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As a leading manufacturer and supplier of commercial vehicle drivetrain components, we present this premium synchronizer sleeve engineered for heavy-duty applications. Designed to resolve severe transmission wear and tear, it ensures seamless gear transitions under immense operational loads.
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The Gearbox Synchronizer Sleeve for Heavy Duty Truck Transmission is meticulously crafted to transform the operational efficiency of heavy-duty commercial fleets. When drivers engage the transmission, they will immediately feel the crisp, vibration-free transition, a direct result of our rigorous engineering standards. The cold, dense feel of the high-grade steel speaks to its robust structural integrity, capable of withstanding the punishing, high-heat environment of a heavy-duty gearbox. By mitigating the harsh metallic grinding noises and clunky shifts often associated with inferior components, this synchronizer sleeve significantly reduces driver fatigue and minimizes the risk of catastrophic transmission failure. Fleet operators will notice a profound improvement in drivetrain longevity and a drastic reduction in unplanned maintenance downtime. Every surface is machined to exacting tolerances, ensuring that the sleeve glides effortlessly along the main shaft, providing a smooth, tactile engagement that professional operators demand. This is not merely a replacement part; it is a strategic structural upgrade designed to optimize fleet performance, protect the fragile transmission ecosystem, and ultimately drive down the total cost of ownership in the most demanding operational landscapes.
| Basic Info. | |
| Model NO. | Cooling System |
| 1310304175 | Air Cooled |
| Efficiency | Material |
| Triple Plate Clutch | Steel |
| Speeds | Torque Capacity |
| 7-speed | 1000 lb-ft |
| Type | Warranty |
| Torque Converter MT | 1year |
| Payment | Shipping |
| Tt L/C | by Sea |
| Brand | Truck Type |
| Sinoascend | Dump Truck |
| Transport Package | Specification |
| Standard Packagingwooden Box | OEM Standard Size |
| Trademark | Origin |
| SINOASCEND | Jinan Shandong, China |
| HS Code | Production Capacity |
| 8708507990 | 5000PCS/Month |
| Packaging & Delivery | |
| Package Size | Package Gross Weight |
| 50.00cm * 50.00cm * 60.00cm | 3.000kg |
Product Features |
Key Features & Highlights
Engineered for the most demanding environments, this synchronizer sleeve brings unparalleled reliability to commercial transport operations. By integrating advanced metallurgical processes and precision machining, it directly addresses the core challenges of drivetrain wear and unexpected mechanical failures.
Optimized Engagement Profile: The meticulously contoured internal splines ensure instantaneous, fluid gear synchronization, eliminating the harsh metallic clashing that damages surrounding components.
Thermal Stability: Designed to operate flawlessly under extreme frictional heat, maintaining its dimensional integrity without warping or expanding during long, heavy hauls.
Acoustic Dampening: The ultra-smooth surface finish minimizes friction-induced vibrations, contributing to a significantly quieter cabin environment and reducing auditory fatigue.
Corrosion Resistance: Specially treated to resist the corrosive effects of degraded transmission fluids and moisture buildup inside the gearbox casing.
Effortless Integration: Precision-calibrated to OEM dimensions, allowing technicians to execute drop-in replacements swiftly, cutting down labor hours in the repair bay.
Material & Heat Treatment
Heavy payloads and steep inclines place immense stress on transmission components, often leading to premature wear, chipped teeth, or catastrophic fractures. We solve this critical issue by utilizing premium-grade steel subjected to an advanced carburizing and carbonitriding heat treatment process.
Exceptional Surface Hardness: Achieving a formidable 58-62 HRC, the exterior easily deflects abrasive particles and resists surface scoring during aggressive, high-torque shifts.
Deep Infiltration Layer: A consistent 0.8-1.2 mm penetration depth guarantees that the hardened shell will not wear away prematurely under constant, daily friction.
Resilient Core: While the surface remains impenetrable, the inner core retains crucial ductility, absorbing sudden shock loads without shattering or cracking.
Balanced Metallurgy: This perfect equilibrium between toughness and hardness prevents core softening and surface brittleness, safeguarding the gearbox in the most punishing conditions.
Product Display |
Gearbox Product Reference |
| 1316 304 010 | Two shaft first gear |
| 1316 304 002 | Two shaft second gear |
| 1356 302 103 | Input shaft |
| 1316 302 067 | input shaft gear |
| 1316 304 103 | Two-axis step gear |
| 1316 303 071 | Countershaft gearing gear |
| 1316 303 065 | Countershaft fourth gear |
| 1316 305 008 | Idler |
| 1356 304 035 | Two axis |
| 1316 304 008 | Two-shaft third-speed gear |
| 1316 303 005 | Countershaft third gear |
| 1316 303 033 | intermediate shaft |
| 1316 304 235 | reverse gear |
Imprecise machining is the primary culprit behind erratic shifting, excessive drivetrain noise, and power loss. Our manufacturing protocol eliminates these variables by adhering to the strictest international precision standards, delivering a component that meshes with absolute perfection.
Flawless Geometric Proportions: With an ISO 6-8 tooth profile accuracy, every gear tooth is sculpted to ensure maximum contact area, eliminating concentrated stress points.
Micro-Polished Surfaces: Boasting a surface roughness of Ra ≤ 1.6 μm, the sleeve glides with minimal resistance, feeling almost frictionless to the touch.
Strict Dimensional Stability: Post-heat treatment tooth alignment errors are strictly contained within ≤ 0.02 mm, preventing the microscopic misalignments that cause energy-draining friction.
Enhanced Power Transfer: The seamless meshing translates to zero power loss between the engine and the axles, optimizing fuel efficiency and acceleration capabilities.
Continuous, high-frequency gear changes in commercial driving inevitably lead to metal fatigue, manifesting as microscopic cracks that eventually cause component failure. We counteract this inevitability through specialized, high-impact surface strengthening techniques.
Advanced Shot Peening: High-velocity spherical media bombard the metal surface, introducing a uniform layer of residual compressive stress across the entire component.
Crack Propagation Prevention: This compressive layer acts as a microscopic shield, actively preventing the formation and spread of fatigue cracks along the gear teeth.
Extended Lifecycle: The overall fatigue life of the sleeve is boosted by a massive 20% to 30%, dramatically extending the intervals between necessary transmission overhauls.
Reliability Under Duress: Procurement managers can dispatch vehicles with absolute confidence, knowing the transmission can handle relentless stop-and-go traffic and heavy hauling without premature degradation.
Inconsistent quality across production batches is a major liability for procurement professionals. We eliminate this risk by maintaining complete control over a closed-loop, end-to-end manufacturing ecosystem, ensuring every single unit mirrors the master prototype perfectly.
Integrated Production Line: From raw forging and rough machining to thermal processing and final surface treatment, every step occurs under our strict, centralized oversight.
Advanced Hybrid Machining: We employ a sophisticated combination of gear hobbing paired with shaving and grinding, resulting in unparalleled structural fidelity and gear precision.
Precision Honing: A final honing stage refines the surface texture to an immaculate finish, enhancing the tactile smoothness and the visual gleam of the metal.
Zero-Defect Tolerance: Seamless transitions between manufacturing stages mean that dimensional stability is locked in, guaranteeing absolute consistency whether ordering ten units or ten thousand.
Delayed shipments paralyze repair schedules and drain inventory reserves. Our robust operational infrastructure is engineered to keep your supply lines flowing without interruption, backed by substantial manufacturing muscle and streamlined logistics.
Massive Production Volume: Powered by two sprawling facilities and a dedicated workforce of over 500 specialists, we easily maintain a production capacity of 5,000 pieces per month.
Rapid Dispatch for Stock: Standard inventory items are processed, securely packed, and shipped within an ultra-fast 3 to 7-day window.
Reliable Bulk Fulfillment: Large-scale, custom, or non-stock orders are systematically managed and delivered within a dependable 20 to 30-day timeframe.
Risk-Free Evaluation: We offer complimentary sample testing (with freight covered by the recipient), allowing for rigorous physical quality validation before committing to larger procurement volumes.
Subpar packaging leads to moisture ingress, rust, and physical damage during transoceanic transit, eroding profit margins and damaging reputations. We treat packaging as a critical extension of product quality, ensuring pristine arrival and enhanced presentation.
Heavy-Duty Wooden Crates: Custom-engineered OEM standard wooden boxes provide impenetrable armor against impact and crushing forces during aggressive port handling.
Climate-Sealed Protection: Advanced anti-corrosion wrapping and moisture-absorbing materials keep the steel components dry and rust-free, preserving their polished, factory-fresh finish.
Premium Visual Presentation: The proprietary SINOASCEND high-end cardboard enclosures elevate the unboxing experience, projecting an image of uncompromising quality and attention to detail.
Value Enhancement: This immaculate presentation not only safeguards the physical asset but empowers regional distributors to command premium pricing and elevate their market positioning.
Factroy Show |
Packaging & Shipping |
Certifications |
FAQ |
Sourcing critical automotive components requires a partner who understands the intricate balance of quality, longevity, and economic viability. With over a decade of entrenched experience in the auto parts industry, we have refined our processes to deliver unmatched value and operational peace of mind.
Decade of Expertise: Ten years of focused engineering have given us deep insights into the exact failure points of commercial transmissions, allowing us to design superior, long-lasting solutions.
Uncompromising Material Selection: We refuse to cut corners, utilizing only the highest grade raw materials to ensure our components outlast standard market alternatives by a significant margin.
Rigorous Quality Assurance: Every single production run is validated by pre-production samples, followed by exhaustive final inspections before any crate is sealed and cleared for shipment.
Flexible Financial Terms: We accommodate diverse purchasing structures with flexible payment options including TT and L/C, transacting seamlessly in both USD and RMB.
Dedicated Global Support: Our bilingual team ensures crystal-clear communication in English and Chinese, eliminating friction from the procurement process and providing rapid responses to all inquiries.
Navigating the technical specifications and procurement details of heavy-duty transmission components requires absolute clarity. Below are detailed answers to the most critical inquiries we receive from procurement specialists and fleet engineers.
By introducing carbon into the surface layer of the steel at extreme temperatures, we achieve a surface hardness of 58-62 HRC. This creates an incredibly wear-resistant outer shell that withstands the abrasive forces of constant gear engagement, while the core remains ductile enough to absorb high-torque shockwaves without fracturing.
Thermal processing inherently causes metal distortion. We counteract this through highly controlled cooling environments and post-treatment precision grinding. This strict protocol ensures that the tooth alignment error remains strictly ≤ 0.02 mm, guaranteeing a perfect, frictionless fit during assembly.
Absolutely. Engineered specifically for heavy-duty applications, this sleeve boasts a robust torque capacity of 1000 lb-ft. The high-grade triple plate clutch steel construction ensures it will not warp, shear, or strip under the immense rotational forces generated by fully loaded commercial vehicles on steep gradients.
Sea freight exposes metal to highly corrosive saline moisture. We combat this by coating the sleeves in a specialized anti-rust compound, sealing them in climate-controlled barrier bags, and securing them within customized, heavy-duty wooden boxes. This multi-layered defense guarantees the product arrives in factory-pristine condition.
Quality is verified through a rigid, multi-stage inspection framework. We produce and test a pre-production sample to validate the machining setup. Once mass production concludes, every batch undergoes strict dimensional, hardness, and surface roughness testing before receiving final clearance for dispatch.
