A gear reducer (or gearbox) lowers the speed and increases the torque from a motor to another part. Benefits: - More torque (force) - Speed control - Efficiency - Compact size - Parallel Axes: Common, efficient. - Skew Axes: For non-parallel shafts. - Orthogonal Axes: Right-angle setups. - Coaxial Axes: Input/output shafts are aligned. - Spur Gear: Simple, efficient. - Worm Gear: High reduction, precise control. - Planetary Gear: Compact, versatile. - Bevel Gear: Changes shaft direction. - Helic