Driven machine

Effective daily operating period under load in hours

Driven machine

Effective daily operating period under load in hours

¡Â0.5

>0.5~10

>10

¡Â0.5

>0.5~10

>10

Waste water treatment

Conveyors

Thickeners   (central drive)

-

-

1.2

Bucket conveyor

-

1.2

1.5

Filter presses

1.0

1.3

1.5

Hauling winches

1.4

1.6

1.6

Flocculation apparata

0.8

1.0

1.3

Hoists

-

1.5

1.8

Aeraors

-

1.8

2.0

Belt conveyors
    ¡Â150kW

1.0

1.2

1.3

Racking equipment

1.0

1.2

1.3

Belt conveyors
    ¡Ã150kW 

1.1

1.3

1.4

Combined  longitudinal
  and rotary racks

1.0

1.3

1.5

Good lift ^*

-

1.2

1.5

Pre-thickeners

-

1.1

1.3

Passenger lifts^*

-

1.5

1.8

Screw pumps

-

1.3

1.5

Apron conveyors

-

1.2

1.5

Water turbines

-

-

2.0

Escalators

-

1.2

1.4

centrifugal pumps

1.0

1.2

1.3

Rail traveling gears

-

1.5

-

positive-

  displacement   pumps 

1 piston

1.3

1.4

1.8

Frequency converters

-

1.8

2.0

> 1 piston

1.2

1.4

1.5

Reciprocating compressors

-

1.8

1.9

Dredgers

Cranes^**

Bucket conveyors

-

1.6

1.6

Slewing gears^*

1.0

1.4

1.8

Dumping devices

-

1.3

1.5

Luffing gear

1.0

1.1

1.4

Caterpillar travelling gears

1.2

1.3

1.8

Traveling gears

1.1

1.6

2.0

Bucket wheel excavators

Hoisting gear

1.0

1.1

1.4

    as pick- up

1.7

1.7

Derricking gears

1.0

1.2

1.6

    for primitive material

-

2.2

2.2

Cooling towers

Cutter head

Cooling tower fans

-

-

2.0

Traversing gears

-

1.4

1.8

Blowers(axial and radial)

-

1.4

1.5