Linear Line EN

Speedy Rail

Power required to drive a trolley or bar The following calculations are true in a system without overloads genera ted either by misalignement or an incorrect assembly. The following sli ding friction factors are approximate with excess.

Terminology and dimensional units

M [kg]

moving mass

n r

number of moving rollers

C r = 100 Nmm

internal max resisting torque for each roller

a [m/s 2 ] g [m/s 2 ]

moving mass acceleration

gravity acceleration

f cc = 0.05 f vc = 0.065

drive resisting coefficient of plastic compound rollers

drive resisting coefficient of ‘V’ shaped plastic compound rollers

F [N]

drive resisting force max traverse speed

V [m/s]

N [W]

power

d [mm]

average roller diameter

Calculations traverse

2 n r C r d

resisting force

F= Ma + Mgf +

N = F V

max power

Fig. 178

vertical lift

2 n r C r d

F = M a + M g (1 + f ) +

resisting force

N = F V

max power

S R

Fig. 179

SR-83