Start by determining your typical batch weight, and remember to leave about 20% headroom to avoid overloading, which can affect roast quality and machine life. Here is a general recommendation:
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200 g to 600 g (sample roasting or home use): HB‑M2S or HB‑M6S.
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1 kg to 3 kg (small cafés): HB‑L2S or HB‑L3S.
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3 kg to 6 kg (medium‑sized cafés or studios): HB‑L6S or HB‑L8S.
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1 kg to 8 kg (small roasting factories): PEAK‑P1, P3, or P8.
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10 kg to 15 kg (chain brands or large workshops): PEAK‑P15.
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30 kg (industrial‑scale production): PEAK‑P30.
For daily operation, it is best to keep your charge weight between 70% and 90% of the rated capacity – this ensures even bean agitation while maintaining efficiency.