Worm Planetary Gear box for Slew Drive of Stacker cum Reclaimer Machine

Elecon has manufactured and supplied Worm Planetary type Slew drive gear box for Stacker Reclaimer machine to SAIL Durgapur. This gear box is a replacement of existing imported gear box.The worm planetary gearbox is of horizontally input shaft and vertical output shaft type wall-mounted gearbox comprising of three-stage reductions viz.1 st stage of worm gear pair and 2 nd, 3 rd stage is designed with planetary gear systems. The gearbox is supplied with foundation plates, which is rigidly bolted with the structure.The drive is equipped with a slip coupling (overload protection). In case of overload, the worm gear rim slips through, thus limiting the torque. The slip moment is adjusted via. a spring washer block by an adjusting bolt.The Gear hosing is made up of Fe-410 WA material duly welded and stress relieved before machining. The worm shaft and wheel are made out of 20MnCr5 and Phosphor Bronze (Pb2-C) and sun pinion, planet wheels are made up of case-hardening alloy steel. Teeth are case hardened and ground to very close accuracy as per latest DIN specifications. The Annulus is made up of high tensile alloy steel duly heat treated so as to ensure better strength and reliability.The gearbox is splash lubricated. Being dipped into the oil sump lubricates the gears. Technical specifications : Type & Size 7 NU V / PBV 45 Power 7.5 Kw Speed 1500 RPM Ratio : 1125/1