Gear  is the main item in gears. It looks like the disk, covered all over the circumference of the teeth. When you rotate, they mesh with teeth of another of the wheels, providing movement.  There are two varieties of Gear (a generalized name for gears): leading small and large led.  you can Often find just the reduction of more – the wheel. To determine this detail is easy – it is bound to have six or more teeth. They are used usually in pairs and have a different number of teeth, this scheme and converts a torque (external force which is applied to them) and transmits rotation between the shafts.  Gear ratio shows the ratio of revolutions per minute, calculate it from the ratio of the gear, and the ratio of numbers of teeth.

Where used gear?

Such items are used in almost all existing mechanisms, providing the possibility of mechanical movement.

• In vehicles, their structure and inside of the machines themselves (e.g. inside the gearbox);
• Shipbuilding
• Agricultural machinery;
• For construction equipment (crane);
• In the industrial sector: mining and food industry;
• Construction of the railway wagons;
• In military technology (e.g., tank);
• Pumps – hydraulic;
• In the mechanism of the various hoists and lifts;
• In the clockworks.

Since the invention of the gear wheel, use it  water clock of the Romans, this principle became the basis for creating a rotational motion in all mechanisms to extort. Special attention to such detail was paid to even the famous inventor of innovative machines – Leonardo da Vinci.

Today, they are used widely and have several varieties and proven at the proper level manufacturers.&the latest Catalog can be found here: http://moskva.all.biz/ picked up by manufacturer and class.

In a derived sector such parts are well proven CIS countries and the European Union.  a Lot of companies provides dealer services in this sector, such as “power generation ” of Kharkov.

Now the market is filled with different types of wheels, cutting-edge technology to create a wheel with transverse, longitudinal and circular line of the tooth, with internal gearing, sectoral, conical, with rack and pinion transmission. Fabrication techniques in the last decades used generating with the use of a comb, gear cutter shaping cutter, use both cold and hot rolling. Such manufacturing systems operate to increase the strength and durability of metal, the way with this metal manufactures motor parts Toyota cars.

When choosing gears is to pay attention to their strength and the noise range. It is important to pick the correct hardness for the respective mechanism, guided by advice on the operation of each individual mechanism.