Limit Switch LX10 - Reliable Protection for Crane Mechanisms | China Suppliers & Factory with IP44 Rating
Advantage
All products of the company can be customized for production according to user usage scenarios.
Working conditions
The travel switch can work reliably under the following conditions:
- The altitude does not exceed 1000m.
- The ambient medium temperature should not exceed +40℃ and not be lower than -30℃ (when the temperature is lower than -15℃); the relative humidity of the air should not be higher than 85%.
- The friction parts should be coated with non-freezing lubricating oil.
The limit switch is suitable for working under the following conditions:
- In an environment containing gas vapor or dust that corrodes metals and insulation.
- In an environment containing conductive dust.
- Places with severe vibrations and violent ups and downs.
Classification
The travel switch is divided into six types according to the type of operating arm:
- LX10-1□ travel switch adopts single roller lever operating arm, which is used for translation mechanism with small inertial travel.
- LX10-2□ travel switch has double roller fork lever operating arm, which is used for translation mechanism with large inertial travel.
- LX10-3 mouth type travel switch with a heavy hammer load lever operating arm, used to limit the travel of the lifting mechanism.
Technical Data
The rated current, rated voltage, current category and relevant technical parameters of the limit switch are shown in Table 1.
Table 1
| Voltage | Rated Current | Closing current | Breaking current | ||
|---|---|---|---|---|---|
| Inductive load | Resistive load | ||||
| AC | 380 | 10 | 0.8 | 10 | 10 |
| DC | 220 | 0.15 | 1 | 2 | |
The switching frequency of the travel switch shall not exceed 150 times per hour.
The mechanical life of the travel switch is not less than 1,000,000 times at an operating frequency of 400/hour.
The maximum speed of pushing the switch operating arm shall not exceed the requirements of Table 2.
Table 2
The mechanical life of the travel switch is not less than 1,000,000 times at an operating frequency of 400/hour.
The maximum speed of pushing the switch operating arm shall not exceed the requirements of Table 2.
| Model | LX10-11-12 | LX10-21-22 | LX10-31-32 |
|---|---|---|---|
| Speed m/s | 150 | 100 | 25 |
Construction Introduction
The casing of the travel switch is made of different materials due to different protection forms. The protective casing is made of steel plate, and the waterproof casing is made of cast iron. Its appearance is shown in Figure 1.
Figure 1: Appearance of the travel switch housing
A contact group (2) is installed in the travel switch housing, and the moving contact and the stationary contact thereof drive the cam on the switch shaft (4) to open and close the contacts as the operating arm (3) rotates. The positioning of the operating arm is achieved by means of a positioning member (5), a positioning spring (6), a positioning lever (7) and a roller (8).
Use and maintenance
The closing condition of the contact can be changed by changing the position of the cam on the shaft. When modifying, the bearing sleeve on the housing must be removed first, then the shaft is pulled out and the cam position is changed. The closing table of various types of stroke opening magnets is shown in the figure.
Frequently Asked Questions (FAQ)
Can the travel switch products be customized?
Yes, all products of the company can be customized for production according to the user's specific usage scenarios.
What are the environmental limits for reliable operation?
The switch operates reliably at altitudes under 1000m, temperatures between -30℃ and +40℃, and relative humidity not exceeding 85%. Non-freezing lubricating oil should be used on friction parts.
How are the different models classified by operating arm?
They are classified into types like LX10-1□ (single roller lever for small inertial travel), LX10-2□ (double roller fork lever for large inertial travel), and LX10-3 (heavy hammer load lever for limiting lifting travel).
What is the mechanical life and switching frequency of the travel switch?
The mechanical life is not less than 1,000,000 times at an operating frequency of 400/hour, and the switching frequency should not exceed 150 times per hour.
How do you adjust the contact closing conditions?
The closing condition can be changed by adjusting the cam's position on the shaft. First, remove the bearing sleeve on the housing, pull out the shaft, and then reposition the cam.