Description Specifications for Model J-21-A Power: 7.5 kW. Capacity: 50 kg/h. Weight: 180 kg. Dimensions: 700 x 750 x 1550 mm. Features: Over-load safety device, adjustable sift aperture diameters Specifications for Model J-21-B Power: 11.0 kW. Capacity: 100 kg/h. Weight: 400 kg. Dimensions: 1100 x 5000 x 1400 mm.