Product Description S series Helical Geared Motor Characteristics 1. Features: High efficiency: 75%-80%; High technology: the helical gear and a worm gear combined with an integrated transmission to improve the torque and efficiency. High precision: the gear is made of high-quality alloy steel forging, carbonitriding and hardening treatment, grinding process to ensure high precision and stable running. … Continue reading China factory S67 Series Helical Geared Box with Best Sales