Cummins engine spare parts Belt tensioning wheel C5662763X

Built as the core of the engine’s accessory drive system, this tensioning wheel features a hydraulic automatic tensioning mechanism for consistent belt tension. The integrated torsion spring (60Si2MnA steel) provides a dynamic tension range of 800-1200N, adapting to belt elongation and wear over time—maintaining optimal tension to prevent slippage. The hydraulic damping system absorbs belt vibration (10-500Hz) by 70%, reducing noise and extending belt life by 40% compared to manual tensioners. For X15 engines operating at 2100rpm, this ensures the accessory belt (Cummins OE 5255607) transmits power efficiently to the alternator and water pump, avoiding voltage drops or cooling system inefficiencies

Engineered to endure the rigorous conditions of heavy-duty engines, the C5662763X tensioning wheel adopts a rugged construction. The pulley is made of die-cast aluminum alloy (ADC12) with a hard anodized surface (HV 300), resisting wear and reducing friction coefficient to 0.08. The internal bearing is a double-row sealed ball bearing (IP67 protection) with high-temperature grease, supporting a service life of ≥300,000km. The tensioner body is precision-cast from nodular cast iron (GGG40), achieving a tensile strength of 400MPa and resisting deformation under extreme accessory loads (e.g., high-output alternators for refrigerated trucks). A reinforced dust cover prevents debris ingress, ensuring smooth operation in dusty construction environments

Optimized for diverse operating environments, the tensioning wheel exhibits exceptional resistance to heat, corrosion, and contaminants. The pulley’s anodized coating withstands continuous operating temperatures up to 150℃ (engine compartment peak temperature) and resists chemical corrosion from oil and coolant spills. The tensioner body undergoes electrophoretic coating (30μm thickness) and powder coating, passing 2000-hour neutral salt spray testing (ASTM B117) to prevent rust in coastal or saline-alkali areas. The bearing’s seals use FKM rubber, operating stably at -40℃ to 180℃—adapting to frigid northern winters and desert heat. This environmental resilience ensures reliable performance in all climate zones and work conditions

The C5662763X tensioning wheel is designed for low maintenance and long-term cost savings. Its bolt-on design enables quick replacement—two technicians can complete the process in 45 minutes, 30% faster than aftermarket tensioners with complex mounting. The automatic tensioning mechanism eliminates the need for periodic manual adjustments, reducing maintenance labor by 50%. By preventing belt slippage and wear, it extends belt replacement intervals from 60,000km to 120,000km, saving $200+ per vehicle annually. Avoiding belt failure (which causes accessory shutdown and $1,000+ in downtime costs) is critical for long-haul fleets. Backed by a 2-year/250,000km Cummins warranty, it provides predictable maintenance costs and reliable drive system performance