Swing Gearbox for Excavator Volvo VOL55 — Replacement Unit
The Swing Gearbox for Excavator Volvo EC55 is a high-performance planetary reduction unit designed to deliver reliable, smooth, and high-torque rotation for 5-ton class excavators. Engineered as a direct OEM replacement, this swing gearbox ensures precise fitment with no modification required, matching original mounting dimensions and performance standards. Built with case-hardened alloy steel gears and fully load-tested before shipment, it provides long service life and stable operation under demanding working conditions. Compatible with Volvo EC55, EC55B, and EC55C models, this replacement swing drive gearbox is ideal for maintenance, repair, and aftermarket applications where durability and interchangeability are critical.
Product Overview — Volvo EC55 Swing Gearbox
The Volvo VOL55 is a 5-tonne class compact excavator produced from 2001 onward across multiple generations (EC55, EC55B, EC55C). The swing gearbox — also called the swing drive gearbox or swing reducer — is the planetary reduction unit that converts the high-speed output of the hydraulic swing motor into the low-speed, high-torque rotation that drives the excavator's upper structure around the slew ring. At 5 tonnes operating weight, the EC55 uses a 3-stage compact planetary swing gearbox of approximately 58–62 kg unit weight, paired with a two-speed hydraulic swing motor.
Our swing gearbox excavator replacement is manufactured to the same dimensional specification as the OEM unit, confirmed against the VOE14529547 and SM60-5M reference numbers. It is also directly compatible with Volvo EC55B and EC55C models across all production generations, as well as the Volvo EC60 (same platform gearbox), and the SM60-5M cross-reference covers several Hitachi and CAT compact excavator equivalents in the same weight class.
Installation and Working Principle of the Slewing Gearbox
The slewing gearbox is mounted on the upper part of the excavator and is responsible for controlling the machine's rotation. The gearbox operates on the principle of gear transmission, transferring power from the engine to the excavator's upper structure. In addition, the gearbox includes a hydraulic system to help ensure smooth machine operation.
Compatible Brands & Models
Send your machine serial number to confirm the exact variant before ordering. All cross-references below are based on dimensional interchangeability — confirm output pinion tooth count before installation.
- EC55 / EC55-2 / EC55B / EC55C
- EC60 (same platform gearbox)
- Ref: VOE14529547
- Model No.: SM60-5M
- Hitachi ZAX55 (verify serial)
- CAT E55B (verify serial)
- PC55MR-3 (verify)
- PC58UU (verify)
We do not sell Volvo or Komatsu OEM products. Brand names are used for identification and compatibility reference only.
Technical Specifications
Confirm excavator model, serial number prefix, and gear ratio from the existing unit nameplate before ordering.
Key Advantages — Why Choose Our Swing Drive Gearbox
Frequently Asked Questions
Verified Customer Reviews
"Ordered a VOL55 swing gearbox for our EC55B on a compact pipeline jobsite in Western Australia. Sent the serial number and had a dimensional drawing back within 3 hours. Unit arrived by air in 7 days. Bolted straight on — matched perfectly. Machine was back in the trench the following morning. Test certificate was in the box, which our site engineer needed for the audit file. Simple, fast, correct."
"My EC55 started making noises that sounded expensive. I ordered this swing gearbox at 9pm on a Tuesday, received the dimensional drawing by Wednesday morning, and by the following week the machine was spinning silently again. My mechanic asked where I sourced it. I said 'the internet.' He looked suspicious. The gearbox has now run 800 hours. My mechanic has stopped looking suspicious. Five stars. Would internet again."
Frequently Ordered Together
Order VOL55 Swing Gearbox — Response in 24 Hours
Ready to Get Your Volvo EC55 Running Again?
Send your EC55 serial number (or full model designation) and shipping destination. We confirm the correct variant, supply a dimensional drawing, and return price + lead time within 24 hours. MOQ 1 unit. Air freight to Canada, Australia, USA, and Europe.
✓ Drawing Before Order
✓ 100% Load-Tested · MOQ 1
✓ Air Freight 5–8 Days
📧 [email protected] · Canada Planetary Gear Drive Co., Ltd · T/T · Western Union · Escrow
Related Searches
Volvo EC55 swing gearbox · VOL55 swing drive gearbox replacement · excavator swing gearbox Volvo EC55 · VOE14529547 aftermarket · Volvo EC55 swing reducer supplier Canada Australia
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