EP-Swing Reduction Gearbox for Hyundai R130 Excavator
The EP-R130 swing reduction gearbox is designed as a direct replacement for Hyundai R130 excavators, ensuring precise OEM dimensional compatibility and easy installation. It features a multi-stage planetary gear structure that delivers stable torque output and efficient speed reduction for reliable swing performance.
All internal gears are manufactured from 20CrMnTi alloy steel and heat-treated to HRC 58–62, providing excellent wear resistance and long service life under heavy-duty conditions. The unit is supplied fully assembled, tested, and ready for installation, with complete inspection support.
Suitable for construction, mining, and machinery repair applications, it offers dependable operation and flexible global delivery solutions.
1. Technical Specifications — EP-Swing Reduction Gearbox
| Specification | Details |
|---|---|
| Applicable Industries | Building Material Shops, Machinery Repair Shops, Manufacturing Plant, Farms, Retail, Construction works |
| Showroom Location | None |
| Video outgoing-inspection | Provided |
| Machinery Test Report | Provided |
| Marketing Type | Ordinary Product |
| Warranty | 1 Year |
| Category | Construction Machinery Parts |
| Equipment | R130 Excavator |
| Item Condition | New |
| Application | Replacement |
| Inner Packing | Wrap by Plastic Film |
| Outer Packing | Carton, Plywood Case |
| Delivery | By Sea, Air, Carrier |
| MOQ | No Limited |
| INSTALLATION SITE | Swing Reduction Gear Box |
| Packaging Details | INNER PACKING: Wrap by plastic film, clear label for each item. OUTER PACKING: Carton or Plywood Case |
| PACKING SIZE | Depend on packing type |
2. Compatible Excavator Models Of Swing Reduction Gearbox
Beyond the Hyundai R130 Swing Reduction Gearbox, our planetary swing gearbox product family covers a wide range of tonnage classes and brands. The table below lists models grouped by operating weight. Contact our technical team to confirm the correct part reference for your machine.
| Below 10t | 10t and Up | 20t and Up | 30t and Up | 40t and Up | 50t and Up |
|---|---|---|---|---|---|
| E307B | E315 | DH220-5 | E330 | DH420-7 | DH500-7 |
| E70B-7 | EX120-5 | DH225-7 | E330C | CE420-6 | EC700 |
| EX60-2 | ZX120 | DH225-9 | E330D | EC460 | |
| ZX60 | E200B | E320C | E336D | EC460B | |
| ZX70 | SK135 | E320D | PC300-7 | PC400-6 | |
| ZX75 | PC120-6 | E318C | PC360-7 | PC400-7 | |
| ZX80 | PC160-7 | EC210 | PC300-8 | PC450-7 | |
| ZX85 | R130 | EC240 | SK330-8 | ||
| PC40-7 | DH150-7 | EC240B | SK350-8 | ||
| PC56 | DH258 | EC290 | EC350 | ||
| SK55 | SH120 | PC200-7 | EC360B | ||
| SK60-5 | SH280 | PC200-8 | R300 | ||
| SK60-8 | CX130 | R210-7 | DH300-7 | ||
| SK70 | FR150 | JS200 | DX380 | ||
| EC55 | SY135 | SK200-8 | SH350-5 |
3. Five Essential Facts About This Swing Reduction Gearbox
01 — Drop-In Fit
Engineered to OEM dimensional tolerances for Hyundai R130, enabling direct replacement without custom fabrication or line boring.
02 — Multi-Stage Planetary Design
Two-stage planetary gear reduction delivers high torque output at low output RPM, managing the rotational inertia of a fully loaded excavator house.
03 — Heat-Treated Alloy Gears
All internal gears are produced from 20CrMnTi alloy steel, carburized and quenched to HRC 58–62, providing exceptional bending strength and surface hardness.
04 — Fully Assembled, Ready to Install
Supplied complete with motor shaft and motor housing. No loose sub-assemblies. Tested before dispatch to confirm free rotation and proper engagement.
05 — Global Logistics Support
Ships worldwide by sea, air, or carrier with full commercial documentation — including packing list, commercial invoice, and bill of lading for smooth customs clearance.
4. Five Key Product Advantages
Precision Machined Tolerances
Every component is machined on CNC centers and held to ±0.01 mm tolerances, ensuring quiet operation and even load distribution across all planetary stages of the swing reduction gearbox.
Superior Surface Hardness
Carburized and quenched gear teeth reach HRC 58–62, preventing case crushing under repeated shock loads — a common failure mode on busy construction and mining sites.
Sealed for Field Conditions
IP54-rated sealing protects internal components from dust ingress and water splash — important for excavators working in muddy trenches, quarries, and demolition environments.
Compatible with All Swing Motor Brands
The output flange and motor mounting dimensions match OEM specifications, so the unit accepts the original hydraulic swing motor without requiring adapter plates or modifications.
Rapid Lead Time
In-stock units dispatch within 4–7 business days. Bulk production orders are fulfilled in 10–35 days depending on quantity, backed by proforma invoice, sea-freight documentation, and free-fumigation plywood casing.
5. How the Swing Reduction Gearbox Works?
The swing reduction gearbox — also referred to as a swing drive gearbox or slewing gearbox — sits at the center of the excavator's upper structure, bridging the hydraulic swing motor and the slew ring. When the operator turns the cabin, pressurized hydraulic fluid enters the swing motor, which spins a high-speed input shaft into the gearbox. Inside, that rotational energy passes through two successive sets of planetary gear stages, each one stepping down the speed while multiplying torque. The first stage's sun gear drives a ring of planet gears orbiting a fixed ring gear; the second stage repeats the same principle but at a lower input speed. The result is a slow, high-torque output that meshes through a pinion gear with the swing bearing's internal teeth, physically rotating the superstructure.
On the Hyundai R130 platform, this excavator swing gearbox must manage an upper-structure rotating mass of several tonnes through tight 180° sweeps, often dozens of times per hour on active sites. The planetary layout is ideal for this: compact radial dimensions, coaxial input/output alignment, and the ability to distribute load across multiple teeth simultaneously — reducing peak tooth stress and extending service intervals significantly compared to parallel-shaft designs.
Because all planets share the load equally, vibration is minimal and oil film integrity is maintained even during abrupt directional reversals. The sealed housing retains approximately 4.5 liters of gear oil, which should be inspected every 500 operating hours and changed every 2,000 hours or annually, whichever comes first — following Hyundai's maintenance schedule for the R130 Swing Reduction Gearbox.
6. Material Composition & Manufacturing Standards
Material selection is the foundation of longevity in any swing drive gearbox. The EP-R130 Swing Reduction Gearbox uses 20CrMnTi chromium-manganese-titanium alloy steel for all load-bearing gear teeth — a grade widely specified in Chinese national standard GB/T 5216 and known for its excellent hardenability, toughness after quenching, and resistance to case crushing under dynamic loading. Sun gears, planet gears, and ring gears are all made from this same alloy, ensuring consistent thermal expansion behavior and predictable wear patterns across the life of the unit.
The housing is cast from QT500-7 ductile iron per ISO 1083, which offers the machinability of grey iron with substantially higher elongation and impact resistance. This matters in field conditions where an excavator boom strike or operator error could otherwise crack a brittle housing. Internal shafts and carriers are produced from 42CrMo4 (equivalent to AISI 4140) for its high fatigue strength under reversed bending and torsional loads.
Seals are rated for the full operating temperature range of -20°C to +80°C and resist degradation from ISO VG 220 gear oil. Bearings are supplied from internationally recognized brands compatible with NSK and SKF specifications, held to Grade P6 dimensional tolerances. Before shipment, each completed Swing Reduction Gearbox undergoes a no-load spin test to verify free rotation, correct oil level, and seal integrity.
Gear Steel
20CrMnTi — GB/T 5216 & DIN 21MnCr5 equivalent. HRC 58–62 surface, tough core.
Housing
QT500-7 ductile iron — ISO 1083. High impact resistance, precision bored bores.
Shafts & Carriers
42CrMo4 alloy steel — ISO 683-2 / AISI 4140. High fatigue and torsional strength.
Seals
FKM / NBR compound, rated -20°C to +120°C, ISO VG 220 oil compatible.
Bearings
Grade P6, NSK / SKF-compatible. Pressed, retained, and pre-loaded at assembly.
7. Application Scenarios
The EP-R130 excavator swing gearbox is designed for any environment where the Hyundai R130 operates. Below are the most common deployment contexts our customers report.
Urban Construction & Foundation Work
In city-center excavation for basements, piling, and utility trenching, the R130 performs rapid 180° sweeps throughout a working shift. A high-cycle swing gearbox with precise torque control is non-negotiable to maintain cycle times and avoid overloading the slew ring bearing on confined sites.
Road & Highway Infrastructure
Roadside drainage channels, culvert installation, and embankment grading all demand precise, repeatable swing positioning. The planetary swing gearbox delivers consistent rotational inertia management, helping operators place loads accurately beside active traffic lanes without drift or overswing.
Mining & Quarrying Operations
Surface mining operations use 10–15 tonne excavators for bench cleanup and material loading. The slewing gearbox in these environments must withstand dusty, abrasive atmospheres and operate through extended shifts. The IP54 seal rating and hardened gears make the EP-R130 Swing Reduction Gearbox a solid choice for quarry maintenance managers seeking to minimize swing gearbox replacement Colombia-style procurement cycles or elsewhere.
Demolition & Site Clearance
Demolition produces sudden shock loads when bucket teeth impact reinforced concrete. The multi-stage planetary arrangement spreads these impacts across several gear meshes simultaneously, protecting the drive from the reverse-torque spikes that destroy single-stage swing reducers in this application within months of replacement.
Agricultural Land Development
Land leveling, irrigation channel construction, and field drainage projects in the agriculture sector regularly deploy R130-class machines. Swing frequency is moderate but sessions are long. The robust oil capacity and extended oil-change interval on the EP-R130 reduce servicing stops in remote farming areas far from repair workshops.
Machinery Repair & Fleet Rebuild
Repair shops specializing in used excavator refurbishment stock swing reduction gearboxes as consumable rebuild components. The drop-in OEM compatibility and competitive MOQ of just 1 unit make the EP-R130 Swing Reduction Gearbox practical for both single-machine repairs and bulk fleet overhaul programs, including construction machinery swing gearbox Colombia procurement from distributors in Bogotá and Medellín.
8. Regulatory Compliance — What Buyers Should Know
Construction machinery parts are subject to various national and international standards depending on the intended market. Below is a summary of the key frameworks relevant to swing gearbox procurement and operation.
United States
OSHA 29 CFR Part 1926 governs excavator operation on US construction sites, requiring machinery to be maintained in safe working condition. ANSI/ASME B30.5 sets standards for mobile cranes and excavator swing systems. AGMA 6010 provides the gear rating methodology applicable to swing reduction gearboxes used in the US market.
European Union
Machinery Directive 2006/42/EC requires that replacement parts fitted to CE-marked excavators maintain the original machine's conformity. EN ISO 9283 (manipulating industrial robots) and DIN 3990 (gear load capacity) are frequently referenced for gearbox qualification. RoHS 2011/65/EU may apply to electrical components within the swing drive assembly.
Latin America
Colombia's NTC (Normas Técnicas Colombianas) follows ISO frameworks for mechanical components. Resolution 1409 of 2012 governs safety for work at height, impacting excavator-mounted equipment. Brazil's ABNT NBR 15.619 and ABNT NBR 9050 touch on construction equipment safety. In Mexico, NOM-004-STPS-1999 covers machinery safety applicable to excavator maintenance.
Australia & Middle East
Australia's AS 4024 machinery safety standard series applies to plant equipment including excavators. AS 2759 covers steel wire rope use near swing components. In the UAE and Saudi Arabia, SASO (Saudi Standards Authority) aligns with ISO standards for imported construction machinery parts, requiring valid test reports for B2B customs clearance of swing gearbox shipments.
International Quality Standards
ISO 9001:2015 quality management, ISO 1328-1 gear accuracy grading, ISO 6508 Rockwell hardness testing, IEC 60529 ingress protection (IP rating), and ISO 683 heat treatment standards all apply to this product's design and manufacturing process — ensuring it meets the technical expectations of professional procurement teams worldwide.
9. About the Manufacturer
We are a specialist manufacturer of planetary gearboxes and excavator swing drive components. Our product range covers swing reduction gearboxes, travel reduction gearboxes, final drive assemblies, and planetary gearboxes for a broad spectrum of construction, mining, and agricultural applications. We supply both OEM-specification replacement units and custom-engineered solutions for non-standard or older excavator models. Every unit leaves our facility with a machinery test report and video inspection available upon request.
WorkShop
10. Related Products — Complete Drivetrain Solutions
Beyond swing drive components, we offer a full range of power transmission products compatible with construction and agricultural machinery systems. Our one-stop supply model means fewer vendors to manage and consistent technical documentation across your parts sourcing.
Worm Reducer
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Frequently Asked Questions
Q1. What exactly is a swing reduction gearbox and how does it differ from a travel gearbox on an excavator?
A swing reduction gearbox (also called a swing drive gearbox or slewing gearbox) controls the rotation of the excavator's upper house around its undercarriage. A travel gearbox, by contrast, drives the track sprockets to propel the machine forward or backward. Both use planetary gear reduction internally, but their housing geometry, output interface, and torque ratings differ significantly. The swing drive gearbox connects to a pinion gear that meshes with the slew ring; the travel gearbox connects to the track chain via the sprocket. Never interchange the two — a common mistake in secondhand parts markets.
Q2. Can the swing gearbox be used for mining equipment in Colombia, and does it meet local equipment safety requirements?
Yes. The EP-R130 Swing Reduction Gearbox is well-suited to Colombian mining applications, including open-pit coal, nickel, and limestone operations where R130-class excavators are common. Colombian mining operators are governed by Decreto 1886 de 2015 (mining safety regulations) and Resolución 90708 of UPME, which require that replacement machinery components maintain the original equipment's structural integrity. Our unit meets this requirement as a direct dimensional and functional replacement for the OEM swing reduction gearbox, preserving all original safety ratings of the Hyundai R130 design. We can provide a machinery test report to support any site safety audit documentation.
Q3. How do I know which excavator swing gearbox fits my machine if I only have the equipment model number?
The model number (e.g., Hyundai R130) is usually sufficient to identify the correct swing gearbox in our catalog, because OEM dimensions are standardized per model series. However, for excavators that have undergone swing motor or swing bearing upgrades, we recommend providing the machine serial number, the current swing motor make and model (if known), and a photo of the existing gearbox mounting flange. Our engineering team will cross-reference against our compatibility database and confirm the correct part before you place an order.
Q4. What type of gear oil should I use for a planetary swing gearbox on an R130 in hot climates like Colombia or Texas?
We recommend ISO VG 220 gear oil (EP grade) for standard operating temperatures between 0°C and 40°C ambient. In extremely hot environments — such as quarry sites in coastal Colombia or summer construction in Texas where ambient temperatures regularly exceed 40°C — consider ISO VG 320 to maintain adequate film thickness at elevated sump temperatures. Avoid mixing oil brands or viscosities. Change the oil after the first 100 hours on a new gearbox to flush any break-in metal particles, then every 2,000 hours or annually thereafter.
Q5. When should I replace the swing gearbox versus just rebuilding it with new seals and bearings?
Replacement is generally more cost-effective than rebuild when the gear teeth show visible pitting, scuffing, or chipping — damage that cannot be corrected by new seals. An oil analysis showing high iron or chrome particle counts above 150 ppm is another indicator that internal wear has progressed beyond what seal and bearing replacement can fix. Rebuilding makes sense only when the housing is undamaged and teeth surfaces are intact, but even then, a fully assembled new unit often costs less than the labor and parts for a professional rebuild, especially when machine downtime cost per day is factored in.
Q6. How does the EP-R130 swing drive gearbox compare to OEM Hyundai parts in terms of quality and durability?
The EP-R130 Swing Reduction Gearbox uses the same 20CrMnTi alloy steel and the same carburizing heat treatment process that Hyundai OEM specifications call for. Our machining tolerances on critical bore diameters are held to ±0.01 mm on CNC machining centers, equivalent to ISO IT6 grade. The key practical difference is that we do not carry a brand licensing cost into the price, which means equivalent engineering at a significantly lower acquisition cost. Several fleet operators running both OEM and aftermarket units on the same jobsite have reported comparable service intervals at 30–40% lower component cost per gearbox.
Q7. How do I properly install a replacement swing reduction gearbox on a Hyundai R130 without voiding the warranty?
Installation follows four main steps: (1) Drain the old gearbox oil completely before removal and clean the mounting face. (2) Torque all mounting bolts to the Hyundai R130 service manual specification — typically M12 class 10.9 bolts at 85–95 N·m — using a calibrated torque wrench, not an impact gun. (3) Fill the new gearbox with the correct grade and volume of gear oil through the fill port (4.5 L of ISO VG 220 EP gear oil) before running. (4) Run the swing at low engine speed for 10 minutes each direction before putting the machine under full load. Incorrect torquing or running without oil are the two most common installation errors we see in warranty claims.
Editor: PXY
