Monday, October 30, 2017

Backlash



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:


  1. The clearance between the belt tooth and sprocket groove or “backlash”.
  2. The spring rate or “stiffness” of the tensile member used.
  3. The installation tension applied.
  4. 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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