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Current method & challenge

The OEM was using press fit as its current method, but was facing the following challenges due to gaps left between the bearing and shaft:

  • Loosening of the bearing within the assembly resulting in machine failure
  • During operations, assembly weakens to <30 Nm, well below the customer requirements

This resulted in a high number of warranty claims due to bearing loosening at customers end

Solution

LOCTITE 638 is dispensed manually on the shaft. The bearing is slipped onto the motor shaft & then heat cured at 60° C

Result

  • Eliminated previous failures of bearing shaft, which reduced warranty and rework costs by 30%
  • Reliability increased by 2x. Heat curing of LOCTITE 648 increased the assembly strength to >60 Nm
  • High machining costs to maintain tolerance were eliminated

Additional benefit

Additional benefit: 2x Reliability2x Reliability Additional benefit: Reduction 50% CostReduction 50% Cost

Are you also facing similar challenges? Download our free Motor design guide today and learn how you can also build reliable assemblies.

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