Open nylon cage bearing is one type of deep groove Ball Bearing without dust seals. It is often used in the mine. has better anti-stuck performance and wider range of temperature than iron cage. In the underground its anti-static performance is also better. It is best cost-effective Bearing For Idler roller. International market generally use TN nylon retainer and TN(TNGH) nylon retainer with glass fiber, liable to break. The selection of open nylon cage is crucial to KA bearing, while the material of nylon cage must be pure and has enough toughness and strength, because the cage will get very soft if it is made of bad material or mixed material, thus to make no anti-stuck performance within the bearing. To get safety certificate for coal mining products must use open Nylon Cage Bearing.
Special: Our KA(Nylon retainer) series bearings Obtained MA certification, safety certificate of approval for mining products (rollers) in China. With good performance of anti-seize and anti-static.
Feature Of Our Nylon Retainer:
1. reinforced nylon retainer, it has good low noise properties and better sliding
characteristics
2. very good corrosion resistance
3. a wide temperature range
4. Product tested by National Coal Science Institute and Provincial Quality Inspection
Center. mine standard in China.
5. Good toughness and strength, good anti-seize performance, constantly used in dusty environment and underground environment.
The design of Ductile crown structure of retainer can effectively remove stuck dust objects
Main Products:
Open Nylon Cage Bearing,Tn Nylon Cage Bearing,Crown Nylon Cage Bearing Shandong Xinkaite Bearing Co., Ltd. , https://www.idlerbearing.nl
The accuracy and reliability of metal detectors for medicines depends on the stability of the frequency of the electromagnetic transmitters. Generally, the working frequency is from 80 to 800 kHz. The lower the operating frequency, the better the iron detection performance; the higher the operating frequency, the better the detection performance of high carbon steel. The sensitivity of the detector decreases as the detection range increases, and the size of the sensing signal depends on the size of the metal particles and the conductivity.
Pharmaceutical Metal Detector Structure A typical metal detection system consists of the following four main components:
1. The detection head detection machine coil or the detection head, built-in "balanced coil", three coils wound on a non-metallic frame or forming device, the coils are completely parallel, the middle coil (transmission coil) through high frequency Current generates a magnetic field. Two coils located on both sides of the middle coil are receiving coils. Since these two coils are identical and maintain the same distance from the transmitter, their induced electromotive force is exactly the same. When these coils are connected in reverse, the electromotive forces cancel each other, thereby forming a "zero output", that is, an equilibrium state is reached. Then, it is poured with cement to ensure that the magnetic field is in a state of dynamic equilibrium when no product passes through, and is not affected by external environments such as temperature changes, vibration, and electromagnetic interference. The product passes through the three coils one after another. If a metal foreign object is contained, the balance of the magnetic field will be broken and an induced current will be generated, thereby detecting various metal foreign materials.
2. Control panel user interface/control panel. Commonly used touch screen type and button type are usually installed directly on the test head. However, if the detection head is too small, or if it is installed in a location where traffic is inconvenient or inaccessible, it can be remotely installed using a connection cable.
3, transmission system transmission system, used to make the product through the opening, the most common transmission device for the horizontal conveyor type, while for different product applications, you can choose the gravity drop type (transmission of powder or particles in the pipeline), horizontal pipeline type ( Liquid and fluid) and plastic guides commonly used in the pharmaceutical industry.
4. Automatic rejection system The automatic rejection system is used to remove any infected product from the production line and is usually installed on the transmission system. There are many different types, including blow type, push rod type, flap type, etc. The type of reject system will depend on the product that needs to be tested.
Four compositional structures of drug metal detector
The principle of the drug metal detector is a central transmitter coil and two equivalent receiver coils. The three coils are housed in a probe. The oscillator emits a high-frequency magnetic field through the transmitter coil in the middle, and is connected to the two receiving coils, but the polarity is reversed. In the case that the magnetic field is free from external interference, the voltage output signals generated by them cancel each other out. Once the metal impurity enters the magnetic field region, the balance will be destroyed, the induced voltages of the two receiving coils cannot be cancelled, and the unbalanced induced voltage is amplified by the control system. The metal detector can detect the presence of metal and generate Alarm signal (metal impurities detected). The system can use this alarm signal to drive automatic reject devices and the like to remove metal impurities from the production line.