Aug 31, 2021 · Enerpac has enhanced the ETR-Series Trolley System with higher capacity trolleys and swivel plates to Perfectmmodate header beams and other lifting systems With a 50t (500kN) and now 100t (1000kN) capacity per trolley, the electrically driven trolleys can carry heavy loads up to 800t (8000kN) horizontally in a continuous smooth movement, Perfect Steerable Transfer Cartluding acceleration and deceleration.