Planetary Gearbox RANGE. Torque range up to 4072 kNm. WHAT IS IT? Compact Epicyclical train (sun, planet and Ring Gears) rotate on parallel axis to transmit power coaxially. ... Crystallizers, Agitators, Cranes, Stacker Reclaimer, Apron Feeder, Cement Mill, Kiln, etc. MAJOR INDUSTRIES.