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Motor drive Small and special electric machine Precision speed reduction device 

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  • Technical Requirement

  • DC Gear Motor
Detail
  • Deneral Specification Of Motors
Items Specifications
Dielectric withstanding In the circumstance of normal ambient temperature and humidity, the resistance can be up to 20M Q or more when DC 500V megger is applied between the windings and the frame after rated motor operations.
Dielectric withstanding In the circumstance of normal ambient temperature and humidit, there will be no problem to withstand 1.5kV at 50/60hz between the windings and the frame for 1 minute after rated motor operation.
Temperature rise The temperature rise should be lower than 80°C measured by resistance method when the motor is working.
Insulation class Class B (130°C)
Use temperature -10°C ~ + 40°C (Non freezing)
Use humidity ≤85% (Place without dew)

 

COMMON SPECIFICATIONS

  • Permissible Overhung Load And Permissible Thrust Load Of Motor

Permissible Overhung Load

Motor Permissible Overhung Load
Motor Frame Size
口(mm)
Output Shaft Diameter
口(mm)
Distance From Shaft End
10mm 20mm
42 5 40 -
60 6 50 110
70 6 40 60
80 8 90 140
10 110 120
90 10 140 200
12 240 270
100 14 320 350

  • Permissible thrust load.
  • Avoid thrust loads as much as possible. If thrust load is unavoidable, keep it to half or less of the motor mass.

 

Allowable Suspension Load Of Motor • Allowable Axial Load

Model Gear Ratio Maximum Permissible Torque N.m Permissible Overhung Load N Permissible Thrust Load N
10mm 10mm From Shaft End 20mm 20mm From Shaft End
2GN口K 3-18 3.0 50 80 30
25-200 120 180
4GN口K 3-18 8.0 100 150 50
25-200 200 300
5GN口K 3-18 10 250 350 100
25-200 300 450
5GU口KB 5GU口K 3-9 20 400 500 150
12.5-18 450 600
25-200 500 700
6GU口K 3-200 40 1100 1500 300

 

  • J Permissible Load Inertia For Gearhead J

• When a high load inertia (J) is connected to a gearhead, high torque is exerted instantaneously on the gearhead when starting up in frequent, discontinuous operations (or when stopped by an electromagnetic brake, or when stopped instantaneously by a brake pack). Excessive impact loads can cause the gearhead or motor damage.

• The table below gives values for permissible load inertia on the motor shaft. Use the motor and gearhead within these parameters. The permissible inertial load value shown for three-phase motors is the value when reversing after a stop.

• The permissible load inertia (J) on the gearhead output shaft is calculated with the following equation.

• The life of the gearhead when operating at the permissible inertial load with instantaneous stops of the motors with electromagnetic brakes, brake packs or speed control motors is at least 2 million cycles.

 

  • Permissible Load Inertia For Gear Head Output Shaft
Gear ratio 1/3~1/50 JG=JMxl
Gear ratio 1/60 or high JG=JMx2500
JG: Permissible load inertia gearhead output shaft J (xIOkg.m2)
JM: Permissible load inertia at the motor shaft J (xWkg.m2)
I: Gear ratio (Example: i= 3 means the gear ratio or 1/3)

 

  • Permissible Load Inertia At The Motor Shaft
No.Of Phase Motor Frame Size Output Power Permissible Load Inertia At The Motor Shaft
J(x10-4kg.m2) GD2(kg.m2)
DC Power 60 6W,10W,15W 0.062 0.25
70 15W 0.14 0.52
80 25W,40W 0.31 1.2
90 40W 0.75 3
60W 1.1 4.6
90W 1.1 4.6
120W 1.1 4.6
100 250W 2 8

Output power for torque motors

 

  • The Calculation For The Permissible Torque Of Gearhead

Permissible torque for some products are omitted. In that case, use the equation below to calculate the permissible torque.

Permissible torque TG=TMxixη

TG:Permissible torque of greadhead TM:Motor torque

i:Gear ratio gearhead q:Gearhead efficiency

 

  • Gearhead Efficiency

Gear Ratio

3 3.6 5 6 7.5 9 12.5 15 18 25 30 36 50 60 75 90 100 120 150 180 200
Model
2GN口K
4GN口K 4GN口RC/RT
5GN口K
81% 73% 66%
5GU口KB 5GU口RC/RT 81% 73% 66% 59%
6GU口K 6GU口RC/RT 81% 73% 66%

 

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