536-6580: PSF Motor Assembly
Technical Specifications for Part No. 536-6580
Material: Gray (Flake) Iron,Ductile (Spheroidal) Iron
The part number 536-6580 is a Swing Motor Group for Caterpillar equipment.
Here is a detailed breakdown of what this part is and where it's used:
1. What is a Swing Motor?
A swing motor is a crucial hydraulic component in heavy equipment, primarily excavators. Its job is to rotate (or "swing") the entire upper structure of the machine—the cab, boom, arm, and attachment—360 degrees on its undercarriage.
The 536-6580 Motor GP is not just the internal motor; it's a complete group or assembly that typically includes:
The hydraulic motor itself
The reduction gearbox (swing drive)
The parking brake
Possibly the swing circle gear (pinion)
2. Primary Application: Caterpillar® Excavators
This swing motor group is designed specifically for several models of Caterpillar excavators. You will most commonly find it on these popular models:
CAT 320D / 320D L
CAT 320D LN
CAT 323D L
CAT 324D / 324D L
It's always essential to double-check your specific machine's Serial Number against the part number to ensure compatibility, as there can be variations within model lines.
3. Common Symptoms of a Failing Swing Motor
If this part needs replacement or repair, you might notice these issues with your excavator:
Swinging is slow or sluggish: The machine struggles to turn.
Inability to swing: The function fails completely.
Swing drift: The upper structure slowly drifts or creeps on its own when it should be stationary.
Unusual noises: Grinding, knocking, or whining sounds coming from the swing mechanism during operation.
Oil leakage: Hydraulic oil leaking from the motor or gearbox seals.
4. Important Note on Sourcing this Part
OEM (Original Equipment Manufacturer): This is the genuine Caterpillar part number. Purchasing from a CAT dealer guarantees compatibility and reliability but is often the most expensive option.
Aftermarket/Replacement: Many reputable manufacturers produce high-quality compatible replacement parts for the 536-6580 group. These can offer significant cost savings.
Rebuilt/Remanufactured: A very common and cost-effective option is to exchange your faulty core for a remanufactured unit. The old unit is disassembled, cleaned, worn parts are replaced, and it is rebuilt to meet original specifications.
In summary: 536-6580 is a complete Swing Motor Assembly (Motor GP) used primarily on Caterpillar 320D, 323D, and 324D series excavators to provide 360-degree rotation.
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Slewing Hydraulic Motor CAT 536-6580 Final Drive Motor Images
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