JTM50 Worm Screw Jack Features 1. Maximum load capacity 50KN or 5 ton. 2. Trapezoidal screw diameter 40 mm, pitch 8 mm. Gearbox sizes 205x152x129mm. Center height 56mm, center distance 56mm. Worm shaft diameter 20mm. 3. High gear ratio 1/6, low gear ratio 1/24. 4. Translating screw, rotating screw with bronze travelling nut, anti-rotation device keyed screw configurations in upright or inverted mounting orientation. 5. Precision positioning, self-locking trapezoidal screw which supports the loads and hold position with no need to employ brake mechanism or other locking systems. 6. Manual operation worm screw jack, Electric motor worm screw jack or Both are available. 7. Top plate (I), clevis end (II), plain end(III) and threaded end (IV) are available. Custom made spherical hinge, forked head. 8. Single unit or multiple-units JTM50 worm screw jack lifting systems arrangements are available.