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Technical Requirement
- DC Gear Motor
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- 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 | ||||||||||||||||||||||
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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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