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China YOX Load Limiting Type Hydraulic/Fluid Coupling - Reliable Suppliers & Factory for Efficient Power Transmission
⚙ Product Features
- ✓It has the functions of reducing startup shock and isolating torsional vibration.
- ✓It has the overload protection function.
- ✓It has the power-saving function.
- ✓It has the function of slow startup with load delay.
- ✓It has the function of coordinating multi-machine drive.
- ✓It has the characteristics of extending the service life of the motor and the working machine and saving maintenance costs.
- ✓It has the feature of a simple and reliable structure, no special maintenance required, and a long service life.
🔧 Product Maintenance
- 1 The hydraulic coupling operates in the same manner as the motor. It can rotate in either direction, but it is not suitable for rapid and frequent reversing.
- 2 After installation, during the first power-on test run, it is necessary to check whether the coupling operates smoothly, without vibration, and without abnormal noise.
- 3 To ensure safe production, a mesh-shaped heat dissipation protective cover should be installed on the coupling.
- 4 When the prime mover reaches the rated speed, it must start to operate; otherwise, it is necessary to check if there is any jamming in the load. At this time, the machine should be stopped immediately for inspection to identify the cause.
- 5 During operation or shutdown, there must be no leakage from the coupling.
- 6 During continuous operation, the working oil temperature of the coupling should not exceed 90°C; 70°C is preferable.
- 7 After the first 300 hours of operation of the coupling, the working oil should be drained and replaced with new oil (if the crude oil is not deteriorated and filtered, it can be reused). After 3000 hours of operation, the quality of the working oil should be inspected. If the oil quality deteriorates, new oil should be used.
- 8 Regularly check the wear condition of the elastic blocks. If necessary, replace them. If the elastic block is damaged within a short period of time, it is mostly caused by incorrect installation and alignment. Realign it, and if necessary, use a dial indicator to measure and align.
- 9 The fusible plug must not be blocked and cannot be replaced with other items that do not have overheating protection function. When the fusible plug melts, the cause of the oil spraying must be found and the fault eliminated. Reinject the working oil at the specified filling volume, replace the fusible plug with the same specification, or pour in low-melting-point alloy. At the same time, recheck and tighten all the bolts on the coupling circumference.
- 10 Regularly check the installation accuracy of the prime mover shaft and the input shaft of the working machine, and correct it. Do not randomly disassemble the coupling to avoid damaging the seal and balance. Even if disassembled, mark the joints of each component.
📷 Detail Pictures
❓ Frequently Asked Questions
Q What is the maximum allowable working oil temperature for a hydraulic coupling during continuous operation?
During continuous operation, the working oil temperature should not exceed 90°C. A temperature of 70°C or below is preferable to ensure optimal performance and longevity of the coupling.
Q How often should the working oil in a hydraulic coupling be replaced?
The working oil should be drained and replaced after the first 300 hours of operation. Subsequently, the oil quality should be inspected every 3,000 hours. If the oil has deteriorated, it must be replaced with new oil to maintain proper function.
Q What should I do if the fusible plug melts and oil sprays out?
First, identify and eliminate the root cause of the overheating or fault that triggered the melt. Then reinject working oil at the specified filling volume, replace the fusible plug with one of the same specification (or refill with low-melting-point alloy), and recheck and tighten all bolts on the coupling circumference before restarting.
Q Why does the elastic block wear out quickly after installation?
Rapid wear or early damage of the elastic block is most commonly caused by incorrect installation and shaft misalignment. It is recommended to realign the shafts carefully and, if needed, use a dial indicator to achieve precise alignment and prevent premature wear.
Q Can the hydraulic coupling be used for frequent reversing operations?
While the hydraulic coupling can rotate in either direction like the motor it is paired with, it is not suitable for rapid and frequent reversing. Such operating conditions can cause excessive stress and reduce the service life of the coupling.
Q What are the key benefits of using a YOX Load Limiting hydraulic coupling?
The YOX Load Limiting hydraulic coupling offers multiple advantages including reduction of startup shock, isolation of torsional vibration, overload protection, power saving, slow startup with load delay, multi-machine drive coordination, and extended service life for both the motor and working machine — all with a simple, reliable structure that requires minimal maintenance.