Twin gear juicers what are they all about, pros and cons
Twin gear slow juicers are slowly rotating juicers. Getting your juice from it doesn’t take much longer than, for example, a centrifugal juicer.
- Low heat: Many juicers generate tremendous heat because they rotate too quickly or even use heat to increase yield. But heat destroys nutrients, and several enzymes and vitamins are not heat-stable. The first enzymes are lost at around 42 degrees Celsius. A slow juicer, on the other hand, only slightly heats the pressed product and juice. This serves to protect nutrients and vital substances. This is why twin gear juicers have earned the name: cold juicers.
- Less oxidation: Certain ingredients in the juice ingredients react with oxygen, meaning that oxidation takes place. This destroys nutrients and also affects the taste of the juice. While centrifugal juicers, for example, whirl a particularly large amount of oxygen into the juice, the oxidation is lower with a slowly rotating twin gear juicer.
- Strong squeezing: The press rollers of a slow juicer may turn slowly. But due to the reduced gear, they develop all the more power. The crushed material is pressed against a sieve with great force, which leads to a high juice yield. Compared to simple juicers, the yield is higher. Cold juicers squeeze out the juice particularly gently so that as many vitamins, minerals and enzymes as possible are retained.
There are also some disadvantages that twin gear juicers have over centrifugal juicers:
- Small fees chutes: Since some models have relatively small feed chutes, you have to cut the ingredients smaller and give you more work to do in advance. Due to the small chute, the possibility of operating errors is greater. If you put in too much material to be pressed at once, it is more likely to cause a blockage.
- Slow speed: Overall, juicing with a slow juicer takes longer than with a centrifugal juicer.
What can I juice with a slow juicer?
You can process the following foods into juice with twin gear press juicers:
- Soft and hard fruit such as apples, pears, oranges, mango, papaya, pineapple, melons, plums, grapes or kiwi, as well as all kinds of berries.
- Vegetables like carrots, beetroot, celery, cucumber, tomatoes, peppers or fennel.
- Grasses such as wheatgrass or barley grass.
- Sprouts of mung beans, alfalfa, clover, cress or radish.
- Herbs like parsley, coriander or mint.
- Green vegetables such as spinach, broccoli, lamb’s lettuce, romaine lettuce, kale, purslane, lettuce or chard.
- Wild plants such as dandelions, chickweed, nettles and ground elder.
Twin gear juicers vs regular models
There is a clear difference between twin gear juicers and other types. We will be comparing centrifugal juicers with the slow masticating juicers.
Centrifugal juicer – fast, inexpensive and labor-saving
In this type of juicer, a centrifugal force acts on the ingredients. The container rotates at high speeds of around 15,000 revolutions per minute or more and hurls the fruit and vegetables in a circle. This is at the same time crushed by the friction disc located in it. The resulting juice flows off via a spout or outflow, while the pomace enters a designated container. With their high wattage, centrifuge juicers are able to reliably extract juice from hard ingredients. The often wide filling opening saves the time-consuming chopping of fruit and vegetables. Centrifugal juicers do not do well with high fiber foods like green leaves.
The high rotation speeds ensure that the ingredients are juiced quickly. Therefore, larger quantities can be processed quickly. On the other hand, the numerous revolutions often lead to a high level of heat development. This can cause the juice to lose valuable nutrients such as enzymes and vitamins. Also, oxygen gets into the juice and can have a negative effect on the ingredients, taste and shelf life.
A centrifuge juicer is an option for anyone who wants to save time, without a lot of work. It’s for those who want to prepare fresh juice inexpensively and who can do without fiber-rich ingredients. But it processes less-nutritional juice which have low shelf life.
Slow Juicer – rich in nutrients, versatile and economical
Slow juicers extract the juice by crushing or squeezing the ingredients using slowly-rotating press screws or rollers. The aim is to make a chewing movement when crushing and to create a food pulp that is characterized by gentle and natural processing. Due to the slow rotating movements of a maximum of 200 revolutions per minute, many nutrients are extracted. Since there is no heat development, the nutrients are largely retained. Slow juicers also have an intense aroma of the juice and a high juice yield.
The disadvantage is that the juice preparation in a slow juicer takes more time, as explained earlier. One, this is because the ingredients have to be cut into very small pieces before they can be put into the feed tube. Also, slow juicers – as the name suggests – work slowly. It should also be mentioned that they are usually more expensive compared to centrifuge juicers.
A slow juicer is a good choice for anyone who wants to make fresh juice frequently. It’s for those who values high nutritional content, full aroma and versatile preparations.
Features to consider while buying the best twin gear juicer
If you want to buy a new twin gear juicer, you should consider a few factors beforehand. To make the purchase decision easier, we have compiled the most important criteria in the following section.
There are two types of twin gear juicers: the vertical and horizontal juicers.
Depending on the manufacturer and model, a horizontal slow juicer has one or two press rollers that rotate in a horizontal plane. The ingredient is pressed directly onto the rollers, which shred and compress it. It is then pressed against a sieve plate to extract the juice. Devices with double rollers are very economical because they shred the pressed material finely. And at the same time, they act on the ingredients with extremely high force. This is why even green leafy vegetables and grasses can be juiced so effortlessly.
The downside is that juicing requires a little more force to push the juice ingredients onto the rotating rollers. Depending on the device, cleaning can also be more time-consuming than with a vertical model. A good example of the horizontal juicer is the Super Angel Deluxe.
Vertical slow juicers process the fruits with a knife and press roller. Pieces are separated at the top and slide down the press roller, where they are crushed. This is mostly done automatically, meaning there is hardly any need to press on the juice ingredients. Some devices even pull the ingredients in almost by themselves.
The food to be pressed is pressed against a cylinder sieve. A scraper removes the remaining pomace that is diverted. The juice is usually collected in the device and only drained after all ingredients have been processed.
Since mostly no force is required, the process of juicing is a little more comfortable compared to the horizontal devices. Also, cleaning is usually easier. In return, you have to be a little more patient. You shouldn’t refill the ingredients too quickly, the devices simply need their time to shred.
The good thing about slow juicers is that they don’t consume electricity as other models with powerful motors. The power of the juicers is usually between 150 and 250 watts, but can also go up to 1000 watts. The number of revolutions is more important: the lower, the gentler the processing.
What all slow juicers have in common is their low speed. The exact revolutions vary from model to model. Here the values are between 80 and 200 revolutions per minute for high-quality devices. But it shouldn’t be more than 200 revolutions per minute. If you want a very slow twin gear juicers, choose the Super Angel PREMIUM DELUXE which runs at 82 RPM. Choose the BioChef Gemini (160 RPM) if you want something faster.
The device with the lowest speed is not automatically the best. The decisive factor is how the slow juicer extracts the liquid from the ingredients. It also depends on whether the juicer is horizontal or vertical. It’s more important that no unnecessary heat generation occurs or oxidation is favored. This is primarily how it differentiates from other juicers (e.g. steam juicers or centrifugal juicers).
Choosing a slow juicer based on its speed would be the wrong approach. Other factors are much more important when making purchasing decisions.
Ingredients to juice
The majority of the devices can handle the usual types of fruit and vegetables (e.g. apples, carrots). But as soon as it comes to green leafy vegetables or grasses (e.g. wheatgrass), this changes. Some horizontal slow juicers have the advantage that they are better at extracting the juice from leaves and grasses. So, if you’ll be juicing more of leafy vegetables or grasses, a horizontal device such as the Angel Juicer Pro is the better choice. If mainly fruit is to be juiced, a vertical juicer is usually sufficient.
Frequency of use
Another criterion is the frequency of use. Some people only want to squeeze fresh juices occasionally (e.g. 2-3 times a week), while others want to prepare large quantities everyday. Although all devices are designed for a long service life, the load should not be underestimated. For example, if you want to juice 1-2 kg of carrots a day for your extended family, you should opt for a horizontal juicer. Whether Angel Juicer or Greenstar Pro, these devices can cope better with such intense loads. The vertical devices are also ideal for occasional use and the daily pressing of smaller amounts of juice.
Many people buy a juicer to take advantage of the high nutritional content of freshly squeezed juices.
If the nutritional content is the top priority, you should refrain from purchasing a steam or centrifuge juicer. Manual citrus presses or slow juicers extract juice more gently and with less loss of nutrients. And remember, the slower the device, and the lower the heat generation, the more nutrients it can extract.
As we mentioned earlier, one of the main disadvantages of twin gear juicers is that they block or jam too frequently. For this reason, many manufacturers are equipping these types of models with anti-jam functions. However, not all twin gear devices feature this function. One of the anti-jam features is the automatic reverse function which you can find in the Super Angel Pro and Super Angel Deluxe.
Would you like to save yourself the time-consuming chopping process before preparing the juice? Then you should pay attention to the size of the filling opening when buying your juicer. Most juicers have a diameter of between 4 and 8 centimeters.
The larger the filling chute, the less you will have to refill. A three round task with a small juicer can be reduced to two in a model with a large chute.
There are a few models that have even larger filling openings and can process whole fruit.
When purchasing a juicer, consumers should take a look at the materials it uses. Is it a stainless steel juicer or is it mainly made of plastic? In the latter case, all parts that come into contact with food should be BPA-free. However, many slow juicers are made of high quality and robust plastic. These are for example, the Tribest GSE-5000 and the Green Power KPE1304. Meanwhile, ensure they are free of BPA.
High-priced devices like the Super Angel devices are made entirely of stainless steel. Meanwhile, some models have glass containers to catch the juice.
Dimensions, bowl capacity, and weight
The dimensions shouldn’t be a problem if you have enough space on your kitchen counter. If the reverse is the case, it’s a feature to watch out for.
Concerning the filling quantity, pay attention to both the capacity of the juice container and the volume of the pulp container. The juice containers of different models offer an average capacity of 0.5 to one liter. The pulp containers have a larger capacity of up to 2 liters. The larger this is, the more juice can be pressed without having to empty the container in between.
If you want a lightweight model, we’ll advise you to choose a model made of plastic. Stainless steel juicers like the Super Angel series tend to be heavier.
Safety should not be neglected when purchasing a juicer. Not every model is equipped with safety functions. We recommend anti-slip feet, which guarantee a secure stability. A safety lock ensures that the juicer can only be used if the container has been properly closed. Some models are equipped with overheating protection. This automatically switches off if the electronics inside the juicer get too hot.
The motor and spare parts of slow juicers usually have different periods of warranty. For the spare parts, the guarantee period is often between 2 and 5 years. Meanwhile, the motor is often guaranteed for 5 to 20 years, sometimes even for life.
In addition to the usual basic equipment, juice presses are also equipped differently. These include, for example, a fine and a coarse sieve, a recipe book, juice container with a lid for storage in the refrigerator, cleaning brush, and the like. The more the accessories, the better.