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Hydraulic Oil Cooler

Heavy-duty Hydraulic Oil Cooler engineered to stabilize hydraulic fluid temperatures. It maintains optimal oil viscosity, prevents seal degradation, and eliminates thermal breakdown in high-pressure hydraulic power units (HPUs), plastic injection molding lines, construction machinery, and industrial gearboxes.

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Product Overview
Heavy-duty Hydraulic Oil Cooler engineered to stabilize hydraulic fluid temperatures. It maintains optimal oil viscosity, prevents seal degradation, and eliminates thermal breakdown in high-pressure hydraulic power units (HPUs), plastic injection molding lines, construction machinery, and industrial gearboxes.

Technical Parameters & Material Verification

Engineering Item	Specification Range	E-E-A-T & Sourcing Compliance
Core Metallurgy	SUS316 / SUS316L / Heavy-Wall Carbon Steel	100% traceable mill sheets; resists fluid erosion
Brazing Matrix	99.9% Pure Copper / Nickel Alloy	High-strength fusion to absorb continuous hydraulic shock
Design Pressure	30 bar – 50 bar (Custom high-pressure models available)	Rated specifically for severe return-line pressure spikes
Test Pressure	45 bar – 75 bar (1.5x design pressure)	100% factory pressure validated; zero burst risk
Operating Temp.	-196°C to +250°C	Handles extreme cold-start to peak-load thermal spans
Fluid Compatibility	Mineral Oils, Synthetic Fluids, Water-Glycol, HFD-R	Highly inert to specialized fire-resistant hydraulic oils
Certificates	ASME (U/U2 Stamps), National Board, AD2000	100% approved for global factory equipment import
Integrity Testing	100% Helium Leak Test & Pneumatic Pass	Molecular-level factory verification against cross-contamination

Engineering Mechanics: Core Solutions
High-Pulse Resistance & Zero Bursting
We use thick end-plates (5.0 mm+) and an ultra-dense internal node matrix. Automated ISO 3834-2 vacuum furnace brazing at 1100°C fuses thousands of plate intersections into a single, rigid block that distributes pressure shocks evenly and increases fatigue life by 300%.
High-Efficiency Cooling for High-Viscosity Oils
We use asymmetric Deep-Chevron plate corrugations. This geometry forces thick hydraulic oil into a three-dimensional swirling turbulence even at low flow rates, breaking down boundary thermal layers to boost the heat transfer coefficient by 3–5 times over standard smooth-tube coolers.
Cold-Start Cracking Protection
Our selection software optimizes the plate channel pitch based on critical fluid shear stress calculations to eliminate dead zones. For cold-weather startups where oil thickens, we provide integrated differential pressure bypass valves (Cracking Pressure: 3–5 bar) to instantly shunt oil surges and protect the core.

Advanced Manufacturing Pipeline
1. Precision High-Speed Stamping Formed with custom hydraulic dies to eliminate microscopic stress fissures on SUS316L sheets.
2. Robotic Layer Alignment Computer-guided multi-circuit stacking; uniform copper/nickel brazing foil coverage.
3. 1100°C Vacuum Fusion Fused inside an oxygen-free vacuum furnace; eliminates dry nodes and micro-voids at joints.
4. Molecular-Level Dual Leak Test Underwater high-pressure pneumatics combined with helium mass spec to detect micron-level pinholes.

OEM/ODM & Procurement Support
Viscosity-Curve Sizing Support: Provide us with your oil grade (e.g., ISO VG 32, 46, 68), inlet temperature, and maximum allowable fluid pressure drop ($\Delta P$). Our engineers will run advanced software simulations to output a tailored, certified configuration.
Flexible Port Customization: Full hardware customization including high-pressure SAE hydraulic flanges, BSP/NPT threads, metric unions, custom shock-absorbing mounting feet, and pre-fit fire-retardant EPP insulation shells.

FAQ

Q: Does standard copper brazing cause chemical fluid degradation when handling premium synthetic or fire-resistant oils?

A: Yes, in specialized applications. While copper-brazed units are ideal for conventional mineral hydraulic oils, copper acts as a chemical catalyst that accelerates oil hydrolysis and acidification in sensitive loops using phosphate ester fire-resistant fluids (HFD-R). To prevent this, we swap the core matrix for our 100% Nickel-Brazed Series (NPHE) to guarantee complete chemical inertness and zero system contamination.

Q: Are your manufacturing test logs and quality certificates legally accepted for regional safety audits in the US and Europe?

A: 100% Yes. Because our facility maintains active official ASME U & U2 code stamps and European AD2000-Merkblatt registration, every shipment is legally backed by a complete compliance documentation folder. This includes a certified Manufacturer's Data Report for Pressure Vessels (Form U-1A), traceable EN 10204 3.1 mill material sheets, and authorized National Board (NB) registration data.

Q: How do you guarantee bulk batch lead times and ensure safety against transit corrosion during ocean freight?

A: Standard OEM batch contracts are processed and cleared at Qingdao Port within 15–20 days under flexible FOB, CIF, or DDP terms. Post-testing, all oil coolers undergo thorough internal cleaning, absolute hot-air drying, and high-purity Nitrogen Purging to eliminate moisture ingress during ocean transit. The units are then bolted inside heavy-duty, reinforced export sea crates for maximum mechanical protection.

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Hydraulic Oil Cooler

Technical Parameters & Material Verification

FAQ

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