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L3411000
HongPro
L3411000
Our steering racks are engineered to meet rigorous OEM standards, ensuring exceptional durability and precise control for a wide range of vehicles. Crafted from high-strength steel or lightweight aluminum, these components are designed to deliver smooth, responsive handling while minimizing steering effort and vibration. Key features include corrosion-resistant coatings for extended lifespan, precision-geared teeth for minimal play, and compatibility with both hydraulic and electric power steering systems (EPS).
With global demand for steering systems growing (e.g., steering racks show 60% market scarcity in regions like Russia), our products address critical needs for reliability and performance. Tests validate 500,000+ cycles of operational durability, exceeding industry benchmarks for safety and longevity. Ideal for passenger and commercial vehicles, our racks ensure seamless integration and are trusted by professionals worldwide for their robust construction and consistent performance.
Our steering racks integrate advanced Rack-Electric Power Steering (R-EPS) technology, delivering 16KN maximum thrust via precision ball-screw mechanisms and belt drives. This ensures smooth and responsive handling across diverse driving conditions, with torque sensitivity optimized for minimal steering effort. Compatible with 12V/24V/48V systems, our products support redundant designs (ASIL-D ISO 26262 certified) for fail-safe operation. The modular architecture allows 30% higher power transmission efficiency compared to hydraulic systems, reducing energy consumption by up to 15%.
Engineered with high-strength steel alloys and corrosion-resistant coatings, our steering racks undergo 500,000+ cycle endurance tests exceeding OEM benchmarks. The integrated powerpack design minimizes mechanical friction points, extending lifespan by 40% under extreme road conditions. Finite element analysis (FEA) validates structural resilience against impact forces, while NVH optimization algorithms ensure noise levels below 65 dB during operation.
Featuring a full-cylindrical integrated powerpack, our steering racks achieve 20% smaller packaging volume versus conventional designs. This compact layout simplifies installation in electric and hybrid vehicles while freeing engine bay space for battery systems. The lightweight H-frame construction (29.5% weight reduction proven via simulation) enhances vehicle energy efficiency without compromising strength.
Designed for L2+ autonomous driving, our racks support steer-by-wire readiness and OTA updates for adaptive torque mapping. Redundant sensors and dual ECU architectures enable real-time steering compensation (e.g., pull-drift correction, end-stop damping) with ≤0.1s response latency. Compatibility with LKA/APA/RCS functionalities ensures seamless integration with ADAS platforms.
All products adhere to EN 14363 safety and EN 12299 comfort standards, with 90 million+ EPS systems deployed globally. Our manufacturing processes leverage IATF 16949-certified facilities, while 200+ vehicle applications across 60+ countries demonstrate field reliability. Each unit undergoes end-of-line calibration for precise force feedback matching OEM specifications.
| Parameter Category | Specific Parameter Item | Technical Specification/Numerical Value | Description/Basis |
| Basic Type | Steering Gear Type | Rack and Pinion | Mainstream solution for passenger cars/light commercial vehicles, compact structure, fast response, compliant with ISO 27605 classification requirements. |
| Rack Type | Involute spur rack | Tooth profile conforms to DIN 3960 standard, ensuring smooth meshing and transmission precision. | |
| Structural Parameters | Effective Rack Length | 450mm - 550mm (customizable) | Covers needs of front-wheel drive/rear-wheel drive vehicles, determines maximum steering travel (corresponding to wheel steering angle ±35° to ±45°). |
| Rack Module (m) | 2.0 - 2.5mm | Module determines load capacity; 2.0-2.5 is common for passenger cars (refer to ISO 230-2 gear measurement standards). | |
| Pressure Angle (α) | 20° | Standard pressure angle, balancing tooth contact strength and transmission efficiency (conforms to DIN 3964 gear parameter specifications). | |
| Rack Tip Diameter (da) | Φ60mm - Φ75mm | Matches housing installation space, affects rack rigidity (optimized via finite element analysis). | |
| Mounting Interface Dimensions | Mounting hole spacing: 150mm - 220mm; Mounting hole diameter: 12mm - 18mm (with positioning pin holes Φ5mm×2) | Compatible with most front suspension mounting positions (e.g., MacPherson/double wishbone), positioning pins ensure installation accuracy. | |
| Total Steering Gear Dimensions (L×W×H) | Approximately 500mm×180mm×150mm (example value, adjusted with rack length) | Compact design, adapts to engine compartment space constraints (validated via 3D modeling and crash simulation). | |
| Net Weight | 3.5kg - 5.5kg | Aluminum alloy housing + high-strength steel rack combination, balancing lightweight and impact resistance (density comparison: aluminum 2.7g/cm³ vs. steel 7.85g/cm³). | |
| Performance Parameters | Steering Ratio (i) | 14:1 - 18:1 | Directly affects steering wheel turns (e.g., 16:1 ratio requires 560° steering wheel rotation for 35° wheel turn), compliant with SAE J2430 steering performance test norms. |
| Maximum Input Torque (T_in) | 80N·m - 150N·m (peak) | Corresponds to maximum steering wheel input force (≈120N for Φ35mm steering column), meets emergency obstacle avoidance needs (refer to FMVSS 114 standard). | |
| Maximum Rack Output Thrust (F_out) | 4000N - 8000N | Determines steering effort, positively correlated with vehicle weight/tire size (e.g., ≥6000N thrust required for 2-ton vehicles). | |
| Backlash (Free Play) | ≤0.3° (rack displacement ≤1.5mm) | Precision meshing design reduces steering "dead zone" (superior to ISO 7414’s 0.5° upper limit). | |
| Operating Temperature Range | -40℃ to +80℃ (continuous); Short-term resistance up to +100℃ (e.g., engine compartment heat radiation) | Sealing components (FKM fluororubber) and lubricant (high-temperature composite lithium-based grease) ensure performance (validated via thermal cycle testing). | |
| Maximum Steering Frequency | ≥10 cycles/min (continuous operation for 1 hour without failure) | Meets needs of aggressive driving or frequent lane changes (refer to ISO 3471 steering fatigue test). | |
| Service Life (Cycles) | ≥1,000,000 cycles (full-stroke reciprocation, no jamming/noise) | Comprehensive life assessment based on MIL-STD-810G vibration testing + salt spray corrosion testing. | |
| Materials & Manufacturing | Rack Material | 20CrMnTi (carburizing and quenching) | Surface hardness HRC58-62, core hardness HRC30-45 (carburized layer depth 0.8-1.2mm), excellent wear and impact resistance (conforms to GB/T 3077 alloy structural steel standard). |
| Rack Surface Treatment | Phosphating + electrostatic powder coating (thickness 50-80μm) or zinc-nickel plating (thickness 10-15μm) | Salt spray resistance ≥1000 hours (ASTM B117), suitable for coastal/high-humidity regions. | |
| Housing Material | A356-T6 aluminum alloy (die-cast) or 34MnB5 hot-formed steel | Aluminum alloy: Lightweight (20% lighter than steel), good heat dissipation; Hot-formed steel: High strength (tensile strength ≥1500MPa), used for heavy-duty vehicles. | |
| Key Bearings | Self-lubricating nylon bushing (friction coefficient ≤0.15) + needle roller bearing (dynamic load ≥2000N) | Reduces internal friction loss (noise ≤65dB@1m), enhances steering feel (refer to ISO 362-1 NVH testing). | |
| Certifications & Standards | Safety Certifications | ISO 27605 (Safety Requirements for Road Vehicle Steering Systems), GB 17675 (Basic Requirements for Automotive Steering Systems) | Complies with EU E-Mark, China CCC, and North American FMVSS 114 certification requirements. |
| Performance Testing | SAE J2430 (Steering Gear Fatigue Test), ISO 7414 (Steering Gear Life Test) | Tests cover static load (≥2×max working torque), dynamic impact (±5g acceleration), and extreme temperature conditions. | |
| Compatibility Information | Applicable Vehicle Types | Front-wheel drive (FF)/rear-wheel drive (FR) passenger cars, light commercial vehicles (total mass ≤3.5 tons) | Not developed for specific models; supports customer reverse engineering adaptation (provides 3D models/installation drawings). |
| Steering Angle Range | Full rack travel corresponds to wheel steering angle: ±35° to ±45° (adjustable by ±2° via tie rod connection point adjustment) | Adjustable by modifying tie rod connection points on the rack and steering knuckle. |
Here are specific application scenarios of steering rack:
For optimal performance, always pre-inspect the steering rack mounting points and ensure alignment within ±0.5mm tolerance. Use torque wrenches (20-30 Nm for tie-rod nuts) to avoid over-tightening. Post-installation, perform a zero-point calibration via diagnostic tools to ensure sensor accuracy. Test steering responsiveness at low speeds first, validating smooth operation under 2.5 Nm torque. Regular checks for leaks and boot integrity are recommended every 30,000 km.
