Optibelt ZRP - ZRL Graph of Torque

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4.2 ZRL graph of torque
Torque/speed graph for section selection of open-ended optibelt ZRL-M (z
emax
= 12)
and joined endless
optibelt ZRL-V timing belts (z
emax
= 6)
Torque on small pulley [Nm]
→
A drive ratio of i = 1 has been assumed for the upper torque limit
of open-ended ZRL-M timing belting. This limit is dependant on
pulley diameter. Therefore with a pulley having 24 teeth the
calculation can be made with a maximum of 12 teeth in mesh.
The upper torque limits of the joined endless ZRL-V timing belts,
where a maximum of 6 teeth in mesh are taken into account, are
50 % lower and have not been plotted here.
Number of teeth on small pulley z
k
→
Graph 4.1: ZRL torque ranges