Customization: | Available |
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After-sales Service: | Yes |
Warranty: | 12 Months |
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The 25 Ton Capacity Mechanical Screw Actuators Lifting Shaft incorporates an alloy steel worm which drives a high strength bronze worm gear (drive sleeve). Since it has a self-locking function due to the adoption of trapezoidal thread of an optimum lead, this screw jack does not need any braking mechanism in the driving shaft system.
1. Upright or inverted units with maximum static load capacity 25 ton in tension or compression.
2. With higher ratios are inherently self-locking and will hold the loads without creep as long as the screw jack is not subject to vibration.
3. Lifting screw with 90mm diameter, 16mm pitch (single start trapezoidal screw thread).
4. Available in 10.667:1 and 32:1 ratios.
5. Custom travel lengths from 30mm to 5500mm.
6. Translating lifting screws (travelling screw jacks), keyed lifting screws for anti-rotation (keyed screw jacks), and rotating lifting screws with traveling nut (travelling nut screw jacks) as the standard configurations.
7. Worm screw (input shaft) is rotated by a handwheel with handle (manually operated screw jack) or by a gear motor (electrically operated screw jack).
8. Can be applied either individually use or in tandem or in multiple arrangements for exactly synchronized lifting system, linked by connecting shafts, bevel gears and couplings etc.
1. Note: The dark gray figures in the tables indicates operational restrictions due to thermal limits. Selection of screw jacks using these figures should only be carried out in consultation with our engineers. When your selection is made within the areas shaded dark gray, you will need to reduce duty cycle or choose the bigger size screw jack in order to allow effective heat dissipation.
Before packing, all Customers' orders will be inspected following Production Drawings and Inspection Report.
* Inspection of Screw Jack: model, screw diameter, screw pitch, installation type, basic design, stroke length, screw end types, wormgear ratio, worm shaft diameter, input shaft types, motor flange types, accessories, lubrications, housing color, orders with special requirements, smooth lifting.
* Inspection of Bevel Gearbox: model, input shaft diameter, output shaft(solid or hollow) diameter, input flange dimensions, shaft arrangements, rotation directions, mounting positions, gear ratios, accessories, lubrications, housing color, orders with special requirements.
* Inspection of Lifting System: except above points, must inspect the order quantities of jacks, gearboxes and others.