250 kN Capacity Screw Jack Metric Machine Screw

Jacton 250 kn capacity screw jack metric machine screw designed for unwind stands or calender stacks or electron beam adjustments. Available in 10:1 and 40:1 worm gear ratios. There are no standard stroke and all worm gear screw jack systems travel lengths are built with customers required. Available stroke from 40mm to 4500mm.
Features of 250 kN Capacity Screw Jack Metric Machine Screw
1. Upright or inverted installation with maximum static load capacity 250 kN in tension or compression.
2. Self-locking with no need brake or lock mechanisms to hold position.
3. 80mm diameter lifting screw, 10mm lead acme screw (single start acme thread).
4. Available in 10:1 and 40:1 ratios.
5. Custom travel lengths from 40mm to 4500mm.
6. Translating screw (travelling screw jacks), keyed screw for anti-rotation, and rotating screw with traveling nut (travelling nut screw jacks) as the standard configurations.
7. Worm screw is rotated by a hand wheel with handle (manual screw jack) or by a electric motor (electric screw jack).
8. Can be applied either individually use or combined into a exactly synchronized lifting system, linked by connecting shafts, bevel gears and couplings etc.
Structures of 250 kN Capacity Screw Jack Metric Machine Screw
1. Lifting screw material - C45 steel
2. Worm (input shaft) material - C45 steel
3. Worm gear material - bronze
4. Housing (gearbox) material - ductile iron
5. Traveling nut or Safety nut - bronze
Specifications of 250 kN Capacity Screw Jack Metric Machine Screw
The specifications of 250 kn capacity screw jack metric machine screw include maximum load capacity, worm screw diameter and pitch, worm gear ratio, allowable maximum input power, torque and speed and overall efficiency etc.
1. Conditions: 20% running time/60 minutes or 30% running time/10 minutes, 20 °C ambient temperature. Maximum allowable input power 9kw, when your selection is exceed the maximum input power, the operational restrictions due to thermal limits. you will need to choose the bigger size screw jacks in order to allow effective heat dissipation.
2. Nm=input torque required, kW=input power required.
3. H=high ratio 10:1 (1mm stroke for one input turn), L=slow ratio 40:1 (0.25mm stroke for one input turn).
4. Selection of screw jacks using above figures should only be carried out in consultation with Jacton engineers.
Assembly Drawings of 250 kN Capacity Screw Jack Metric Machine Screw
Find out 250 kn capacity screw jack metric machine screw front view, side view and top view assembly drawings. About 2D Autocad dwg, dxf assembly drawings, and 3D stp, step, model, igs, prt or catpart assembly drawings of 250 kn capacity screw jack metric machine screw, please contact us directly.