Brief: 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. Mechanical screw jacks can be operated by manually or by electrical motor. More than one screw jacks can be connected together to move simultaneously.
Brief: Main components of screw jacks are: trapezoidal lifting screw, worm screw, worm gear and gear housing. Worm screw is rotated manually or by motor. Worm gear is rotated by worm screw. The lifting screw moves through the rotating worm gear. The linear motion speed of lifting screw depends on thread size and rotation ratio of worm gears.
Brief: Worm gear screw jack are the screw-operated jacks, utilized for the process of lifting, utilizing pressure and position adjustment. Highly efficient hand wheel manual jack with self-lock function. The screw shaft can be operated with a small number of handle rotations. Self-lock is possible from any position within the stroke, made from efficient bevel gear and trapezoidal screw. Grease lubrication is standard for the reduction gear part, for smooth movements and use for long periods.
Brief: Electric screw jack is also called motorized screw jack, which is driven by electric motor, it has higher efficiency than manual screw jack. The motor can be geared motor, stepper motor, servo motor, single phase AC motor, three phase AC motor and 12v or 24v DC motor. Motor adaptor flanges are used to mount motors to worm gear screw jacks and house the coupling for connecting the motor to the drive shaft. When ordering, please specify the side at which the motor adaptor flange is to be attached.
Brief: Motorised screw jack driven motor types include electric motor, gear motor, gear reducer, hydraulic motor, pneumatic motor, explosion proof motor. Motor means asynchronous/induction motor and above motor no brake, if need,marked in purchase order/invoice. Suitable powers cover 1/8HP(90W), 1/6HP(120W), 1/4HP(180W), 1/3HP(250W), 1/2HP(370W), 3/4HP(550W), 1HP(750W), 1.5HP(1.1KW), 2HP(1.5KW), 3HP(2.2KW), 4HP(3KW), 5.5HP(4KW), 7.5HP(5.5KW), 10HP(7.5KW). Input power larger than 7.5KW contact JACTON sales/engineers.
Brief: Electric Screw jack lift Function: The Electric screw jack actuator is a basis jack-up part, accomplish the functions such as lifting, drop, push and inverting through worm gear drives screw, because it is driven by electric motor, it has higher efficiency than manual screw jack.
Brief: Worm gear screw jack or worm screw jack is a mechanical motion control device used for lifting heavy weight objects, push or pull an object. The key components of screw jacks are trapezoidal lifting screw, worm screw, worm gear and gear housing. Worm screw is rotated manually (manual screw jack) or by a motor (electric screw jack).
Brief: Electric motorized driven screw jack are used for rivers, canals, power station sluice gate lifting projects in Australia and Vietnam, which uses electric motor driven instead of human power starting with a simple manual operation screw jacks. Motorized Single unit, pair units...multiple units or tandem screw jack arrangements with kinds of motors for gates. Selecting correct screw jack models following sluice gate sizes, gate weight, gate friction force, water pressure, water impact force, required travel speed etc. Sluice gate is an important application for screw jack mechanism,the mechanism can be manual or electric motor driven.
Brief: Electric motor lifting device: A lifting device consists of an electric motor, a gearbox and a drum with a cable for lifting a mass. Overload safety couplings are used to reduce electric screw jack and motorized screw lifting system damage, repairs and downtime by acting as torque limiters and overload protection. In the event of excessive torque the safety function disengages and the motor gets separated from the motorized screw jack drive system. Overload safety couplings are a life insurance for electric and motorized screw jack or lifting systems, no matter whether the error is due to incorrect operation, faulty programming, material overload or tool breakage.
Brief: Screw jacks should not be driven to their mechanical limits and stroke limit switches can be supplied. Increased protection is available using bellows or a stainless steel screw. Multi-jack lifting systems use 2, 3 or 4 jacks. For reasons of synchronization, it is usual to employ a single geared motor, often with a double output shaft such as is possible with a helical bevel design. Connection between the screw jacks is made by spacer couplings and bevel gearboxes. Ideally the screw jack supplier will take responsibility for the specification and supply of the complete lifting system.
Brief: Screw jacks are suited for lifting, lowering, pushing, pulling and pressing. They can be operated manually or by electric, hydraulic or pneumatic motor. Worm gear screw jacks provide a lifting force of up to 100 tons, a spindle length of up to 10 meters and achieve lifting speeds of up to 0.05 m/s. (higher lifting speeds upon request). Screw gears are designed according to a modular concept allowing for any combination and variation required. On request, screw jacks can be manufactured from rust-free materials to permit use even under extreme chemical stress.
Brief: Screw jacks can be connected directly to an electric motor creating a compact linear drive. Standard 3 phase motors are most common. For lower powers DC motors can be used, or servo motors can achieve high performance. Worm gear screw jacks versions - Rotating screw: Driven by a precision worm gearing (screw keyed to the worm wheel), the rotary motion of the screw is translated into linear motion of the travelling nut on the screw. Trapezoidal screw For tough conditions, good price/performance ratio.
Brief: Motorized-Electric screw jack allowable voltage,phases and hertz includes 380V-3 Phases-50HZ, 220V-3 Phases-50HZ, 400V-3 Phases-50HZ, 415V-3 Phases-50HZ, 440V-3 Phases-50HZ, 480V-3 Phases-50HZ, 220V-3 Phases-60HZ, 240V-3 Phases-60HZ, 480V-3 Phases-60HZ, 110V-Single Phase-60HZ, 120V-Single Phase-60HZ, 220V-Single Phase-50HZ, 230V-Single Phase-50HZ, 240V-Single Phase-50HZ. For special application, for example solar tracker industry, most of engineers or designers prefer to use 24V, 36V, 48V DC motor with gear reducer direct connected worm gear screw jack.
Brief: We can advise on screw jack selection, drive train and system configuration, drive motor and control systems, and installation sequences and techniques. It is important at the design stage that the installation and maintenance instructions have been taken into consideration Rotational speed to the jack input worm shaft. This can be varied by altering the drive motor basic speed by gearing or by an electrical frequency inverter or hydraulic control valves.
Brief: Electric Screw Jack can also be called motorized screw jack, it includes a worm gear screw jack and an electric motor.The screw jack can be self-locking acme screw jack or high precision ball screw jack.The motor can be high precision servo motor,stepper motor,helical gear motor, worm gear motor, 3-phase asynchronous motor and 12v,24v,48v do motor and dc gear motor etc.
Brief: Worm gear screw jacks ( classic and cubical), quick lifting bevel gear screw jacks, Bevel gear boxes can be used as either single drive units or multi lifting systems. Multi lifting Equipment are generally driven by a single motor. This makes the system to lift Equal. When driven by two or more motors sophisticated electrical synchronization and control is required.
Brief: Screw Jacks Linear Actuators and lifting jack is an electric motor. 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. This is achieved like this: an electric motor drives a worm shaft that causes a worm gear to rotate. The worm gear is provided with a threaded spindle (standard: trapezoidal thread; special version: ball screw) – and the Screw jack is finished.
Brief: Servo motor mounts for 2.5-ton, 3-ton, 5-ton, and 10-ton worm gear screw jacks and electric cylinders. Easily attach the motor of your choice to either side of your jack. These mounts are compatible with various servo motors. Motor mounts allow direct coupling to the motor shaft on either the right or the left side of the jack input shaft. For easy installation 2-ton through 20-ton jacks are available with motor mount adapters for standard IEC, or NEMA C-faced motors. Jacks supplied with motor mounts are available with and without IEC, or NEMA c-faced motors. When motors are included they come with the necessary hardware and coupling keys.
Brief: All standard motors are 3-phase, 50 Hz., 380 VAC. Other single phase or three phase motors options are available. Maximum 1500 RPM input. Brake motors are recommended for double lead jacks, ball screw jacks and actuators, and electric cylinders that are more than 30% efficient. It is important to consider the input torque a direct drive motor must deliver at start up. If the motor frequency will be varied to provide a "soft" start, an inverter duty motor may be needed.
Brief: The level of adjustment accuracy depends mainly on the precision of the screw. Positioning accuracy is influenced, in the case of motor-actuated units, by the electrical control and regulating system, the control system of the brake, and by the adjustment precision of the limit switches. Select schematic drive-system layout: Number and arrangement of screw jacks, type of motor, connecting shafts, bevel gear boxes, couplings.
