Conventional worm jacks have a structure in which a ball nut is placed on top of the worm wheel.
Linispeed Jack has a ball nut placed inside the worm wheel, which allows for a low-floor structure equivalent to the height of the ball nut.

With conventional worm jacks, the maximum speed is around 125 mm/s, although this depends on the frame number.
Furthermore, when used near maximum speed, the thrust drops to less than half of the basic capacity, so a conventional 5-ton frame can only produce about 1.5 tons of thrust at 125mm/s.Even at 200mm/s, Linispeed Jack 's 5-ton frame thrust remains at 5 tons.

Linispeed Jack has a larger worm center distance than conventional models.
By increasing the center distance, if the screw lead and worm speed ratio are the same, the surface pressure applied to the worm tooth surface for the same thrust (input torque) can be reduced.
Since the surface pressure is reduced, heat generation is suppressed and high-speed operation is possible even with allowable thrust.

For the same reason as in the previous section, heat generation is suppressed, so if two 5-ton frames are used, Linispeed Jack will generate less heat and require less downtime. This results in a higher Percentage duty cycle than conventional types.

It uses a more high performance screw than Ball screw used in general worm jacks.
This means that even with the same screw diameter, the lifespan is longer.
The 3-ton frame of Linispeed Jack is approximately 8 times the capacity of a 5-ton frame conventional worm jack, and approximately 2 times the capacity of a 10-ton frame.

Due to confidentiality reasons, we cannot disclose the details, but by reviewing the materials used in comparison with ordinary Ball screw, we have achieved an expected travel distance of more than 10 times that of conventional jacks with the same frame size.

With worm gears, as the input rotation speed increases, the allowable torque of the output shaft decreases.
This also reduces the allowable thrust of the worm jack.
Linispeed Jack use a worm gear with ample allowable torque on the output shaft, so there is no limit to the allowable thrust.

First, the worm center distance is larger than that of conventional models, which increases the stirring resistance of the lubricating oil and the sliding resistance of the oil seal.
Another reason is that it is driven at high speeds.
Rotating at high speeds will increase vibration.
Linispeed Jack is designed for a maximum input of 3000 r/min. To suppress vibration at this speed, the bearing preload on the input shaft is increased.

It is possible to link multiple units using couplings or Miter Gear Box.
However, when connecting Linispeed Jack in series, please consider the allowable input shaft torque when determining the number of linked jacks.

Linispeed Jack do not have a self-locking function.
The screw uses an efficient Ball screw, and the worm gear has a reduction ratio of 1/6 to 1/8, so self-locking functionality cannot be expected.
Please use it in combination with a motor with a brake.

Since Linispeed Jack is designed for high-speed operation, the air flowing in and out of the jack using a standard bellows may not be able to keep up with the expansion and contraction, causing the bellows to burst.
This is achieved by using bellows with air holes to allow the air inside to escape quickly.

The gears of Linispeed Jack are oil lubricated as standard.
The screws are lubricated with grease.

It is possible to use grease lubrication, but the lubricity will decrease, so it cannot be used at the maximum speed or allowable frequency.

We can provide low-dust grease coating, Raydent treatment, and anti-rust plating on the input shaft.
However, thrust may be limited.

Select Percentage duty cycle table that you would like to use as a reference based on the model number and ambient temperature.
Select the appropriate graph depending on the input rotation speed.
Depending on the working load, the allowable Percentage duty cycle is calculated at the intersection with the graph.

There are 176 size servo motors that can be combined, so please contact us.
Servo motors larger than this size should be installed separately due to their weight.