Features 1. Maximum load capacity 2.5 ton, maximum torque 18 Nm. 2. Lift screw diameter 30 mm, pitch 6 mm. Gearbox sizes 167x122x97mm. Center height 45mm, center distance 45mm. Worm shaft diameter 16mm. 3. 6:1, 24:1 gear ratios 4. Translating screw, rotating screw with aluminum bronze traveling nut, non-rotation keyed screw configurations in upright or inverted mounting orientation. 5. Precisely positioning, self-locking acme screw which supports the loads and hold position with no need to employ brake mechanism or other locking systems. 6. Manual machine screw jack by hand wheel or hand crank, electrical drive machine screw jack by electric motor or gearmotor driven, or both. 7. 3-phase or single phase motor driven with 1500 rpm input, standard lifting speed 1500 mm/min and 375 mm/min. 8. Top plate (I), clevis end (II), plain end(III) and threaded end (IV) are available. Custom made spherical hinge, forked head. 9. Individually or multiple jtw-2.5t machine screw jack lift system arrangements are available.