Blender with Mechanical Lock has capacity from 5 litres to 400 litres, stainless steel made contact parts and non- contact parts made using mild steel cladded with stainless steel. The Blender has mirror finished contact parts and matt finished non contact parts. The Blender has charging nozzle with cover that is provided on top with quick opening and closing arrangement and has mechanical locking arrangement. The Blender with Mechanical Lock has leak proof vent on top, flexibility of accepting variable bin sizes and has limit switch on entry door to prevent accidental operation.