Linear Solenoids

Linear solenoids are electromechanical devices that generate a uniform magnetic field when an electric current is applied to them. They are composed of a coil of wire wrapped around a moveable metal core.

When electricity passes through the wire, a magnetic field is created which moves the mobile metal slug along the length of the solenoid's core, exerting a simple pushing or pulling force, as opposed to a rotational force found in rotary solenoids.

Linear solenoid actuators offer exceptional precision, reliability, and come in versatile voltage options, including 12V and 24V configurations, designed to suit various industrial and control systems. Engineered for long-term, reliable, and durable performance, they excel in heavy-duty and high-cycle applications.

Linear solenoids are critical components in automation, valve control, and other demanding applications requiring precise push or pull forces.

Types of Linear Solenoids & Actuators

Linear solenoids and actuators come in various designs, each tailored for specific applications.

Electric Solenoid

Electric solenoid actuators are the most common type, converting electrical energy directly into linear mechanical motion. These are ideal for applications requiring automated, electrically controlled linear actuation in systems like locking mechanisms, circuit breakers, and industrial machinery.

Mechanical Solenoid

Although "solenoid" typically refers to an electrically actuated device, the term "mechanical solenoid" is sometimes used to describe the mechanical components or output of a solenoid-driven system.

It generally refers to actuators that produce linear motion through mechanical means, often triggered by an external signal—usually electrical.

These mechanisms are commonly integrated into systems like interlocks, latches, or lever assemblies where a solenoid’s movement initiates a mechanical action.

Push-Pull Solenoid

Push-pull solenoid actuators are versatile linear solenoids designed to provide force in both extension and retraction. Their key function is to offer bidirectional linear movement.

They are ideal for applications requiring precise back-and-forth motion, such as in automated dispensing systems, medical devices, and can even include waterproof versions for demanding environments.

Heavy-Duty Solenoid Actuators

Heavy-duty solenoid actuators are linear solenoids engineered to withstand demanding industrial environments and deliver substantial force over extended periods.

Their primary function is to perform high-force push or pull tasks reliably and repeatedly. These solenoids come in voltages ranging from 12V to 230V, accommodating both DC and AC power sources to suit various application needs.

These are ideal for applications in heavy machinery, industrial brakes, large valve control, and any system requiring durable, high-cycle linear actuation.

Linear Solenoid Valves

Linear solenoid valves are electromechanically operated valves that use a linear solenoid to control the flow of fluids. The solenoid's push or pull motion acts as a plunger to open or close the valve.

These solenoid actuators are ideal for applications requiring precise and rapid control over fluid or gas flow in systems like pneumatic and hydraulic circuits, irrigation systems, and process control in manufacturing.

Key Factors to Consider When Choosing Linear Solenoids

Selecting the appropriate linear solenoid is vital for optimising performance and ensuring the reliability of your system:

• Force & stroke length requirements: Accurately determine the precise force needed and the exact distance the solenoid's core must travel. These fundamental requirements will dictate the solenoid's size and power capabilities.
• Voltage and current ratings: Ensure the solenoid actuator’s voltage (e.g., 12V, 24V) and current ratings perfectly match your available power supply. Incorrect ratings can lead to malfunction, damage, or inefficient operation.
• Duty cycle and operating environment: Consider how frequently the solenoid will operate and the conditions it will face. For wet, dusty, or harsh environments, look for models with appropriate ingress protection (IP ratings) or consider waterproof options.
• Mechanical vs. electric solenoid selection: Decide whether your application requires direct electrical actuation or if a broader mechanical actuator, potentially controlled by an indirect signal, is more suitable.
• Application-specific considerations: Evaluate unique needs based on the solenoid's role. For instance, valve control demands rapid response and precise sealing, while general push/pull needs might prioritise raw force or stroke length.

Mistakes to Avoid When Buying Linear Solenoids Actuators

Avoiding these common errors will ensure you select linear solenoids that perform reliably and safely within your application.

• Incorrect voltage or force rating: A frequent mistake is choosing a solenoid with a voltage that doesn't match the power supply or an insufficient force rating. This can lead to underperformance, overheating, or even complete failure of the linear solenoid.
• Ignoring duty cycle specifications: Overlooking a solenoid's duty cycle can result in overheating and premature burnout, especially in continuous or high-cycle applications.
• Overlooking environmental conditions: Failing to consider the operating environment can lead to rapid degradation of the solenoid.
• Not verifying solenoid compatibility: An often-missed pitfall is neglecting to ensure the solenoid's electrical characteristics are compatible with your existing system.

Most Common Applications for Linear Solenoids

Linear solenoids are versatile components, enabling critical functions across various industries.

• Security Systems & Access Control: Linear solenoids are frequently employed in automatic or high-security door-locking mechanisms for electronic door locks and secure turnstiles.
• Mining & Heavy Machinery: Deployed in valve control and safety interlock mechanisms in large mining equipment used in Australia, ensuring operational safety and control in demanding environments.
• Automotive Systems: Linear solenoids are essential in automotive applications such as controlling fuel injectors, actuating automatic transmission valves, operating door locks and latches, and controlling air intake systems. They are also used in car starter motors.

Your Trusted Linear Solenoids Supplier & Manufacturer in Australia

RS Australia is your trusted supplier and distributor of a wide range of high-quality linear solenoids from leading brands such as Mecalectro, Johnson Electric, and RS PRO. Explore our online selection to find the perfect push-pull solenoids, waterproof solenoids, solenoidcoils, and solenoidconnectors.

To place an order, simply browse our products, find and add the desired linear solenoids to your cart, and proceed through our secure checkout for purchasing. We offer various payment options for your convenience across Australia.

For delivery timelines and costs within Australia, please visit our dedicated Delivery Information page for the most updated information.