Belt conveyors utilize a friction drive and accordingly, when power is applied to the drive system, one run of the belt will experience a higher tension than the other. The amount of slack side tension required to prevent slippage at the drive is a function of several constant factors amongst others is the coefficient of friction between the drive system. Below is a list of standard drive pulley friction factors from various design catalogues and standards.
Friction Factor (Min) | Friction Factor (Max) | Description | Reference | |
---|---|---|---|---|
0.35
|
0.35
|
Rubber surfced belt driving rubeer lagged pulley surface
|
CEMA
|
|
0.35
|
0.35
|
Dry Lagged
|
STEVENS ADAMSON
|
|
0.2
|
0.3
|
Wet Lagged
|
BRIDGESTONE
|
|
0.4
|
0.4
|
Wet and Dirty Lagged
|
LINATEX
|
|
0.4
|
0.45
|
Dry Lagged
|
REMA TIP TOP
|
|
0.35
|
0.35
|
Wet Lagged
|
REMA TIP TOP
|
|
0.25
|
0.25
|
Rubber surfaced belt driving bare steel pulley
|
CEMA
|
|
0.8
|
0.8
|
pulleys lagged with ceramics
|
CMA
|
|
0.35
|
0.35
|
Dry Lagged
|
CEMA
|
|
0.35
|
0.35
|
Wet Lagged
|
CEMA
|
|
0.35
|
0.35
|
Wet Lagged
|
STEVENS ADAMSON
|
|
0.35
|
0.35
|
Wet and Dirty Lagged
|
STEVENS ADAMSON
|
|
0.6
|
0.6
|
Dry Lagged
|
LINATEX
|
|
0.2
|
0.2
|
Bare pulley running in water
|
CMA
|
|
0.25
|
0.25
|
Bare Pulley
|
CEMA
|
|
0.35
|
0.35
|
Lagged
|
CEMA
|
|
0.35
|
0.35
|
Wet and Dirty Lagged
|
CEMA
|
|
0.35
|
0.35
|
Bare Pulley
|
STEVENS ADAMSON
|
|
0.1
|
0.3
|
Bare Pulley
|
BRIDGESTONE
|
|
0.8
|
0.8
|
Wet Lagged
|
LINATEX
|
|
0.35
|
0.35
|
dry lagged pulleys
|
CMA
|
|
0.35
|
0.35
|
Lagged
|
STEVENS ADAMSON
|
|
0.35
|
0.35
|
Dry Lagged
|
BRIDGESTONE
|
|
0.2
|
0.2
|
Wet and Dirty Lagged
|
BRIDGESTONE
|
|
0.25
|
0.3
|
Wet and Dirty Lagged
|
REMA TIP TOP
|
|
0.5
|
0.5
|
Dimpled Ceramic or equivalent hard material
|
CEMA
|
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