Dongfeng KL truck parts Clutch driven disc assembly 1601130-T38V0

Designed to handle the high torque output of Dongfeng KL’s diesel engine (up to 1,800 N・m), the driven disc features a reinforced torque-carrying structure. The hub is crafted from high-strength alloy steel (40Cr grade) with a carburized surface (hardness HRC 58–62) that resists spline wear under heavy loads, while the torsion springs (6 pieces, 5mm wire diameter) are made of chrome-silicon steel (55SiCr) to absorb torque fluctuations—supporting smooth power delivery during gear shifts. The friction disc’s steel core uses a dual-layer design (1.5mm thick + 0.8mm thick spring steel) that enhances rigidity, enabling the assembly to withstand 200% of the rated torque (3,600 N・m) for short durations (e.g., uphill starts with heavy loads) without deformation. Unlike low-torque driven discs that slip under load, this design ensures reliable power transfer for Dongfeng KL’s common applications: long-haul freight, construction hauling, and off-road transport

The driven disc’s friction facings are made of high-performance organic-metallic composite material, optimized for durability and clutch engagement smoothness. The material contains 30% copper fibers (for heat conductivity), 25% carbon fibers (for wear resistance), and 15% ceramic particles (for high-temperature stability)—delivering a friction coefficient of 0.38 (stable across temperatures from 150°C to 450°C). This composition ensures minimal wear even under frequent clutch engagement (e.g., urban stop-and-go driving), with a service life of 150,000+ km (3x longer than pure organic friction materials). The friction facings are bonded to the steel core via high-temperature resin (resistant to 500°C) and riveted with stainless steel rivets (304 grade) to prevent delamination—critical for avoiding sudden friction material failure during heavy use

Engineered to minimize vibration and noise in the transmission system, the assembly integrates a multi-stage torsional damping mechanism. The primary damping stage uses 6 torsion springs (arranged in a circular pattern) that absorb low-frequency vibrations (5–20 Hz) from the engine, reducing gear rattle by 40%. The secondary damping stage features a friction washer (made of sintered bronze) that dampens high-frequency vibrations (20–50 Hz) during clutch engagement, protecting the transmission gears from impact wear. Additionally, the hub’s rubber damper (EPDM material, 60 Shore A hardness) isolates vibration between the spline hub and the friction disc core, further reducing noise transmitted to the cab. Unlike non-damped driven discs that cause excessive transmission wear and driver discomfort, this design ensures quiet, smooth operation across all driving conditions

Built to withstand the high heat generated during clutch slipping (up to 500°C), the driven disc includes heat dissipation features that prevent overheating. The friction disc’s steel core has 12 radial heat vents (3mm width) that channel heat away from the friction facings, while the hub’s aluminum alloy heat shield (1mm thickness) reflects heat from the flywheel, keeping the torsion springs and rubber damper within their operating temperature range. All metal components (hub, steel core, rivets) undergo zinc-nickel plating (8–12μm thickness) that resists corrosion from road salt and moisture, passing 500 hours of neutral salt spray testing without rust. The friction material is also treated with a anti-corrosion coating to prevent oxidation during storage or non-use. Each unit undergoes dynamic balance testing (within 5g·cm tolerance to prevent vibration), torque capacity testing, and friction coefficient verification, backed by a 12-month warranty against defects (e.g., friction material delamination, hub spline wear, torsion spring breakage)