some new models arrive in 2020: The maximum fan speed: Ikawa: 30000 rpm Kaffelogic: 14700 rpm. They coined it transitional fluidisation ( glass flow + fluid flow) JMS-272 1600w 250 deg c 100g 37.5 x 14 cm there's a narrower chamber for SR series, they measure airflow to increase from 2.1 to 4.3 CFM pros and cons of fluid bed