Techno Products Development Pvt. Ltd. Supplies Heli-Worm Geared Motor. Techno Products Development Pvt. Ltd. Is an ISO 9001:2000 accredited company. The Heli-Worm Geared Motor has a ratio of 9.96 to 245. The system has a rating of 0.18 to 22kW. It has torque up to 4000 Nm.