Aug. 18, 2022
A common frustration we hear from equipment users turning to us for assistance is that their universal joints don't hold up as expected. Low quality or poorly designed joints can result in loss of usefulness, partial machine malfunction or complete failure. Below are some common bad u joint symptoms production and maintenance associates might encounter:
Depending on the level of humidity in the environment, components can erode over time, even without exposure to harsh substances.
Solution: Stainless Steel Universal Joints
Various grades of stainless steel joints can deliver moderate to extreme corrosion resistance. When selecting the appropriate grade, factors such as welding, machinability and strength must be taken into consideration.
Friction And Heat Generation
Pin and block universal joints shaft cross often used in industrial applications operate with friction between the component surfaces. Without proper lubrication, this friction can generate excessive heat and overheating at higher speeds. Increased abrasive wear between the moving parts can result in backlash over time.
Solution: Proper lubrication helps resolve these issues. Pin and block joints can be outfitted with lubricant retaining boots or kept lubricated by oil drips. Needle-bearing joints can be pre-lubricated and enable continuous operation at high RPM while reducing friction and backlash.
Contamination of the joint components by debris is a frequent cause of mechanical wear. Dust can be trapped between the moving parts and create grooves on the surface over time.
Solution: Protective boot covers and lubrication
Lubrication of the joint can reduce component wear; protective boots can prevent contaminants entering and damaging the joints. Protective boot covers can keep co be achieved by pre-lubricating the joint, applying oil drips, or outfitting the joint with lubricant-retaining boots (bellows). In addition to maintaining component lubrication.
Torsional Backlash (Play)
Heavy loads, shocks, vibrations due to misalignment, material wear can lead to loose play (backlash) within the bearings which can ultimately lead to joint failure.
Solution: Certain manufacturing processes, such as increasing pin diameter or reducing bore size can reduce the amount of play present. Needle bearing universal joints are specifically designed to maintain low backlash for critical positioning at high RPM and continuous operation.
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