Boom Cylinder

Product Specifications

Technical details and manufacturing context for Boom Cylinder

Definition

The boom cylinder is a hydraulic component used in the boom section of a hydraulic arm (boom and stick assembly). It converts hydraulic fluid pressure into mechanical linear motion to control the boom's angle and reach, generating the primary lifting and lowering force. The cylinder operates on the principle of fluid power: pressurized hydraulic fluid enters one side of the cylinder, acting on the piston surface to create force that moves the piston rod. This linear motion is transferred to the boom linkage, extending or retracting the boom. Directional control valves manage fluid flow to either side of the piston. Key parameters include bore diameter (40–200 mm), rod diameter (20–100 mm), stroke length (100–2000 mm), operating pressure (16–25 MPa), maximum pull force (20–400 kN), maximum push force (25–500 kN), operating temperature (-20–80 °C), seal material (NBR–PTFE), cylinder tube material (ST52–CK45), rod material (CK45–42CrMo4), surface treatment (Cr–Ni), weight (10–500 kg), and mounting type (C–E). These values are reference ranges and must be confirmed for the actual model. Materials on file include high-strength alloy steel, chromium-plated steel rod, and polyurethane seals. Standards such as ISO 6020-2, ISO 3320, ISO 5597, ISO 1629, DIN 2391, DIN 17200, ISO 2081, and ISO 6982 are listed as procurement references. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

The boom cylinder operates on fluid power. Pressurized hydraulic fluid enters one side of the cylinder, acting on the piston surface area to create force, which moves the piston rod. This linear motion is transferred to the boom linkage, extending or retracting the boom. Directional control valves manage fluid flow to either side of the piston.

Common Materials

High-strength alloy steel, Chromium-plated steel rod, Polyurethane seals

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bore Diameter	40–200 mm	Determines force output; larger bore for higher force.ISO 6020-2
Rod Diameter	20–100 mm	Affects buckling strength and retraction speed.ISO 6020-2
Stroke Length	100–2000 mm	Defines boom reach; longer stroke for larger working range.ISO 6020-2
Operating Pressure	16–25 MPa	Higher pressure increases force but requires stronger seals.ISO 3320
Maximum Pull Force	20–400 kN	Calculated from bore and pressure; critical for lifting capacity.
Maximum Push Force	25–500 kN	Higher than pull force due to rod area reduction.
Operating Temperature	-20–80 °C	Seal materials degrade outside this range.ISO 5597
Seal Material	NBR–PTFE	NBR for general use, PTFE for high temperature or low friction.ISO 1629
Cylinder Tube Material	ST52–CK45	ST52 for welded, CK45 for honed seamless.DIN 2391
Rod Material	CK45–42CrMo4	42CrMo4 for higher strength and wear resistance.DIN 17200
Surface Treatment	Cr–Ni	Chrome plating for corrosion resistance; nickel for harsh environments.ISO 2081
Weight	10–500 kg	Affects machine balance and transport.
Mounting Type	C–E	Clevis or eye mount for pivoting applications.ISO 6982

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
Houses the piston and hydraulic fluid, contains pressure.

Material: High-strength alloy steel
Piston
Separates the cylinder into two chambers, transfers fluid pressure into linear force.

Material: Steel with wear-resistant coating
Piston Rod Part
Extends from the cylinder to connect to the boom linkage, transmits force.

Material: Chromium-plated hardened steel
Rod Gland / Seal Gland Part
Seals the rod exit point, contains rod seals and wipers to prevent leakage.

Material: Steel
Hydraulic Ports Part
Connection points for hydraulic hoses to supply and return fluid.

Material: Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Boom Cylinder.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Hydraulic Arm (Boom and Stick)

View system integration details

Manufacturers of Boom Cylinder

1 company lists this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Jinan Huachen Industrial Co., Ltd.

Shandong, CN

Founded 199836,000 m²

ISO9001 CE

Also makes: Agricultural Machinery, Construction Equipment, Hydraulic Power Unit and 9 more

Listed on the company's own website · profile compiled by CNFX from public sources

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Frequently Asked Questions

What is the function of a boom cylinder?

It provides linear force to extend and retract the boom section of a hydraulic arm, controlling the boom's angle and reach.

What are typical bore and rod diameters?

Bore diameter ranges from 40 to 200 mm, and rod diameter from 20 to 100 mm, but these are reference ranges that must be confirmed for the specific model.

What standards apply to boom cylinders?

Standards such as ISO 6020-2, ISO 3320, ISO 5597, ISO 1629, DIN 2391, DIN 17200, ISO 2081, and ISO 6982 are listed as procurement references. Always verify compliance with the manufacturer.

What materials are commonly used?

Materials on file include high-strength alloy steel, chromium-plated steel rod, and polyurethane seals. Specific grades like ST52, CK45, 42CrMo4 are reference options.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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pressure:	Up to 350 bar (5000 psi)
flow rate:	Up to 300 L/min (80 GPM)
temperature:	-40°C to 120°C
slurry concentration:	Not recommended for slurry applications

Product Specifications

Industry Taxonomies & Aliases

Applied To / Applications

Industrial Ecosystem & Supply Chain Structure

Application Fit & Sizing Matrix

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