Dongfeng LoongGine Engine parts connecting rod bearing 10BF11-04058

Built to withstand the extreme dynamic loads of heavy-duty engines, this bearing adopts a high-performance bimetallic structure. The steel back (SPCC cold-rolled steel) provides rigid support with a tensile strength of 520MPa, resisting deformation under the connecting rod’s maximum impact load (120kN). The bearing surface is a 0.3mm-thick lead-tin-copper alloy (CuPb24Sn4) layer, which exhibits excellent fatigue resistance—enduring 100 million load cycles without cracking. This structure balances rigidity and elasticity, absorbing 40% of the vibration between the connecting rod and crankshaft, reducing wear on both components and extending their service life by 30%

The bearing’s inner surface features a precision-machined micro-groove pattern optimized for lubrication efficiency. The crosshatched grooves (30° angle, 0.01mm depth) create a “oil storage” effect, retaining engine oil to form a stable oil film (0.02-0.03mm thickness) between the bearing and crankshaft journal. This oil film reduces friction coefficient to 0.0015, minimizing frictional power loss by 25% compared to plain bearings. The grooves also guide oil flow to the bearing’s edge, ensuring uniform lubrication and preventing dry friction during cold starts. Even under extreme load conditions (e.g., climbing with full load), the oil film remains intact, avoiding metal-to-metal contact

Engineered to endure the harsh conditions of heavy-duty engine operation, the bearing integrates multiple protective features. The CuPb24Sn4 alloy surface undergoes a phosphating treatment, enhancing adhesion to the oil film and resisting corrosion from acidic combustion by-products. The steel back is coated with an electrophoretic layer (15μm thickness), passing 800-hour neutral salt spray testing (ASTM B117) to prevent rust. The bearing’s edge is chamfered (1.5×45°) to avoid scraping the crankshaft journal, while the alloy layer’s hardness (HB 35-45) ensures wear resistance—maintaining dimensional accuracy for ≥250,000km even in dusty or high-temperature environments

The connecting rod bearing is produced via advanced manufacturing processes to ensure consistent quality and performance. It undergoes CNC grinding (surface roughness Ra ≤0.1μm) and ultrasonic flaw detection to eliminate internal defects like cracks or inclusions. The strict quality control ensures each bearing matches the engine’s dynamic balance, avoiding vibration-induced damage. Installation is simplified by the bearing’s precise fit—no additional shims are required, reducing assembly time by 40% compared to non-OE bearings. By preventing crankshaft and connecting rod wear, it reduces engine overhaul costs by 50% and avoids unplanned downtime. Backed by a 1.5-year/180,000km warranty, it provides reliable support for heavy-duty operations