Technology listing

  
Torque Conversion Chart
  
tPrecautions for Handling Geared Motors
   
Why choose a D.C motor?
   

How to select from the SGMADA range?

   
Definition of the DC motor
   
Motor and gearbox combinations
   
Product technology introduction
   
the torque calculation method for ac induction geared motor
Technical

1.Torque Conversion Chart

unit

gf.cm

kgf.cm

N.m

mN.m

N.cm

lb.in

oz.in

gf.cm

1

0.001

0.000098

0.098

0.0098

0.000868

0.013889

kgf.cm

1000

1

0.098

98

9.8

0.868

13.889

N.m

10200

10.2

1

1000

100

8.85

141.64

mN.m

10.2

0.0102

0.001

1

0.1

0.00885

0.142

N.cm

102

0.102

0.01

10

1

0.0885

1.42

lb.in

1152

1.152

0.113

113

11.3

1

16

oz.in

72

0.072

0.00706

7.06

0.706

0.0625

1

2.Precautions for Handling Geared Motors
Precautions for Handling Geared Motors

Turning by output shaft

Do not turn a geared motor by its output shaft when, for example, arranging its position so as to install it.
The gearhead will become a speed-increasing mechanism, which will have harmful effects, damaging the gears and other internal parts; and the motor will turn into an electrical generator.

Installed position

For the installed position we recommend a horizontal position --the position used in our company's shipping inspection.
With other positions, grease might leak onto the geared motor, the load might change, and the motor's properties might change from those in the horizontal position. Please be careful.

Additional processing

Various kinds of processing are possible for the output shaft.
¡ùHowever, it is necessary to be careful when processing, as the load,an impact, powder from cutting, etc., during processing can damage the product.

Screws

Install the screws after first checking the taps and tap depth against the dimensions entered on the exterior drawing.
¡ùIf, when a geared motor is installed, the screws are too long or their tightening torque is too great, the motor's internal mechanical parts could become deformed or break or the screws could become deformed, resulting in a breakdown. If the tightening torque is too weak, on the other hand, it could cause the motor to rattle or fall off.

Installation of geared motor on output shaft

Please be careful with regard to applying adhesive.
¡ùIt is necessary to be careful that the adhesive does not spread along the shaft and flow into the bearing, etc. Moreover, do not use a silicon adhesive or other volatile adhesive, as it could harmfully affect themotor's interior. In addition, avoid press fitting, as it could deform or damage the motor's internal mechanism.

Handling the motor terminal

Please conduct the welding work in a short time.. (Recommendation: With the soldering iron tip at a temperatureof 340 - 400¡æ, within 2 seconds.)
¡ùApplying more heat than is necessary to the terminal can melt the motor's parts or otherwise harm its internal structure. Moreover, applying excessive force to the terminal area can put stress on themotor's interior and damage it.

Grease

Grease is applied to the sliding areas of the gears, etc.
¡ùBe careful about using the product in a special environment. Due to the structure of geared motors, the grease could ooze out to the exterior.

Temperature range for use

Geared motors should be used at a temperature of -10¡«60¡æ. The figures stated in the catalog specifications are based on use atordinary room temperature (approximately 20¡«25¡æ.
¡ùIf a geared motor is used outside the prescribed temperature range,the grease on the gearhead area will become unable to functionnormally and the motor will become unable to start. Depending on the temperature conditions, it may be possible to deal with them by changing the grease or the motor's parts. Please feel free to consult with us about this.

emperature range for storage

Geared motors should be stored at a temperature of -15¡«65¡æ.
¡ùIn case of storage outside this range, the grease on the gearhead area will become unable to function normally and the motor will becomeunable to start.

Relative humidity range

Geared motors should be used in 20 - 85% relative humidity (no dew condensation).
¡ùIn a humid environment, the metal parts might rust, causing abnormalities.
Therefore, please be careful about use in such an environment.

Long-term storage

Do not store a geared motor in an environment where there are materials that can generate corrosive gas, toxic gas, etc., or where the temperature is excessively high or low or there is much humidity. Please be especially careful with regard to storage for lengthy periods such as 2 years or more.

Longevity

The longevity of geared motors is greatly affected by the load conditions, the mode of operation, the environment of use, etc. Therefore, it is necessary to check the conditions under which the product will actually be used. The following conditions will have a negative effect on longevity.
Please consult with us should any of them apply.
¡öUse with a load that exceeds the rated torque   ¡öFrequent starting
¡öMomentary reversals of turning direction            ¡öImpact loads
¡öLong-term continuous operation    ¡öForced turning using the output shaft  
¡öUse in which the permitted overhang load or the permitted thrust load is exceeded .
¡öA pulse drive, e.g., a short break, counter electromotive force, PWM Control
¡öUse of a voltage that is nonstandard as regards the rated voltage
¡öUse outside the prescribed temperature or relative-humidity range, or in a special environment
¡öPlease consult with us about these or any other conditions of use that may apply, so that we can be sure that you select the most appropriate model.

3.Why choose a D.C motor?
        Many applications call for a high start-up torque. The D.C. motor, by it svery nature, has a high torque vs. falling speed characteristic and this enables it to deal with high starting torques and to absorb sudden rises in load easily. The speed of the motor adjusts to the load. Furthermore, the D.C. motor is an ideal way of achieving the miniaturisation designers are constantly seeking because the efficiency it gives is high compared with other designs.

4.How to select from the SGMADA range?
         The motor unit is selected according to the required output power.Depending on the required speed, a direct motor or a geared motor is selcted.
Speeds 1,000 to 5,000 rpm¡¡¡¡¡¡¡¡¡¡¡¡Direct motor
Speeds below 500 rpm ¡¡¡¡¡¡¡¡¡¡¡¡¡¡Geared motor
The gearbox is selected depending on the maximum required torque and the duty cycle.

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