S11-3001011 Steering Knuckle for Chery

Product Introduction

S11-3001011 Steering Knuckle for Chery

As the core load-bearing component of the steering system, the steering knuckle is connected to the wheels, steering rods, and suspension system through precision ball joints, achieving precise direction control and impact load transmission. Made of high-strength ductile iron (QT600-3) or forged aluminum alloy (A356-T6), strengthened by heat treatment, with a tensile strength of ≥ 600MPa.

Key technological highlights

● Integrated design: Pre press bearing seat+ABS sensor slot, reducing installation errors by 75%

● Safety redundancy: tested under 24000 lbf ultimate load

● Anti corrosion technology: triple coating (phosphating+electrophoresis+epoxy spraying), salt spray resistance for 1200 hours

Product Advantage

1. High Strength Casting Technology

Using ductile iron QT600-3 (tensile strength ≥ 600MPa) or forged aluminum alloy A356-T6 (density only 2.7g/cm ³), after quenching and tempering heat treatment+vibration aging treatment, the fatigue life exceeds 500000 cycles. Compared to the original factory parts, the load-bearing capacity has increased by 42%, completely solving the risk of steering knuckle arm fracture caused by bumpy road surface impact.

2. Precision Bearing Integration Design

The tolerance of the pre pressed wheel hub bearing seat is controlled at ± 0.02mm, and with the laser positioning slot, the ABS sensor clearance is ensured to be ≤ 0.8mm. Installation does not require gasket adjustment, and the axial clearance of the wheel hub is reduced by 90%.

3. Triple Layer Corrosion Protection

Exclusive zinc nickel phosphating+cathodic electrophoresis+epoxy powder spraying process, with 1200 hours of neutral salt spray test, corrosion resistance increased by 8 times compared to ordinary electroplating. Suitable for areas with high corrosion of snow melting agents, to prevent rusting and jamming of the steering knuckle shaft neck.

4. OEM Equivalent Dimensional Accuracy

Five axis CNC precision machining of key installation surfaces (ball head holes/brake caliper seats), with a positioning accuracy of ± 0.05mm. Supports precise replacement for over 12000 vehicle models, avoiding tire wear caused by installation errors.

5. Safety Enhanced Structural Design

Topology optimization design with added reinforcement bars in key stress areas, with no plastic deformation observed after 24000 lbf ultimate load testing. The steering rod interface is forged, which increases the shear resistance by 65% and specializes in treating the heavy and stubborn problem of large SUV steering gears.

Technical Parameters

1. Material Specifications

Main material: Ductile iron QT600-3 (tensile strength ≥ 600 MPa/elongation ≥ 3%)

Or forged aluminum alloy A356-T6 (yield strength ≥ 220 MPa/Brinell hardness ≥ 85 HB)

Heat treatment process: quenching and tempering treatment (QT process)+vibration aging stress relief

Density/Weight: Cast iron parts 7.2 g/cm ³ | Aluminum parts 2.7 g/cm ³ (weight reduction of 35%)

2.Dimensional Tolerances

Wheel hub bearing seat aperture Φ 72.6 ± 0.018 mm

Steering rod ball pin taper hole 1:10 taper ± 0.05 °

The flatness of the brake caliper installation surface is ≤ 0.05 mm

ABS sensor gap 0.5-0.8 mm (adjustable)

3. Mechanical Properties

Ultimate load: 24000 lbf

Fatigue life:>500000 cycles @ 8000 lbf

Impact toughness: cast iron 15 J/cm ² | aluminum 24 J/cm ² (-40 ℃ Charpy impact)

4. Surface Treatment

Coating system:

① Zinc nickel phosphating (film thickness 8-12 μ m) → ② Black cathodic electrophoresis (film thickness 18-22 μ m) → ③ Epoxy powder spraying (weather resistant grade)

Salt spray test: 1200 hours without red rust

Wear resistance: Taber abrasion index ≤ 50 mg/1000 revolutions per minute

Product Uses

Here are specific application scenarios of Steering Knuckle:

Scenario 1: Impact Damage Repair

Pain points: potholes/collisions causing the steering knuckle arm to bend (>2mm affects positioning), leading to tire eating and deviation.

Solution: The deformation resistance of the ductile iron reinforced structure of this product is increased by 65%, and the installation surface is repaired with CNC precision.

Scenario 2: Maintenance in Salt Corrosion Zone

Phenomenon: Snow melting agent corrodes and causes rusting of the shaft neck (perforation after 300 hours of salt spray).

Solution: Triple anti-corrosion coating with salt spray resistance for 1200 hours, suitable for coastal/cold regions.

Scenario 3: Suspension Lift Kit

Requirement: After raising the chassis, the stress on the original ball joint exceeds the limit, accelerating wear and tear.

Solution: Topology optimization and reinforcement to adapt to 3-6 inch lifting, with a shear resistance of 65% at the steering rod interface.

Scenario 4: ABS signal failure repair (Sensor Failure)

Fault: The original ABS card slot is deformed, causing intermittent signal interruption (gap>1.2mm).

Solution: Laser positioning card slot with a tolerance of ± 0.1mm, ensuring a sensor gap of 0.5-0.8mm. Effect: Solve 99% of signal drift problems.

Scenario 5: Collision Reconstruction

Challenge: Hidden cracks in the original parts after collision (invisible to the naked eye).

Solution: Magnetic particle inspection+forging aluminum lightweight option (weight reduction of 35%). Warning: Failure to replace deformed steering knuckles=risk of secondary accidents!

Product Operate Guide

1. Safety preparation

→ After lifting the vehicle, prioritize removing the wheels and secure the suspension system with safety brackets

→ Disconnect the negative terminal of the battery and wear goggles (risk of splashing debris)

2. Disassembly of old parts

→ Mark the position of the steering rod/ABS sensor harness

→ Disassemble the pull rod of the dedicated ball head separator (no hammering!), loosen the wheel hub nut with a torque wrench (120-150Nm)

3. New component installation

Clean the bearing seat and apply high-temperature lubricating grease

→ Install according to the color code (left blue/right red), first manually tighten the bearing fixing nut, and then cross tighten it in three times (final tightening torque: 180Nm ± 5%)

4. Calibration testing

→ Must do four-wheel alignment! Test signal stability after connecting ABS sensor

Recheck the nut torque within 24 hours

Fatal Warning:

① Strictly prohibit welding/heating modification (failure of heat treatment layer)

② Wheel hub bearings must be replaced synchronously (early failure of new products due to slight deformation of old bearings)

FAQ

Q1: Are you manufacturing company?

A: Yes. We are factory, located in Guangzhou. Our factory has certificate of lATF 16949.

Q2: What are your main products?

A: We have steering rack ,steering pump ,wheel hub and bearing ,drive shaft ,alternator,control arm and so on.

Q3: What is the lead time?

A: lt takes 3-7 days when stock is available, and 15-40 days when out of stock.

Q4: What is the warranty?

A: Our guarantee period is 60,000 kilometers or 1 year.

Q5: Do you have samples?

A: Yes, we have samples available. For bulk orders, please inquiry us for more details.