Motor/Cylinder Body: Structural Housing for Actuators

Product Specifications

Technical details and manufacturing context for Motor/cylinder body

Definition

The motor/cylinder body is the primary structural component in actuators, providing a rigid enclosure that houses internal moving parts such as pistons, rods, or rotors. It protects these components from external contaminants and damage, and often facilitates mounting and connection to other system elements. In cylinders, the body typically forms the pressure chamber, while in motors, it supports the stator and rotor assembly. As a static structural component, the body does not move but provides the necessary framework and sealed environment for the actuator's internal mechanisms to operate. It withstands internal pressures in cylinders or contains magnetic fields and supports bearings in motors, transferring operational forces to the mounting points. The body is manufactured from materials such as aluminum alloy, cast iron, or steel, with material selection depending on application requirements like weight, strength, and corrosion resistance. Key parameters for pneumatic cylinders include bore diameter (32–125 mm per ISO 15552), stroke length (25–500 mm per ISO 15552), operating pressure (0.1–1.0 MPa), and operating temperature (-20 to 80°C). Surface roughness (Ra 0.2–0.4 μm per ISO 1302) and cylindricity (0.01–0.02 mm per ISO 1101) are critical for seal life and piston sealing. Weight ranges from 0.5 to 5.0 kg depending on bore and stroke. IP ratings (IP54–IP65 per IEC 60529) indicate protection against dust and water. These values are reference ranges and must be verified for the specific model and application with the legal manufacturer or supplier. Standards listed are procurement references, not proof of certification or compliance.

Working Principle

The motor/cylinder body is a static structural component that does not move but provides the framework and sealed environment for the actuator's internal mechanisms. In cylinders, it forms the pressure chamber, withstanding internal pressures and guiding the piston. In motors, it supports the stator and rotor assembly, contains magnetic fields, and supports bearings. The body transfers operational forces to mounting points, ensuring proper alignment and stability. It protects internal parts from contaminants and damage, and its design must accommodate thermal expansion, pressure cycles, and dynamic loads. The body's material and surface finish directly affect sealing performance and durability.

Common Materials

Aluminum alloy, Cast iron, Steel

Technical Parameters

Parameter	Typical range	Notes & selection driver
Bore Diameter	32–125 mm	Standard pneumatic cylinder bore rangeISO 15552
Stroke Length	25–500 mm	Custom strokes available on requestISO 15552
Operating Pressure	0.1–1.0 MPa	Below 0.1 MPa insufficient forceISO 5208
Operating Temperature	-20–80 °C	Seals degrade above 80°C
Surface Roughness	Ra 0.2–0.4 μm	Critical for seal lifeISO 1302
Cylindricity	0.01–0.02 mm	Affects piston sealingISO 1101
Material	6061-T6	Aluminum alloy for light weightASTM B221
Weight	0.5–5.0 kg	Depends on bore and stroke
IP Rating	IP54–IP65	Higher rating for dusty environmentsIEC 60529

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

End caps Part
Seal the ends of the body and provide mounting points for ports or shafts

Material: Aluminum alloy or steel
Mounting brackets Part
Provide attachment points to secure the actuator to machinery

Material: Steel
Port threads Part
Allow connection of hydraulic/pneumatic lines or electrical conduits

Material: Steel
Body Housing
The barrel or frame itself — the pressure chamber in a cylinder, the stator seat in a motor.

Applied To / Applications

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

Actuator (Motor/Cylinder)

View system integration details

Manufacturers of Motor/cylinder body

Manufacturer profiles associated with Motor/cylinder body.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review · Page last updated 6 September 2026

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Frequently Asked Questions

What is the primary function of a motor/cylinder body?

The motor/cylinder body serves as the main structural housing that contains and protects internal components such as pistons, rods, or rotors. It provides a rigid enclosure, supports the internal mechanisms, and facilitates mounting to other system parts.

Which materials are commonly used for motor/cylinder bodies?

Common materials include aluminum alloy, cast iron, and steel. The choice depends on factors like weight, strength, and corrosion resistance required for the specific application.

What are typical parameters for pneumatic cylinder bodies?

Typical parameters include bore diameter (32–125 mm), stroke length (25–500 mm), operating pressure (0.1–1.0 MPa), and operating temperature (-20 to 80°C). Surface roughness and cylindricity are also specified for sealing performance.

How should I verify the specifications for a specific motor/cylinder body?

Always confirm model-specific values and standards with the legal manufacturer or supplier. The listed parameters are reference ranges and must be validated for your intended application.

Data Basis

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

Preliminary Technical Classification

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pressure:	Up to 300 bar (4350 psi)
flow rate:	Dependent on port size and internal geometry
temperature:	-40°C to +150°C
slurry concentration:	Not recommended for abrasive slurries >5% solids by volume

Motor/cylinder body

Product Specifications

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Application Fit & Sizing Matrix

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