Comparison Zubr ZSL-90 vs Jet JSS-16

The minimum stroke frequency of the jigsaw blade during operation. In some cases (for example, when working on metal), a low stroke rate is preferable to a high one; accordingly, the lower the minimum frequency, the more opportunities you will have to set up the instrument for working on a particular material.

The maximum stroke frequency of the jigsaw blade during operation. The higher the stroke rate, the higher the performance of the tool and the cleaner and more accurate the cut, usually. On the other hand, high speed is not optimal for all materials; picking up a "high-speed" jigsaw is worth it if it is planned to be used mainly for woodworking.

Also note that the characteristics of the tool usually indicate the maximum frequency at idle; at work, it is usually less. However, this parameter quite allows you to compare different tools with each other.

The length of the stroke of the working blade of the jigsaw during operation. The longer the stroke, the more of the file will be in contact with the material in one movement; accordingly, at the same frequency of movement of the blade, a jigsaw with a longer stroke length will be more performant.

The size of the sole of the jigsaw is a plane that, during operation, is closely pressed against the workpiece and ensures its correct position relative to the saw blade. This parameter is important primarily for stationary models (see "Type"). On the one hand, a large sole makes it easier to work with large sheets of sawn material (especially if the thickness of such a sheet is small and it tends to bend); on the other hand, this indicator significantly affects the weight and dimensions of the unit. However, some manufacturers indicate the size of the sole for a portable tool.

— Soft start. With a normal start, the jigsaw motor reaches operating speed very quickly. A sharp jerk of the tool at the same time can ruin the work and increases the risk of letting the jigsaw out of your hands, which is fraught with various unpleasant consequences. In addition, high starting currents, characteristic of modern electric motors, increase their wear and tear, and are undesirable for the power grid. The soft start system avoids the troubles described above: the speed increases smoothly, the jerk of the tool is minimal, and the starting currents are low. This feature is especially important for high power jigsaws (from 600 W).

— Adjustment of turns. This function allows you to select the optimal stroke rate for different types of materials: for example, soft materials such as wood can be worked at high speeds, while hard materials (metal, ceramics, etc.) are recommended to be worked at low speed. See "Min. frequency" and "Maximum frequency".

— Presetting the number of revolutions. The function provides the fastest speed presetting. The stroke rate of the cutting tool is selected for optimal work with workpieces made of certain materials.

— Maintaining momentum. An electronic system that regulates the power supplied to the working tool so that the speed of its work is constant regardless of the load. This improves the quality and pro...ductivity of work, as well as the service life of the tool and the jigsaw itself.

— Brushless motor. The presence of a brushless electric motor in the jigsaw. The carbon brushes used in traditional electric motors run with a lot of friction, get very hot, tend to spark, and wear out relatively quickly. Accordingly, brushless motors are safer, more economical and more durable. Their main disadvantage is their high cost.

— Keyless file replacement. The ability to replace the jigsaw blade without the use of special tools (wrenches, screwdrivers, etc.) — thanks to a special mount that can be opened and closed by hand. This feature greatly simplifies and facilitates the process of changing the blade.

— Anti-vibration system. A mechanism or system of mechanisms designed to reduce the vibration of a tool during operation. Strong vibrations not only worsen the quality and accuracy of cuts, but also increase tool wear, lead to rapid fatigue of the operator, and during prolonged work, they also adversely affect health. To prevent all this, various designs are used in the form of shock absorbers, counterweights, etc.

— Sawdust blowing system. The possibility of blowing sawdust from the place of cutting directly during the operation of the jigsaw. It is usually implemented by a fan that provides cooling for the electric motor: the air flow is directed to the web, and the resulting waste is immediately blown away. Thus, the sawdust does not cover the marking line, which greatly facilitates the work, especially with complex figured cuts.

— Connecting a vacuum cleaner. Possibility of connecting an external vacuum cleaner to the jigsaw; for this, the tool is equipped with a special nozzle. The role of such a vacuum cleaner is similar to the blowing system (see above): it is primarily designed to clean the cutting line from sawdust and other debris. However, at the same time, the vacuum cleaner also additionally ensures cleanliness: sawdust does not scatter around the room, but is collected in a dust collector. At the same time, there is a drawback: the tool becomes more cumbersome and less suitable for complex jobs.

— Built-in lighting. The jigsaw has its own lighting system in the form of a flashlight aimed at the work area. Such a tool allows you to work in low light conditions without any additional light sources.

— Laser marker. The presence of a laser marker-target designator in an electric jigsaw: such a marker projects a light mark onto the workpiece during operation, which indicates where the cut will go. This greatly improves the accuracy of the work.