J42-1001720BC
Product Details
2. Premium Material Selection & Precision Manufacturing Process
The Chery J42-1001720BC MOUNT DOWN UP is crafted from high-performance, automotive-grade materials, carefully selected by Chery’s engineering team to withstand the extreme operating conditions of the Chery Arrizo 5’s powertrain system—including high dynamic loads, continuous vibration, extreme temperatures (ranging from -40°C to 120°C), and exposure to engine oil, coolant, and environmental contaminants. Drawing on years of experience in automotive powertrain component manufacturing and advanced material science, Chery prioritizes materials that balance mechanical strength, vibration damping performance, corrosion resistance, and durability, ensuring the engine mount maintains stable performance over a service life of typically 80,000–100,000 kilometers under normal operating conditions.
The main structural component of the J42-1001720BC MOUNT DOWN UP is the metal bracket, which is made of high-strength steel (Q235B) with a thickness of 8–10mm. This high-strength steel is widely recognized in the automotive industry for its excellent mechanical strength, impact resistance, and weldability, ensuring the bracket can withstand the heavy weight of the engine and transmission assembly (up to 250kg) and the dynamic loads generated during vehicle operation. The metal bracket undergoes a strict surface treatment process, including shot blasting, phosphating, and electrophoretic coating, to enhance its corrosion resistance and prevent rusting even under long-term exposure to moisture, engine oil, and road salt. The electrophoretic coating forms a uniform, wear-resistant protective layer on the surface of the bracket, ensuring it can withstand the harsh under-vehicle environment for years.
The core vibration-damping component of the engine mount is the rubber damping element, which is made of high-quality natural rubber mixed with synthetic rubber (styrene-butadiene rubber, SBR) and special additives. This rubber compound is carefully formulated to achieve optimal damping performance, with a shore hardness of 55–65 HA, which balances flexibility and rigidity—ensuring it can effectively absorb and dampen engine vibrations while maintaining sufficient structural support. The rubber damping element is designed to have excellent fatigue resistance, ensuring it does not deform, crack, or lose elasticity even after thousands of hours of continuous vibration. Additionally, the rubber is resistant to engine oil, coolant, and high temperatures, preventing degradation and ensuring long-term performance stability.
In addition to the metal bracket and rubber damping element, the J42-1001720BC MOUNT DOWN UP also includes a precision-machined steel bushing and mounting bolts. The steel bushing is made of high-grade carbon steel (45#) with a polished surface, ensuring smooth rotation and reducing friction between the mount and the chassis mounting points. The bushing is press-fitted into the rubber damping element with precise interference fit, ensuring a tight connection and preventing relative movement between components. The mounting bolts are made of high-strength alloy steel (10.9 grade), which offers exceptional tensile strength and shear resistance, ensuring the engine mount is securely fastened to the chassis and engine block without loosening during vehicle operation.
The manufacturing process of the J42-1001720BC MOUNT DOWN UP follows a strict, ISO 9001 and IATF 16949 certified production workflow, consistent with Chery’s global quality standards and modern automotive component manufacturing practices. The production process begins with the precision stamping and welding of the high-strength steel bracket, which is completed using automated CNC stamping and welding equipment to ensure uniform structural strength and dimensional accuracy. The welded bracket undergoes a strict quality inspection to detect any welding defects (such as cracks, porosity, or incomplete penetration), ensuring structural integrity.
Next, the rubber damping element is manufactured using a high-temperature vulcanization process. The rubber compound is mixed and kneaded in a controlled environment to ensure uniform material distribution, then injected into a precision mold and vulcanized at 160–180°C for 15–20 minutes. This vulcanization process ensures the rubber forms a strong bond with the metal bracket and steel bushing, enhancing the overall structural stability of the engine mount. After vulcanization, the rubber element is trimmed and polished to remove any excess material and ensure precise dimensions.
The final step in the manufacturing process involves rigorous quality control testing to ensure the J42-1001720BC MOUNT DOWN UP meets Chery’s strict performance standards. These tests include vibration damping performance testing, load-bearing capacity testing, high-temperature durability testing, and corrosion resistance testing. Vibration damping performance testing measures the mount’s ability to absorb and dampen vibrations at different frequencies (5–500Hz), ensuring it meets the required damping ratio (≥0.35). Load-bearing capacity testing verifies that the mount can withstand the maximum dynamic load of the engine without deformation or failure. High-temperature durability testing simulates thousands of hours of operation under extreme temperatures to ensure the rubber damping element does not degrade or lose performance. Corrosion resistance testing ensures the metal bracket and components can withstand long-term exposure to harsh environments without rusting or damage. Only engine mounts that pass all these tests are allowed to leave the factory, ensuring the J42-1001720BC series delivers reliable performance and long service life in the Chery Arrizo 5.
3. Structural Composition & Key Design Features
The Chery J42-1001720BC MOUNT DOWN UP features a precision-engineered structural design, tailored to the specific requirements of the Chery Arrizo 5’s powertrain system and the vehicle’s diverse operating environment. Its structural composition is optimized to maximize vibration damping performance, ensure stable engine fixation, facilitate easy installation and maintenance, and enhance durability, with key design features that address the unique challenges of engine mount operation—especially in urban driving, highway cruising, and rough road conditions.
One of the key design features of the J42-1001720BC MOUNT DOWN UP is its integrated three-layer structure, consisting of an upper metal bracket, a middle rubber damping element, and a lower metal base. This three-layer design creates a multi-stage vibration damping system, where the rubber element absorbs and dampens high-frequency vibrations generated by the engine, while the metal brackets provide structural support and distribute the engine’s weight evenly to the chassis. The upper metal bracket is designed to connect to the engine block, with a precision-machined mounting surface that matches the engine’s mounting points exactly, ensuring a tight fit and preventing relative movement. The lower metal base is designed to attach to the vehicle chassis, with pre-drilled mounting holes aligned with the chassis’s mounting points, facilitating easy installation and ensuring proper alignment.
Another critical design feature is the optimized rubber damping element shape, which is engineered with a tapered and grooved structure. The tapered design allows the rubber element to deform uniformly under dynamic loads, ensuring consistent vibration damping performance across different operating conditions. The grooved structure increases the rubber’s flexibility and damping capacity, allowing it to absorb more vibration energy and reduce noise transmission. Additionally, the rubber element is designed with a built-in steel bushing, which reinforces the mounting point and reduces friction between the mount and the mounting bolts, extending the service life of both the mount and the bolts.
The J42-1001720BC MOUNT DOWN UP also features a anti-rotation design, which prevents the engine mount from rotating or shifting during vehicle operation. This design is achieved through the use of a locating pin on the lower metal base, which fits into a corresponding hole on the vehicle chassis, ensuring the mount remains in the correct position even under high dynamic loads. The anti-rotation design is critical for maintaining the alignment of the powertrain components, preventing misalignment that could lead to increased vibration, noise, and component wear.
Furthermore, the engine mount is designed with a maintenance-friendly structure, allowing for easy removal and replacement. The upper and lower mounting points use standard bolts, which can be easily removed with common automotive tools, eliminating the need for special equipment. The compact design of the mount ensures it fits perfectly in the limited space between the engine and chassis, making installation and replacement convenient for both professional technicians and DIY enthusiasts. Additionally, the mount’s surface is designed with clear marking of the part number and installation direction, ensuring correct installation and avoiding errors that could affect performance.
Another key design feature is the heat insulation layer integrated into the rubber damping element. The heat insulation layer is made of high-temperature-resistant silicone material, which prevents the high temperature generated by the engine (up to 120°C) from transferring to the rubber element, reducing rubber degradation and extending the mount’s service life. The heat insulation layer also helps to maintain the rubber’s flexibility and damping performance under high-temperature conditions, ensuring consistent vibration isolation even during long periods of engine operation.
Contact us
Leave your messages
