Swing Motors & Reductions

Mid Plant supplies complete excavator swing motors, swing reductions, swing gearboxes and internal swing motor parts for Doosan, Volvo, JCB, Sumitomo and selected Hyundai excavators. Send us the machine make and model and we can help identify the correct assembly or replacement component.

Brands available
  • Doosan
  • Volvo
  • JCB
  • Sumitomo
  • Hyundai

Need help identifying the part? Call 011 967 0060

Grey excavator swing reduction assembly in the Mid Plant warehouse

Swing Motor vs Swing Reduction

The swing motor converts hydraulic pressure into rotational movement. The swing reduction, also called the swing gearbox or reduction gearbox, reduces motor speed and increases torque before transferring movement to the excavator’s upper structure.

These components work together as part of the excavator swing system. Depending on the machine, specification and component failure, they may be supplied as a complete assembly or as separate replacement parts.

Available Parts

Tell us the machine brand and model when enquiring so the team can confirm compatibility and availability.

Red Doosan DX420 swing motor reduction assembly

Complete Swing Motor Assemblies

Complete swing motor assemblies for selected excavator models, including the hydraulic motor and associated swing components where supplied as a complete unit. Availability depends on machine make, model and specification.

Doosan swing motor reduction assemblies in the Mid Plant warehouse

Swing Reductions & Gearboxes

Complete swing reductions and swing gearboxes, including compatible reduction assemblies and internal gearing. These may be supplied separately from the hydraulic swing motor where the reduction unit is the failed component.

Top detail of a Volvo swing reduction assembly

Seals, Bearings & Bushings

Replacement seals, bearings and bushings for compatible swing motor and reduction assemblies. Supply depends on unit identification and availability.

Volvo swing reduction assembly with open housing detail

Rotating Groups & Shafts

Rotating groups and shafts for selected hydraulic swing motors, matched using the machine and component details.

Swing Motors & Reductions by Equipment Brand

Use the referenced models as a starting point. Send us your machine details if the exact model is not listed.

Doosan

Doosan

Models referencedDX225LCA · DX300 · S225 · DX340 · DX420

View Doosan Swing Motors & Reductions
Volvo

Volvo

Models referencedEC210 · EC460 · EC300 · EC360 · EC700 · EC750

View Volvo Swing Motors & Reductions

JCB

Models referencedJS205

View JCB Swing Motors & Reductions
Hyundai

Hyundai

Send us the model and any available part or casting number.

View Hyundai Swing Motors & Reductions

Help Identifying the Correct Swing Component

Swing motors and reductions can vary between excavator models and between specifications within the same model family. When enquiring, send the excavator manufacturer and model, the swing motor or reduction part number if available, photographs of the existing unit, identification plate or casting numbers, and whether you require a complete assembly or an internal part.

Tell us what part you need

Send the component, machine brand and model. The Mid Plant team will help identify the correct option.

Enquiring about: Swing Motors & Reductions

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