EC360B Volvo EC480D Excavator Track Carrier Roller Forged 50Mn Steel Induction Hardened HRC 48-55 Undercarriage Part

The YT EC360B track carrier roller is an aftermarket top roller developed for Volvo EC360B and EC480D excavators, machines that pull heavy duty cycles in quarries and on large construction sites. Positioned above the track chain, this roller supports the return run so the chain keeps even tension while the excavator travels and slews. A firm, rolling support also protects the top of the track frame from the constant beating of a loose chain.

YT manufactures the EC360B carrier roller as a forged 50Mn steel assembly with the tread induction hardened to HRC 48-55. The complete unit includes the shaft, bushings and seals, and its dimensions follow the Volvo track geometry for a direct exchange. Customers with EC480D machines should verify the roller diameter and width with YT before ordering, because the two models use different track frame widths in some build years.

• One-piece forged construction: the roller starts as a solid 50Mn forging, avoiding the weld joints found on some fabricated rollers.
• Wear-resistant tread: induction hardening to HRC 48-55 gives the rolling surface a long working life on abrasive tracks.
• Stable metallurgy: controlled quenching and tempering create consistent hardness from roller to roller within the batch.
• Heavy-duty seal package: the assembly uses seal rings that resist the dust and water common in quarry environments.
• Dimensional fidelity: machining tolerances are held to the EC360B track drawing so installation is straightforward.
• Full assembly supply: rollers ship with shaft and bushings fitted, saving the workshop from sourcing small parts separately.

The models above are just for reference, we can't list all models here. We can supply more products as your requirements. Please feel free to send us your inquiry.

*Values are reference; OEM part number confirmation advised before ordering.

*Values are reference; OEM part number confirmation advised before ordering.

1. 50Mn raw material is verified by spectral analysis, and only certified heats proceed to cutting.
2. Forging presses form the hot billet into the roller blank in one closed-die operation.
3. Heat treatment begins with normalizing, followed by quenching and tempering to stabilize the core.
4. CNC machining produces the bore, tread and flange faces with the required accuracy.
5. The tread is hardened by induction coils and quenched to reach the target surface hardness.
6. Grinding restores the final diameter and a smooth finish for even chain contact.
7. Assembly work fits the shaft, bushings and seals, then greases the roller correctly.
8. Finished rollers undergo hardness testing, magnetic particle inspection and gauging.
9. Anti-rust oil is applied before the roller is wrapped and prepared for export.

XIAMEN YINTAI MACHINERY CO., LTD. is the ISO 9001:2015 certified company behind the YT brand, active in the undercarriage business since 2011. Its factory in Fujian, China operates forging, CNC machining, heat treatment and assembly departments, meaning the EC360B carrier roller is controlled from raw steel to finished product. Short internal logistics also reduce lead time compared with buying from trading companies.

The manufacturer employs 50-100 people and generates USD 10-20 million in yearly sales, with exports representing 90-100% of the total. Customers include importers, construction contractors and maintenance workshops in dozens of countries, and YT routinely supports SGS or third-party inspection. OEM/ODM branding and customized roller specifications are handled through the same quality system.

• Quarry production fleets: YT supplies rollers with hardened treads and sealed hubs to survive continuous loading and haul-road travel.
• Component replacement strategy: owners replace only the failed carrier roller instead of buying a new track frame, keeping repair costs low.
• Aftermarket sourcing desk: importers get a stable EC360B roller supply with consistent quality and packaging ready for resale.
• Overhaul packages: when an excavator enters the shop for a full track job, YT bundles rollers, idlers, links and shoes in one order.
• Expedited service parts: urgent orders for working machines can be dispatched by air freight from the YT warehouse at Xiamen.

Volvo EC360B and EC480D excavators fitted with YT carrier rollers serve in aggregate quarries, highway construction, mining support work and large demolition projects. The top roller keeps the return chain strand taut, which reduces the whipping effect when the excavator travels at speed between work faces. It also eases the load on the track adjuster and idler, contributing to steadier tension and longer life for the whole undercarriage system.

Q1: Will this roller fit both the EC360B and the EC480D?

The YT EC360B roller is dimensioned for the EC360B frame. For an EC480D, please measure the old roller and send the figures to YT so we can confirm whether the wider EC480D variant is required.

Q2: Is the roller supplied complete or do I need extra parts?

It is supplied as a complete assembly including the shaft, bushings and seals. You only need the original fasteners and the standard workshop tools for installation.

Q3: How does the YT roller price compare with the Volvo original?

As an aftermarket equivalent the YT roller is generally more economical than the original part, while keeping comparable hardness and dimensional specifications. Always confirm the OEM part number before purchase.

Q4: What is your policy for samples and testing?

Sample orders are accepted from one piece upward. Many new customers first test a single roller, and the sample cost is deducted from the first quantity order.

Q5: What are the shipping terms and the warranty period?

Standard delivery is 5-7 days for stock and 20-30 days for production. The warranty covers 12-18 months against defects in material and workmanship, with sea or air shipment arranged according to urgency.

EC360B carrier rollers are individually oiled and film-wrapped, then packed on steel pallets or export-grade wooden pallets with steel strapping for ocean containers. Each unit is inspected for hardness, dimensions and seal integrity before release, and batch test certificates can accompany the shipment. YT welcomes third-party quality audits and offers OEM/ODM packaging to suit distributor branding requirements.

• Through quench-tempering processes to ensure excellent mechanical properties, high strength and superior wear resistance to bending and breakage.
• Advanced Germany KUKA automatic machining center, horizontal and vertical CNC machining ensure the accuracy of assembly dimensions. This is to maximize the life span of each component and minimize production cost.
• MAKZAK Precison Finishing Machinery from Japan makes sure we have steady and good welding quality.
• We have complete production line and professional designers and working team. We can also produce any requested parts according to your blue print or samples.