Home & Kitchen > Kitchen & Dining > Small Appliances > Coffee, Tea & Espresso > Coffee Grinders > Blade Coffee Grinders
4-Blade Electric Coffee Grinder Stainless Steel Bean Mill Household Flour Mill
Brand: Generic / OEM
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Audited BOM: 5 Components
RMA Chain & Defect Intelligence
Root cause causal graph linking factory engineering flaws to verified consumer return reasons.
⚡ Causal Link: Defect to Consumer Return
The choice of a motor with CCA (aluminum) winding drastically reduces the appliance's thermal tolerance. Under normal coffee grinding use, the accumulated heat melts the motor's insulation varnish, causing an internal short circuit and complete burnout, leading to the highest rate of returns (RMA) and one-star reviews.
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