Product Info Linear actuator
Tsubaki's Linear Actuator includes electric cylinders and jacks that use high-quality in-house screws, and our original Zip Chain-driven Zip Chain Actuators.
Both the screw mechanism and the Zip Chain mechanism can be used in a wide range of applications such as high-speed and high-frequency operation and operation that requires high accuracy by making the best use of the features of the product.
※Zip Chain mechanism is our original technology in which two chains interlock like a zipper to form a single, strong column that can be used by 'pushing and pulling'.
Contents
Linear actuator Related information
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Selection
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Data
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Operation
Types of linear motion mechanism
Zip chain mechanism
- High speed
- high-frequency
- High durability
- Compact
This mechanism uses Tsubaki original “Zip Chain” technology.
It is excellent in compactness and has the features of high speed, high frequency, and durability required for high-tact operation.
Two chains are interlocked to form a single column, enabling push-pull operation.
It is named Zip Chain as it engages like a zipper.
(Click here for a special website on the Zip Chain Mechanism. )
Ball screw mechanism, trapezoidal screw mechanism
- high-frequency
- Large allowable load
- Low noise
Ball screw mechanism
This mechanism is designed to operate at high efficiency by placing a steel ball between the screw shaft and nut to create rolling friction.
Compared to trapezoidal screw mechanisms, it is suitable for high-speed and high-frequency applications, making it suitable for assembly lines and other applications where productivity is required.
In addition, its high efficiency allows the drive source to be made compact.
The use of highly reliable internally manufactured ball screws makes it possible to predict operating life.
A ball screw with a longer lead per revolution is called a high-lead ball screw, which can achieve higher speeds at the same input rotation speed as a normal ball screw.
Trapezoidal screw mechanism
This mechanism operates by sliding friction between the screw shaft and nut, and is suitable for low-speed, low-frequency operation such as maintenance applications.
It has self-locking features not found in ball screw mechanisms, enabling load retention.
It is also economical due to its simple structure.
Tsubaki Linear actuator product line
| Electric cylinder ：Power Cylinder | screws jack ： Linipower Jack |
Ball screw lifting unit ： Linispeed Jack |
Chain Meshing Type Actuators ： Zip Chain Actuator |
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| Type of mechanism | Ball screw Trapezoidal Screw |
Ball screw High Lead Ball Screw |
Trapezoidal Screw | Ball screw | Zip Chain |
| Purpose | Load push-pull | Load push-pull | Load retention | Load push-pull | Load push-pull |
| Features | Integrated motor for easy wiring Clean environment |
Various screw types can be selected | High speed, high frequency, low floor, long life | High speed, high frequency, low floor, and long life that outperforms other mechanisms | |
| Thrust | Maximum 490kN | 4.90kN～980kN | 1.96kN～980kN | 15kN～50kN | 400N～2000N |
| Stroke | Maximum 2000mm | Maximum 2000mm | Maximum 1500mm | Maximum 2000mm | |
| Speed and operation frequency | Maximum speed ：333mm/s Percentage duty cycle ：50%ED※1 |
Max. screw shaft speed ： 50～120mm/s※2 Allowable load hourly rate ： 30%ED |
Max. screw shaft speed ： 40mm/s Allowable load hourly rate ： 20%ED |
Max. screw shaft speed ：200mm/s Allowable load hourly rate ：100%ED※3 |
Maximum speed ：1000mm Percentage duty cycle ：100%ED |
| Application examples |
Tilting device 
Stopper (link mechanism) |
Table lifting 
Rolling roll positioning |
Traversa arm lift 
Pick-up robot lifting |
Stacking and dismounting 
Pallet lifting |
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- ※1 For ECO series servo type
- ※2 Varies depending on screw type
- ※3 Varies depending on conditions
Linear actuator product list
This screw jack consists of a ball screw or trapezoidal screw and a worm gear.
A screw jack is a linear motion mechanism that moves the screw shaft back and forth by converting the rotation of the drive machine into thrust force through a screw/nut mechanism.
Unlike cylinders whose purpose is to push or pull a load, these cylinders are mainly used for holding a load, such as lifting/lowering and positioning objects to be transported.
Tsubaki Linipower Jack uses a built-in worm gear to lifting/lowering a screw, and can be operated simply by connecting it to a drive motor.
Multiple units can be interlocked using couplings or miter bevel gearboxes.
We also offer a variety of types and specifications as follows, and provide you with a Linipower Jack, which "reaches the needs of your business."
- ・Travel Nut Type that requires no pit installation because the nut raises and lowers as the screw rotates
- ・Three types of screws: ball screw (high speed, high frequency), high-lead ball screw (ultra high speed, high frequency), and trapezoidal screw (low speed, load retention)
- ・Low dust generation type suitable for clean rooms, rustproof stainless steel screw type for screw shafts
JWB (Ball screw type )
Model No. JWB～
JWB (ball screw type) is a screw jack with rolling friction for energy-saving operation.
- ・Major components include an accurate ball screw and a high-precision worm gear.
- ・High Efficiency ：
High efficiency due to the ball screw and large thrust can be obtained with a small driving source. - ・High-Speed ：
High-efficiency, high-speed operations can be realized compared to the trapezoidal screw type. - ・Longevity ：
Using the highly-reliable ball screw allows for a long operating life. - ※Self-locking is not provided, so a brake unit is required.
Basic Capacity kN
4.90～980
Screw type
Ball screw
Stroke mm
100～2000
JWH (High lead ball screw type )
Model No. JWH～
JWH (high-lead ball screw type) is a screw jack that uses a high-lead ball screw to achieve even higher speeds at the same input rotation speed as JWB type. (up to 4 times faster)
- ・The primary components are the high lead ball screw and precision worm gear.
- ・Higher Operating Speed ：
With the highly-reliable high-lead ball screw used, a maximum screw shaft speed of 7.5m/min is possible. - ・Low Noise ：
Requires less input rpm at the drive and reducer units to run at the same speed as the JWB (ball screw type), enabling quiet jack operations. - ※Self-locking is not provided, so a brake unit is required.
Basic Capacity kN
9.80～196
Screw type
High Lead Ball Screw
Stroke mm
100～2000
JWM (Trapezoidal screw type )
Model No. JWM～
JWM (trapezoidal screw type) is a standard type screw jack suitable for low speed and low frequency.
- ・Main components include an aligning trapezoidal screw and a high-precision worm gear.
- ・Economical ：
Simple and compact structure makes this type economical. - ・Low speed ・Infrequent operation ：
Ideal for low-speed, low-frequency applications due to sliding contact of the trapezoidal screw. - ・Holds heavy loads ：
The trapezoidal screw thread has a self-locking feature in terms of calculation and load retention is possible.
※In situations where the self-locking function will not work due to vibration and shock. - ・Stainless steel screw type is also available. ：
For two models, JWM025 and JWM050, the austenitic stainless steel made screw shafts have been standardized. - ・Left hand screw type is also available. ：
The left hand type has same input direction of rotation, but moves in a direction opposite of the right hand type.
Basic Capacity kN
1.96～980
Screw type
Trapezoidal Screw
Stroke mm
100～2000
Please refer to the following documents for details on the use of each series.
Basic Knowledge of Screw Jacks
Construction
Ball screw type
Trapezoidal screw type
It consists mainly of the following elements
- Input shaft ：
This shaft is connected to a drive source such as a motor and is usually threaded with a worm gear. Torque is transmitted to the worm wheel via this worm. - Worm Wheel ：
Receives torque from the worm and increases torque while decelerating. - Nut ：
It is integrated with the worm wheel and transmits the torque amplified by the worm and worm wheel to the screw shaft (ball screw or trapezoidal screw). - Screw shaft ：
Torque transmitted from the nut is converted into linear thrust force through the threads.
