Strong Market Demand for Kubota KX057-4 Track Roller, Full OEM Number and Dimensional Specifications Released

Market trend analytics shows that Kubota KX057 4 track roller OEM part number RD411 21740 is one of the highest volume undercarriage wear parts across European and North American compact excavator aftermarket. The Kubota KX057 4 5 ton compact excavator enjoys huge installed base throughout USA, Canada, United Kingdom, Germany, France and Nordic countries. It is widely deployed in landscaping projects, residential renovation, municipal trenching work and equipment rental fleets.

Working frequently on gravel grounds, lawn soil and mixed abrasive terrain, bottom track rollers bear the full machine weight and suffer fast abrasion. Worn out track rollers will trigger abnormal walking noise, rubber track premature damage, track wobble and unexpected machine downtime. Many local spare parts wholesalers and repair workshops face frequent stock shortage for RD411 21740, generating continuous urgent buying inquiries from importers, rental company procurement and independent service shops.

Our factory manufactures this high demand bottom roller strictly following original OEM drawing specifications. The roller body adopts high strength alloy cast steel with deep high frequency quenching treatment. Equipped with proven floating oil seal assembly and dual dust proof design, it effectively blocks sand, mud and water ingress, extending service life under heavy cyclic rental fleet operating conditions. Every finished piece goes through material inspection, hardness test, dimension calibration and sealing leakage pressure test before shipment.


Hot selling Full Product Specifications
Product Name: Kubota KX057 4 Track Roller (Bottom Roller)
OEM Part Number: RD411 21740
Compatible Machine Models: Kubota KX057 4, KX057 4CA, KX161 3, U45 3, U50 3, U55 4 mini excavator
Outer Diameter: 135 mm
Roller Width: 130 mm
Shaft Diameter: Φ42 mm
Net Weight: 13.2 kg
Material: 40Mn2 alloy cast steel
Surface Hardness: HRC 50 56
Quenching Depth: 6 9 mm
Sealing Structure: Floating oil seal + double dust proof ring
Warranty: 1500 working hours
Application: 5 ton rubber track mini excavator for landscaping, municipal jobs, rental fleet operation

We maintain large ready stock inventory for OEM RD411 21740 track roller to fulfill urgent bulk orders for EU and North America clients. Small trial orders and full container wholesale orders are both acceptable. Matching undercarriage components including idler, carrier roller, sprocket and rubber track are also available for one stop chassis rebuild orders.

In European Union and North American markets, massive quantities of 4 6 ton Kubota compact excavators are entering regular maintenance cycles year by year. Market demand for Kubota mini digger undercarriage replacement parts will keep stable growth in next several years. Overseas importers and distributors may send machine model or OEM part number to acquire dimension drawings, material test reports and factory FOB wholesale quotation.


Business Contact

Sales Manager:Tin Fu

Mobile/Whatsapp:+8617750909080

Post time: Sep-23-2026