Screw clamps comparison 2018

Purchase advice on screw clamp comparison or test 2018

  • With clamps different workpieces can be fixed in order to glue, saw or otherwise edit them.
  • They can be divided into different categories depending on their clamping system. There are screw clamps with thread, lever and lock.
  • Which material is most suitable for the jaws of screw clamps depends entirely on what material consist of the workpieces to be machined. Use find u. a. Wood, iron, steel and plastic.

Screw clamps comparison 2018: screw

Screw clamps are used as tools for clamping workpieceswhich is why they are standard equipment in every wood workshop. In 2015 alone, there were 102,963 companies in the wood trade in Germany, according to a statistic of the Zentralverbandes des Deutschen Handwerks. But even those who work as handyman with wood and other materials can benefit from a good screw clamp.

So you too among the best screw clamps To find your personal screw clamp test winner, we have carried out our comparison of the clamp clamp 2018, in which we give you the most important information about clamp clamps. In our purchase advice, we clarify you on the scope and operation of this tool on, inform you about the different categories and tell you what you should pay particular attention to the purchase of screw clamps.

1. Scope and operation of screw clamps

Synonyms of the screw clamp

A screw clamp has many names: Sometimes it is also referred to as a spring clamp, clamp, glue clamp, servants, quick release clamp, clamping device or Schraubknecht.

Screw clamps are hand tools whose main task is to put different materials under tension and hold. They are mainly used in joinery, for example, to connect as a glue clamp wooden beams together or pinch workpieces that need to be cut to size.

A classic threaded clamp with thread is simple: It consists of a rail, on each of which a fixed and a movable clamping arm (jaws) are mounted. Both jaws are equipped on the inside with so-called pressure plates, between which the workpieces to be machined are clamped. The lower pressure plate can be moved upwards or downwards via a threaded spindle, which passes through the lower clamping jaw and ends in a handle.

Screw clamps comparison 2018: clamps

Classic construction of a threaded clamp with thread.

This allows a workpiece clamped and relaxed after work and removed from the jig. Regardless of the screw clamp manufacturer and the respective type The process of clamping is usually very similar: The material to be machined is first roughly clamped in the screw clamp before pressure can be built up and the workpiece can be fixed by turning the handle (with screw clamps with thread) or by pressing a lever (screw clamp with lever). In the fixation process, the lower jaw tilts slightly, which leads to jamming on the rail. Slipping of the workpiece or the lower clamping arm is no longer possible in this way.

Tip: In contrast, screw clamps with locking work without such a tilting principle. They use the possibility of automatically locking in different stages and thus locking on the rail.

2. Screw clamp types at a glance

If you are dealing with a screw clamp test, you will notice that clamp clamps can be divided into different types. We have already touched on this topic in the first chapter of our screw clamp comparison. In order to provide you with more detailed information, we present you in the following table all three types of constraints mentioned earlier:

Clamp with thread

Screw clamps comparison 2018: screw

  • Screw clamps with thread are considered the classic clamp clamps.
  • The lower clamping arm can be moved over the rail, but wedged as soon as the lower pressure plate is screwed against the material.
  • Thanks to the screw function, very high pressure can be built up.
  • By using a thread, the objects can be precisely fixed.

precise work
much power

Clamp with lock

Screw clamps comparison 2018: screw

  • Thanks to the snap-in function, a screw clamp with lock can also be operated with one hand, which is why it is also called a one-hand clamp.
  • As a rule, there are many different detent levels - the more, the better the precision, although single-handed clamps are not considered very precise.
  • The force build-up of clamps with locking is significantly lower than with conventional screw clamps.

precise work
Operation with only one hand

Force with lever

Screw clamps comparison 2018: clamps

  • Clamp clamps with levers, as well as those with lock and thread run on a rail.
  • They wedge when the lower pressure plate is pressed against the material. This is done by flipping a lever.
  • In contrast to the classic screw clamp, only relatively little pressure can be built up by lever clamps (nevertheless more powerful than locking clamps).
  • Because of the lower power, it is well suited as a glue clamp for wood (sometimes incorrectly referred to as "wooden screw clamps").

fast fixation
Operation with only one hand

In addition to these three types, there is still the bound to a workbench vise. This tool, also referred to as a clamping block, is not particularly mobile, but can develop a great deal of power and, for example, can also compress solid metal objects.

What advantages and disadvantages a classic screw clamp has over clamped clamps, we have summarized in the following overview for you:

  • Can work with higher pressure thanks to threads
  • has a higher precision during clamping
  • usually more robust
  • can not be used with one hand
  • Fixation takes longer

3. Purchase criteria for screw clamps: You must pay attention to this!

If you want to buy a screw clamp and inform yourself in advance in a clamp test or comparison should pay attention to important purchase criteria, such as. Span, material quality, power and precision.

3.1. Type and function

Screw clamps comparison 2018: screw

Some screw clamps also have a spreading function.

First, think about which type is suitable for you and whether your screw clamp should have additional functions. For some models, there is also a spreading function, in which one or both jaws can be turned over, for example, to glue two wooden strips with a wooden drawer in parallel, as in the picture to the right.

Otherwise, the choice of the best screw clamp depends on the type of work and your working habits: Who relies on speed in connection with, for example, parquet laying while gluing, for which are especially the fast-fixing locking clamps. Even one-handed work, in which it is less important to precision, but the safety (including holding on a ladder) in the foreground can be ideally done with one-hand clamps.

By the way: For those who, on the other hand, can do without both hands to fix them, classic clamp clamps or those with levers are especially worthwhile. They work a bit slower, but are very precise and, above all, more powerful than locking clamps.

3.2. Power and precision

Screw clamps comparison 2018: clamps

Also cheap threaded clamps with thread from a clamp set can exert great pressure on the workpiece to be machined.

Power and precision are particularly important criteria when selecting a good screw clamp or a good screw clamp set, which are not only dependent on the brand and manufacturer, but above all on the respective Klemmzwingen-type and their processing.

If you are looking for a clamp with a lot of resilience, the only thing that really pays off is the handle to the threaded clamp: Thanks to the screwing device can generate enormous forces with her, which can be achieved with neither lever nor locking function. In conversation with an employee of the company Würth confirmed us:

"It is true that the screw clamps have the highest clamping forces. In the case of screw clamps, trapezoidal threads are predominantly used, since this type of thread can transmit the highest forces and very little wear occurs on the spindles. Furthermore, the screw clamp enables a very metered clamping, while quick-release or arresting clamps can only be fully tightened and completely released. "

Adolf Würth GmbH & Co. KG

Screw clamps comparison 2018: 2018

Such tools are so-called glue clips. They are used for particularly small and thin materials.

But precision can also play an important role, especially with sensitive materials such as wood. Finally, no ugly imprints should remain on the workpiece that could render it unusable for further processing.

When it comes to precision, the quality of workmanship is particularly important:If inferior materials have been processed, precise and even pressure is not always possible. In addition, there is a risk that the lower clamping jaw slips and thus relieves the pressure on the workpiece in the middle of the work process.

Tip: In general, Leimzwingen with lever or thread in the precision in the advantage, as they can be adjusted continuously and after feeling. Locking clamps, on the other hand, can only be locked in place using the preset levels.

3.3. used material

Did you know?

Printing and malleable cast iron are not materials but special manufacturing processes.

  • When die casting For example, materials such as aluminum, zinc or magnesium are pressed under high pressure into a mold (leading to high stability).
  • When malleable An iron-carbon compound is reheated after casting to generate higher strength.

While The rail of most glue clamps made of stainless steel is, there are significant differences in the clamping arms. Depending on the manufacturer and model, the choice of material varies from steel to wood and plastic coating to iron, pressure or malleable cast iron.
Depending on what you plan to do with your vise, choosing the right material is very important.

When machining metal workpieces, you should only use metal clamping jaws. These are extremely stable and usually do not warp even under high loads. While steel, pressure and malleable cast iron have the advantage of being both robust and rust-free, pure iron clamping arms run the risk of rusting at high humidity. Although iron is also quite stable, there is a risk that the jaws will not tilt reasonably with inferior processed products.

If, on the other hand, you mainly want to glue wood or fix it for another reason, you are well advised to use jaws made of plastic or wood. They give something when clamping, so that leaves in the object to be processed no marks or bruises. The disadvantage is that clamping arms made of wood or plastic are less durable and warped over time. Therefore, the use of metal printing plates with plastic attachments can be an advantage.

3.4. Size and span

Screw clamps comparison 2018: screw

To glue furniture, you usually need screw clamps with a length between 800 and 2,000 millimeters.

The span of a clamp clamp depends on the length of its rail. If your screw clamp is small, it only reaches a length of max. 200 millimeters. This makes it particularly suitable for small gluing work and for clamping smaller workpieces which must not exceed an edge width of 200 millimeters.

In addition, there is medium-sized screw clamps that move between 200 and 800 millimeters. These are versatile and, for example, well suited for correspondingly large pieces of furniture. As a premier class can but also large screw clamps with a length of 800 to 2,000 millimeters be acquired. With them even cabinets and similarly large objects can be glued. However, these clamps are very heavy, bulky and due to their long rail much less precise than smaller models.

Here again the orders of magnitude in the overview:

  • small screw clamp (up to 200 mm)
  • medium size screw clamp (200 to 800 mm)
  • large screw clamp (800 to 2,000 millimeters)

Screw clamps comparison 2018: 2018

4. Questions and answers about screw clamps

4.1. What do screw clamps cost?

Repairs compact

Those who spend their spare time using screw clamps and tinkering with different tools from their toolbox at home or even repairing doors and windows, could be interested in the book "Reparaturen kompakt - Türen und Fenster" issued by Stiftung Warentest. Experienced DIY enthusiasts will receive not only important tips on the legal situation and the necessary tools, but also proven step-by-step instructions for door and window repairs.

Screw clamps are cheap tools that move in a relatively narrow price range. In the Bauhaus or at Obi, for example, you can obtain screw clamps of up to 200 millimeters in length already for a price of about three euros. Longer copies can also cost between 12 and 20 euros. Very high quality Bessey ferrules, z. For example, from all-steel (made entirely of steel), you can purchase for around 30 euros.

4.2. How should I keep screw clamps?

Always keep clamp clamps in a relaxed state. This prevents wear and ensures that the jaws do not warp. If you have opted for a screw clamp set with several clamps or already have different screw clamps, beyond the Purchase of a clamp clamp or a screw clamp carriage be interesting for you. On a suitable bracket, you can sort your glue clamps by size. In addition, the tools are always close at hand.

4.3. Which famous brands and manufacturers are there?

Certainly, Bessey screw clamps are among the highest quality products available on the market. But other manufacturers such as Wolfcraft are known for quality goods and therefore in many craftsmen very much in demand. An overview of some well-known brands and manufacturers of glue clamps can be found here:

  • Berlan
  • Bessey
  • Connex
  • thin man
  • Festool
  • Gross stable
  • Irvin
  • kwb
  • LeTigre
  • lux
  • Mannesmann
  • Silverline
  • Stanley
  • Suki
  • rota
  • Wolfcraft
  • Würth

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