HP power; KW

The capacities listed in the industrial gearbox and coil gearbox are the input power of the gearbox and the output power is calculated as follows:

Output Power Formula
M2 output torque

The M2 values ​​specified in the industrial gearbox catalog are also true because the gearbox efficiency is taken into account. These values ​​must be equal to or greater than the torque required to operate the machine.
Working coefficient s.f.

Since gearboxes often operate under variable load, it is best to choose a gearbox that has a good coefficient. (Labor factor). This coefficient allows us to select gearboxes with the appropriate specifications for the type of work required. For more information on gearbox performance, see the NMRV gearbox article in the news section of the site.
Conversion ratio i

This ratio is a gearbox technical specification and is determined by the following formula:

Formula conversion ratio

In spiral and coil gearboxes, the ratios shown are usually rounded. Contact the industry experts for accurate quantities of output rounds and conversion ratios.
Gearbox efficiency

The gearbox efficiency is calculated from the following formula:

Gearbox interval formula
Gearbox efficiency

The gearbox efficiency is calculated from the following formula:

Temperature, lubricant material type, speed, gearbox characteristics, etc. affect efficiency, so in calculating the torque of M2, efficiency is used.

In general, choosing the right gearbox requires the following information:

The type of car for which the gearbox is selected
environment temperature

Environmental conditions (dust, humidity, frozen, tropical, etc.)

Electromotor (Type and Specification)

Type of transmission between engine and gearbox (direct, through coupling, clutch, variator)

Axle arrangement (Cochlear gearbox or NMRV gearbox can be used)

The amount of radial or propeller load and its causes

Once you have the information needed to select a gearbox, you can select the industrial gearbox from the Industrial Gearbox catalogs available in the Industrial Catalog Bank Catalog. In this table, KW1; HP1; M2 based on 1 = s.f. Are calculated . If the torque M or the required KW (or HP) power is known, the gearbox can be selected for the following value.

Part II

That’s gearbox efficiency.
Read more: Information needed for industrial gearbox selection (Part I)

Generally, motors with higher power should be avoided because they create shocks and stresses that shorten the life of the industrial gearbox and other components, because the design is based on the amount of power the car absorbs, not on the basis of Engine power installed. Also, if the engine is selected with more power than needed, more energy is consumed, and therefore more expensive, and more expensive electrical equipment consumed. You can also use a larger engine to make sure the system Used only for special working conditions (for example, when the number of connections is high).

Industrial gearboxes can withstand up to 5% of their rated torque provided the number of connections is limited. If the number of joints is also large, a gearbox with a torque of M equal to or more than 2 times the multiplier of the appropriate operating coefficient must be selected.