S21-2915010 Shock Absorber for Chery QQ

Product Introduction

S21-2915010 Shock Absorber for Chery QQ

● Vibration absorption: Convert the kinetic energy of the suspension spring into thermal energy to suppress vehicle bounce

● Tire ground contact: Keep the tire in continuous contact with the road surface, reducing the braking distance on wet and slippery roads by 30%

● Attitude control: reduce cornering roll by 45% and brake nodding phenomenon

Technological breakthrough:

● Double piston design: Low speed valve comfortably filters out bumps, high-speed valve suppresses severe impacts

● Nitrogen pressurization: ≥ 25 bar pressure to produce air bubbles (without failure at high temperatures)

● Laser welding: fully sealed oil cylinder

Product Advantage

1. [Dual valve nitrogen technology] Segmented damping control+25bar high-pressure nitrogen gas

Low speed valve (≤ 0.3m/s) optimizes gravel road shock absorption, high-speed valve (≥ 0.6m/s) suppresses pit impact, nitrogen pressure of 25bar eliminates high temperature failure of shock absorbers. Tested to reduce 60% of brake nodding phenomenon, solve SUV high-speed drifting sensation, and enhance confidence in handling on wet and slippery roads.

2. [Zero leakage durability] Laser welded oil seal+500000 fatigue certification

The oil cylinder adopts plasma spiral welding (melting depth ≥ 2mm), and the multi-layer PTFE oil seal has undergone 500000 stroke tests. Through 300 hours of bench vibration (amplitude ± 100mm), the common problem of shock absorber oil leakage has been completely eliminated.

3. [Full temperature stability] Wide temperature range hydraulic oil+-40 ℃ cold start guarantee

Special alkylbenzene hydraulic oil (viscosity index>180) maintains fluidity at -40 ℃, and viscosity attenuation<15% at high temperature of 130 ℃. Eliminate winter shock absorption noise and filter failure issues.

4. [Precise adaptation] Original factory damping curve replication+95% model direct installation

Based on OE dynamometer data development, the damping force error is controlled within ± 5%. The tolerance of the bolt holes on the attached frame is ± 0.2mm, which enables the replacement of shock absorbers without adjustment and avoids the loss of four-wheel alignment parameters.

5. [Off road reinforcement] 3.0mm thick cylinder tube+double tube impact resistant structure

The wall thickness has increased by 50% compared to conventional components (up to 3.0mm), and the oil chamber of the compound cylinder buffers the instantaneous impact. Through 100000 off-road road spectrum tests (G-class road surface), solve the bending pain points of tough off-road shock absorbers.

Technical Parameters

Main materials:

Outer tube: made of high-strength steel, with a surface treated with chrome/zinc plating or special anti-corrosion coating (rust proof, wear-resistant, and extended service life).

Piston rod: Precision ground hard chrome treated high-strength steel rod (high hardness, corrosion resistance, low friction).

Sealing element: High quality rubber or polytetrafluoroethylene material that is resistant to high temperatures and wear (effectively preventing oil leakage).

Internal valve system: Precision machined valve components ensure precise damping force control.

Working medium: high-quality special shock absorber oil (with excellent viscosity stability, foam resistance and low-temperature fluidity).

Working temperature range: -30 ° C to+120 ° C

Dustproof design: Equipped with a built-in dust cover or multi-layer sealing system (effectively preventing dust and sand from entering, protecting the piston rod and seals).

Performance characteristics:

Optimize valve system design, reduce thermal attenuation, and maintain long-term stable performance.

Low friction sealing technology enhances response sensitivity.

Special surface treatment, excellent corrosion resistance, and extended service life.

Effectively reduce body roll and improve cornering stability.

Significantly improve ride comfort on bumpy roads.

Quality and Certification:

Meets or exceeds quality management system standards such as ISO 9001/IATF 16949.

Through rigorous bench testing (such as fatigue durability testing, performance testing, salt spray testing, etc.).

Product Uses

Here are specific application scenarios of Shock Absorber:

1. Coping with daily bumps and potholes to improve commuting comfort

*Problem: Urban road repairs, speed bumps, and small potholes are everywhere. Aging shock absorbers can turn every bump into an annoying impact, causing severe shaking of the vehicle and discomfort for passengers.

*Solution: Our high-performance shock absorbers can quickly absorb road impact energy and effectively suppress excess spring bounce.

*Benefits: Significantly improve the smoothness and comfort of daily driving, making commuting or picking up and dropping off family members easier and more comfortable, bidding farewell to the "wobbly" experience.

2. Enhance high-speed driving stability and cornering confidence

*Problem: When driving at high speeds, the vehicle body is prone to drifting and swaying; When cornering, there is severe lateral tilt, and the vehicle feels like it is about to lose control. The driver is nervous, and passengers get carsick.

*Solution: The shock absorber provides critical damping force, controls the compression and rebound speed of the spring, and stabilizes the vehicle's posture.

*Benefits: After installation, the vehicle is more grounded and stable during high-speed cruising; When cornering, the lateral tilt is significantly reduced, and the tire grip is enhanced, giving the driver stronger confidence and safety in handling.

3. Solve the problems of "nodding" and "sitting back", optimize the braking and acceleration experience

*Problem: When braking suddenly, the front of the car sinks significantly (nodding), and when accelerating rapidly, the rear of the car is noticeably pressed down (sitting backwards), which not only affects comfort but also affects the dynamic balance of the vehicle.

*Solution: A high-performance shock absorber can quickly suppress the severe deformation of the spring during braking and acceleration.

*Benefits: Significantly reduce the phenomenon of "nodding" during braking and "sitting back" during acceleration, making the vehicle more dynamic and improving driving smoothness. At the same time, it helps maintain the optimal tire contact area, indirectly improving braking efficiency.

4. Eliminate annoying noises and restore driving quietness

*Problem: The internal valve system of the old shock absorber has failed, oil leakage or external damage, resulting in abnormal noises such as "clang", "creak", "thud" when driving on uneven roads.

*Solution: Replace the shock absorber with a brand new one, use high-quality seals and internal components, and restore normal damping function.

*Benefits: Effectively eliminate various abnormal noises caused by the failure of shock absorbers, restore a peaceful cabin environment, improve driving quality, and avoid misjudging other chassis faults.

5. Correct abnormal tire wear and extend tire life

*Problem: The failed shock absorber cannot effectively control the up and down jumping of the wheels, resulting in the tires being unable to continuously and smoothly contact the ground ("jumping tire"), causing uneven wavy or cup-shaped wear on the tires.

*Solution: Good shock absorbers ensure that the tires always maintain optimal contact with the road surface.

*Benefits: Prevent or correct abnormal tire wear caused by shock absorber failure, protect your tire investment, extend its service life, and ensure driving safety.

6. Improve the control ability during loading and towing

*Problem: When the vehicle has a heavy load or is towing a camper/trailer, the original or aging shock absorbers may not be able to handle it properly, resulting in excessive sinking of the body and severe rear suspension shaking, which affects handling and stability.

*Solution: Choose reinforced or specially designed shock absorbers for heavy loads to provide stronger support and damping control.

*Benefits: Provides better body support when carrying heavy loads or towing, effectively suppresses shaking, significantly improves driving stability and safety, and allows you to travel more confidently.

7. Restore a new car like driving experience

*Problem: Over time, the performance of the original shock absorbers will gradually deteriorate, and the overall driving texture of the vehicle will become loose, lacking toughness, and no longer feel "tight".

*Solution: Replacing a set of high-quality shock absorbers is a crucial step in restoring the overall integrity of the chassis.

*Benefit: It allows your car to regain a tight and solid driving experience, just like a new car, comprehensively improving driving pleasure and passenger satisfaction. It is the most cost-effective way to renew the chassis.

Product Operate Guide

1. Disassemble the old shock absorber:

Lift and stabilize the vehicle, remove the wheels. Find the position of the shock absorber (usually on the inside of the wheel).

Be careful to remove the fixing parts that connect the upper end (tower top bolt, which may require operation inside the engine compartment) and lower end (installation bolt) of the shock absorber. Pay attention to the vehicle model that supports the spring, and use a dedicated spring compressor to safely remove the top nut to prevent the spring from popping out! After loosening, the old shock absorber assembly can be removed.

2. Assemble a new shock absorber (if required):

If the new shock absorber is not pre installed with springs, it is necessary to be extremely careful to compress the old spring (or new spring) using a special tool, and install it on the piston rod of the new shock absorber in the correct order and direction, along with all supporting components such as buffer blocks, dust covers, top rubber/bearings, etc. This is a high-risk step!

3. Install a new shock absorber:

Place the assembled new shock absorber assembly (or complete assembly) into the installation position, and first use your hands to attach all bolts (upper tower top bolt and lower installation bolt), ensuring that the position is correct and the bushing is not twisted.

Key step: After the vehicle has landed on all four wheels (or simulated load state), use a torque wrench to tighten all bolts step by step and cross according to the specified torque value (refer to the maintenance manual or product instructions). This is the key to ensuring the normal operation of the lining and avoiding abnormal noise!

4. Reset and check:

Reinstall the wheels and lower the vehicle. Perform four-wheel alignment! Replacing shock absorbers usually affects the positioning parameters (especially the front wheels), and not doing positioning can lead to abnormal tire wear and deviation. Finally, conduct a road test to check for any abnormal noise, oil leakage, and normal vehicle handling.

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.