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AC TECH
EACH GEAR HAS ITS OWN CLASS
There are many types of gears that differ in terms of size, quality, employment position. Precision is very important. The more the real profile
of the gear is similar to its theoretical design the quieter it is. The quality of a gear depends upon how meticulously it was designed and built.
In the table below the DIN 3962 precision classes have been listed for the gears with their corresponding uses. This system is universally
recognised throughout the world even if some countries, such as Germany, Japan, USA and England, adopt other parameters.
GEARBOXES FOR MOTOR CARS AND INDUSTRIAL
VEHICLES AND HIGH QUALITY TRACTORS
CLASS 8
PRECISION MEASURING CENTRES
Master of precision for climate controlled rooms
CLASS 3
AEROPLANES
Measuring equipment, aeroplanes, aircraft, precision
machining tools
CLASS 4
MEASURING EQUIPMENT
Aeroplane wheelwork, machining tools, high gears for
gearboxes for motor cars, buses, lorries, measurement
equipment
CLASS 5
SPORT CARS
Transmission groups of sports cars
CLASS 6
ANTIQUE TRACTORS
Agricultural machines in general, machines with low
technological content
CLASS 11 /12
LUXURY CARS
Transmission groups of luxury cars and machining tools
CLASS 7
TRANSFER BOXES
Tractors, secondary wheelwork in mechanical construction,
generic speed reducers
CLASS 9 /10
AC TRACTORS
