Heavy Load Capacity and High Wear Resistance Carrier Roller for DOOSAN DX225

Doosan DX225 Carrier Roller, Waterproof Dustproof Anti-Corrosion Top Roller, Leak-Proof Undercarriage Spare Parts for Southeast Asia Humid Muddy Sites, OEM Replacement In Stock.

This aftermarket carrier roller is tailor-made for all configurations of DOOSAN DX225, including DX225LC-3, DX225LC-5 and DX225LCA medium-sized crawler excavators. As a core undercarriage wear part, it bears the full weight of the upper track chain, prevents track sagging, and maintains stable track operation during long-distance driving, slope climbing and heavy material excavation. Most generic carrier rollers fail prematurely due to thin shell thickness, inferior bearing lubrication and insufficient surface hardness under frequent heavy-load cycles. Our upgraded DX225 carrier roller solves three core points: overload deformation, tread surface abrasion and internal oil leakage, which are the top three failure causes of original carrier rollers in high-intensity construction scenarios.

Core Structural & Material Technical Specifications

1. Main Shell Raw Material: Integral forged 40Mn2 manganese boron alloy steel. Compared with ordinary cast steel used by low-cost suppliers, integral forging eliminates internal air holes and material layering, improving static load resistance by 32% and avoiding shell cracking under eccentric heavy load on rugged mountain roads.
2. Surface Wear Resistance Treatment: Medium-frequency integral induction hardening. The hardened layer will not peel off under continuous friction with track chains, solving rapid tread polishing and track derailment risks in gravel, sandstone and iron ore working sites.
3. Internal Load-Bearing Structure: Bimetallic copper alloy bushing + high-strength integral shaft. The copper bushing reduces rotational friction coefficient by 41% compared with cast iron bushings, supporting a single roller static bearing load up to 68kN, meeting the full-load walking load demand of 22-ton DX225 excavator.
4. Sealing & Lubrication System: Double floating metal oil seals + nitrile rubber auxiliary sealing rings. Adopts closed permanent grease pre-lubrication filled before factory delivery. It effectively blocks mud, slurry, dust and groundwater from entering the internal rotating cavity, eliminating shaft rust, grease dilution and abrasive particle wear in muddy wet working conditions.

FAQ

1. How can I be sure the part will fit my excavator?
Give us correct model number/machine serial number/ any numbers on the parts itself. Or measure the parts give us dimension or drawing.

2. How about the payment terms?
We usually accept T/T or Trade Assurance. other terms also could be negotiated.

3. What is your minimum order?
It depends on what you are buying. Normally, our minimum order is one 20' full container and LCL container (less than a container load) can be acceptable.

4. What about Quality Control?
We have a perfect QC system for the perfect products. A team who will detect the product quality and specification piece carefully, monitoring every production process until packing is complete, to ensure product safety into container.

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Heavy Load Capacity, High Wear Resistance, Carrier Roller, Waterproof Dustproof Anti-Corrosion, Leak-Proof