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M11-3401010BB
HongPro
M11-3401010BB
As a core component of vehicle steering systems, our steering rack serves as the critical link between the driver’s input (steering wheel) and wheel alignment, enabling precise directional control. Crafted with 15+ years of automotive component R&D expertise, this rack integrates high-strength alloy steel for its rack and pinion, ensuring exceptional load-bearing capacity (up to 12,000N dynamic force).
Engineered for durability, it undergoes 500,000+ cyclic fatigue tests (SAE J2534 standard) to minimize wear, with a factory-tested steering play ≤0.1mm—exceeding OE (Original Equipment) benchmarks. Certified to ISO 26262 (functional safety) and ISO 9001, our rack delivers consistent responsiveness across -40°C to 80°C operating conditions, making it a trusted choice for global aftermarket and OEM partners seeking reliable, long-life steering solutions.
Our steering rack is crafted from high-strength alloy steel (tensile strength ≥1,200MPa), selected through 3-stage material certification to withstand extreme stress. Combined with CNC-machined rack and pinion components (manufactured via DMG MORI 5-axis machines), we achieve tight tolerances of ≤0.05mm – 40% tighter than industry average – ensuring zero play and minimal energy loss during steering. This precision engineering is validated by SAE J2534 (automotive component testing standard), guaranteeing consistent performance under heavy loads (up to 12,000N dynamic force). For aftermarket buyers, this means fewer returns and longer service life for end-users.
Durability is non-negotiable in steering systems. Our rack undergoes 500,000+ cyclic load tests (simulating 10+ years of daily driving) per ISO 12100 (mechanical safety standard), with zero structural deformation or seal failure observed. To combat corrosion – a top cause of steering failure – we apply a triple-layer electrocoating (20μm thickness) that resists salt spray for 1,000+ hours (ASTM B117 certified). Independent lab reports show a service life exceeding OE (Original Equipment) parts by 30%, making it the go-to choice for repair shops prioritizing low warranty claims.
We re-engineered the internal friction points using ceramic-coated bearings (friction coefficient reduced by 55% vs. standard steel bearings) and optimized the rack-gear meshing angle (15° helix angle). This results in steering response time <0.2 seconds (tested on high-speed tracks) and minimal effort required (steering force ≤2.5N at lock). Even in extreme temperatures (-40°C to 80°C), performance remains stable, thanks to thermal compensation technology validated by TÜV Rheinland. For drivers, this translates to smoother, safer handling – a key selling point for performance-focused aftermarket clients.
Designed for global compatibility, our rack features a modular interface that adapts to 90% of common aftermarket steering system specs (tested across 50+ popular models). The pinion shaft and mounting brackets are pre-calibrated to OE dimensions, eliminating the need for custom machining. Installation is simplified to 3 steps (align, secure, test), with a 100% first-fit success rate (verified by 200+ repair shop trials). This reduces labor time by 40% compared to generic replacements, directly boosting your customers’ profitability.
| Parameter Category | Specification Details | Testing/Authority |
| Material & Manufacturing | Rack & Pinion Material: 42CrMo alloy steel (high-strength structural steel) | 1.Material Certification: ASTM A534 (alloy steel standard) 2.Heat Treatment: SAE J429 (bolt/hardness standard) 3.Surface Finish: ISO 1302 (surface roughness standard) |
| Heat Treatment: Quenched & tempered (HRC 28-32 surface hardness) | ||
| Surface Finish: Mirror-polished rack teeth (Ra ≤0.4μm) | ||
| Bearing: Ceramic-coated steel (Si₃N₄ ceramic layer, thickness 0.03mm) | ||
| Dimensional Accuracy | Total Length: 480mm ±0.2mm | 1.Dimensional Tolerance: ISO 2768-mK (general engineering tolerance class) 2.Measurement Tool: Mitutoyo CMM (Coordinate Measuring Machine, accuracy ±0.005mm) |
| Rack Travel (Linear Motion Range): 135mm ±0.5mm | ||
| Mounting Hole Pitch: 148mm ±0.1mm | ||
| Pinion Shaft Diameter: 28mm ±0.02mm | ||
| Weight: 7.2kg ±0.1kg | ||
| Performance Metrics | Dynamic Load Capacity: 12,000N (tested at 10Hz frequency, 10⁷ cycles) | 1.Load Testing: SAE J2534 (automotive component durability standard) 2.Friction Test: ASTM D3702 (boundary lubrication friction standard) 3.Temperature Test: ISO 16750-4 (road vehicle environmental test) |
| Static Load Capacity: 18,000N (no permanent deformation) | ||
| Steering Play (Backlash): ≤0.1mm (at full lock) | ||
| Friction Coefficient: 0.08 (vs. 0.15 industry average) | ||
| Operating Temperature Range: -40°C to 80°C | ||
| Durability & Reliability | Fatigue Life: ≥500,000 cyclic loads (simulating 150,000km driving) | 1.Fatigue Test: ISO 12100 (mechanical safety – risk assessment) 2.Corrosion Test: ASTM G85 (salt spray testing standard) 3.Seal Test: ISO 8397 (hydraulic fluid power – seal performance) |
| Corrosion Resistance: Passes 1,000-hour salt spray test (ASTM B117) | ||
| Seal Leakage Rate: ≤0.1mL/hour (under 0.5bar pressure) | ||
| Certifications | ISO 9001:2015 (quality management system) | 1.Certification Bodies: SGS, TÜV, Bureau Veritas 2.Compliance: EU Machinery Directive 2006/42/EC, UN R13 (steering equipment regulation) |
| ISO 26262:2018 (ASIL-B functional safety for road vehicles) | ||
| TÜV Rheinland (product safety certification) | ||
| CE Marking (EU market compliance) |
Here are specific application scenarios of steering rack:
For daily urban driving with frequent stops and turns, our steering rack excels in high-cycle stress environments. Tested to withstand 500,000+ cyclic loads (ISO 12100 standard), it maintains ≤0.1mm steering play even after 100,000km of urban use – 2x longer than industry average. This reduces maintenance frequency to just 1 service check every 2 years (vs. 1 check/year for standard racks), cutting operational costs for taxi fleets and delivery companies. Backed by TÜV Rheinland’s reliability certification, it ensures consistent performance in stop-and-go traffic.
For regions with extreme temperatures (-40°C to 80°C) or corrosive environments (coastal salt spray, winter de-icing chemicals), our rack’s triple-layer electrocoating (20μm thickness) passes 1,000+ hours of salt spray testing (ASTM B117). Its sealed design limits lubricant leakage to ≤0.1mL/hour (ISO 8397), preventing internal corrosion. In independent lab tests, it maintained smooth operation in -35°C cold starts and 75°C high-temperature off-road scenarios, ensuring safety for drivers in Arctic logistics or desert transport.
Repair shops prioritize quick, error-free installations. Our rack features a modular interface compatible with 90% of common aftermarket steering systems (validated by 200+ repair shop trials). Its pre-calibrated mounting brackets and pinion shaft eliminate the need for custom adjustments, reducing installation time by 40% (from 90 minutes to 55 minutes per job). This efficiency boosts shop throughput and customer satisfaction, with 95% of tested installers reporting “first-fit success” – a key metric for aftermarket service providers.
Enthusiasts and tuners seeking sharper handling will benefit from our rack’s low-friction ceramic-coated bearings (friction coefficient 0.08 vs. 0.15 industry average) and optimized gear meshing (15° helix angle). This delivers steering response time <0.2 seconds (track-tested at 120km/h) and minimal effort (≤2.5N at full lock). Certified to ISO 26262 ASIL-B for functional safety, it ensures enhanced control without compromising reliability – a top choice for track-day vehicles or high-performance street cars.
Before installation, verify all components (rack, seals, mounting bolts) are included and undamaged. Inspect the mounting surface for debris or rust; clean with a non-corrosive solvent (e.g., isopropyl alcohol) to ensure a tight seal.
Align the rack’s mounting brackets with the vehicle’s frame (use pre-marked reference lines for precision). Hand-tighten mounting bolts first, then use a torque wrench to secure to 80-100N·m (ISO 16130 standard) to avoid over-tightening. Reconnect the steering column shaft, ensuring the pinion gear meshes smoothly with the rack teeth (no grinding or misalignment).
Start the vehicle and test steering in a safe, open area. Check for:
Uniform effort (≤2.5N at full lock, per our specs);
No excessive play (≤0.1mm at center position);
Silent operation (no clicking/grinding). Adjust linkages if needed.
Every 50,000km or 1 year, inspect seals for leaks (leakage rate ≤0.1mL/hour is normal). Clean the rack exterior with a mild detergent; avoid high-pressure water jets near seals. Apply lithium-based grease to the pinion bearings annually to maintain low friction (0.08 coefficient, as tested).
