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Hyundai Excavator Swing Motor

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Hyundai Excavator Swing Motor parts list
Image Fits Model Description Part # Price Product Details
Pinion Gear for Hyundai R180LC-3, R210LC-3 Excavators – 81EM-00010 See Details R170W-3, R180LC-3, R200W-3, R210LC-3, R210LC-3H, R210LC-3LL Pinion Gear 81EM-00010
$840.00
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Dyco Hydraulic Motor and Gearbox Swing Drive, 350 lbs, for Hyundai R140LC-7 See Details R140LC-7 Swing Drive Motor and Gearbox 31N4-10152
From $4,071.00
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Hyundai Excavator R160LC-7, R210LC-7 Swing Reduction (31N6-10160) See Details R160LC-7, R210LC-7 Swing Reduction 31N6-10160
From $3,657.00
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Hyundai Excavator R290LC-7 Swing Reduction (31N8-10181) See Details R290LC-7 Swing Reduction 31N8-10181
From $6,008.00
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Dyco Swing Motor for Hyundai R290LC-7 Excavator, part # 31N8-12010 See Details R290LC-7 Swing Motor 31N8-12010
From $3,150.00
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Dyco Swing Reduction Gearbox for Hyundai R320LC-7 - Replaces 31N9-10180, 31N9-10181 See Details R320LC-7 Swing Reduction Gearbox 31N9-10181
From $7,088.00
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Hyundai Swing Motor for R210LC-9 Excavator See Details R210LC-9 Swing Motor 31Q6-10130
$3,010.00
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Hyundai Swing Reduction Gear for R210LC-9 Excavator See Details R210LC-9 Swing Reduction 31Q6-10141
From $4,761.00
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Hyundai Swing Motor for R250LC-9, R260LC-9A Excavators See Details R250LC-9, R260LC-9A Swing Motor 31Q7-10160
From $3,500.00
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Hyundai Swing Reduction Gear for R320LC-9, R330LC-9 See Details R320LC-9, R330LC-9 Swing Reduction 31Q9-19140
From $5,738.00
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Hyundai Excavator Swing Reduction See Details R360LC-7 Swing Reduction 31QA-10140
From $6,683.00
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Hyundai Excavator R380LC-9 Swing Reduction (31QA-10142) See Details R380LC-9 Swing Reduction 31QA-10142
From $7,590.00
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Hyundai Excavators R200LC, R210LC-3 Swing Reduction (RG08S-172-01) See Details R200LC, R210LC-3 Swing Reduction RG08S-172-01
From $4,071.00
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Swing motors and swing reduction gearboxes for Hyundai excavators, covering hydraulic motor assemblies, swing drive units, and reduction gear components across the -3, -7, and -9 series machine generations. Sourced from trusted suppliers including Dyco (South Korea) for reliable performance in demanding jobsite conditions.

Fits Models At A Glance

  • -3 Series: R160LC-3, R180LC-3, R200LC, R210LC-3, R290LC-3, R320LC-3
  • -7 Series: R140LC-7, R160LC-7, R210LC-7, R250LC-7, R290LC-7, R320LC-7, R360LC-7, R450-7
  • -9 Series: R210LC-9, R250LC-9, R260LC-9A, R290LC-9, R300LC-9A, R300LC-9S, R300LC-9SH, R320LC-9, R330LC-9, R360LC-7, R380LC-9

Key Notes

  • Assembly Types: Full swing drive assemblies and individual reduction gearboxes both available depending on repair scope
  • Sourcing: Select units supplied by Dyco, a South Korean manufacturer known for hydraulic component quality
  • Compatibility: Verify machine serial number and generation (-3, -7, -9) before ordering — part numbers differ across series
  • Application: Upper structure rotation on crawler excavators; critical for bucket positioning and cycle times

Why Choose Broken Tractor

  • ✅ Multi-generation Hyundai coverage across -3, -7, and -9 series
  • ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH
  • ✅ Excavator parts specialists with deep Hyundai fitment knowledge

Frequently Asked Questions

What swing motor fits a Hyundai 210 excavator?

It depends on the generation of your Hyundai 210. For the R210LC-7 we carry a swing motor (SKU 31N6-10210) and a swing reduction (SKU 31N6-10160) that also fits the R160LC-7. For the R210LC-9 we offer a swing motor (SKU 31Q6-10130) and a swing reduction gear (SKU 31Q6-10141), and for the R200LC and R210LC-3 a swing reduction (SKU RG08S-172-01) plus a pinion gear (SKU 81EM-00010).

What swing motor fits a Hyundai 140 excavator?

For the Hyundai R140LC-7, Broken Tractor offers a swing motor (SKU 31N4-10130) and a complete swing drive assembly with hydraulic motor (SKU 31N4-10152). The complete assembly is supplied by Dyco, a South Korean hydraulic component manufacturer. Match the part number on your existing unit before ordering.

Do Hyundai excavator swing motors interchange between the -3, -7 and -9 series?

No. Part numbers differ across the -3, -7 and -9 generations, even on machines of a similar size such as the R210LC-7 and R210LC-9. Verify your machine serial number and generation, and match the part number from your old unit. If you are unsure, call (800) 909-7060 to confirm fitment with our parts team.

Should I replace the whole swing drive or just the swing reduction gearbox on my Hyundai excavator?

It depends on which component has failed and how large a repair you plan to do. We carry full swing drive assemblies and swing motors, as well as individual swing reduction gearboxes for models such as the R250LC-7, R290LC-7, R320LC-7, R290LC-9, R320LC-9, R330LC-9 and R380LC-9. Replacing only the reduction gearbox can work when the hydraulic motor is still in good condition.

How does an excavator swing motor work?

The swing motor is a hydraulic motor that powers rotation of the excavator's upper structure. It works together with the swing reduction gearbox to turn the upper structure, which positions the bucket and directly affects cycle times. Because the motor and reduction work as a pair, a problem in either part can affect how the machine swings.

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