how does a lemon juicer work to get juice out of lemons
how does a lemon juicer work to get juice out of lemons

Have you ever wondered how a lemon juicer effortlessly extracts the tangy juice from lemons? Well, wonder no more! In this fascinating article, we will explore the inner workings of a lemon juicer and demystify its magic. Prepare to be amazed as we unveil the secrets behind this ingenious invention and discover how it transforms ordinary lemons into a refreshing burst of citrus goodness. Get ready to embark on a journey of citrusy enlightenment as we unveil the mysteries of the lemon juicer!

Mechanism of a Lemon Juicer

Lever System

The first and most crucial component of a lemon juicer is the lever system. The lever allows us to exert force on the lemon, effectively squeezing out the juice. This simple yet ingenious design makes it easier for us to extract the juice from the lemon without putting too much strain on our hands.

Squeezing Action

Once the lever is in place, the squeezing action is what actually extracts the juice from the lemon. With a manual lemon juicer, we use our hands to apply pressure on the lever, which in turn pushes against the lemon. On the other hand, an electric lemon juicer utilizes a motor to apply pressure to the lever, squeezing the lemon and extracting the juice.

Filtering Mechanism

After the lemon has been squeezed and the juice has been extracted, the filtering mechanism comes into play. This step is important to separate the pulp from the juice, ensuring a smooth and pulp-free beverage. The filtering mechanism typically involves a strainer or sieve that catches the pulp while allowing the juice to flow through. The collected juice then moves to a separate chamber, ready to be enjoyed.

Types of Lemon Juicers

Manual Lemon Juicers

Manual lemon juicers are the classic, handheld devices that require physical effort to operate. These types of juicers are perfect for those who prefer a more hands-on approach and enjoy the satisfaction of manually squeezing lemons to extract every last drop of juice.

Electric Lemon Juicers

If you’re looking for a more convenient and effortless way to juice lemons, electric lemon juicers are the way to go. With the push of a button, these juicers do all the hard work for you, ensuring a quick and efficient juicing process. Electric juicers are ideal for those who juice lemons frequently or need to juice large quantities at once.

Manual Lemon Juicers

Lemon Squeezer

The lemon squeezer is a classic and straightforward manual juicer. It consists of two bowl-shaped handles that are joined together. To use the lemon squeezer, we simply cut the lemon in half, place it between the handles, and squeeze them together. The lemon squeezer exerts pressure on the lemon, effectively extracting the juice and leaving behind the pulp.

Citrus Press

Similar to the lemon squeezer, the citrus press is another popular manual juicer. It features a lever that requires us to press it down to squeeze the lemon. The lever amplifies our force, making it easier to extract the juice with minimal effort. Citrus presses often come with different-sized cones to accommodate lemons, limes, and other citrus fruits.


The reamer is a manual lemon juicer that relies on a twisting motion to extract the juice. It consists of a pointed end with ridges (commonly seen in wooden reamers) or a cone-shaped attachment with sharp edges (often found in metal or plastic reamers). To use the reamer, we simply insert it into the lemon, twist and turn, and the juice flows out through the holes or grooves, leaving the seeds and pulp behind.

Electric Lemon Juicers

Rotating Reamer

Electric lemon juicers with a rotating reamer utilize a motorized reamer that spins or rotates to extract the juice. As we place the halved lemons on the reamer, the rotation of the reamer applies pressure to the lemon, effectively squeezing out the juice. This type of electric juicer is perfect for those who want a hands-off approach to juicing and desire a faster extraction process.

Centrifugal Juicer

Centrifugal juicers are powerful electric juicers that work by shredding the fruit and separating the juice from the pulp through centrifugal force. To juice a lemon with a centrifugal juicer, we simply place the halved fruit in the feed chute, and the juicer’s blades quickly spin, breaking down the lemon and extracting the juice. The juice then passes through a strainer, separating it from the pulp and sending it into a collection chamber.

Masticating Juicer

Masticating juicers, also known as cold-press or slow juicers, work by slowly grinding and crushing the fruit to extract the juice. These juicers use an auger that rotates and presses the fruit against a screen or filter, separating the juice from the pulp. Masticating juicers operate at a lower speed compared to centrifugal juicers, resulting in less heat and oxidation, thereby preserving more nutrients and providing a purer juice.

Lever System

Principle of Leverage

The lever system in a lemon juicer follows the principle of leverage, which allows us to multiply the force we exert on the lemon. The longer handle of the juicer acts as the lever, while the lemon serves as the fulcrum. By placing the lemon between the lever and exerting force on the handle, we can exert a greater force on the lemon, resulting in efficient juice extraction.

Pressing the Handle

To operate a lever-based lemon juicer, we need to press down on the handle or lever. As we apply downward force on the handle, it moves towards the lemon, compressing it and extracting the juice. The handle acts as the source of pressure, magnifying our effort and allowing us to squeeze the lemon effectively.

Exerting Force on the Lemon

The force exerted on the lemon is crucial for juice extraction. When we press or squeeze the lever, the force is transferred from the handle to the lemon. As the lemon compresses, the pressure builds up, causing the juice to flow out. By exerting adequate force on the lemon, we ensure maximum juice extraction, leaving minimal juice behind.

Squeezing Action

Manual Pressure

With manual lemon juicers, the squeezing action heavily relies on our physical pressure applied to the lever or handle. By utilizing our hand strength, we can apply sufficient force to extract the juice from the lemon. Manual pressure allows for more control and customization, enabling us to adjust the intensity of the squeeze to our liking.

Electric Pressure

Electric lemon juicers employ a motor to apply pressure on the lever or handle, replacing the need for manual force. The motor drives the mechanism that squeezes the lemon, ensuring a consistent and efficient extraction process. By applying consistent pressure, electric lemon juicers can extract juice quickly and effortlessly, saving us time and effort.

Converting Lemons to Pulp

In the squeezing action, lemons go through a transformation process from solid fruit to pulp. As we squeeze the lemon, the juice is released from the fruit’s cells and flows out through the sieve or strainer. The remaining pulp is left behind, devoid of juice. The squeezing action is critical to converting the lemons from their original state into a liquid form that is easily pourable and consumable.

Filtering Mechanism

Strainer or Sieve

The filtering mechanism of a lemon juicer typically involves a strainer or sieve. This component ensures that the pulp and any unwanted particles are separated from the juice. As the juice flows out through small holes or meshes in the strainer or sieve, the pulp is caught, preventing it from entering the collection chamber and providing us with a smooth and pulp-free juice.

Separating Pulp from Juice

The main purpose of the filtering mechanism is to separate the pulp from the juice. By effectively trapping the pulp in the strainer or sieve, we can ensure that the liquid juice remains pure and free of any lumps or solids. The separation of pulp from juice is essential for those who prefer a smooth and pulp-free lemon juice experience.

Collection Chamber

Once the juice has passed through the filtering mechanism, it collects in a dedicated chamber or container. This chamber is designed to hold the extracted juice, allowing us to easily pour it into a glass or container for consumption. The collection chamber is often detachable for convenient cleaning and pouring purposes, ensuring a hassle-free juicing experience.

Lemon Squeezer

Design and Construction

A lemon squeezer typically consists of two bowl-shaped handles joined together at a hinge. The handles have ridges or grooves on the inner surfaces to provide better grip and stability while squeezing. The squeezer is usually made of sturdy materials like stainless steel or aluminum, ensuring durability and longevity.

Cutting the Lemon

To use a lemon squeezer, we start by cutting the lemon in half. This allows us to easily fit the halved lemon into the squeezer and extract the maximum amount of juice. By cutting the lemon, we ensure that the juice is accessible and can flow out smoothly when pressure is applied.

Squeezing the Halves

Once the lemon is halved, we place one half between the handles of the squeezer, positioning it cut side down. By bringing the handles together and applying pressure, we squeeze the lemon, causing the juice to flow out. The ridges or grooves on the inner surfaces of the handles help to grip the lemon securely, ensuring maximum efficiency in juice extraction.

Citrus Press

Leveraged Pressing

A citrus press features a lever mechanism that makes juice extraction easier and more efficient. The lever is attached to the pressing cone, which is designed to fit the size of the lemon or citrus fruit. As we press the lever down, it applies pressure to the fruit, effectively squeezing out the juice. The leveraged pressing action significantly reduces the effort required while maximizing juice extraction.

Extraction of Juice

By using a citrus press, we can extract the juice from lemons and other citrus fruits with minimal effort. The pressing cone applies force to the fruit, causing the juice to flow out through small holes or channels on the cone. The juice is then channeled down into the collection chamber, ready to be enjoyed.

Efficient Pulp Separation

One of the advantages of using a citrus press is its efficient separation of pulp from juice. The pressing cone is designed to catch and trap the larger particles and pulp, preventing them from mixing with the juice. This separation ensures a smoother and less pulpy juice, giving us a more enjoyable and refreshing drinking experience.

Masticating Juicer

Slow and Steady Process

Masticating juicers operate at a slower speed compared to other types of juicers. This slower process allows the juicer to extract juice more thoroughly, as it thoroughly grinds and crushes the fruit. The slow and steady action ensures that every drop of juice is extracted, resulting in a higher yield and a more nutrient-dense beverage.

Grinding and Crushing Action

To extract juice using a masticating juicer, we feed the halved lemon into the juicer’s feed chute. The lemon then encounters an auger, a spiral-shaped component that rotates slowly. As the lemon makes contact with the auger, it is gently crushed and ground, breaking down the fruit’s cells and releasing the juice. The ground pulp is then separated from the juice, leaving only the pure liquid behind.

Delivering Pure Juice

The aim of a masticating juicer is to deliver pure juice, free from excess pulp or solids. Through the grinding and crushing action, the masticating juicer ensures that the juice extracted is as smooth and pure as possible. The slower speed of operation minimizes oxidation and heat, helping to preserve the freshness and nutritional value of the juice. With a masticating juicer, we can enjoy a cleaner and more vibrant glass of lemon juice.

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Micheal Franco
I'm Michael Franco, an author, and writer focused on helping people make informed decisions regarding juicers. I have over 10 years of experience writing about juicers and the juicing industry, and I'm passionate about helping people find the right juicer. I'm constantly researching and reviewing the latest juicers to provide readers with the most up-to-date information. My reviews are balanced, fair, and thorough, and I strive to provide readers with an understanding of the pros and cons of each juicer. I'm proud to be a part of the team and to help people make smart decisions when purchasing a juicer.