��【A Must-See for Construction Machinery Professionals】Kubota TOP ROLLER (Carrier Roller Assembly) is here! Solving the ROLLER compatibility issue for multi-brand mini excavators, the three core part numbers RD411-22900/RD547-22900/RD461-21900 are interchangeable, precisely matching popular models like KX121-3/U45/U55/KX161!
Core Product: Kubota RD411-22900 TOP ROLLER (Carrier Roller Assembly)
✅ Main Part Number: RD411-22900 (Core Compatible Part Number)
✅ Alternative Part Numbers: RD547-22900, RD461-21900 (interchangeable with the main part number, offering greater flexibility in procurement to avoid stockouts of a single part number. A complete compatibility table for models including KX121-3/U45/U55/KX161 is available via private message)
�� Four Core Advantages, Addressing Pain Points in Maintenance, Procurement & Usage:
【Wide Compatibility, No Model Restrictions – Covers Popular Models Like KX121-3/U45/U55/KX161】
Compatible with the full Kubota series (including basic models KX121-3, KX161, U45, U55, and upgraded versions like U45-3, U55-4, KX040-4 <serial number ≤25914>, KX161-3), as well as multi-brand mini excavators from Airman (AX40/45/50U series), JCB (8040, 8045, 805.2, 60), Komatsu (PC35R-8, PC40R-8, etc.), and Hitachi (ZX30U-2, ZX50U, etc.). One TOP ROLLER fits over 20 common models, eliminating the need for separate inventory for KX121-3/U45/U55/KX161 and other models – reducing inventory costs for small and medium-sized repair shops/construction teams by 40%.
【Cost-Saving DIY Installation – Even Beginners Can Replace the ROLLER】
As a ROLLER assembly requiring no extra accessories, there’s no need for additional screws or gaskets. It comes with an original-style snap-fit structure, allowing direct replacement of old parts corresponding to RD411-22900/RD547-22900/RD461-21900. A matching installation manual (including model-specific installation diagrams for KX121-3/U45/U55/KX161 + FAQ) is provided. With a regular wrench, individuals can complete the installation of a single TOP ROLLER within 30 minutes, saving on on-site service fees from repair shops. No waiting for sudden ROLLER failures at the construction site – resume work the same day.
【Precise Compatibility with KX121-3/KX161, Eliminating Mismatch Risks】
For Kubota KX121-3 and KX161 models, there are no alternative part numbers for RD411-22900/RD547-22900/RD461-21900. It features 1:1 replication of original TOP ROLLER dimensions (wheel diameter tolerance ≤ 0.1mm). After installation, it perfectly engages with the track link and idler wheel, avoiding track misalignment, abnormal noise, and local excessive wear caused by ROLLER deviations. Operating stability of models like KX121-3/KX161 is improved by 30%, reducing subsequent maintenance frequency.
【High Durability & Wear Resistance – Protects the ROLLER Across Multiple Working Conditions】
The TOP ROLLER wheel is made of high-strength 50Mn alloy steel (hardness up to HRC55-60), with a double-layer high-temperature quenching + electrophoretic anti-rust coating on the surface. It is suitable for KX121-3/U45/U55/KX161 and other models operating in scenarios such as municipal muddy water, orchard humus, and mine gravel. Under normal use, its service life is 30% longer than ordinary ROLLERS (mostly made of 45# steel), with an average service life of 1.5-2 years – reducing the hassle of frequent TOP ROLLER replacements.
�� Whether for daily maintenance replacement of RD411-22900/RD547-22900/RD461-21900 ROLLERs, stockpiling TOP ROLLERs for models like KX121-3/U45/U55/KX161, or bulk purchases by repair shops (minimum order of 10 units, with wholesale prices available), this carrier roller assembly is a cost-effective choice!
Have compatibility questions? Want to check if your equipment (e.g., KX121-3, U45, U55, KX161) is compatible with RD411-22900/RD547-22900/RD461-21900? Feel free to leave a comment with your machine model + serial number – we’ll reply with compatibility results in seconds!
Post time: Sep-13-2025