3-phase external rotor motor in EC technology Integrated operating electronics with extensive drive functions Combined with single and multi-stage planetary gears in modular design Gear housing made of die-cast zinc Noise-optimised helical gearing made of low-friction-optimised plastic in the input stage Planetary gears in the second stage made of case-hardened steel for high torque Grease lubrication for maintenance-free continuous operation Available in various reduction ratios HRL 63 version with cage bearing system for increased radial loads