|
Type of machine |
L h [hours] |
|
Instruments and tools seldom used |
1000 |
|
Electrical household machines, small fans |
2000 - 4000 |
|
Machines for intermittent operation, hand tools, workshop cranes,agricultural machines |
4000 - 8000 |
|
Machines for intermittent operation with demands for high reliability: auxiliary machines in power stations, belt conveyors, transport trucks, elevators |
8000 - 15000 |
|
Rolling mills |
6000 - 12000 |
|
Machines designed for 8 to 16 hours operation: stationary electric motors, gear drives, spindles of textile machines, machines for processing plastics, cranes |
15000 - 30000 |
|
Cutting machines generally |
20000 - 30000 |
|
Machines for permanent operation: stationary electric machines, transport equipment, roller beds, pumps, centrifuges, blowers, compressors, hammer mills, breakers, briquetting presses, mining elevators, rope disks |
40000 - 60000 |
|
Machines for permanent operation with high operating safety: paper machines, power stations, water works, ship machines |
100000 - 200000 |