Main Hydraulic Cylinder for Washing Machine Drum Forming Press

Product Specifications

Technical details and manufacturing context for Main Hydraulic Cylinder

Definition

The main hydraulic cylinder is the core force-generating component in an industrial washing machine drum forming press. It converts hydraulic pressure into linear mechanical motion to drive the press ram during the forming process, applying precise, high-pressure force to shape metal sheets into drum components. The cylinder operates on Pascal's principle: pressurized hydraulic fluid enters the cylinder chamber, forcing the piston to extend and generate linear force; retraction occurs when fluid pressure is redirected to the opposite side of the piston. Key specifications include a bore diameter of 200–400 mm (ISO 6020-2), stroke length of 500–1500 mm (ISO 6020-2), operating pressure of 1.0–1.6 MPa, maximum pressure of 25 MPa (ISO 3320), piston rod diameter of 100–200 mm (ISO 6195), forming force of 3000–8000 kN, position repeatability of ±0.05 mm (ISO 9283), operating temperature range of -20 to 80°C (ISO 4413), ingress protection rating of IP54–IP65 (IEC 60529), cylinder material of 45# carbon steel (GB/T 699), seal material of NBR (ISO 3601), and weight of 500–2000 kg. Materials on file include chrome-plated steel, high-strength alloy steel, and sealing materials such as polyurethane and nitrile rubber. These values are reference ranges for directory purposes and must be verified with the legal manufacturer or supplier for the specific model and application. The cylinder is a component used in machinery and equipment manufacturing, specifically in the drum forming press. Its selection depends on required forming force, stroke length, and operating pressure, which must match the press tonnage rating. Interfaces include hydraulic fluid connections and mechanical mounting points. Verification questions should address actual bore, stroke, pressure ratings, and compliance with relevant standards. Maintenance signals include seal degradation above 80°C, leakage, or reduced force output. Failure boundaries include exceeding maximum pressure or temperature limits, which can cause seal failure or structural damage.

Working Principle

The main hydraulic cylinder operates on Pascal's principle, where hydraulic fluid under pressure enters the cylinder chamber, forcing the piston to extend and generate linear force. The cylinder retracts when fluid pressure is redirected to the opposite side of the piston. This linear motion drives the press ram to shape metal sheets into drum components. The force generated is proportional to the fluid pressure and the piston area. The cylinder's bore diameter and operating pressure determine the maximum forming force, while the stroke length must cover the full drum depth. The piston rod diameter affects buckling strength, and position repeatability ensures consistent drum wall thickness. The system includes seals that degrade above 80°C, so operating temperature must be controlled. The cylinder is protected against dust and water jets with an IP54–IP65 rating. The working principle is fundamental to the press's operation, converting hydraulic energy into mechanical work.

Common Materials

Chrome-plated steel, High-strength alloy steel, Sealing materials (polyurethane, nitrile rubber)

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bore Diameter	200–400 mm	Determines the maximum forming force.ISO 6020-2
Stroke Length	500–1500 mm	Must cover the full drum depth.ISO 6020-2
Maximum Pressure	25 MPa	Peak pressure during forming.ISO 3320
Piston Rod Diameter	100–200 mm	Affects rod buckling strength.ISO 6195
Forming Force	3000–8000 kN	Must match the press tonnage rating.
Position Repeatability	±0.05 mm	Ensures consistent drum wall thickness.ISO 9283
Operating Temperature	-20–80 °C	Seals degrade above 80°C.ISO 4413
Ingress Protection	IP54–IP65	Protects against dust and water jets.IEC 60529
Cylinder Material	45#	High-strength carbon steel.GB/T 699
Seal Material	NBR	Nitrile rubber for oil resistance.ISO 3601
Weight	500–2000 kg	Affects press frame design.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Cylinder Barrel Part
Contains hydraulic fluid and guides piston movement

Material: Chrome-plated steel
Piston Part
Separates pressure chambers and transmits force to rod

Material: High-strength alloy steel
Piston Rod Part
Transmits linear force to the press ram

Material: Hardened and chrome-plated steel
Seals and Gaskets Part
Prevent hydraulic fluid leakage between chambers

Material: Polyurethane, nitrile rubber
Mounting Hardware Part
Secures cylinder to press frame

Material: Steel alloy

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Frequently Asked Questions

What is the main hydraulic cylinder used for?

It generates the main forming force in an industrial washing machine drum forming press, converting hydraulic pressure into linear motion to shape metal sheets into drum components.

What are the key specifications to consider?

Key specifications include bore diameter (200-400 mm), stroke length (500-1500 mm), operating pressure (1.0-1.6 MPa), maximum pressure (25 MPa), forming force (3000-8000 kN), and position repeatability (±0.05 mm). These must be verified for the specific model.

What standards apply to this cylinder?

Relevant standards include ISO 6020-2 for bore and stroke, ISO 3320 for maximum pressure, ISO 6195 for piston rod diameter, ISO 9283 for repeatability, ISO 4413 for temperature, IEC 60529 for ingress protection, and GB/T 699 for material. Compliance must be confirmed with the manufacturer.

What are common maintenance signals?

Signals include seal degradation above 80°C, hydraulic fluid leaks, reduced forming force, or abnormal noise. Regular inspection of seals and pressure levels is recommended.

Data Basis

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Preliminary Technical Classification

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pressure:	Max 350 bar (5000 psi)
flow rate:	Up to 100 L/min
temperature:	-20°C to 80°C
slurry concentration:	Not applicable - clean hydraulic oil only

Main Hydraulic Cylinder

Product Specifications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

Reliability & Engineering Risk Analysis

Compliance & Manufacturing Standards