The Ultimate Guide to Buying Air Compressors and Accessories Online
Looking to buy air compressors and accessories online? This ultimate guide has everything you need to know before making your purchase.
Screw air compressor parts include air filters, oil filters, filter elements, and specialized oil for screw air compressors. Choosing high-quality screw air compressor parts can not only extend the life of the compressor but also save unnecessary costs and improve factory productivity. So, how do you choose the best screw air compressor parts? Let’s take a look together.
Is the trade mark complete?
The packaging of authentic screw air compressor components is of high quality. The packaging box has clear and distinct printing with bright colors. The product name, specifications, quantity, registered trademark, factory name, address, and phone number should be clearly marked on the packaging box and bag. Some manufacturers even mark their own logo on the parts. Important components such as generators, oil filters, and oil separators are also accompanied by user manuals, certificates of conformity, and inspector stamps to guide users on proper usage and maintenance. When purchasing, it is important to carefully identify the authenticity to avoid buying counterfeit products.
Is there any distortion in the geometry?
Improper manufacturing, transportation, and storage can cause some parts to become deformed. To check for deformities, roll shaft parts along a glass plate and observe if any light leaks through the contact area between the part and the plate. When selecting oil seals, those with a skeleton should have a circular end face that can be placed flat against a glass plate without any warping, while those without a skeleton should have a straight outer edge. When squeezed by hand, the seal should return to its original shape when released. When selecting various types of filters, attention should also be paid to checking their geometric dimensions and shapes.
Is the junction even?
When transporting and storing screw air compressor parts, it is common for burrs, dents, cracks, and other damage to occur at the joints due to vibration and impact. This can affect the performance of the parts, so it is important to carefully inspect them when purchasing.
Is there any rust on the surface of the parts?
When it comes to packaging for high-quality components, precision and a shiny, smooth surface are key. The more important the component, the higher the precision required and the stricter the anti-rust and anti-corrosion packaging should be. When purchasing, it’s important to inspect the parts carefully. If you notice any rust spots, mold spots, or cracks in rubber parts, or if the surface of the shaft has obvious tool marks, it should be replaced.
Is the protective surface intact?
When parts are manufactured, they are often coated with protective layers, such as piston rings. Cylinder sleeves are coated with rust-proof oil and wrapped in packaging paper. Valves and pistons are coated with rust-proof oil and then sealed in plastic bags. When purchasing these parts, if the seal is broken, packaging paper is missing, or rust-proof oil or wax has leaked, they should be returned for exchange.
Are the glued parts loose?
Screw air compressors are made up of two or more parts that are combined using compression, adhesive bonding, or welding. It is important that there is no looseness between the parts. For example, the paper filter element and filter paper skeleton of a paper filter are bonded together, while the wire ends of electrical equipment are welded together. If any looseness is found during the selection process, the parts should be replaced.
Are the rotating parts flexible?
When selecting a rolling bearing for a screw air compressor, support the bearing with one hand and the inner ring with the other hand. Use the other hand to rotate the outer ring, which should be able to rotate quickly and smoothly before gradually coming to a stop. If the rotating parts do not move smoothly, it indicates internal rust or deformation, and the bearing should not be purchased.
Are there any missing parts in the assembly?
For a complete and successful assembly and operation, it is essential that all parts of a regular assembly component are present and in good condition. If even a few small parts are missing from certain assembly components, it can render the entire component useless and even lead to its failure.
Are the assembly marks clear?
To ensure that the assembly of the components of a screw air compressor meets technical requirements, some parts (such as the timing gear) have assembly marks on their surfaces. If there are no marks or if they are unclear and cannot be identified, it can cause significant difficulties in assembly and even lead to incorrect assembly.
Are the mating surfaces worn?
If there are signs of wear on the mating surfaces of the parts of a screw air compressor, or if painted parts reveal old paint after the surface paint is removed, it is likely that the parts are disguised as scrap. In this case, it is possible to request a replacement of the screw air compressor parts.
Is the surface hardness up to standard?
When purchasing parts for a screw air compressor, it is important to ensure that the surface hardness meets the required specifications. After finalizing the purchase with the seller, one can use the jagged edge of a steel saw blade to test the hardness. If the blade slides without leaving any marks, it indicates high hardness. If there are slight marks after the blade is used, the hardness is relatively high. However, if there are obvious marks after the blade is used, it indicates low hardness. (Note: be careful not to damage the working surface while testing the hardness.)
