Q: What is Backlash?
A: The term “backlash” is used interchangeably
with groove clearance, which is basically the gap between the belt tooth and the
sprocket gap, and vice-versa.
In the
world of registration and synchronization, the overall accuracy or precision of
an indexing or position drive is quite vital, and is mainly determined by:
- The clearance between the belt tooth and sprocket groove or “backlash”.
- The spring rate or “stiffness” of the tensile member used.
- The installation tension applied.
- Tooth deformation due to the drive torque load.
Something
else to consider regarding backlash would be the tensile cord material within
the belt. The belt tensile member should have a high tensile stiffness, in
order to prevent belt elongation under torque loading.
The
values of backlash will differ between belt product lines and their respective
pitches, so if any questions do arise, or for additional information on this or
any other topic, please contact Gates Product Application Engineering by phone
at 303-744-5800 or by email at ptpasupport@gates.com.
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