NRM type motors Specifications. YM type motors Specifications. RM type motors Excellent performance under "Service Working Conditions"! Safety with Explosion-Proof Mechanism! Long Life! Maintenance Free! Easy Operation! Powerful! Light and Compact! AIR WINCHES You can expect splendid performance even under heavy working conditions such as high temperature, high humidity, and overload. Yutani Air Motors are free from explosion with nonspark mechanism. Yutanis long experience and advanced know-how assure you of excellent durability. You can rely on Yutani Air Motors. Quick to start or stop. Easy to control the rotation speed. High efficiency with multi-vane rotary engine. Light weight and compact in size with unique reduction gear system.