Explore our premium grade selection of OEM and aftermarket hydraulic cylinders, rigorously tested to ensure ultimate reliability and safety.
Established in 2007, Wuhu Qiujing Auto Parts Co., Ltd. has developed into an international pillar of hydraulic braking components. Since 1996, our founding leadership has driven technological transformation in automotive brake manufacturing.
Today, our facility designs, prototypes, and manufactures high-caliber brake master cylinders, wheel cylinders, clutch master cylinders, clutch slave cylinders, and brake calipers. Certified with GB/T19001-2016/ISO 9001:2015 and the automotive-stringent IATF 16949:2016 quality systems, we uphold safety as our absolute prime directive.
Through decades of refining metal casting, heat treatment, cylinder boring, and EPDM sealing technologies, our products deliver consistent, reliable performance under severe thermal and mechanical stresses.
Explore our integrated hydraulic catalog, featuring custom and OEM-level parts engineered for diverse worldwide passenger and commercial vehicles.
Primary hydraulic source engineered for optimal pressure and feedback.
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Heavy-duty slave units designed for precise brake drum activation.
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The OEM D2zz2262a part number is a vital component within standard light commercial and classic passenger braking platforms. Achieving the necessary hydraulic seal integrity requires careful selection of materials and precise surface finish. Our factory employs precision CNC bore-honing techniques, limiting dimensional variance to standard sub-micron tolerances.
This technical whitepaper details the design features, material choices, and quality standards implemented in our production of the D2zz2262a wheel cylinder:
| Parameter Class | Technical Specifications | Engineering Goal |
|---|---|---|
| Material Base | High-tensile Cast Iron (GG25) or anodized Aluminum Alloy (6061-T6) | Resist deformation under intense line pressures reaching up to 15 MPa. |
| Bore Tolerance | ISO H8 Precision Hone (< 0.015 mm roughness profile) | Reduce EPDM cup seal wear and prevent hydraulic fluid bypass. |
| Seal Compound | Ethylene Propylene Diene Monomer (EPDM) - SAE J1603 Compliant | Ensure flexibility and resistance to dot-3, dot-4, and dot-5.1 glycol brake fluids. |
| Surface Finishing | Trivalent Zinc Coating (Cr3+) or Hard Anodizing | Provide corrosion resistance exceeding 240 hours of salt spray exposure (ASTM B117). |
| Spring Configuration | High-tensile music wire (carbon steel) / Stainless Steel 302 | Ensure quick piston return without creating drag on the brake drum. |
During the hydraulic stroke, the inner piston seal is subjected to frictional heating and fluctuating operating pressures. A minor imperfection in the cylinder bore can lead to micro-tearing of the rubber cup, eventually causing fluid leakage and a reduction in hydraulic line pressure. To counter this, Wuhu Qiujing implements a multi-step honing process that matches OEM specifications, creating a cross-hatched pattern that helps retain lubricating brake fluid and extend seal life.
Wuhu Qiujing Auto Parts Co., Ltd. has integrated automation and digital controls within our 6,000-square-meter facility to align with Industry 4.0 standards. This upgrade has improved our capacity and yield, enabling us to consistently manufacture up to 2 million high-quality units annually.
Fully automated honing machines utilize real-time pneumatic measurement to verify bore dimensions after processing, sorting parts with deviations larger than 10 microns.
Semi-automated workstations assemble pistons, springs, and EPDM cups. Dynamic sensors verify the presence and positioning of each seal prior to final pressure testing.
Every single D2zz2262a unit is tested on our pneumatic-hydraulic rigs at low (0.05 MPa) and high (12 MPa) pressures, checking for decay leaks to help ensure field reliability.
Wuhu’s strategic automotive manufacturing cluster provides us with a stable supply of raw materials and access to specialised metal treatment facilities. This localized ecosystem helps protect our production lines from global supply chain disruptions, allowing us to maintain predictable lead times for international distributors, wholesalers, and OE procurement networks.
For international buyers managing tier-1 distribution networks or production lines, sourcing hydraulic parts requires a balance of quality, consistency, and cost-efficiency. Single-sourcing without verification of materials or factory-level testing carries financial and operational risks.
As a specialized factory, Wuhu Qiujing provides OEM/ODM services that address these requirements through clear commercial and technical options:
Our logistical network utilizes nearby deepwater ports in Shanghai and Ningbo, enabling efficient ocean transport to North American, European, and Asia-Pacific markets. We also coordinate with third-party inspection firms (such as SGS, TÜV, and Intertek) to verify product specifications before dispatch.
Automotive safety systems must comply with strict national and international regulatory frameworks. To support our clients' importing and distribution requirements, our manufacturing processes are aligned with key global safety and environmental guidelines:
Our facility operates under an IATF-compliant quality management system, implementing continuous defect prevention, variations reduction, and supply chain control.
Our cylinder designs are tested to meet the performance criteria of SAE J1153 and J1154 for hydraulic brake cylinders under variable temperature conditions.
We use chromium-free surface coatings (Cr3+ zinc plating) and raw materials that comply with European environmental directives for hazardous substance restriction.
Wuhu Qiujing also conducts regular internal audits to monitor compliance with IATF standards. This oversight ensures that changes to tool designs, raw material batches, or machining parameters are fully documented. For safety-critical components like the D2zz2262a, this level of process traceability helps protect our partners from compliance and liability issues in their home markets.
The automotive industry is transitioning toward electrification and lower vehicle weights, which alters the requirements for hydraulic braking systems. While brake-by-wire and electric park systems are growing in use, hydraulic cylinders remain key safety backups and cost-effective actuators for light commercial vehicles, classic retrofits, and regional vehicle designs.
Our engineering roadmap focuses on three main development areas to meet these evolving requirements:
By investing in these material updates and manufacturing technologies, Wuhu Qiujing aims to supply hydraulic components that meet the requirements of both classic vehicle models and modern automotive platforms.
Get answers to common technical, logistics, and manufacturing questions regarding our OEM D2zz2262a and other hydraulic brake cylinders.
Wuhu Qiujing maintains rigorous quality standards, supported by verified international industry certifications.
6,000+ sqm factory floor with in-house CNC machining, honing, assembly, and testing lines.
Full manufacturing compliance under IATF 16949:2016 and ISO 9001:2015 frameworks.
Our management and design teams bring over 20 years of experience in hydraulic system manufacturing.
More than 50 experienced production technicians manage our manufacturing, quality control, and logistics systems.
Read about our latest facility developments, production milestones, and scheduling updates.
Updates on scheduling and customer support coverage during the upcoming national holiday period.
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Qiujing Auto Parts has resumed full operations following our scheduled maintenance and holiday period.
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Our logistics team successfully finalized and dispatched all late-season container orders ahead of schedule.
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Contact our sales and engineering teams to request pricing, material certificates, or technical drawings for the D2zz2262a and related brake components.
Additional OEM-spec clutch slave cylinders, brake master cylinders, and brake wheel pumps from our manufacturing catalog.
