 Regarding the Load-Time Factor and the Starting Frequency |
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| In case of the Bando wire rope hoist is set, the Load-Time factor is set at 40% and the Starting Frequency is set at 240 times /hour for the repetitive operation. |
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Load-Time Factor = ((Total of the time when the motor is live with electricity in a severe working condition)/60 minutes)× 100
Starting Frequency = Starting frequency per hour in an severe working condition |
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| Applicatoin frequency of the wire rope hoist |
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| Item |
Daily average usage time (hr) |
≤0.5 |
≤1 |
≤2 |
≤4 |
≤8 |
≤16 |
＞16 |
| Light load |
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Can be used for 8 hours per day 8 |
1m |
1m |
1m |
2m |
2m |
3m |
4m |
| Standard load |
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Can be used for 4 hours per day 4 |
1m |
1m |
2m |
2m |
3m |
4m |
5m |
| Heavy load |
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Can be used for 1 hour per day |
1m |
2m |
3m |
4m |
4m |
5m |
5m |
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| The signs such as l m and ll m in the above table show the applicable ranges of the crane structural standard. The wire rope hoist can be used up to ll m. |
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| Types and applicable ranges of cranes |
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| Types of cranes |
Applicable range |
Types of cranes |
Applicable range |
| Overhead cranes at power plants |
1m |
Bucket overhead cranes |
Ⅲm~Ⅳm |
| Overhead cranes at machinery factories |
1m |
Scrap yard cranes |
Ⅳm(Ⅰm~Ⅳm) |
| Overhead cranes at warehouses |
Ⅱ m~Ⅲ m |
Iron plate carrying magnet overhead crane |
Ⅲm~Ⅳm(Ⅰm~Ⅳm) |
| Overhead cranes at workshops |
Ⅰ m~Ⅱ m(Ⅱ m) |
Casting cranes |
Ⅲm~Ⅳm(Ⅱm~Ⅳm) |
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| * * The parenthesis ( ) shows the data regarding auxiliary hoists |
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| Example of the calculation of the Load-Time factor and the Starting Frequency |
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| :: Load-Time Factor | :: Starting Frequency |
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| Basic specifications |
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| How to select a model and a type |
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