Product Introduction
1136000313 Smooth OEM-replacement Wear-resistant Crankshaft for Geely EC-7(1.5 L)
This 1136000313 crankshaft is engineered to OEM specifications, ensuring a perfect fit and uncompromising performance. It is precision-machined from high-grade forged steel, providing exceptional tensile strength and fatigue resistance to handle high combustion pressures and rotational forces. The crankshaft undergoes a rigorous nitriding surface treatment, increasing surface hardness to 50-60 HRC for superior wear resistance and an extended service life, significantly reducing the risk of premature failure.Critical dimensions, including main and pin journal diameters, are held to tolerances within ±0.01mm to guarantee optimal oil clearance and efficient engine operation. Each unit is dynamically balanced to minimize vibrations, which contributes to smoother engine performance and reduced stress on adjacent components. This crankshaft is the reliable choice for a robust and durable engine rebuild.
Product Advantage
1. Premium Forged Steel Construction & Material Integrity
This crankshaft is crafted from high-grade forged steel, a manufacturing process that aligns the metal's grain flow to the shape of the part. This results in superior fatigue strength and impact resistance compared to cast alternatives. It undergoes rigorous material testing to ensure a tensile strength exceeding 900 MPa, providing the structural integrity needed to withstand intense combustion pressures and high-RPM operation without deformation. This focus on material science guarantees long-term reliability and durability for the engine's core rotating assembly.2. Precision Machining to Exact OEM Tolerances
We guarantee a perfect fit and optimal performance through state-of-the-art CNC machining. Critical dimensions, such as main journal and pin journal diameters, are held to exceptionally tight tolerances within ±0.013 mm. This precision ensures correct oil clearances for effective hydrodynamic lubrication, preventing oil pressure loss and premature bearing wear. By adhering to strict original equipment specifications, this crankshaft delivers seamless integration and restores your engine to its factory performance standards.3. Advanced Nitriding Surface Treatment for Enhanced Wear Resistance
To significantly extend service life, this crankshaft features a advanced gas nitriding process. This thermochemical treatment creates an extremely hard, wear-resistant surface layer with a hardness rating of 50-60 HRC, while maintaining a tough, shock-absorbent core. The resulting hardened case depth of 0.2-0.3mm drastically reduces friction and provides exceptional resistance to abrasion and scuffing, even under extreme lubrication conditions. This makes it a superior choice for engines subjected to high mileage or demanding driving conditions.4. Meticulous Dynamic Balancing for Smooth Operation
Each crankshaft undergoes a meticulous dynamic balancing process on computer-controlled machines. This process minimizes residual imbalance to below 15 g·cm, a standard that meets or exceeds original equipment requirements. Proper balancing is critical for reducing NVH (Noise, Vibration, and Harshness), which leads to smoother engine performance, less stress on main bearings, and increased overall longevity of the entire engine block and drivetrain components.5. Comprehensive Quality Assurance & Direct Replacement
Every unit is 100% inspected and backed by our comprehensive quality control system. This crankshaft is a direct OEM replacement, requiring no modifications for a correct installation. It is supplied with all necessary specifications, ensuring it matches the original part in weight, balance, and geometry. We are so confident in our manufacturing that this product comes with a robust warranty, giving you complete peace of mind for your engine rebuild project.
Technical Parameters
| Parameter | Specification |
| OEM Part Number | 1136000313 |
| Engine Displacement | 1.5L (1498 cc) |
| Main Material | High-Grade Forged Steel (54CrMoV6) |
| Number of Cranks | 4 |
| Number of Main Journals | 5 |
| Main Journal Diameter | Ø 59.985 - 60.000 mm |
| Crankpin (Pin Journal) Diameter | Ø 49.985 - 50.000 mm |
| Surface Hardness | 550-650 HV (50-60 HRC) |
| Hardened Case Depth | 0.2 - 0.3 mm |
| Main Journal Width | 26.00 - 26.10 mm |
| Dynamic Balancing Standard | ≤ 15 g·cm |
| Net Weight | Approx. 13.2 kg |
| Surface Treatment | Gas Nitriding |
Product Uses
Here are specific application scenarios of Engine Parts Crankshaft:
1. Engine Rebuilding for Critical Failure
This crankshaft is the core component for rebuilding engines that have suffered a catastrophic connecting rod or main bearing failure. Such events often score or warp the original crankshaft journals beyond repair. Our unit, with its nitrided surface hardness of 50-60 HRC, provides a superior, wear-resistant replacement that restores engine block geometry to exact OEM specifications, ensuring long-term reliability after a major bottom-end failure.2. Scheduled Overhaul for High-Mileage Engines
For engines with over 150,000 kilometers, preventative maintenance is key. Wear on journal surfaces can lead to low oil pressure, engine knocking, and reduced efficiency. Replacing the worn crankshaft with our precision-balanced (≤15 g·cm) component during a scheduled overhaul restores optimal oil pressure, eliminates NVH (Noise, Vibration, Harshness), and ensures peak performance for the next service interval.3. Performance Engine Building and Upgrades
This crankshaft serves as a robust foundation for performance builds. Manufactured from high-strength forged steel, it is capable of handling increased stress from turbocharging or tuning. Its exact OEM dimensions and weight ensure compatibility, while the superior material properties provide a safety margin for power upgrades, making it a trusted choice for enthusiasts and professional engine builders seeking durability.4. Replacement for Chronic Oil Pressure Issues
Persistent low oil pressure, often caused by excessive clearance between the crankshaft journals and bearings, requires a definitive solution. Installing this crankshaft, with its journal diameters held to a tolerance of ±0.013mm, re-establishes correct oil clearances. This directly addresses the root cause of the pressure drop, protecting the entire engine from oil starvation and damage.Product Operate Guide
- Inspection & Cleaning: Meticulously clean the engine block and all oil galleries. Verify the main bearing bore alignment and dimensions.
- Bearing Fitment: Install new main and rod bearings, ensuring correct clearances are verified with Plastigauge or a micrometer.
- Lubrication: Liberally apply a high-quality assembly lubricant to all journal surfaces and bearing inserts before final torquing.
- Torque Sequence: Always follow the manufacturer's specified multi-stage, cross-torque sequence and values for the main bearing caps.
