Excavator Swing Transmissions

Excavator Swing Transmissions – Hitachi, John Deere, Caterpillar

VI Equipment has a large inventory of Excavator Parts, including John Deer Swing Transmissions, Hitachi Swing Transmissions, Caterpillar Swing Transmissions and more ready to ship worldwide. We offer used, rebuilt and new swing transmissions for excavators. Choose from one our swing transmissions below or contact us for all your excavator part needs!

We Ship Excavator Swing Transmissions to the USA, Canada, and Worldwide

No matter where your project takes you, VI Equipment can keep you moving. We offer global shipping on all our excavator swing transmissions, ensuring you get the parts you need quickly and efficiently.

Why Shop VI Equipment for Your Excavator Swing Transmissions

There are many reasons to choose VI Equipment for your excavator swing transmissions. We offer exceptional value, unmatched selection, and reliable performance to keep your projects on track. Discover the VI Equipment difference and experience the benefits firsthand.

Excavator Swing Transmissions: Precision Gearboxes for Smooth Slew

Swing transmissions couple your swing motor to the planetary gearbox, translating hydraulic power into the controlled rotary torque that spins your upper structure. When internal gears gall, bearings fatigue, or housings crack, you’ll feel jerky starts, uneven slew speeds, or hear metal grinding—clear signs that your transmission needs attention. VI Equipment stocks complete swing-transmission assemblies—input shaft, gear train, bearings, seals, and case—that bolt straight in to restore factory slew performance and eliminate costly drift.

Reman & Brand-New Swing Transmissions for John Deere, Hitachi & Caterpillar

Whether you run a Deere 160G’s KYB transmission, a Hitachi ZX300’s Rexroth unit, or a Cat 336’s Bonfiglioli assembly, we catalogue swing transmissions by machine model, serial prefix, and OEM part number for exact-fit replacements. Reman assemblies are disassembled, magna-flux crack-checked, and rebuilt with new case-hardened gears, tapered-roller bearings, and multi-lip seals—delivering OEM torque at roughly 60 % of dealer cost. Brand-new aftermarket units feature forged 42CrMo steel gears, precision-machined housings, and Viton seal packs, all backed by a 12-month unlimited-hour warranty.

Diagnosing Swing-Transmission Wear Before It Grounds You

Watch for a rising howl during rotation, oil weeping around the case seam, or erratic slew acceleration under steady lever input—classic indicators of internal gear wear or seal bypass. A quick case-drain flow check (anything over 10 % of rated displacement) confirms leakage past bearings or gears. Capture a short video of the noise or pull a sample from your drain-plug and email it to our parts desk; we’ll advise whether a reseal kit, partial rebuild, or full assembly swap is the smartest route.

In-House Swing-Transmission Rebuilds: Line-Bored, Shimmable & Dyno-Verified

Our Langley gearbox shop completes most swing-transmission rebuilds in five business days. We line-bore bearing journals to ± 0.03 mm, lap gear teeth to factory tooth-profile specs, and shim tapered bearings to OEM preload. Each unit runs on a 250 hp slew-stand dyno, logging breakout torque, backlash, and case-temperature rise at 25 %, 50 %, 75 %, and 100 % load. A printed performance report ships with every assembly so you know exactly what meets spec before it goes back on your machine.