Brief: Stainless Steel Machine Screw Jacks are ideal for use in demanding environments where corrosion resistance is required. All external components are manufactured from 300 series Stainless Steel materials. These jacks use a stainless steel worm with a high strength bronze drive sleeve. Stainless steel machine screw jacks are used extensively in the paper industry. Stainless steel jacks used in a dairy processing application.
Brief: Mechanical Worm Gear Screw Jacks feature AISI 304 as standard for all components, including the threaded spindles, covers, bushings, casings, end fittings and motor flanges. The stainless steel screw jacks series can be applied in marine environments where oxidising is a problem. stainless steel screw jacks are ideal for applications where a permanent resistance to oxidising is a requirement.
Brief: Stainless Steel Trapezoidal Screw Jacks are for the new market demands, hygienic requirements in food industry and the applications in oxidizing environments. In all the Screw jacks construction models. The components made of stainless steel are housings, input shafts, bearings, bushings, covers, motor flanges, self-locking trapezoidal screw and all screw end fittings.
Brief: Stainless Steel Screw Jacks are For Extreme Environmental and Operational Conditions. The shiny casing, mounting flange and cover indicate the highest degree of corrosion resistance. In simple terms, the conventional aluminum components as well as the external parts have been replaced by components made of the aluminum bronze material. All the spindles and shafts as well as the internal elements are manufactured from stainless steel or synthetic material (seals).
Brief: Stainless Steel Machine Screw Jacks are typically used in harsh or corrosive environments or those with a regular wash down requirement. Industries such as Marine, Water Treatment, Nuclear, Food Processing, Offshore, Pulp and Paper use stainless steel screw jacks. For each application, variants with different material grades or plated components can be used, tailoring the product for the specific application and budget.
Brief: Stainless steel machine screw jacks are available in translating and rotating screw designs in capacity sizes from 1-tons to 35-tons. The design is optimised for reliable performance in some of the most arduous environments. Plus there is a large selection of standard accessories and options so you can configure a standard design that is just right for your application. These options include Anti-Backlash, Anti-Rotation (Keyed) and Safety Nut designs.
Brief: Worm gear trapezoidal screw jack is used in applications where linear motion is required. Lifting of any load, pushing or pulling of mechanical equipment, adjusting of tight clearances of mechanical parts can be done by screw jacks. Jack screws can be used as linear motors, linear actuators, or mechanical lifts depending on type of motion.
Brief: Screw jacks are transmission products (machine screws or ball screws) that make rotary motion using gearbox assemblies (worm gears or bevel gears) and motors. They can be used to push, pull, tension, unlock, tilt, rotate, pull, raise or lower loads ranging from a few kilos to several thousand tons.
Brief: Industrial Linear Screw Jack Combining a spindle and gearbox, there are 3 configurations available. Translating Spindle, Translating Spindle with Anti-Rotation, Travelling Nut. Models include Ball Screw Or Trapezoidal Spindles, feature a modular design, and are suitable for universal mounting. Options include material & surface coatings for harsh environments, manual drive or motorised (AC, DC or servo driven). In addition to the Screw Jack, we can offer a complete lifting system package (including controls, drives, visualisation, feedback, gearboxes and mechanical power transmission).
Brief: In the case of screw jacks with trapezoidal thread spindles, only a small part of the drive power is converted into lifting force. There are losses in the worm drive and at the trapezoidal thread, which have to be dissipated in the form of heat. The efficiency of trapezoid thread spindles is far lower as compared to ball screw spindles because of the sliding friction. However, the trapezoidal screw is technically simpler and less expensive. Any securing, for example by a brake, should be examined individually, owing to the limited self-locking of trapezoidal screws.
Brief: The screw jack is sealed and filled with a synthetic lubricant. In normal operation, the gearbox is lubricated for life. The trapezoid thread spindle must be inspected regularly and re-lubricated according to the operating cycle. In the case of long-life systems (for example, working platforms or theatre stages) the grease loses its lubrication properties after approx. 5 years. Dust and dirt enhance this effect. We recommend a complete cleaning and re-greasing after 5 years.
Brief: Axially moving trapezoidal screw. Rotating trapezoidal screw with travelling nut. To determine the correct size of screw jack it is necessary to know the load and required lifting speed. A significant proportion of the applied power is used in overcoming the friction between the trapezoidal screw and nut. These losses are converted into heat, and therefore either the speed, load or duty factor must be limited in order to avoid overheating of the screw jack. For this reason ball screw jacks can be used – either at higher speeds or for higher duty factors. For screw jack arrangements in which several screw jacks, differential gears, couplings etc. are combined, regard must be paid to losses in the various elements and to alignment errors.
Brief: Screw jacks with a single pitch trapezoid thread spindles have a limited self-locking capability which cannot always be relied upon, especially with impact loads or vibrations (brake recommended). Trapezoidal Screw Jacks utilize the same rugged design as Machine Screw Jacks. These true metric jacks include a lift shaft with a special trapezoidal thread form. This thread form has been created to stay within standards yet retains the centralizing feature of our acme threads. These jacks can be supplied with IEC motor mounts.
Brief: Wrom gear screw jacks that are properly selected and maintained will reliably lift, position, support or hold industrial loads for years. Incorporating them into mechanized applications is a fairly simple matter once jack designs are understood. The basic components of machine screw jacks are lifting screw, gear set, and thrust bearing. Jacks come in three basic designs – Translating, Keyed for Non-Rotation, and Keyed for Traveling Nut. They can be specified with a choice of four standard screw end conditions, plain end, top plate end, threaded end, or Male clevis end.
Brief: Broad, strong Acme threads make these screw jacks better than ball screw jacks for heavy loads, intermittent positioning applications, and where vibration is present. Screw jacks come assembled, threaded, and ready for hookup. Connect a motor or hand-crank shaft to the screw jack shaft to lift, hold, position, and level loads. Travel distance per turn, also known as screw lead, is the distance a load moves with one revolution of the shaft.
Brief: Worm gear screw jacks are very good in multiple jack systems, because the torsional deflection of connecting shafts and couplings has little effect on positioning. Under heavy load, worm gear screw jacks are not designed for high use or heavy duty cycle applications. They also suffer from low travel rates or speed and low efficiency. However, the lack of efficiency inherent in worm gearing produces the self-locking benefit associated with worm gear screw jacks.
Brief: Worm gear screw jacks set new engineering standards for precision and reliability. These screw jacks meet all the necessary safety, cost-efficiency, and durability mandates of your application. Trapezoidal screw for rough conditions and good price/performance ratio. Choose from our selection of Acme screw jacks, lifting jacks, ball screw jacks, and more. In stock and ready to ship.
Brief: Motor and screw jack assemblies can be installed in any position. The worm gearing has a specially modified form which results in low inter-gear specific pressures and an extended working life. The worm is manufactured from high quality alloy steel, hardened and ground. Normally the spindle pitch and gear ratio are matched. Single start precision trapezoidal screws are normally self locking. However safety regulations must be observed.
Brief: A trapezoidal screw or ball screw is combined with a worm gear in the construction of these linear jack actuators. Connecting these to a drive motor is all that is required in order for them to properly function. Machine, ball and high-lead ball screw types are all available for purchase. These machines use time-proven gear reducer technology as well as advanced screw technology.
Brief: Screw Jacks- Speed, power and stroke length customized to suit your operating conditions- Number of input shafts to meet your requirements- Trapezoidal and ball screw spindles with non-standard diameters and pitches are available- Selection of different head types- Protection against contamination by bellows made of different materials and spring steel covers- Combination with angle gears, couplings and motors according to your order.
