Undercarriage Parts/Seals

Products & Range Coverage
A&S MACHINERY CO., LTD. delivers an extensive inventory of specialized seal components within our undercarriage parts catalog to support diverse heavy-duty equipment. Our product lineup covers a broad range of machine series and seal kit configurations, ensuring that every component meets rigorous Komatsu standards for sealing performance and preventive maintenance:
• Machine & Heavy-Duty Seal System Compatibility: Engineered for a broad range of Komatsu excavators and bulldozers, our seal solutions ensure exact material strength ratings, dimensional tolerances, and structural interface definitions for a 100% perfect match, rapid replacement, and factory-grade performance.
• Complete Heavy-Duty Seal & Repair Kit Range: 1. Floating (Duo-Cone) Seals: Featuring high-precision lapped sealing faces designed specifically to withstand heavy-duty rotational friction and harsh mining mud scouring; 2. Elastomeric O-Ring & Metal Rings: Providing uniform axial compression forces to compensate for mechanical wear and vibration through core elastic combinations; 3. Complete Undercarriage Seal Kits: Comprehensive sets of high-pressure oil seals and O-rings tailored for roller, carrier roller, idler, and sprocket overhauls.
• OEM & Aftermarket Options: Certified original equipment manufacturer Komatsu seal parts alongside high-performance aftermarket alternatives featuring reinforced wear-resistant alloy and temperature-resistant rubber formulations, delivering operational reliability and extended service lifespan at a cost-effective procurement point for global clients.

Supply Chain & Logistics
We maintain a robust operational infrastructure designed to support global seal component procurement through direct supply channels, delivering reliable stock availability and rapid dispatch to build trust with international equipment owners and repair facilities.
• Massive Inventory and Cross-Reference: We maintain large-volume stock of thousands of floating oil seals and undercarriage repair kits matching Komatsu mainstream excavators and bulldozers. Backed by barcode-enabled intelligent warehousing and Komatsu cross-reference databases, we guarantee precise matching and immediate dispatch upon order confirmation to fulfill routine maintenance and rapid replenishment needs for overseas fleet workshops and minimize equipment downtime caused by chassis oil leaks halting complete machine operations.
• Anti-Rust Coating and Vacuum Packaging: We implement specialized industrial packaging standards for the precision lapped sealing faces of all floating seals utilizing dedicated long-lasting anti-rust films, while elastomeric O-rings are independently sealed in light-shielding moisture-proof vacuum plastic bags and placed in impact-resistant cartons, ensuring absolute freedom from metal oxidation and rubber hardening during transcontinental ocean freight and warehouse storage environments.
• Heavy-Duty Cartoning and Palletization: Bulk heavy-duty oil seal and repair kit shipments are stacked on high-strength export fumigated wooden pallets, locked securely with multiple strands of high-strength cross-applied steel strapping, and protected with shock-absorbing foam filling inside cartons to guarantee absolute safety during long-distance transcontinental transport under extreme cargo handling jolts without crushing damage.
• Consolidated Sourcing for Undercarriage Overhaul Kits: We support overseas clients by consolidating large seal kits alongside matching full sets of track roller bodies, idlers, track chain assemblies, and sprocket rims into precise bundled undercarriage maintenance kits, achieving a one-stop purchasing model that pairs undercarriage sealing supplies with core casting components while significantly reducing comprehensive logistics costs for overseas workshops.

Engineering Solutions & Technical Support
Our technical framework focuses on resolving field-level operational challenges to eliminate equipment downtime, moving beyond simple parts distribution to deliver comprehensive engineering and service capabilities for asset health monitoring reliability.
• Application-Specific Seal Durability Solutions: We address extreme jobsite challenges—such as abrasive quartz sand and underwater muddy open-pit mines—where original seals suffer early groove scoring under abrasive slurry erosion. We also provide professional engineering upgrades utilizing high-hardness wear-resistant alloy cast iron floating rings paired with temperature- and tear-resistant fluoroelastomer O-rings, delivering exceptional debris exclusion.
• Troubleshooting and Maintenance Guidelines: We provide professional diagnostic guidance for issues like roller-side oil throwing, abnormal bearing noises, or seizing. This focuses on two critical protocols: 1. Clean Installation & Press-Fit Protocols: Technicians must keep lapped sealing faces absolutely clean (strictly prohibiting finger sweat, dust, or oil via dedicated cleaning agents) and use professional jigs for uniform, non-tilting press-fitting to preserve sealing integrity; 2. Oil Level & Temperature Inspection: Overseas service technicians must routinely inspect lubricant levels and temperature rises inside rollers/idlers during hot mine operations to prevent unobserved minor leaks from causing internal dry friction and bearing burnout.
• Expert Technical Support & Safety Guidelines: We provide comprehensive documentation, including roller/idler seal disassembly tool diagrams, O-ring compression standards, floating seal pressing jig specifications, and visual guides, assisting overseas technical personnel in executing standardized construction.

Call to Action & User Experience
Optimize your machinery sealing reliability and maintenance efficiency today by utilizing our interactive tools placed across strategic positions on our platform.
• Multi-Dimensional Intelligent Search and Specification Filtering: Benefit from advanced search functions supporting fast product filtering by Komatsu machine model (such as PC200, PC360, PC400, D65, D155, or D275), product categories (such as floating seals, Duo-Cone seals, seal kits, or undercarriage parts), or original equipment manufacturer part numbers to lock onto target products instantly.
• RFQ and Undercarriage Fleet Quotation: Access our fast-response interactive channels providing one-click bill of materials uploads for fleet Komatsu machinery undercarriage system overhaul seal kit and roller lists, including floating seal repair kits, track roller sets, idlers, and track chain assemblies, to receive bundled assembly quotations and international logistics freight estimates, fulfilling workshop routine overhauls and extreme condition spare parts reserve procurement requirements.
• Consultation and Support: Utilize our around-the-clock professional technical support channels staffed by senior Komatsu machinery undercarriage and sealing system experts to assist overseas clients in verifying non-standard seal outer diameter and thickness dimensions, designing customized high-pressure sealing reinforcement plans for extreme mining environments, and troubleshooting complex undercarriage oil leakage faults, ensuring cross-border procurement runs error-free.