Excavator Swing Devices

Excavator Swing Devices – Hitachi, John Deere, Caterpillar

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

We Ship Excavator Swing Devices 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 devices, ensuring you get the parts you need quickly and efficiently.

Why Shop VI Equipment for Your Excavator Swing Devices

There are many reasons to choose VI Equipment for your excavator swing devices. 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 Devices: Precision Power for Controlled Rotation

Swing devices—often encompassing the swing motor, drive gearbox, and control valve assembly—are the heart of your excavator’s slew system, converting hydraulic flow into the torque and speed that spin your upper structure. When any component in this trio falters—leaky motor seals, worn gear teeth, or sticky control valves—you’ll feel jerky starts, erratic slew speeds, or hear grinding that signals impending failure. VI Equipment stocks fully dressed swing-device assemblies that bolt straight in, restoring smooth, predictable rotation and preventing costly swing drift.

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

Whether your machine calls for a KYB swing motor paired with a Rexroth gearbox on a Deere 160G, a Bosch-Rexroth planetary drive on a Hitachi ZX300, or a Bonfiglioli unit on a Cat 336, we catalogue complete swing-device packages by model, serial prefix, and OEM part number for exact-fit replacements. Reman assemblies are fully stripped, magna-fluxed, and rebuilt with new tapered-roller bearings, case-hardened gears, and high-pressure seals—delivering factory torque at roughly 60 % of dealer price. Brand-new aftermarket units feature forged 42CrMo steel gears, precision-machined housings, and multi-lip Viton seals, all backed by a 12-month unlimited-hour warranty.

Diagnosing Swing-Device Wear Before It Grounds You

Watch for uneven slew acceleration, oil weeping from motor case-drain ports, or a rising howl as you rotate—classic signs of internal bypass or gear fatigue. Measure case-drain flow: rates exceeding 10 % of rated displacement indicate motor seal failure. Listen for intermittent torque dips under consistent control-lever input, which often trace back to worn valve spools. Capture a short video of the erratic slew or send us a photo of your magnetic drain-plug debris and our parts desk will advise whether a seal-kit refresh, partial rebuild, or full assembly swap is the smartest route.

In-House Swing-Device Rebuilds: Precision Machining & Dyno Verification

Our Langley gearbox and hydraulic lab turns most swing-device rebuilds in five business days. Gearboxes are line-bored to ± 0.03 mm and shims set to OEM backlash specs, while motors are bench-tested on a 250 hp slew stand logging torque, pressure drop, and case-drain flow at 25 %, 50 %, 75 %, and 100 % load. Control valves are ultrasonic-cleaned, spool-lapped, and flow-tested to ensure crisp, leak-free operation. A printed performance report ships with every assembly so you know exactly what’s going back on your machine.