Chain Pull Calculator

Inputs

Transmitted power (P)

Mechanical power carried by the chain.

Sprocket pitch diameter (D)

Pitch diameter of the sprocket being checked.

Sprocket speed (n)

Sprocket rotational speed.

rpm

Service factor (SF)

Multiplier for shock, duty cycle and uncertain loading.

Allowable chain load (F_allow)

Allowable working load or rated working tension for the selected chain.

Default result

Design chain pull(F_d)

4,775N

Pass

4.775 kN · 1,073 lbf

Effective pull multiplied by service factor.

Also computed

Effective pull(F)3,183N

3.183 kN · 715.6 lbf

F = P / v.

Chain speed(v)1.571m/s

v = pi*D*n/60 at the pitch line.

Sprocket torque(T)159.2N·m

T = F*D/2.

Load utilization(U)0.5968

Design pull / allowable chain load.

Method notes 3 notes

Effective chain pull comes from transmitted power divided by pitch-line speed: F = P/v.
This is a steady running-tension check. Starting shock, impact, polygonal speed variation, chain sag, centrifugal pull, lubrication, wear and sprocket tooth capacity are not included.
Use the chain manufacturer rating, service factor and installation guidance for final selection.