| Customization: | Available |
|---|---|
| After-sales Service: | Yes |
| Warranty: | 12 Months |
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Safety nut on a 10 tonnes screw jack is an auxiliary nut which follows the worm gear on a translating screw jack. The safety nut is placed on the worm gear. Only a narrow collar remains visible at the housing exit. Depending on the load direction, the nut is visible towards the spindle exit or disappears into the protective tube. A wear inspection can still be performed through a viewing slot in the tube. The connection between the worm wheel and the safety nut is made through integrated claws. The nut combination is always produced as a set. Replacing only one nut will result in a change to the original distance measurement.
Screw Jacks carry the load (compression or tension) axially along their lead screw. Either the "lead nut" for rotating screw jacks or worm gear for translating screw jacks is the mating part, which converts the rotary motion to linear motion. These two parts are also wearing components. Should the mating thread on these components fail then the load would either be completely or partially unsupported by the screw jack. Although generally this is a remote risk for some applications extra safety features are required to ensure that the screw jack can support the load even in emergency situations.
1. Upright or inverted units with maximum static load capacity 10 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 58mm diameter, 12mm pitch (single start trapezoidal screw thread).
4. Available in 8:1 and 24:1 ratios.
5. Custom travel lengths from 20mm to 3500mm.
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.
* Express(Air Courier): Factory to customers' company by FEDEX, DHL, UPS, TNT. Incoterms: EXW, DDU.* Asia: Malaysia, Indonesia, Singapore, Pakistan, Philippines, Vietnam, United Arab Emirates, Thailand, Saudi Arabia, Iran, Turkey, India, Sri Lanka, Israel, Jordan, Kuwait, Qatar.
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