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Hydraulic Cylinder
The hydraulic cylinder is one of the most critical components in a press brake’s hydraulic system, responsible for converting hydraulic pressure into mechanical motion. Its primary role is to drive the ram (or upper beam) up and down, exerting the necessary bending force on the workpiece through the upper die. Whether bending thin sheets or heavy plate, the hydraulic cylinder ensures accurate and repeatable motion under high pressure and load.
In a press brake, the hydraulic system creates pressure through a pump and transmits this energy via hydraulic fluid to the cylinders. Each hydraulic cylinder acts as a powerful linear actuator that drives the vertical movement of the ram, ensuring the force is applied uniformly and with high precision during the bending process.
Most press brakes use a dual-cylinder system, with one hydraulic cylinder mounted on each side frame (side housing). This symmetrical configuration ensures even distribution of pressure, minimizes deflection, and contributes to consistent bend angles and improved part accuracy.
Our hydraulic cylinders are designed with robust architecture and tight manufacturing tolerances. The structure typically includes:
Cylinder Barrel – Houses the piston and hydraulic fluid; made from high-strength alloy steel for durability.
Piston and Piston Rod – The piston divides the internal chamber and transmits force to the ram through the rod.
End Caps and Seals – Ensure airtight chambers, prevent leakage, and withstand high internal pressures.
Bearing and Guide Rings – Maintain piston alignment and reduce wear during operation.
The inner surfaces of the cylinder barrel are precision-honed to reduce friction and ensure smooth piston travel, critical for maintaining control and repeatability.
Material choice is crucial for withstanding the high pressure and frequent cycling of hydraulic cylinders. Our cylinders are constructed from:
Cylinder body: Heat-treated alloy steel (e.g., 42CrMo or ST52) for strength, fatigue resistance, and wear tolerance.
Piston rod: Induction-hardened and chrome-plated steel, offering corrosion resistance and surface hardness to extend lifespan.
Seals: High-performance polyurethane or Viton seals for high-pressure tolerance and thermal stability.
These materials ensure our cylinders perform reliably under high pressure (up to 25–30 MPa) and in demanding working environments.
High Load-Bearing Capacity
Our cylinders are designed to withstand significant axial loads without deformation, ensuring long-term reliability even in large-tonnage press brakes.
Precision Machining
All components are CNC-machined for tight tolerances, ensuring smooth movement, minimal energy loss, and accurate bending.
Low Friction, High Efficiency
Honed cylinder bores and specialized seals reduce friction, increasing energy efficiency and extending component life.
Leak-Proof Design
Optimized seal geometry and high-pressure testing eliminate oil leakage — a common cause of press brake downtime.
Custom Configurations Available
Our hydraulic cylinders can be customized for different tonnages, stroke lengths, mounting styles, and connection ports.
Hydraulic cylinders are typically mounted vertically on the left and right side housings of the press brake frame. The piston rods connect directly to the upper beam (ram), and the synchronized movement of both cylinders ensures consistent force during bending operations.
The position sensors and servo valves integrated with the cylinder may allow for closed-loop control in CNC press brakes, contributing to high-precision bending and automated compensation for material spring-back.
As a professional supplier of press brake parts, we offer hydraulic cylinders that are:
Engineered for durability – Built with high-quality materials and surface treatments to withstand harsh industrial use.
Compatible with major brands – Fit for replacement or OEM use in press brakes from leading manufacturers.
Cost-effective – Our cylinders deliver long-term performance with minimal maintenance and reduced downtime.
Customizable – Designed to meet your machine's exact specifications, including tonnage, stroke, and mounting requirements.
Strictly tested – 100% pressure-tested and inspected for leakage, performance, and dimensional accuracy.
We understand how critical hydraulic reliability is in bending operations. Our hydraulic cylinders are trusted by fabricators and press brake manufacturers for delivering powerful, accurate, and smooth performance.
CNC press brakes (synchronised dual-axis systems)
Hydraulic bending machines
Tandem press brakes
Custom forming equipment
The hydraulic cylinder is the power behind the press brake. Precision engineering, high-strength materials, and advanced sealing technology ensure our cylinders deliver consistent force and control — the foundation of accurate sheet metal bending. Whether you're replacing a worn component or sourcing cylinders for OEM production, we offer durable, high-performance hydraulic solutions tailored to your needs.
The hydraulic cylinder is one of the most critical components in a press brake’s hydraulic system, responsible for converting hydraulic pressure into mechanical motion. Its primary role is to drive the ram (or upper beam) up and down, exerting the necessary bending force on the workpiece through the upper die. Whether bending thin sheets or heavy plate, the hydraulic cylinder ensures accurate and repeatable motion under high pressure and load.
In a press brake, the hydraulic system creates pressure through a pump and transmits this energy via hydraulic fluid to the cylinders. Each hydraulic cylinder acts as a powerful linear actuator that drives the vertical movement of the ram, ensuring the force is applied uniformly and with high precision during the bending process.
Most press brakes use a dual-cylinder system, with one hydraulic cylinder mounted on each side frame (side housing). This symmetrical configuration ensures even distribution of pressure, minimizes deflection, and contributes to consistent bend angles and improved part accuracy.
Our hydraulic cylinders are designed with robust architecture and tight manufacturing tolerances. The structure typically includes:
Cylinder Barrel – Houses the piston and hydraulic fluid; made from high-strength alloy steel for durability.
Piston and Piston Rod – The piston divides the internal chamber and transmits force to the ram through the rod.
End Caps and Seals – Ensure airtight chambers, prevent leakage, and withstand high internal pressures.
Bearing and Guide Rings – Maintain piston alignment and reduce wear during operation.
The inner surfaces of the cylinder barrel are precision-honed to reduce friction and ensure smooth piston travel, critical for maintaining control and repeatability.
Material choice is crucial for withstanding the high pressure and frequent cycling of hydraulic cylinders. Our cylinders are constructed from:
Cylinder body: Heat-treated alloy steel (e.g., 42CrMo or ST52) for strength, fatigue resistance, and wear tolerance.
Piston rod: Induction-hardened and chrome-plated steel, offering corrosion resistance and surface hardness to extend lifespan.
Seals: High-performance polyurethane or Viton seals for high-pressure tolerance and thermal stability.
These materials ensure our cylinders perform reliably under high pressure (up to 25–30 MPa) and in demanding working environments.
High Load-Bearing Capacity
Our cylinders are designed to withstand significant axial loads without deformation, ensuring long-term reliability even in large-tonnage press brakes.
Precision Machining
All components are CNC-machined for tight tolerances, ensuring smooth movement, minimal energy loss, and accurate bending.
Low Friction, High Efficiency
Honed cylinder bores and specialized seals reduce friction, increasing energy efficiency and extending component life.
Leak-Proof Design
Optimized seal geometry and high-pressure testing eliminate oil leakage — a common cause of press brake downtime.
Custom Configurations Available
Our hydraulic cylinders can be customized for different tonnages, stroke lengths, mounting styles, and connection ports.
Hydraulic cylinders are typically mounted vertically on the left and right side housings of the press brake frame. The piston rods connect directly to the upper beam (ram), and the synchronized movement of both cylinders ensures consistent force during bending operations.
The position sensors and servo valves integrated with the cylinder may allow for closed-loop control in CNC press brakes, contributing to high-precision bending and automated compensation for material spring-back.
As a professional supplier of press brake parts, we offer hydraulic cylinders that are:
Engineered for durability – Built with high-quality materials and surface treatments to withstand harsh industrial use.
Compatible with major brands – Fit for replacement or OEM use in press brakes from leading manufacturers.
Cost-effective – Our cylinders deliver long-term performance with minimal maintenance and reduced downtime.
Customizable – Designed to meet your machine's exact specifications, including tonnage, stroke, and mounting requirements.
Strictly tested – 100% pressure-tested and inspected for leakage, performance, and dimensional accuracy.
We understand how critical hydraulic reliability is in bending operations. Our hydraulic cylinders are trusted by fabricators and press brake manufacturers for delivering powerful, accurate, and smooth performance.
CNC press brakes (synchronised dual-axis systems)
Hydraulic bending machines
Tandem press brakes
Custom forming equipment
The hydraulic cylinder is the power behind the press brake. Precision engineering, high-strength materials, and advanced sealing technology ensure our cylinders deliver consistent force and control — the foundation of accurate sheet metal bending. Whether you're replacing a worn component or sourcing cylinders for OEM production, we offer durable, high-performance hydraulic solutions tailored to your needs.
