Worm screw lift is done through the worm gear screw lift, down, forward, flipping and other functions, is a basic lifting components, it has been listed as the JB / T8809-1998 standard. Electric screw jacks. Fast lift when lifting speed: 1450 (input rotational speed) ÷ 6 (ratio) × 6mm (pitch) = 1450 mm / min when a slow lifting speed: 1450 (input rotational speed) ÷ 24 (ratio) × 6mm (pitch) = 362 mm / min. Helical screw lift screw jack, endurance long warranty, MA screw jack provided by the Texas Machinery Co., Ltd. Kun-ho. Screw jacks, endurance long warranty, MA screw jacks Texas Haokun Machinery Co., Ltd. (www.sdnljsj.com) (www.sdnljsj.com) this year introduced a new upgrade, the above picture is for reference only, please dial this page Phone or pictures on obtain the latest information, contact: Liu Zhenhua.