Meanwhile screw thread sizes (including pitch) is fixed. The important parameter is the calculated landing speed pitch. SWL2.5 pitch of 6mm quick 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 SJ worm gear screw jack screw jack screw factory direct _ _ endurance of non-standard spiral screw lift provided by the Texas Machinery Co., Ltd. Kun-ho. Helical screw lift factory direct _ _ endurance of non-standard spiral screw lift 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 You call Tel picture on this page or to obtain the latest information, contact: Liu Zhenhua.