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T11-3401010BB
HongPro
T11-3401010BB
Our hydraulic steering racks are pivotal components in automotive steering systems. They're designed to convert the rotational motion of the steering wheel into lateral movement, precisely controlling the front wheels' direction. With a high - strength rack and pinion mechanism, they ensure smooth and responsive steering.
Hydraulic power, sourced from a pump, significantly reduces the driver's effort, especially at low speeds or during parking. Our racks are crafted with top - tier materials and undergo rigorous quality checks, guaranteeing durability and leak - proof performance. Trust our hydraulic steering racks to enhance vehicle handling and driving safety.
Adopting a customized precision rack and piston structure, combined with imported sealing components, our hydraulic steering rack ensures a hydraulic transmission efficiency of over 98% and a steering command response speed of ≤0.3 seconds, effectively eliminating steering backlash. This technology has undergone 12 years of industry application verification and has provided stable transmission support for more than 500,000 sets of hydraulic steering racks for sedans worldwide. It significantly improves driving control accuracy, adapts to steering needs under various road conditions, and serves as a core technical highlight of high-quality hydraulic steering racks for sedans.
Every hydraulic steering rack for sedans undergoes a 72-hour continuous 15MPa high-pressure leakage test before leaving the factory, which far exceeds the industry's conventional requirement of 48-hour 10MPa testing. The final product leakage failure rate is controlled within 0.01%. Additionally, it is equipped with a multi-layer composite dust cover with an IP6K9K dustproof rating, which can effectively block the intrusion of sand, mud and water stains, extend the service life of the hydraulic system, and provide customers with a long-term reliable user experience of hydraulic steering racks for sedans.
The rack is made of 20CrMnTi alloy material treated with carburizing and quenching, with a surface hardness of HRC58-62 and a wear loss of ≤0.02mm per 100,000 kilometers. It can achieve 200,000 kilometers of maintenance-free operation under normal use. Passing the wear resistance test conducted by the third-party authoritative organization SGS, its durability is improved by more than 60% compared with ordinary steel racks under simulated high-frequency steering conditions. This feature makes our hydraulic steering rack for sedans the first choice for customers as a "cost-effective hydraulic steering system component for sedans" in the after-sales market.
With innovatively optimized hydraulic flow channel design and a silent hydraulic valve group, the operating noise of the hydraulic steering rack for sedans is controlled below 60dB (the industry average is 65-70dB), meeting the library-level quiet standard. At the same time, through vibration damping technology, the vibration amplitude of the steering system is reduced to within 0.1mm, minimizing noise interference and hand vibration during driving, creating a quiet and comfortable driving environment for users, and further highlighting the product's advantages in detailed design.
On the premise of ensuring structural strength, aviation-grade aluminum alloy housing and high-strength lightweight rack are adopted, reducing the overall product weight by 15% compared with traditional cast iron hydraulic steering racks for sedans. This can reduce the unsprung mass of the vehicle and lower driving energy consumption. Verified by third-party testing, vehicles equipped with this product can reduce fuel consumption by 0.3-0.5L per 100 kilometers, conforming to the global trend of energy conservation and emission reduction, and providing customers with a hydraulic steering rack for sedans solution that combines performance and economy.
| Technical Parameter Category | Parameter Name | Specific Specification/Data | Industry Standard Reference |
| Core Performance Parameters | Hydraulic Transmission Efficiency | ≥98% | Industry Average ≤95% |
| Steering Response Speed | ≤0.3 seconds | Industry Routine ≥0.5 seconds | |
| Working Pressure Range | 5-15MPa | General Standard 4-12MPa | |
| Operating Noise Level | ≤60dB (Tested at 1-meter distance) | Industry Average 65-70dB | |
| Structure & Material Parameters | Rack Material | 20CrMnTi Alloy (Carburizing & Quenching Treatment) | Ordinary Products Mostly 45# Steel |
| Rack Surface Hardness | HRC58-62 | Industry Minimum Requirement HRC50 | |
| Rack Wear Loss | ≤0.02mm/100,000km | No Unified Standard, Routine ~0.05mm | |
| Housing Material | Aviation-Grade 6061 Aluminum Alloy (Die-Casting Molding) | Traditional Products Are Cast Iron | |
| Sealing Component Standard | Imported Nitrile Rubber (Oil-Resistant Temperature: -30℃~120℃) | Ordinary Rubber Temperature Resistance: -20℃~80℃ | |
| Quality Testing Parameters | High-Pressure Leakage Test | 15MPa Pressure for 72 Consecutive Hours, No Leakage | Industry Routine: 10MPa/48 Hours |
| Dustproof Rating | IP6K9K (Multi-Layer Composite Dust Cover) | Most Products Are IP54 | |
| Vibration Test Standard | 10-2000Hz Frequency, 10G Acceleration, 2-Hour Test | International ISTA 3A Transport Standard | |
| Salt Spray Test Duration | Neutral Salt Spray Test for 1000 Hours, No Rusting | Industry Routine: 500 Hours | |
| Adaptation & Installation Parameters | Installation Method | Direct Replacement Type (Drop-in Design) | 30% of Products Require Additional Adjustment |
| Working Oil Temperature Range | -40℃~130℃ | Minimum Low-Temperature Start Requirement: -30℃ | |
| Maximum Steering Angle Adaptation | ±40° (Compatible with Most Sedan Steering Systems) | General Adaptation Range: ±35°~±45° | |
| Product Weight | 3.2-3.8kg (By Model) | Average Weight of Cast Iron Housing Products: 5.5kg |
Here are specific application scenarios of steering rack:
Suitable for scenarios with frequent starts, stops and steering on congested urban roads. Its steering response speed of ≤0.3 seconds can quickly meet the demand for lane changes in traffic flow, and the silent design of below 60dB reduces noise interference during urban driving. Statistics show that this product can reduce steering operation fatigue by 30% in this scenario, adapting to the vehicle usage needs of 2-3 hours of daily urban commuting.
In complex road conditions such as mountain roads and suburban unpaved roads, the product's 15MPa high-pressure stable hydraulic system can avoid steering jitter, and the IP6K9K dustproof rating effectively blocks the intrusion of sand and mud. Third-party tests show that the steering accuracy retention rate reaches more than 95% under bumpy road conditions, ensuring driving safety in complex road conditions.
It can adapt to extreme temperature environments of -40℃~130℃. The hydraulic oil has stable fluidity at low temperatures to avoid heavy steering during cold starts; the temperature resistance of the sealing components meets the standard at high temperatures, with no leakage risk. In the after-sales market of frigid and tropical regions, the failure rate of this product is 40% lower than that of ordinary products, making it suitable for use in multiple climate regions around the world.
As a core replacement part for after-sales maintenance, it adopts the Drop-in Design (plug-and-play) installation method, which can reduce maintenance working hours by 50%. Its durability of 200,000 kilometers without major repairs can meet the maintenance customers' demand for "long-term reliability". At present, it has become the preferred replacement part for more than 200 auto parts maintenance providers worldwide.
Before installation, check the integrity of the product's seals to ensure no damage; clean the hydraulic oil pipelines to avoid impurity contamination (according to after-sales data, 70% of early failures are caused by pipeline impurities). It is recommended to use hydraulic oil that meets the API-Dexron VI standard to ensure system compatibility.
After starting the vehicle, let it idle for 3-5 minutes before operating the steering to allow full circulation of hydraulic oil; avoid holding the steering wheel at full lock for a long time (no more than 10 seconds at a time) to prevent system pressure overload and extend the product's service life.
Check the hydraulic oil level and purity every 5,000 kilometers, and replace the oil promptly if it becomes turbid; check the dust cover every 20,000 kilometers and replace it immediately if damaged (dust protection failure will increase the product failure rate by 60%) to ensure long-term stable operation.
