technical data linear actuator Linispeed Jack Handling
This section describes the general handling of Linispeed Jack.
For details, please refer to Instruction Manuals included with the product.
Maintenance and inspection
- - The screw shaft and reducer section are delivered with grease applied and oil sealed inside. Please install the included pressure vent in the appropriate position before use. Please refer to Table 1 for the brand of grease applied to the screw shaft and oil sealed inside the reducer section at the time of shipment. Grease and oil are also very important in terms of the capacity, lifespan, and efficiency of the jack. Be sure to use the grease and oil specified by our company.
- - Use Table 2 as a guide for the grease lubrication cycle for the screw shaft. Also, refer to Table 3 for the amount of grease to be applied to the screw shaft. To lubricate, move the screw shaft to its maximum stroke, wipe off the old grease, and then apply the grease directly to the screw shaft with a grease gun or brush. After greasing, operate the nut at its full stroke to promote lubrication inside the nut.
- - Use Table 2 as a guide for the oil change cycle for the reducer. The change cycle will vary depending on the frequency of use, conditions of use, etc. Remove the pressure vent attached to the reducer and insert it through the plug hole to the center of the oil gauge. After changing the oil, be sure to tighten the pressure vent securely. Refer to Table 4 for the plug size.
The first replacement should be made after 1000 hours of operation or three months, whichever comes first.
After the second time, replace the filter every 5000 hours or every year, whichever comes first, depending on the operating conditions.
Oil can be easily drained by draining it while it is still hot immediately after operation, but this is extremely dangerous as it can cause burns.
Make sure that the surface temperature of the reducer is below 40 to 50°C before draining the oil.
When replacing the drain oil, we recommend cleaning the inside of the case with the lubricating oil being replaced.
Table 1 Specified oils and fats
| Usage category | Manufacturer | Oil name |
|---|---|---|
| Threaded part | Exxon Mobil | Mobil SHC Grease 681WT |
| Reduction part | Idemitsu Kosan Co., Ltd. | Daphne Alpha Oil TE150 |
*The product names listed above are trademarks or registered trademarks of each company.
Table 2. Grease and oil change cycle
| Frequency of use | Grease Cycle | Oil change cycle |
|---|---|---|
| Ball screw shaft | Reduction part | |
| 1001~ round trip/day | 1 to 3 months | 5000 hours or Every year |
| 501-1000 round trips/day | 3 to 6 months | |
| ~500 round trips/day | 6 months to 1 year |
*The above figures are different from the lifespan of the screw and reducer.
Table 3 Grease application and oil amount
| Frame No. | Application amount | Initial amount |
|---|---|---|
| Screw shaft (per 100mm stroke) | Reduction part | |
| SJ015H | 10～15g | 0.31L |
| SJ030H | 10～15g | 0.49L |
| SJ050H | 20～30g | 1.02L |
Table 4 Plug size
| SJ015H | 1/4″ |
|---|---|
| SJ030H | 1/4″ |
| SJ050H | 3/8″ |
- While using the jack, please periodically check the condition of the thread surface and backlash. When metal powder due to wear becomes visible on the thread surface, it has reached the end of its life. Also, when the backlash of the gear system (play between the input shaft and worm wheel) exceeds a rotation angle of 30 degrees of the input shaft, the gear system needs to be replaced. In either case, continuing to use the jack after the replacement period may result in poor rotation of the screw shaft and input shaft, or even the screw shaft may suddenly fall.
