316 stainless steel deviation switch SBN-PXQ-8T3 with installation screws

316 stainless steel deviation switch SBN-PXQ-8T3 with installation screwsBeing able to use in strong acid and high environmental conditions can prevent damage to expensive conveyor belts and prevent further industrial accidents and personal injuries. The two-stage deviation switch is a protective device in the safe operation of the conveyor system. It is used to detect the degree of deviation of the conveyor belt during operation, issue an alarm, and automatically trigger an emergency stop. Using a deviation switch can prevent damage to expensive conveyor belts and prevent further industrial accidents and personal injuries. The two-stage deviation switch is a protective device in safe operation conveying systems, widely used in steel plants, thermal power plants, cement plants, chemical plants, ports, etc.

1、 Product characteristics and installation requirements
The SBN-PXQ-8T3 type deviation switch adopts a 316 stainless steel shell, which has excellent corrosion resistance and is suitable for harsh environments such as chemical, food, and marine industries. The adjustable range of the product's action angle is 20 ° -45 °, with a contact capacity of 5A/250VAC and a protection level of IP65. Attention should be paid during installation:
1. The flatness deviation of the bracket installation surface is ≤ 0.5mm
2. The switch axis should be perpendicular to the direction of belt operation
3. Keep the distance between the action rod and the edge of the belt at 50-100mm

2、 Selection criteria for matching screws
According to the technical parameters provided by the 1688 platform supplier, the matching screws must meet the following requirements:
1. Material matching: 316 stainless steel screws (M8 × 25 specification) must be selected to form a complete anti-corrosion system with the switch body. Ordinary 304 stainless steel screws may experience crevice corrosion in chlorine containing environments.
2. Mechanical properties: The tensile strength of the screw should be ≥ 500MPa, and the yield strength should be ≥ 210MPa to ensure that it does not loosen under vibration environment.
3. Anti loosening treatment: It is recommended to use anti loosening nuts with nylon locking rings or in combination with spring washers.

3、 Installation operation specifications
1. Preprocessing stage:
-Clean the installation contact surface with isopropanol
-Check if there are burrs in the threaded hole (can be trimmed with an M8 tap)
-Prepare a torque wrench (with a set value of 15N · m)

2. Installation steps:
① Attach the switch base tightly to the installation surface, paying attention to the flatness of the sealing gasket
② Pre tighten all screws by hand first to ensure no deviation
③ Tighten twice in diagonal order (50% torque first, then 100%)
④ Use a dial gauge to check the flatness of the switch base (≤ 0.1mm)

3. Debugging points:
-Wear resistant rubber sleeves should be installed at the contact part between the action rod and the belt
-When simulating deviation testing, reliable action should be taken when the belt offset reaches 15% of the bandwidth
-Regularly check the tightening status of screws (it is recommended to conduct monthly inspections)

4、 Common problem solutions
1. Rust treatment of screws:
When brown rust spots are found on the screws, 316L stainless steel special rust removal paste should be used immediately for treatment, and new anti loosening washers should be replaced. Do not use a wire brush for cleaning to avoid damaging the passivation film.

2. Vibration loosening prevention:
In high-frequency vibration situations, it is recommended to use the following three methods to enhance the anti loosening effect:
① Apply Loctite 243 thread locking agent to the threaded area
② Tighten the top with double nuts
③ Replace with all metal locking nuts

3. Sealing performance optimization:
For humid environments, a butyl rubber sealing cap (specification M8-9.5) can be added to the screw head, or an appropriate amount of PTFE tape can be wrapped around the threaded area.

316 stainless steel deviation switch SBN-PXQ-8T3 with installation screwsIt is a protective product in conveyor belt automation. Can be used for underground and cableway support of belt conveyors; Ship loading and unloading system; Stacking/retrieval conveyor; Tilt and shuttle conveyors; Cranes, excavators, and boom limit devices; Skirt feeder/conveyor; The heavy-duty limit switch detects the deviation of the tape and is a protective device for automatic alarm and shutdown of the tape machine control.