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Doosan Excavator Swing Motor

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Doosan Excavator Swing Motor parts list
Image Fits Model Description Part # Price Product Details
Daewoo \ Doosan Swing Motor -- 401-00457B See Details Daewoo Excavators: S300LC-7A, S300LC-V, S300LL Doosan Excavators: DX300LC, DX300LL Swing Motor 401-00457B
From $2,310.00
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Doosan Excavator DX210W, DX225LL Swing Reduction (130426-00011) See Details DX210W, DX225LC, DX225LL Swing Reduction 130426-00011
From $4,761.00
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Doosan Excavator DX340LC-3, DX350LC-3, DX380LC-3 Swing Reduction (130426-00018) See Details DX340LC-3, DX350LC-3, DX380LC-3 Swing Reduction 130426-00018
From $2,800.00
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Doosan Excavator DX255LC-5 Swing Reduction, part number 130426-00026 See Details DX255LC-5 Swing Reduction 130426-00026
From $4,830.00
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Doosan Excavator DX300LC-3 Swing Motor (170303-00064) See Details DX300LC-3 Swing Motor 170303-00064
From $2,730.00
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Doosan Excavator DX340LC Swing Reduction -- 404-00094B See Details DX340LC Swing Reduction 404-00094B
From $4,485.00
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Doosan Excavator DX340LC Swing Reduction (404-00097C) See Details DX340LC Swing Reduction 404-00097C
From $4,761.00
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Doosan Excavator DX340LC Swing Motor (K1007543A) See Details DX340LC Swing Motor K1007543A
From $3,657.00
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Swing motors and swing reduction units for Doosan and Daewoo excavators, covering both hydraulic swing motor assemblies and planetary swing reduction gearboxes across a wide range of crawler and wheeled excavator models from the 140 to 380-class machines.

Fits Models At A Glance

  • 140–180 Class: DX140LC-3, DX180LC
  • 190–235 Class: DX190W, DX210W, DX225LC, DX225LL, DX235NLC
  • 255 Class: DX255LC-3, DX255LC-5
  • 300 Class: DX300LC, DX300LC-3, DX300LL
  • 340–380 Class: DX340LC, DX340LC-3, DX350LC-3, DX380LC-3
  • Daewoo Legacy: S300LC-7A, S300LC-V, S300LL

Key Notes

  • Part Types: Hydraulic swing motors and planetary swing reduction gearboxes available separately
  • Generations: Covers standard, -3, and -5 series Doosan excavators as well as Daewoo predecessors
  • Configuration: Crawler (LC/LL/NLC) and wheeled (W) excavator fitments both represented
  • Compatibility: Daewoo S300-series units cross to Doosan DX300-series applications

Why Choose Broken Tractor

  • ✅ Competitive pricing on Doosan swing drive components
  • ✅ Wide model coverage from 140 to 380 class
  • ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH

Frequently Asked Questions

What Doosan excavator sizes do your swing motors fit?

Broken Tractor carries Doosan swing motors and swing reduction units for 140 to 380 class excavators. Coverage includes the DX140LC-3, DX180LC, DX190W, DX210W, DX225LC, DX225LL, DX235NLC, DX255LC-3, DX255LC-5, DX300LC, DX300LC-3, DX300LL, DX340LC, DX340LC-3, DX350LC-3 and DX380LC-3. Both crawler (LC, LL and NLC) and wheeled (W) models are represented.

How does an excavator swing motor work?

The hydraulic swing motor turns a planetary swing reduction gearbox, which rotates the upper structure of the excavator. On Doosan excavators these are two separate components, and Broken Tractor sells the hydraulic swing motor and the swing reduction gearbox as separate parts. Knowing which half of the swing drive has failed helps you order the right replacement.

Is the swing reduction gearbox included with a Doosan swing motor?

No, Doosan hydraulic swing motors and planetary swing reduction gearboxes are sold as separate parts. For example, the DX210W, DX225LC and DX225LL use swing reduction SKU 130426-00011, while the swing motor for those models is SKU K1000697A. If you need both halves of the swing drive, order each part number for your model.

Will a Daewoo S300LC-7A swing motor fit a Doosan DX300LC?

Yes, swing motor 401-00457B fits the Daewoo S300LC-7A, S300LC-V and S300LL as well as the Doosan DX300LC and DX300LL. The DX300LC-3 uses a different swing motor, SKU 170303-00064. Match the part number on your old motor to make sure you get the right unit.

Which swing reduction fits a Doosan DX340LC?

Broken Tractor offers two swing reduction units for the Doosan DX340LC, part numbers 404-00094B and 404-00097C. Since two versions fit this model, match the part number on your existing gearbox or confirm with the parts team before ordering by calling (800) 909-7060. The DX340LC-3 uses a different swing reduction, SKU 130426-00018.

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