Roh'lix^® Thrust Calculation

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For applications with higher acceleration or deceleration rates,
the additional force required due to inertia can be calculated by:

Fa/d = acceleration / deceleration force (lbs)

W = weight being accelerated / decelerated (lbs)

V = change in velocity in ips (inches per second)

t = acceleration / deceleration time (seconds)

Note: If the time for accel / decel is not known for sure, estimate the amount of time in order to get an estimate of the amount of accel / decel force. Add the amount of acceleration / deceleration force to the amount of thrust force previously calculated to determine the total thrust force required:

Total Thrust Force = Thrust force previously calculated + F_a/d

Note: If the total thrust force seems excessive, you may increase the amount of accel / decel time to decrease the thrust requirement.

Roh'lix^® Torque Calculation

For sizing the amount of driveshaft torque required:

T = torque required to move load (in-lbs)

F = total thrust force required to move load (lbs)

S = Roh'lix lead (inches per shaft revolution)

e = Roh'lix efficiency = 0.90 (90%)

For determining additional driveshaft torque required where higher acceleration / deceleration rates exists:

Ta/d = torque required to accel / decel the load (in-lbs)

WK² = driveshaft inertia (solid shaft) = 1/8 WD² (lb-in² )

W = weight of shaft (lbs) D = diameter of shaft (inches)

N = change in speed (rpm)

t = acceleration / deceleration time (seconds)

F_a/d = acceleration / deceleration force (lbs)

S = Roh'lix lead (inches per shaft revolution)