How to Oil a Squirrel Cage Fan
If you are wondering how to oil a squirrel cage fan, you have come to the right place. Here we will show you how to maintain the motor, keeping it at the correct rpm, and lubricate the impeller. In addition, we’ll discuss the importance of cleaning the impeller and bearings. This article will help you keep your fan running like new for as long as possible. Keep reading!
900 (850, 825) rpm motor
You should oil your squirrel cage fan with a 900 (850, 825) RPMS motor every year. This motor usually has bronze sleeve bearings, but you can order one with ball bearings if your application is more rigorous. Some fans have oil ports with removable plugs that you can use to oil the bearings. SAE 20W oil is recommended for this motor. If your fan has no oil ports, you can place the plug between the 10 and two o’clock positions.
Friction and flow separation losses in the impeller
The squirrel cage fan has twin impellers and is constructed with a cantilever structure to support two opposing impellers. One impeller rotates while the other moves forward. The impellers are separated by a middle plate, which shifts the blades to minimize mechanical resonances. The flow separation losses are the result of the boundary layer separating from the air near the volute wall.
The impeller’s blade-to-blade flow is axisymmetric. It shows an abrupt change in flow structure as the flow rate increases. The free inlet and obstructed outlet sections are clearly separated. The impeller’s volute tongue is a good example of a separated condition, and the flow separation losses are higher near the outlet. The impeller’s blades are asymmetric, and a blockage at the inlet promotes the flow to stagnate.
In addition to the failures that cause the inefficiency, the design of the impeller has other important features to ensure high efficiency. The impeller blades are only one mm thick, which limits energy loss and eddy formation, while leading edges are rounded parabolically. This prevents the narrowing of the channel width and reduces the acceleration of the air stream.
Keeping the bearings in perfect alignment
Keeping the bearings in perfect alignment on your squirrel cage fan can be a challenge. This is because the bearing housing is cast and can easily crack. We opted to use a JB weld to repair the cracked bearing housing. The bearings should be pressed against the shaft to prevent them from moving out of alignment. Using locktite to secure the bearing is an option, but a press fit is better.
The impeller is the most important part of a squirrel cage blower. It is a circular or cylindrical mechanism that has curved vanes that direct airflow. As it rotates, it imparts centrifugal force to the air, which in turn accelerates the air’s velocity and pressure. Keeping the bearings in perfect alignment is essential to maintaining your fan’s efficiency.
Cleaning the impeller
To clean the impeller of a squirrel cage fan, disassemble it. First, unscrew the fan’s front panel. This will give you access to the fan’s blower. Next, use a paintbrush to clean the blower blades. Make sure to remove any counterweights that prevent you from cleaning the entire fan, as well. Once the parts have been thoroughly cleaned, reassemble the fan.
Then, clean the impeller. For forward-curved fans, the impeller blades are prone to dirt buildup. Make sure that your filter keeps dirt out of the fan, and do a visual inspection every year. If it is a large fan, cleaning the impeller requires a more extensive process. For small fans, simply remove the impeller from the fan housing. If your fan is large, however, cleaning the impeller will be a major project.
For larger cages, you should consider purchasing a separate air purifier. You can use this for a squirrel cage fan. However, keep in mind that the impeller of this model is a delicate part. If you find that it has excessive dirt, it’s time to replace it. Cleaning the impeller is the most effective way to increase airflow in your squirrel cage. By following these steps, you’ll enjoy lower utility bills and healthier squirrels.
What’s the best way to oil a squirrel cage fan?
By using a oil can or a turkey baster you can apply a few drops of oil to each of the lubrication points.
How often should you oil a squirrel cage fan?
You should oil your squirrel cage fan at least once a year.
What type of oil should you use on a squirrel cage fan?
Any light weight oil will work such as 3-in-1 oil or sewing machine oil.
Where can you buy oil for a squirrel cage fan?
You can purchase oil for a squirrel cage fan at most hardware stores.
How much oil should you use on a squirrel cage fan?
You should use between 3-5 drops of oil.
How do you know if a squirrel cage fan needs to be oiled?
A good indication that your squirrel cage fan needs to be oiled is if it starts making noise.
What will happen if you don’t oil a squirrel cage fan?
If a squirrel cage fan is not oiled it will eventually seize up and stop working.
Is it hard to oil a squirrel cage fan?
No it is not hard to oil a squirrel cage fan.
Do you need special tools to oil a squirrel cage fan?
No you just need a oil can or a turkey baster.
Will oiling a squirrel cage fan make it run better?
Yes oiling a squirrel cage fan will keep it running smoothly.
What happens if you over oil a squirrel cage fan?
If you over oil a squirrel cage fan the oil will just drip off and will not do any good.
Is there a risk of electrical shock when oiling a squirrel cage fan?
No there is no risk of electrical shock when oiling a squirrel cage fan.
What do you do with the oil after you’re done oiling the squirrel cage fan?
You can just wipe off the excess oil with a rag.
What’s the best way to clean a squirrel cage fan?
The best way to clean a squirrel cage fan is to vacuum it with the brush attachment.
How often should you clean a squirrel cage fan?
You should clean your squirrel cage fan at least once a year.
Jessica Watson is a PHD holder from the University of Washington. She studied behavior and interaction between squirrels and has presented her research in several wildlife conferences including TWS Annual Conference in Winnipeg.