3 kg or 5 kg roaster: which suits a small roastery?
Compare two roaster sizes by throughput, working batch load, and growth potential.
3 KGWORKING BATCH UP TO 3 KG
5 KGWORKING BATCH UP TO 5 KG
3 kg versus 5 kg
Parameter3 KG5 KG
Batch capacityUp to 3 kg of green coffeeUp to 5 kg of green coffee
Working batch loadPlanning estimate: 2.2–3 kg of green coffeePlanning estimate: 4–5 kg of green coffee
Example: 8 cycles20.8 kg with a 2.6 kg batch load36 kg with a 4.5 kg batch load
Cycles to process 36 kgAbout 14 cycles at 2.6 kg per batch8 cycles at 4.5 kg per batch
PremisesBased on the model's dimensions and requirementsBased on the model's dimensions and requirements
Suitable applicationsStarting out, small batches, and trainingCommercial production with steady demand
Growth potentialThrough additional cycles or shiftsBy utilizing the shift and maintaining steady demand
* Throughput figures are indicative scenarios and depend on the model, roast profile, and workflow.
01/workday
One working day
For the estimated 36 kg, you need about 14 batches of 2.6 kg or 8 batches of 4.5 kg. The timeline is schematic: cycle duration depends on the model and roast profile.
A larger batch does not remove the need for stable roast profiles and an organized workflow.
3 KG≈ 20.8 kg of green coffee / 8 cycles5 KG≈ 36 kg of green coffee / 8 cycles
03/size and workspace
04/Heating
Gas or electric
Both heating options are available in the 3 kg and 5 kg classes. Check the selected model's specifications.
GASFast response · engineered installationELECTRICClean control · electrical power requirements
05/growth
Estimate: 5 kg × 8 cycles × drum load factor, kg per shift
06/conclusion
The practical conclusion
Organization, team capacity, and sales channels matter more than a single batch-capacity figure.
3 kg — for starting out and flexibility
5 kg — for growth and consistency
The process matters more than size
Think ahead
04/market data
3–6 kg models to investigate
Specifications are taken from Alibaba listings and checked against the linked sources. These are candidates for further investigation, not supplier rankings.
When is a 3 kg roaster more practical than a 5 kg model?+
When production runs are small, the product range is broad, and the available cycle count can comfortably meet weekly demand without overloading the operator.
When should I choose a 5 kg roaster?+
When commercial demand is steady, a 3 kg roaster requires too many cycles, and cooling and packaging can handle greater output.
Can I compare roaster sizes using kg/h figures from different listings?+
Only after aligning the operating conditions. Without comparable batch loads, roast durations, and pauses, those figures create false precision.
How should I use the table on this page?+
Use it as a planning guide. Check actual specifications, minimum batch load, premises, and energy supply against the selected model and project.
3 KGWORKING BATCH UP TO 3 KG
