Brief: Manual screw jack (hand wheel screw jacks, hand crank screw jacks, hand operated screw jacks) is driven by a hand wheel or crank or handle. The best advantage is suitable for heavy load, low speed, low service frequency. Our manual screw jacks have different configuration form and assembly type,and the lifting height can highly customized according to users’ demand, low cost and easy operation.
Brief: The screw jack makes it possible to transform the rotary motion provided by a hand wheel, into linear motion that allows push or pull vertical lifting and horizontal positioning. Hand wheels must not be mounted on the drive shaft when not operating the screw jack.
Brief: Safety handwheel for the emergency adjustment and manual adjustment of worm gear screw jacks or systems. Applications examples such as Lifting device with translating screw jack.
Brief: The quick lifting screw jack uses of a spiral-toothed bevel gear and self-locking trapezoidal screw. Providing higher travel speeds when manually operated bevel gear jack with crank handles. Bevel gear jacks use the same trapezoidal or acme screws used in machined screw jacks to move the load. In keeping with their name, however, bevel gear jacks use bevel gears inside the housing instead of worm gearing. Bevel gears are more efficient than worm gearing and they have lower ratios that result in higher speeds and travel rates. Typically, if manual operation a screw jack, the bevel gear jacks maintain self-locking characteristics while providing higher travel speeds.
Brief: Worm gear jack main components of screw jacks are trapezoidal lifting screw, worm screw, worm gear and gear housing. Hand wheels are available for Worm Screw Jack so that it can be easily used for manual operation. Hand wheels are used for self-lock equipped Machine Screw Type Power Jacks only.
Brief: Stainless Steel Machine Screw Jacks feature AISI 304 as standard for all components, including the threaded screw, worm shaft, covers, bushings, casings, bearing, screw end fittings and motor flanges. A hand wheel is a convenient solution for manually operating a jack in intermittent positioning applications. Hand wheels are available in a range of diameters from 5 to 16 inches and can be adapted for use on jacks up to the 20 tons capacity model.
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: Stainless steel Screw Jacks are suitable for application in corrosive environments. Hand wheel Only advisable for emergency use or for reduced number of lifting movements, compatible with the corresponding worm screw jack, supplied ready-drilled and slotted.
Brief: Hand crank table lift mechanisms are available in FOUR POINTS - Manual Crank Table screw jack Mechanism 2.5T Kit, TWO POINTS - Manual Crank Table screw jack Mechanism 2.5T Kit and TWO POINTS - Crank Table screw jack Mechanism 5T Kit.
Brief: When to use manual screw jack? In case of power failure, screw jacks can be moved manually via a handwheel. To do this, one input shaft shall be available on the screw jack for connection of the handwheel.
Brief: Miniature worm gear manual screw jacks jtc2.5 is the baby in the range. It ideally suited for smaller applications such as the adjustment of process equipment and systems. The screw shaft can be operated with a small number of crank handle rotations.
Brief: For emergency manual operation or manual adjustment of worm gear screw jacks. Standard hand wheel with rotating knob, made of polished anodized aluminium. Hand wheels must not be mounted on the drive shaft when not operating the screw jack.
Brief: Cubic design screw jacks are high quality engineering products for precise lifting, lowering and pivoting of loads, and are, under normal operation, maintenance free. Screw jacks transfer the rotatory movement provided by a handwheel into a linear motion: a vertical lift, in pull or push, or horizontal positioning. They can be used individually or in configurations made up of several screw jacks coupled together through couplings, transmission shafts and bevel gearboxes.
Brief: In case of power failure, screw jacks can be moved manually via a handwheel. Cubic Worm Screw Jack features a comprehensive line of worm gear jacks. These cubic-style worm screw jacks are available in three versions: Translating, Keyed, and Rotating, each with a number of possible configurations and options.
Brief: Screw lifting jack can be single or in combination, can be controlled accurately in accordance with certain procedures to enhance or promote the adjustment of height Motor power can be used directly or can also be manually operated. A hand wheel is a convenient solution for manually operating a jack when using machine screw jacks in intermittent positioning applications.
Brief: A hand wheel is a convenient solution for manually operating a jack when using acme screw jacks in intermittent positioning applications. Acme screw jacks offer positive mechanical action, precise positioning, and uniform lifting speeds. Hand wheels are available in a range of diameters from 5 to 16 inches and can be adapted for use on jacks up to the 20 tons capacity model.
Brief: Because Ball Screw Type Power Jacks and High Lead Screw Type Screw Jacks are not equipped with a self-lock, the input shaft may be reversed by a load, therefore, it is dangerous to use the hand wheel. Must add the locking clamping device when manual ball screw jacks.
Brief: In case of power failure, a screw jack can be moved manually operated via a handwheel or crank handle. You can install digital position indicators on the worm shaft of cubic screw jack if you need more precise position display.
Brief: Complete Stainless Steel Trapezoidal screw jack main components are AISI 304 trapezoidal lifting screw, worm screw, worm gear and gear housing. Worm screw is rotated manually (manual screw jack) with self-locking safety feature. 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. The screw shaft can be operated with a small number of handle rotations.
