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| Rack & pinion jacks load 1,5 t to 10 t (fig.) withself-locking security crank, keeps the charge in every required position - for pulling or pushings. Special versions on request: - different length of rack - different lift - drive shaft to connect several jacks - with internal brake and removable crank |
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Rack & pinion jacks load 0,5 t and 1 t, with self-locking worm gear for lifting, for lowering, adjusting and fixing of mechanical components, devices, machines, etc.. 0,5 t version also available in stainless steel
robust version with milled rack and hardened driving parts, for in- and outdoor applications
Special versions against additional charge:
- an other lift or length
- an other crank version
- an other fixing possibility
- an other surface treatment
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| Roller screw jack provide higher performance compared to ball screw jacks. Ideally suited to applications where a high dynamic load, high accuracy, high speed and a long life are required. |
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Metric and Imperial Ball Screw Jacks designs in translating and rotating screw formats in upright or inverted types are available in capacities up to 500kN ( 50 Ton). 2 gear ratios and 2 screw leads as standard, Options include Pre-loaded ball nut, Anti-rotation (keyed), 6 mounting options including trunnion and double clevis.
The Metric Ball Screw jacks have the extra advantage of an integral safety device as standard. |
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| Series-S high duty screw jacks are a range of metric cubic screw jacks designed to have a higher duty cycle and mounting flexibility over conventional worm gear screw jacks. Typically the duty cycle can be extended by 50%. The higher duty rating has been achieved by improving the design of the jacks worm gearbox. The screw jacks are available in capacities from 25kN to 200kN in both translating and rotating screw configurations. |
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Gear with spindle and support tube for stepless height adjustment for sit/sit or sit/stand work stations
- low priced
- small assembly dimensions
- high speed for adjustment
- in combination with our motor drive KTS 3143 the ideal solution for your height adjustment |
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Gear for stepless height adjustment, mainly for manual sit/sit work stations.
- Ratio 1:1 or 1,33:1
- Glass fibre reinforced plastic housing
- Hardened steel gear cogs
- 1200 N load
- Output spindle for push force only |
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Mechanical actuators (screw jacks) are used in linear motion applications to push, pull, lift or lower loads for actuation and precise positioning purposes.
Screw Jacks are available from Power Jacks in both metric and Imperial (inch) designs in load ratings from 5 kN to 3500 kN with machine screw or ball screw drives in Cubic, Single Face (Classic) or Stainless Steel housings.
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Mechanical actuators (screw jacks) - High efficiency Series.
Acme or ball screw.
Load capacity from 5 kN to 350 kN
Linear speed up to 150 mm/sec
Input speed up to 3.000 r/min
Duty cycle up to 40% over 10 min at 25°C
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With the "Screw Jack Building Block System", ZIMM offers a versatile program for the electromechanical adjustment of linear movements.
The designer finds ideas and solutions for lifting capacities from 0.25 kN to 1000 kN in the modular building set. There are numerous applications, for example, theatre and stage construction, plants for the production of sheet steel and steel pipes, wood working machines, plastics processing machines, textile machines, assembly equipment in the automobile and aircraft industries, food and beverage production equipment as well as packaging machines. |
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| Stainless steel screw jacks (mechanical actuators) offer corrosion protection for linear motion applications in arduous environments. Designs are available with operating capacities from 10kN to 100kN and up to 300kN sustaining capacities. Either completely stainless steel units are available or hybrid units combining stainless steel and plated materials for a value engineered solution. All the design possibilities of the standard range are available including 2 gear ratios, anti-backlash, anti-rotation (keyed) and 6 mounting options. |
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Worm Gear Screw Jacks are available from Power Jacks in both metric and Imperial (inch) designs in load ratings from 5 kN to 3500 kN with machine screw, ball screw or roller screw drives in Cubic, Single Face or Stainless Steel housings.
The screw jacks can have feature such as anti-backlash, anti-rotation, secondary guides, rotation monitors, wear indicators, safety nuts and more.
For full details visit Power Jacks website at www.powerjacks.com
The website contains free downloads of detailed catalogues, drawings and maintenance manuals.
The 3D CAD Product configurator allows a user to specify a screw jack in 3D on-line then download the model in 3D or 2D CAD formats (over 20 available). |
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Mechanical Screw Jack European Heavy Series
SEP (50-1500KN)
Mechanical screw jack with housing made of Grey Cast Iron (SEP 1000 & SEP 1500 are made of welded carbon steel).
7 different sizes (SEP50, SEP100, SEP200, SEP300, SEP500, SEP1000, SEP1500).
2 different reduction ratios for each size.
Lifting/thrust capacity up to 1500KN.
Lifting/thrust speed up to 9000mm/min.
T version, featuring Trapezoidal spindle (self-locking).
S version, featuring Ball Screw spindle (high efficiency).
Grease lubricated.
Strong industrial design provides maximum performance together with highest reliability, to face most difficult applications in harsh and severe environments.
Wide range of standard accessories/features.
Special execution on request, please contact Setec Group Italy.
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Mechanical Screw Jack European Light Series
SEL (2,5-100KN)
Mechanical screw jack with housing in Aluminium alloy.
5 different sizes (SEL5, SEL10,SEL25, SEL50, SEL100).
3 different reduction ratios (1/5, 1/10, 1/30).
Lifting/thrust capacity up to 100KN.
Lifting/thrust speed up to 15200mm/min.
T version, featuring Trapezoidal spindle (self-locking).
S version, featuring Ball Screw spindle (high efficiency).
Grease lubricated.
Modular and compact cubical design provides maximum adaptability to each specific application.
Wide range of standard accessories/features.
Special execution on request, please contact Setec Group Italy.
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Ball Screw Jack.
Stainless Steel execution available.
Capacities from 1 Ton to 30 Ton.
Stroke on request.
Body with Base or Pivoting feature.
Upright or Inverted Screw.
Translating or Rotating Screw.
Motor applications. |
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Joyce/Dayton - Established 1873
Joyce Ball Screw Jacks feature a ball nut with integral ball bearings that recirculate along the surface of the ball screw. The significantly reduced friction between the ball nut and screw results in greater efficiency, with up to 2/3 less input torque required to move the load than a similarly rated machine screw jack.
Compared to Machine Screw Jacks, Joyce Ball Screw Jacks
- Require less motor horsepower
- Allow higher travel speed
- Provide an extended duty cycle
Joyce Ball Screw Jacks are available in translating screw or rotating screw (keyed for traveling nut) designs. Translating screws are available with threaded, load pad, clevis or plain ends. Options include limit switches, encoders, geared potentiometers, direct drive and reducer mounts, and protective boots. Joyce Ball Screw Jacks are ideal for single or multiple jack systems.
Unlike Machine Screw Jacks, Ball Screw Jacks are not self-locking. Because they will lower under load, a brake motor or other external braking mechanism is required.
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JW series screw jack overview:
1.JWM (Trapezoid screw)
JWM (trapezoidal screw) is suitable for low speed and low frequency. Main components: Precision trapezoid screw pair and high precision worm-gears pair.
- Economical: Compact design ,easy operation, convenient maintenance.
- Low speed, low frequency: Be suitable for heavy load, low speed, low service frequency.
- Self-lock: Trapezoid screw has self-lock function, it can hold up load without braking device when screw stops traveling.
Note: Braking device equipped for self-lock will be of malfunction accidentally when large jolt & impact load occur.
2. JWB (General ball screw)
JWB (General ball screw) is suitable for high speed, high frequency and excellent performance.Main components: Precision ball screw pair and high precision worm-gears pair.
- High efficiency: Rolling friction improve efficiency greatly, only a little drive power can generate great thrust force.
- High speed:Rolling friction speed up travel of screw easily.
- Lifetime longer: High precision ball screw can make JWB's lifetime longer by 3 times comparing with JWM.
Note ; Braking devices or motor with braking devices are necessary when choosing JWB
Ability of load: 1.96-980kN
Power: 0.25-21kW |
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Steel Screw Jack.
Capacities from 0.5 Ton to 150 Ton.
Stroke on request.
Body with Base or Pivoting feature.
Upright or Inverted Screw.
Translating or Rotating Screw.
Motor applications.
Bevel Gear and Pinion Screw Jack.
Size from 5 ton to 50 ton.
Ball screw models.
Anti-Rotation device.
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* Duff-Norton offers a complete line of both standard and custom engineered machine screw actuators for applications up to 350 tons.
* Duff-Norton Ball Screw actuators come in many standard models, or can be custom designed for any application up to 50 tons.
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Joyce/Dayton - Established 1873
Versatile Joyce Machine Screw Jacks lift and precisely position all kinds of loads from 250 lbs. to 250 tons. Upright or inverted, these precision jacks operate at full capacity whether the load is in tension or compression. WJ series single lead jacks are self locking under full lifting capacity, while DWJ double lead series jacks offer increased travel speed. Heat treated alloy steel worm shafts, aluminum/bronze worm gears and tapered roller or ball bearings provide rugged reliability.
Double extended worm shafts are standard. Joyce screw jacks come in translating screw, rotating screw (keyed for traveling nut) and keyed designs. All screw jack designs can be fitted with a protective boot. Jacks are available with one of four standard screw ends or special ends to meet your requirements.
An optional anti-backlash feature compensates for thread wear, assuring minimum play between lifting screw and worm gear for smooth, precise operation. Jacks equipped with the antibacklash feature are rated at full capacity under static conditions. For jack capacity under dynamic conditions please contact Joyce/Dayton.
Joyce/Dayton will custom design jacks to meet special requirements.
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10 models with lifting capacities from 5 to 500 kN.
All versions are designed for both tensile and compressive loads and will operate in any orientation or mounting position
High and low speeds due to two different ratios
Cubic shape of housing allows ideal attachment
Easy synchronization of several worm gear screw jack units
Complete range of motors and accessories |
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| ZZ elevation screw gears are the ideal drive element for linear movements. With our comprehensive and functional range of accessories you can extend your plant into a complete system. In this we will individually advise and carry out the project design work on the lifting equipment exactly according to your requirements. Due to the fact that we manufacture the complete range of components ourselves we are still able to offer the well-known ZZ quality in this area also. |
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Stainless Steel Screw Jack.
Full Stainless Steel construction.
Capacities from 0.5 Ton to 150 Ton.
Stroke on request.
Body with Base or Pivoting feature.
Upright or Inverted Screw.
ranslating or Rotating Screw.
Motor applications. |
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Steel Screw Jack.
Capacities from 0.5 Ton to 150 Ton.
Stroke on request.
Body with Base or Pivoting feature.
Upright or Inverted Screw.
Translating or Rotating Screw.
Motor applications. |
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| Screw jack is one of the most used and cheap mechanism used for a wide variety of uses as lifting or moving any kind of load, even unbalanced ones. It can be used individually or in groups so to operate in perfect synchronisation. BP RIDUTTORI screw jacks are irreversible and don't need additional locking system. They are fully produced in our factory, and they guarantee high quality standard. The case is made of spheroidal cast iron or aluminium and the worm gears is made of special UNI 7816 18NCD5 iron, grounded on both the thread and shaft. It's possible to produce every NON STANDARD version to meet our customer request. |
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Screw jacks/Motor screw jacks for ball screws.
Exact ratio - 1/5.
Input torque from 22 Nm to 331 Nm.
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Mechanical worm-gear screw jacks.
Capacities from 500 to 100.000 Kg.
Spindles over 6 meters long.
Screw jacks complete with motors.
Customized models available.
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| The mechanical actuators High Performances of series VMP are particularly adapted to the most demanding applications, requiring strong loads with high speeds and important races. With Trapezoidal screw 1,2 or 3 nets, or with ball screw, they are available out of relocating screw (VMP-A) or revolving screw (VMP-B). The lengths of screw are adapted to each application. - 9 sizes from 500 to 50000 daN - - Many options such as covers, kneecaps, plates, pivots, selflocking nuts, detection of wear, race ends, encoders, potentiometers of recopy, etc... - All types of motorization: Three-phase current - Single-phase current - D.C. current - Brushless. |
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| The mechanical actuators of series VME Eco are particularly adapted to the applications requiring a good performance ratio/price. With Trapezoidal screw 1,2 or 3 nets, or with ball screw (only on model with revolving screw), they are available out of relocating screw (VMP-A) or revolving screw (VMP-B). The lengths of screw are adapted to each application. - 6 sizes from 500 to 20000 daN - - Many options such as covers, kneecaps, plates, pivots, selflocking nuts, detection of wear, race ends, encoders, potentiometers of recopy, etc... - All types of motorization: Three-phase current - Single-phase current - D.C. current - Brushless. |
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