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PC128 Swing Reducer

Machine-fit swing reducer — PC128

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PC128 excavator swing reducer gearbox
Swing Reduction Gearbox

PC128

Machine-fit swing reducer — PC128
Full specsAsk us for the data sheet
ConditionNew · OEM-standard aftermarket
Warranty6–12 months
Lead timeStock 48 h · Non-stock 5–15 days
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Reducers are listed by machine fitment. Every unit is inspected before dispatch. Pair with a matching swing motor — or ask for the complete swing drive.

About This Swing Reducer

The swing reducer (swing gearbox) is a two-stage planetary reduction mounted between the swing motor and the swing bearing pinion. Speed and torque matching are factory-calibrated for each machine family — high efficiency, low noise.

The PC128 is an OEM-standard aftermarket replacement built to the original mounting, spline and port specification. Bolt-on installation — no machining or adaptation required.

Every unit is inspected and pressure-checked before dispatch and ships with a test report. Stock models leave within 48 hours; non-stock units are typically ready in 5–15 days. Sea, air and express shipping are available worldwide, and our team answers quote requests within 12 hours — usually much faster on WhatsApp.

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View all 24 models in the catalog →

Motor and gearbox — separate or together?

Swing reducers here are the gearboxes alone. Pair with a swing motor from the Swing Motor Catalog, or ask for the complete swing drive assembled.

Which machines do these fit?

Each reducer is listed by machine model — Hitachi ZAX, Komatsu PC, Kobelco SK, Sumitomo SH, Doosan DX/DH, Volvo EC and more. Send your machine model if unsure.

Do you supply output pinions?

Yes — output pinions, gear rings, planet carriers and bearing sets are available for the popular families.

Get a Quote in 12 Hours

Send your part number, machine model or a nameplate photo — WhatsApp is fastest.

WhatsApp: +86 134 5036 5883 Email: [email protected]
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