As AKSTEKNIK, we produce Bearing Protectors in 2 types: "One-Piece" and "Two-Piece". One-Piece Bearing Protectors are mounted directly to the bearing housings from the very beginning on the production line of the engine, while "Two-Piece Bearing Protectors" are mounted on the shaft block with the help of the metal feet we provide with the product at any desired moment. The picture above shows the appearance of the Two-Piece Bearing Ring at the installation site. Our product is offered to our customers according to customer groups and needs. While our manufacturer and OEM customers generally prefer One-Piece Bearing Ring, our end-user customers prefer Two-Piece Bearing Ring.

The performance of the STA-RING Bearing Protector can be evaluated with the help of a measuring instrument called Voltage Test Detector. In cases where the Bearing Protector is not used, as can be seen in the picture, the number of jumps will be seen on the Voltage Detector in the operating state. The number of these jumps will increase gradually. For example, starting from "0", it will increase to "40-50" numbers after a certain operation. After a very short time, it will be quite possible to see numbers like "400-500" on the Voltage Detector. However, when AKSTEKNIK Bearing Protector rings are used, the Voltage Detector will show the number "0". With this method, we can understand that the bearings are protected effectively and efficiently. As AKSTEKNIK company, we are proud to offer this patented product to the service of all our domestic and international customers. We would be pleased to inform you that we will be pleased to provide information and offers about our product to our customers, valuable engineers and technical staff of various sectors, who are both OEM and end users in their field of activities. 

Nowadays, frequency convector (PWM, VFD drive) has started to be used in the industry in order to reduce the increasing energy costs. This leads to the formation of a new damage which is not well known among the bearing damages. As a result of the dv/dt (voltage / rise rate) that occurs during the operation of the frequency convector, a parasitic capacitor is formed between the stator and rotor of the motor. Therefore, the voltage on the motor shaft increases over time. The shaft currents formed by this gradually increasing voltage want to move away from the system by following the easiest way. The shortest resistance-free path on the system is bearings. Therefore, the shaft currents flow away from the bearings. 

The current path shown in red colour is the capacitive current coupled to the rotor, whose return path passes through the bearings and finally through the ground connection of the motor to ground. This path creates a current that eventually flows through the bearings of the motor, possibly causing bearing damage.
The path shown in green colour shows the capacitively coupled current from the stator windings to the rotor. This path causes damage to the bearing on the pulley side of the motor and to the coupling itself in some coupling types that connect the motor to the load.
The current, shown in yellow colour, flows through the motor casing, motor bearing, motor shaft, coupling, bearing on the pulley side of the motor, earthing of the load and finally earthing of the drive. The current passing through this path has the potential to damage the coupling as well as the motor and the bearing on the pulley side of the motor.

When AKSTEKNIK STA-Ring Bearing Protective Rings are used, the harmful shaft currents indicated above with Red, Green and Yellow Colours are flowed to the ground through the capillary carbon fibre bristles. In this way, a very effective grounding is provided and shaft currents are prevented from damaging the bearings. Thanks to this application you will make in your motorised construction machinery, you will make a significant annual gain. Because the replacement of bearings is both costly and undesirable for industrial companies due to the fact that it will cause work stoppages, both in terms of consumables and production stoppages.  AKSTEKNIK STA-Ring Bearing Protective Rings are a clear and definite solution.

The following steps are generally followed for STA-Ring Installation:
Step 1: Make sure that the surface where the motor shaft and STA-Ring ASF will come into contact is cleaned from paint and similar particles.
Step 2: Centre the STA-Ring ASF Bearing Protector by rotating it from the motor shaft and mark the mounting holes. Drill mounting holes in the housing with a 3 mm drill. Mount STA-Ring ASF to the housing with electrically conductive screws. This is important as the electric current will pass through the screws. Carry out the screwing process in a smooth handling.
Step 3: After the screwing is completed, the process is completed. STA-Ring ASF does not provide grounding of your motor. In order to get efficiency from Sta-Ring ASF, your motor must be well grounded in advance.

Wind turbines are one of the sectors where bearing protective rings have gained importance. Among the bearing protective rings we manufacture, the bearing rings produced for wind turbines stand out both in terms of high quality and special designs. We create custom designs considering factors such as rotation speed, working conditions, and connection points. As a result of these special designs, the brushes can be arranged in double rows or even more. Additionally, we can offer special connection accessories. Our work is carried out according to customer requests and specifications