The OEM 531-7047 track roller for CAT 305E2 and CAT 306E mini excavators has become one of the most urgently needed and high-volume undercarriage parts in European and North American construction machinery markets. In 2026, local machinery repair shops, equipment rental companies, wholesale parts distributors and engineering contractors are facing serious stock shortages of genuine alternative track rollers. Stable OEM-quality replacement rollers are in huge demand for batch replenishment and long-term bulk orders.
As a core load-bearing undercarriage component, this OEM track roller bears the full machine weight, stabilizes the track system, reduces walking vibration, and resists abrasion and impact on muddy, gravel, rocky and rugged construction sites. Different from ordinary aftermarket parts, our 531-7047 track roller strictly follows OEM production standards, with consistent size, installation parameters and assembly tolerance as the original parts, realizing plug-and-play replacement without modification.
- OEM Part No.: 531-7047
- Fit Models: CAT 305E2, CAT 306E (5-6 ton mini excavator)
Outer Diameter: 142mm
Roller Width: 126mm
Axle Diameter: 45mm
Hole Spacing: 168mm
Unit Weight: 13.8kg
Hardness: HRC 58-62
Layer Depth: 8-12mm
Material: 50MnB high manganese steel integral forging
Sealing Structure: Double floating oil seal, anti-leakage, anti-sand and anti-mud
Adopting overall forging and deep quenching heat treatment technology, this track roller features high hardness, strong toughness and wear resistance. The upgraded double floating oil seal effectively isolates sediment, sewage and dust, avoiding common failures such as oil leakage, shaft rust and premature roller wear. It supports long-time continuous operation in harsh working conditions, with a factory warranty of 12 months under normal use.
To meet diverse market demands, we supply a full range for mainstream brands in Europe and America:
Kubota KX040-4 | OEM No. RD118-21700 | OD 132mm, Width 118mm, Weight 11.2kg
Bobcat E45 | OEM No. 7013575 | OD 136mm, Width 121mm, Weight 12.1kg
Yanmar VIO55 | OEM No. 772450-37300 | OD 130mm, Width 115mm, Weight 10.7kg
We are a direct Chinese manufacturer supporting OEM and ODM customization services. All products comply with CE and ISO9001 international quality standards. Sufficient spot inventory supports large-volume bulk orders and fast delivery, which perfectly solves the problem of out-of-stock and long delivery cycles for European and American dealers. With reliable OEM quality, standardized size parameters and competitive factory wholesale prices, our mini digger track rollers are the top-choice hot-selling chassis parts for North American and European markets. Welcome global distributors to inquire about bulk prices and technical drawings.
We will be showcasing samples of these popular rubber tracks at the 2026 Bauma China exhibition (Booth W4.891) from November 24 to 27. We invite buyers from around the world to visit our booth to inspect the products firsthand, verify OEM part numbers and specifications, and discuss bulk purchasing and rapid delivery options.
Sales Manager: Tin Fu
Email: sales@fortune-parts.com
Mobile/Whatsapp: +8617750909080
Website: https://www.fortune-parts.com
Post time: Oct-12-2026