders work.
Use of Swing Excavators in Various Sectors
Swing excavators are the backbone of excavation work in the construction of roads from mining dams to plantations. Both for trenching, slope cutting, material loading and swing drainage work, it is always a component that plays a big role in smooth operations.
Why Contractors Choose PSU as an Excavator Rental Partner
To support projects that require excavators with powered swings, choosing the right vendor is a crucial decision. PT Perkasa Sarana Utama provides a variety of well-maintained excavator units that are ready to be used for light to heavy excavation work.
Some of the advantages of PSU include:.
The excavator fleet is always in optimal condition thanks to regular maintenance. All units have gone through strict inspections so that the swing motor, bearing valve and gear system can work optimally from day one.
SIO certified operators and experienced in dealing with various field conditions. They understand how to maximize swing performance so that cycle time remains efficient.
Technical and mechanical support is available twenty-four hours. If problems occur, the PSU team is ready to come directly to the project location or replace the unit so that downtime can be reduced.
The ordering process is fast and transparent. You can contact
- Call Center: (021) 8242 8055
- WhatsApp: 0812 5233 3349
- Email: rent@psualatberat.com
- Website: psualatberat.com
The PSU team will help determine the excavator unit that best suits the swing conditions and work completion targets.
Closing
Swing excavator not just the system that makes the heavy equipment turn. It is the part that determines how fast and precisely an excavator works. If the strong swing is stable and maintained, excavation performance will increase and the project duration can be shortened. Therefore, choosing a quality excavator is an important step for every contractor.
For excavator rental needs with optimal swing performance, you can consult directly with PT Perkasa Sarana Utama. PSU is ready to help you find the most efficient unit so that the project can run more quickly, safely and with quality.
