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Swing motors and swing reduction assemblies for Kobelco excavators, covering both complete hydraulic swing motor units and swing reduction gearboxes across a wide range of SK-series machines from compact short-radius models to large-class excavators. Replacement units are available new and remanufactured to restore full slew function and rotational torque performance.
Fits Models At A Glance
- Compact/Short Radius Series: SK60 V, SK70SR, 70SR-1E, 70SR-1ES, E70SR, E70, EH70, SK75-8, SK80CS, SK80CS-1E, 80MSR, 80MSR-1E, 80MSR-1ES, E80, EH80
- SK115–SK135 Series: SK115SR, SK135SR, SK135SR-2
- SK200–SK210 Series: SK200-6, SK210LC-6E, SK210-6, SK210-8, SK210-9, SK210-10
- SK330–SK350 Series: SK330-6, SK350-8, SK350-9
Key Notes
- Part Types: Category includes complete hydraulic swing motors and swing reduction gearbox assemblies
- OEM Cross-Reference: Units correspond to Kobelco OEM part numbers in YN, YR, YT, YX, YY, and LC prefixes
- Generation Coverage: Spans -6, -8, -9, and -10 generation machines as well as SR and CS short-radius variants
- Fitment Verification: Confirm OEM part number on existing unit before ordering — swing reduction and motor SKUs are generation-specific
Why Choose Broken Tractor
- ✅ Kobelco-specific inventory with accurate generation fitment
- ✅ New and remanufactured units available for most models
- ✅ Fast shipping from Baton Rouge, LA and Kimbolton, OH
Frequently Asked Questions
What is the difference between a swing motor and a swing reduction on a Kobelco excavator?
The swing motor is the hydraulic motor that drives the upper structure's rotation, and the swing reduction is the gearbox assembly that works with it to deliver slew torque. Broken Tractor carries both complete hydraulic swing motors and swing reduction gearbox assemblies for Kobelco SK-series excavators. Each is sold as its own part, so identify which unit has failed before ordering.
What swing motor and swing reduction fit a Kobelco SK210-9?
For the Kobelco SK210-9 we carry swing motor SKU YN15V00055F1 and swing reduction SKU YN32W00025F1. The YN32W00025F1 swing reduction also fits the SK210-10. The SK210-6 and SK210-8 use different swing reductions (YN32W00004F1 and YN32W00022F2), so confirm your machine's generation first.
Does the Kobelco SK350-8 swing motor fit an SK350-9?
Yes, swing motor SKU LC15V00022F2 is listed to fit both the Kobelco SK350-8 and SK350-9. The swing reduction is different. SKU LC32W00011F1 is listed for the SK330-6 and SK350-8 only, so check the OEM part number on your existing reduction before ordering.
Is the Kobelco SK135SR swing reduction the same as the SK135SR-2?
No, the SK135SR and SK135SR-2 use different swing reductions. We carry SKU YX32W00002F2 for the SK135SR and SKU YY32W00004F1 for the SK135SR-2. The SK115SR has its own swing reduction as well, SKU YX32W00002F1.
How do I find the right swing reduction or swing motor for my Kobelco excavator?
Read the OEM part number on your existing unit and match it to the part, since Kobelco swing motor and swing reduction SKUs are generation-specific. Kobelco OEM numbers for these parts use YN, YR, YT, YX, YY and LC prefixes. Some models have more than one option, for example the SK80CS is listed under both YT32W00002F1 and YT32W00002F2. If you are unsure, call (800) 909-7060 and the parts team can help confirm fitment.