Technical Data Linear actuator Linipower Jack Handling
Mounting
Jack mounting surface
The mounting surface of the jack is painted for rust prevention purposes. If painting is not required on the mounting surface, please contact us.
Mounting Direction
It is safer to use the lifting type for push-up loads and the suspension type for hanging loads.
Since jacks have an open structure, grease or oil separated from grease may splatter or drop. Prepare oil pans or the like. Especially in the case of using a jack for suspending, grease may run down the screw shaft.
Mounting Direction
Tighten bolts into the 4 mounting holes in the gear case. (No mounting bolts provided. )
See Table 1 for bolt sizes. Strength class 8.8 or 10.9 bolts are usually used for mounting.
Use strength class 10.9 or higher when load applies directly to the mounting bolts as in Fig. 1.
Table 1 Mounting bolt size
| Model No. | Mounting Hole | Bolt size |
|---|---|---|
| JW002 | 4-Φ7 | M6 |
| JW005 | 4-Φ7 | M6 |
| JW010 | 4-Φ9 | M8 |
| JW025 | 4-Φ11 | M10 |
| JW050 | 4-Φ18 | M16 |
| JW100 | 4-Φ22 | M20 |
| JW150 | 4-Φ22 | M20 |
| JW200 | 4-Φ26 | M24 |
| JW300 | 4-Φ33 | M30 |
| JW500 | 4-Φ42 | M39 |
| JW750 | 4-Φ42 | M39 |
| JW1000 | 6-Φ42 | M39 |
Fig. 1
※A suspending load together with a self weight of the jack are applied on the mounting bolt as a tension load.
Installing Motor, Reducer
When installing a motor and reducer unit in addition to the jack body, prepare a robust counter making allowance for a safety factor to prevent alignment accuracy at installation from being reduced even if the maximum load is applied.
Make sure that the transmission shaft connected to the input shaft is aligned accurately. (Fig. 2 )
Using a floating shaft may result in malfunction due to vibration depending on rotation speed, therefore, sufficiently consider rigidity of the shaft and backlash of the coupling.
Fig. 2
Shaft End
When attaching the end fitting to the end of the screw shaft, apply an adhesive agent to the end of screw shaft to prevent a loosening.
Rotating torque acts on the screw shaft and the end fitting will fall off, so please do the following.
[Tightening Agents ]
Use the following brands or equivalent to prevent screws from loosening.
Read instructions and safety precautions provided with each product before applying.
Tightening Agents
| Company name | Brand |
|---|---|
| Nihon Lock Tight | #262、271 |
| Three Bond | #1307N |
[Fixing with set screw ]
After tightening the end fitting, fix with the attached set screw (hexagon socket head screw) as a locking device.
Prevention of screw shaft rotation
Rotating force is generated on the screw shaft (travel nut in the case of travel nut type) with thrust, therefore, rotation prevention is required. Screw rotation torque at the basic capacity is described in the standard specification list. When operating without a guide at the end, or when pulling a rope or chain with a sheave or sprocket, use the rotation prevention type (symbol M).
JWH (high lead ball screw type) rotation prevention type is available as special models, so please contact us.
However, the rotation prevention type cannot be manufactured for the travel nut type, therefore, provide a rotation prevention mechanism on the device.
Setting the Limit Switch
Take jack coasting amount into consideration to set the stroke adjusting limit switch.
The amount of coasting varies depending on the installation condition and the weight of the object to be transported, so please allow for the maximum amount of coasting. Also, install a mechanical stopper within the stroke range in case of emergencies.
Setting the Position Detection Unit
An optional position detection unit (internal LS, potentiometer or rotary encoder) is not factory adjusted for its stroke. Make sure to adjust stroke prior to use. Control units such as the potentiometer and rotary encoder generate various signals by measuring the rotation number of the input shaft. Do not allow the screw shaft (nut in the case of the travel nut) to rotate after adjustment because the setting will deviate if the screw shaft is rotated with the input shaft fixed.
When adjusting the internal LS, operate the jack manually or by inching with sufficient care so as not to exceed the stroke range of the jack. If the jack exceeds its stroke limit, the screw shaft may fall off or the bellows may be damaged.
Horizontal or inclined use of jack with bellows
When using a jack with bellows in the horizontal or inclined direction (including use with swing), the screw shaft may catch the bellows, and damage the bellows, or result in failure of the jack. So special type will be required.
The X dimension (MIN and MAX values) of a jack with bellows may become longer or the bellows outer diameter may become larger.
Please contact us if you need to confirm dimensions before purchasing.
Travel nut type with bellows is available as a special type, so please contact us.
Notes
- ⚠ (1)Jacks that range under the basic capacity of 49.0 kN {5tf} are provided with screw covers made of hard vinyl chloride pipe. Never suspend or carry a jack by use of the screw cover, which is dangerous.
- ⚠ (2)Be certain that the jack rating exceeds the maximum possible stroke. If the stroke capacity is exceeded, the shaft may disengage from the unit or fail to function. JWM (trapezoidal screw type) is not equipped with a fall stop, therefore, if the stroke range is exceeded, the screw shaft falls. JWB (ball screw type) and JWH (high lead ball screw type) are equipped with shaft and stopper which is designed only to prevent the screw from falling out during installation. While installing, take caution so that the screw shaft does not rotate by its own weight and become disengaged. If falling out is unavoidable, use a non-rotating type (with a rotation prevention mechanism).
- ⚠ (3)Do not manually operate the JWB (ball screw type) and JWH (high lead ball screw type) from the input shaft while a load is applied. The input shaft may be rotated by the load, which is dangerous. When JWB (Ball Screw Type) and JWH (High Lead Ball Screw Type) are used in the vertical direction, the jack may be reversed by the load because of its excellent efficiency. Never perform manual operation.
- ⚠ (4)Do not press stop under any circumstances. This may cause critical damage to jacks.
- (5)For equipment such as food manufacturing machines that does not tolerate oily air, install an oil pans or other damage prevention device to prevent grease from splashing or falling.
- (6)To install a screw shaft or cover to the base, avoid drilling large holes so as not to reduce the surface area of contact between the jack and the base.
- (7)Make sure that the load applied to the jack is coaxial with the direction of the screw shaft of the jack. If the acting direction or position is inappropriate, bending load or lateral load will be applied to the jack, which may cause damage. (Fig. 3 )
For side load, make sure to use guides so the load or bending momentum do not apply directly to the jack. 。
Fig. 3
