Hydraulic System

Industrial Hydraulic Systems & Custom Power Units for OEM Machinery

Industrial hydraulic systems for continuous fluid power transmission in heavy machinery, presses, and automated industrial equipment. Built with precision gear and piston pumps, integrated manifold blocks, and robust filtration assemblies to ensure stable pressure control, minimal thermal drift, and leak-free operation under heavy loads.

Key Applications: Hydraulic presses, metal stamping lines, injection molding machinery, heavy material handling equipment, and automated industrial test benches.

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Technical Selection Parameters Table

Parameter Metric	Standard Industrial HPU	High-Pressure Heavy-Duty HPU	Compact Mobile Hydraulic Pack
Max Operating Pressure	Up to 21 MPa (210 Bar)	Up to 31.5 MPa (315 Bar)	16 MPa to 20 MPa
Pump Type	Vane Pump or Gear Pump	Axial Piston Pump	Reversible Gear Pump
Flow Rate Range	20 L/min to 160 L/min	50 L/min to 500 L/min	4 L/min to 30 L/min
Motor Power	2.2 kW to 37 kW	15 kW to 160 kW	0.8 kW to 4.5 kW
Reservoir Capacity	100L to 400L	500L to 2,000L	8L to 50L
Filtration Accuracy	Return line: 10 Micron	Pressure line: 5 Micron	Suction strainer: 100 Mesh
Fluid Compatibility	ISO VG 46 / VG 68 Mineral Oil	ISO VG 46, Synthetic Oil, Water-Glycol	ISO VG 32 / VG 46
Operating Temp Range	-15°C to +70°C	-20°C to +80°C	-25°C to +60°C

Industrial Applications

Metal Forming & Presses

Drives multi-stage hydraulic cylinders in deep drawing presses and forging machines with stable tonnage control.

Automotive Manufacturing Lines

Operates automated transfer clamps, fixtures, and welding jigs requiring fast action and precise positioning.

Plastics Processing

Powers clamping, injection, and ejection circuits in large injection molding machines.

Heavy Material Handling

Controls high-load lifting gantries, marine winches, and steel mill roller tables.

Quality Control Before Shipment

Every hydraulic system undergoes strict testing before packaging and export:

Pressure Testing: Manifolds and welded tanks are pressurized to 1.5 times working pressure for 30 minutes to check for weld strength and zero external leaks.

Full-Load Function Test: Each assembled unit runs on a dynamic test rig. Oil flow, pump efficiency, relief valve pressure, and valve response times are recorded.

Temperature Test: Continuous 2-hour full-load test to monitor oil temperature stabilization and cooling efficiency.

Cleanliness Check: Oil samples are tested to ensure fluid cleanliness meets ISO 4406 17/15/12 standards before sealing ports.

Surface Coating: External steel parts are blast-cleaned to Sa 2.5, then coated with epoxy primer and polyurethane paint. Internal tanks are cleaned and sealed with oil-resistant enamel.

Custom Hydraulic Components and Systems

For OEM applications requiring custom layouts, engineering is available based on customer drawings or duty-cycle requirements:

Custom Manifold Engineering

Optimized internal oil passages to reduce pressure drop across multi-station valve blocks.

Electrical Control Integration

PLC-controlled electrical boxes with touchscreens, oil temperature sensors, and level switches wired directly to the system.

Cooling and Heating

Integration of air-oil coolers, water heat exchangers, or immersion heaters based on the local working environment.

FAQ

Q: What hydraulic oil and cleanliness levels are recommended?

A: Standard mineral hydraulic oils conforming to ISO VG 46 or ISO VG 68 (at 40°C) are recommended. Systems are delivered with cleanliness maintained to ISO 4406 Class 18/16/13 or better. For fire-resistant fluids like water-glycol, Viton seals must be requested during the inquiry stage.

Q: How do you prevent contamination during shipping and storage?

A: All open ports and threaded connections are sealed with steel plugs or high-density plastic protectors. Systems shipped without oil are charged with dry nitrogen gas to prevent internal rust.

Q: What is the standard lead time for custom hydraulic units?

A: Standard catalog units require 3 to 4 weeks. Custom systems requiring special manifold designs, unique pumps, and PLC control cabinets typically require 6 to 8 weeks after drawing approval.

Q: Can you provide third-party inspection reports?

A: Yes. Material test certificates (EN 10204 3.1) and third-party inspection reports from agencies like SGS, BV, or TÜV can be arranged before production.

Q: What documents are included with each shipment?

A: Each shipment includes hydraulic schematics, electrical wiring diagrams, component data sheets, bill of materials, spare parts list, and factory test reports.

Q: How is cooling handled for hot working environments?

A: Cooling capacity is calculated based on maximum heat load and local ambient temperatures. Air-oil coolers with automatic temperature switches are added to keep oil viscosity within the optimal range.

We are one of the most experienced hydraulic system manufacturers and suppliers in China, specialized in providing high quality customized products. Please feel free to wholesale bulk durable hydraulic system in stock here from our factory. Contact us for quotation.