Drivetrain/Service Brake

Products & Range Coverage
A&S MACHINERY CO., LTD. delivers an extensive inventory of specialized service brake systems and precision internal overhaul components to support diverse heavy-duty equipment (e.g., CAT 770/775/777 mining trucks, 950/966/980 loaders, and D6/D8 dozers):
• Machine & Brake System Compatibility: Engineered for a broad range of Caterpillar equipment series—covering wet multi-disc brake assemblies, control valves/actuators, and cooling circuit components—our parts ensure exact friction disc outer diameters, spline tooth counts, port thread specifications, and installation dimensions to guarantee a 100% perfect match.
• Complete Service Brake Components: 1. Brake Friction & Mating Plates: High-energy, high-thermal-capacity friction materials and high-strength mating steel plates ensuring strong grip and smooth deceleration under extreme braking loads; 2. Brake Pistons & High-Pressure Seal Kits: High-pressure and high-temperature-resistant fluoroelastomer/polyurethane seal rings and precision metal brake pistons, completely eliminating hydraulic internal leakage causing spongy braking; 3. Brake Cooling & Accumulator Components: Accumulator assemblies, charging valves, and cooling oil circuit distribution components designed specifically for high-intensity mining retardation.
• OEM & Heavy-Duty Aftermarket: We offer certified original equipment manufacturer Caterpillar service brake parts alongside rigorously tested heavy-duty aftermarket options verified through severe mining bench testing, delivering exceptional braking efficiency and extended lifespan at a cost-effective price point for global clients.

Supply Chain & Logistics
We maintain a robust operational infrastructure designed to support global machinery safety-critical component procurement through direct supply channels, delivering reliable stock availability and rapid dispatch to build trust with international buyers.
• Massive Inventory and Part Cross-Reference: We maintain large-volume stock of thousands of differing specifications of CAT mainstream heavy-duty mining truck and wheel loader service brake assemblies, friction discs, and seal overhaul kits. Backed by barcode-enabled intelligent warehousing and heavy machinery parts databases, we guarantee precise matching and direct dispatch upon order confirmation to minimize equipment downtime caused by brake system failure stoppages.
• Moisture-Proof and Heavy-Duty Crating: We implement specialized industrial packaging standards for paper-based and composite brake friction discs vulnerable to moisture absorption, seal rings prone to aging, and heavy brake assemblies vulnerable to impact, utilizing independent vacuum moisture-proof plastic sealing, vapor-phase corrosion inhibitor oil treatments, shock-absorbing blister tray fixtures, and heavy-duty fumigation-free wooden crates to ensure parts do not suffer moisture absorption, fluid leaks, or collision damage during transcontinental ocean or air transit.
• Consolidated Sourcing: We support overseas clients by consolidating brake system repair kits and cooling lines into precise bundled shipments alongside major overhaul assemblies including axle assemblies or transmissions, maximizing container space utilization and significantly reducing international freight costs for overseas repair facilities.

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.
• Application-Specific Durability Solutions: We address common field issues in extreme working environments, such as open-pit mining long downhill continuous heavy braking and high-dust muddy field operations, where original brake friction discs carbonize and degrade rapidly due to excessive thermal loads, and seal rings experience internal leakage from high-temperature aging. We also provide professional engineering upgrades, including extreme-high-temperature-resistant sintered bronze brake discs and high-pressure anti-aging fluoroelastomer seal upgrade solutions.
• Troubleshooting and Maintenance Guidelines: We address common user concerns regarding braking anomalies and failures by providing professional diagnostic and replacement guidance. This includes comprehensive failure diagnostics helping technicians determine whether faults originate from seal ring damage, insufficient accumulator pressure, or exhausted friction discs by testing brake circuit pressure and inspecting return lines for metallic debris or friction carbon black, alongside emphasis on deep flushing of entire wet axle cavities and brake cooling radiators during burned brake disc replacement to remove residual carbon deposits and prevent secondary contamination.
• Expert Technical Support and Safety Guidelines: We provide technical documentation covering Caterpillar brake piston installation specialized tool instructions, friction disc pre-lubrication soaking guidelines requiring complete immersion in designated Caterpillar TO-4 specialized oil prior to installation, and brake assembly torque standards, preventing early component failure caused by improper installation.

Call to Action & User Experience
Optimize your braking performance and deceleration reliability 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 Caterpillar machine model (such as CAT 777G, 980H, or D8T units), brake system application areas (such as wheel brakes, brake control valves, or service brake packs), or original equipment manufacturer part numbers to lock onto target products instantly.
• RFQ and Bulk Overhaul Quotation: Access our fast-response interactive channels providing one-click bill of materials uploads for brake system overhaul lists to receive bundled assembly quotations and heavy-duty freight estimates, fulfilling centralized procurement requirements for overseas mining sites, fleets, and repair shops.
• Consultation and Support: Utilize our around-the-clock professional technical support channels staffed by senior braking and transmission system experts to assist overseas clients in verifying brake compatibility across legacy non-standard or modified equipment, ensuring cross-border procurement runs error-free.