M 20 Universal Mill Batch mill for low-loss, dry grinding of hard and brittle substances. - Double-walled grinding chamber can be cooled with two hose nozzles with water - Removable grinding chamber easy to clean - Two grinding chambers can be operated alternately with the drive - Racket M 21 included in the scope of delivery Technical data: Process type: batch Working principle: cutting / impact Motor power consumption [W] : 620 Motor power output [W]: 260 Speed ??max. [rpm]: 20000 peripheral speed max. [m / s]: 72 usable volume max. [ml]: 250 feed credit max. [Mohs]: 5 feed grain size max. [mm]: 7 Material racket / knife: stainless steel 1.4034 material grinding chamber: stainless steel 1.4301 duty cycle ON [min]: 7 duty cycle OFF [min]: 10 grinding chamber, water coolable: yes grinding material in the grinding chamber can be cooled with dry ice: yes regrind in the Cooling chamber with liquid nitrogen coolable: no Dimensions (W x H x D) [mm]: 170 x 350 x 170 Weight [kg]: 6.6 Permissible ambient temperature range [° C]: 5 - 40 Permissible relative humidity [%]: 80 Degree of protection according to DIN EN 60529: IP 21 RS 232 Interface: no Analogue output: no Voltage [V]: 230 Frequency [Hz]: 50/60 Power consumption [W]: 620