Shaft sealing is the process of adding a cover or seal to the shaft of a stationary part so that liquid or gas cannot pass through it. Stationary parts are generally used in place of pumps and valves in industrial processes. If a seal is not present on the shaft, liquid can leak out and cause problems with efficiency, productivity, and/or safety. This blog post discusses how using shaft sealing could reduce seal clearance reductions for your industrial plant.
What is Shaft Sealing?
Shaft sealing is a process that is used to reduce seal clearance reductions in rotary and reciprocating engines. The reduction in seal clearance reduces the amount of oil that can escape from the engine, which in turn reduces the chances of engine failure. Shaft sealing can be performed on both rotary and reciprocating engines.
Rotary shaft sealing is typically done when the engine reaches its operating temperature range. This procedure seals the oil passages between the rotating parts of the engine, which prevents dirt, particles, and moisture from entering and causing damage.
Reciprocating shaft sealing is usually done when there is a problem with oil leakage. This type of sealing replaces worn or damaged parts of the shaft with new ones that are specifically designed to prevent leaks.
Why do We Need Shaft Sealing?
Shaft sealing is one of the most effective ways to reduce seal clearance reductions in rotating machinery. Sealing the shaft eliminates gaps and reduces leakage, which can improve efficiency and durability. In some cases, shaft sealing can also help prevent wear and tear on other components within the machine.
How Does Shaft Sealing Work?
Shaft sealing helps to reduce seal clearance reductions by creating a better seal between the shaft and bearing. This type of sealing is typically done on larger, higher-speed bearings. In general, shaft sealing is accomplished by greasing the inside of the shaft and bearing race and then fitting them together. A sealant is then applied around the joint to create a permanent seal.
Types of Joints in Motors
There are a variety of joints in motors, each with its own benefits and drawbacks. The most common type of joint is the shaft-to-case joint. This joint helps to reduce seal clearance reductions by acting as a seal between the shaft and the case. Other types of joints include:
• Ball-in-socket joint: This type of joint is used when movability is important, such as in actuators or fans. It allows for smooth movement without friction, which can be helpful in reducing wear and tear on the motor.
• Plane-lead joint: This type of joint is used when two pieces that are not necessarily rigid must move together (such as an engine block and cylinder head). The plane lead allows for precise alignment while allowing for movement.
• Ring gear-pinion gear joint: This type of joint is used when two gears need to mesh together (for example, when a gearbox needs to transfer power from the engine to the wheels). The ring gear sits inside the pinion gear, which allows for easy rotation but also prevents any accidental disengagement.
How to Properly Perform a Shaft Seal Job?
Shaft sealing can help to reduce seal clearance reductions and improve bearing mechanical properties. The proper shaft sealing procedure involves a number of steps including a selection of the sealing material, application method, and curing time.
When selecting a shaft sealing material, it is important to consider the characteristics of the fluid being sealed. For example, oils and greases should be sealed with an oil-based sealant while water-based sealants are appropriate for fluids such as glycols and hydraulic fluid.
The application method for shaft sealing can be either manual or automated. Automated systems use pressure and temperature to cure the sealant in situ; this is the most common method used in industrial applications. Manual systems use an applicator to spread the sealant over the surface of the shaft; this is often used in automotive applications.
Curing time for shaft sealing is also important; longer curing times result in a harder sealant that will last longer but may also require more frequent re-sealing. In general, hardened seals should be unsealed after about six months while semi-hardened seals can last up to two years.
One of the most common problems that shaft sealers face is reduced seal clearance. This can be caused by a variety of factors, but one of the most common reasons is inadequate sealing at the joint between the shaft and sleeve. By following these simple steps, you can help to ensure that your shaft sealer is able to do its job properly and reduce the chances of reduction.