Differential Case Set

• OE-Matched Precision Fit: Manufactured strictly in accordance with original vehicle dimensions and OE specifications, ensuring a perfect replacement for factory differential case parts without any modifications. Eliminates fitment issues, gear misalignment, and drivetrain malfunctions, saving time and labor during installation.

• 12-Month Quality Guarantee: Backed by a 12-month quality warranty from the date of customer receipt, covering manufacturing defects and performance issues. Our professional after-sales team provides timely support to resolve any concerns, ensuring long-term peace of mind for distributors and end-users.

• Flexible Small-Batch Orders: Accepts small-batch orders (retail orders excluded), catering to the needs of auto parts distributors, repair workshops, and B2B partners. Supports flexible minimum order quantities (MOQs) to adapt to different business scales and inventory requirements.

• Targeted Compatibility for Japanese & Korean Models: Specializes in Japanese and Korean vehicle models, including Toyota, Mazda, Isuzu, Mitsubishi, Hyundai, Kia, and more. Our deep understanding of these vehicles’ drivetrain systems ensures precise compatibility and optimal performance for each specific model.

• Customizable Packaging Solutions: Offers tailored packaging services, including brand logo printing, customized labeling, and branded packaging design. Enhances brand visibility for distributors and improves presentation for B2B transactions, strengthening your market competitiveness.

• Urban Road Driving: Ideal for daily commuting in cities, our Case Set-Differential adjusts wheel speeds seamlessly during frequent turns at intersections, roundabouts, and narrow streets. It prevents tire scrubbing and reduces drivetrain strain, ensuring smooth, energy-efficient driving for daily use. Perfect for sedans and compact SUVs commonly used in urban environments.

• Off-Road Exploration: Designed to support 4x4 pickups and off-road vehicles navigating mud, sand, gravel, or mountain trails. When paired with limited-slip or locking differentials, our Case Set-Differential distributes torque to the wheels with grip, avoiding slippage and maintaining traction—enabling safe passage through uneven, low-adhesion terrains.

• Heavy-Duty Hauling & Towing: Engineered to handle increased torque loads when carrying heavy cargo or pulling trailers. It evenly transmits power to the drive wheels, ensuring stable acceleration and deceleration, preventing component overheating, and safeguarding driving safety. Suitable for light and medium-duty commercial vehicles, pickup trucks, and SUVs used for hauling.

• Highway Cruising & Overtaking: Ensures consistent wheel rotation for stable straight-line driving at high speeds. During overtaking (quick acceleration), it balances power distribution between the left and right wheels, enhancing responsiveness and enabling smooth speed transitions—improving overall driving comfort and safety on highways.

• Rural/Suburban Terrain: Adapts to varying wheel travel distances on dirt roads, farm lanes, or hilly paths with frequent turns and slight unevenness. Our Case Set-Differential reduces tire wear, improves maneuverability, and ensures reliable performance, making it ideal for rural work vehicles or suburban leisure drives.

Specifications of the Case Set-Differential vary significantly across vehicle types (sedans, SUVs, commercial vehicles). Below are general technical parameter ranges, key indicators, and practical examples to guide your selection:

1. Mechanical Performance Parameters

• Maximum Input Torque:

Compact Sedans: Approximately 200 – 350 N·m

Mid-to-Large Sedans/SUVs: Approximately 350 – 600+ N·m

Heavy-Duty Commercial Vehicles: Can reach 1000 – 3000+ N·m

• Final Drive Ratio: Typically ranges between 3.0 and 5.0 (e.g., 3.73, 4.10), depending on the vehicle’s engine characteristics and tire size—optimized for fuel efficiency and performance.

• Gear Material: Usually high-strength alloy steel (e.g., 20CrMnTi, 20CrMo), treated with carburizing and quenching to enhance durability. Surface hardness typically reaches HRC 58-62, ensuring resistance to wear and impact.

• Gear Precision: Micron-level meshing precision to minimize noise, reduce energy loss, and ensure high transmission efficiency.

2. Key Performance Indicators (For LSD/Performance Differentials)

• Locking Factor (Bias Ratio):

Standard Open Differentials: Close to 1.0 (no limited-slip capability)

Mild LSD (Family Sedans): 1.5 – 2.0

Heavy LSD/Off-Road Models: 2.5 – 4.0+ (e.g., hardcore off-roaders, performance vehicles like Porsche)

• Slip Rate Control:

Split-Mu Surface Slip Rate: High-quality differential case sets can control this within 2.5%—reflecting stability on surfaces where one side is wet or slippery.

Full-Slip Surface Slip Rate: Excellent products can control this around 1.5% – 2.0%—ensuring stability on icy or snowy surfaces.

Response Time: Torque distribution response time for electronic or mechanical LSDs is typically under 0.1 seconds, ensuring dynamic handling and quick adaptation to changing road conditions.

3. Physical Specifications Example (Mid-size Vehicle)

• Weight: Assembly weight typically ranges from 15kg to 40kg; rear axle differential cases for commercial vehicles can exceed 40kg.

• Lubricant Capacity: Approximately 1.0 – 2.5 liters; requires specialized GL-5 grade gear oil to ensure proper lubrication and component protection.

• Bearing Preload: Must be precisely adjusted during installation; axial play is typically within the 0.05 – 0.15 mm range to prevent gear misalignment and premature wear.

Common Failure Symptoms & Notes

• Oil Leaks: Caused by aging or damaged seals. Must be replaced promptly to prevent gear damage due to insufficient lubrication, which can lead to costly repairs.

• Vibration/Shudder: Often caused by driveshaft imbalance or severe internal gear wear. If detected, inspect the differential case and related components immediately to avoid further damage.

• Binding/Sticking: Friction plates in an LSD may seize, making turning difficult and causing "wheel hop" or skipping. This requires disassembly and inspection of the differential case set.

• Installation Note: Professional installation by certified technicians is recommended to ensure proper bearing preload adjustment, gear alignment, and lubrication—incorrect installation can reduce service life and cause performance issues.

• Storage Note: Store in a dry, ventilated environment to avoid rust or corrosion. Keep away from moisture and corrosive substances to maintain material integrity and performance.