Bearing rust work is an important task, especially in the inter-process rust, like the bearings in the heat treatment shop after pickling, cleaning, grinding, machining, there are many procedure. When the product is not used water production at a time sequentially finished processing library will store in the middle, so the process between the bearing rings must be stored rust.
Traditional anti-rust paint using the same method and its lack of anti-rust oil rust process rust bearings commonly used methods are the following:
1 dip tank in rust
The bearing trap immersed in 5% sodium nitrite and 0.6% aqueous solution of sodium carbonate, rust is still good, but many rust tank and other equipment, take up a lot of space, management is not easy.
2 dipping concentrated solution of sodium nitrite
After cleaning the product, into a solution containing 15% -20% of sodium nitrite and 0.6% sodium carbonate solution, then it is piled up. With this method it rust shorter, generally only remain 7-14 days, and in the rainy season, due to wet weather, can only maintain 2-3 days must be reprocessed, it takes labor and money.
3 oiled
Finished painted similar rust like the same as anti-rust oil. This method must be cleaned before the next step, more trouble.
Product Model | Inside Diameter | Outside Diameter | Thickness |
7900CDB NSK | 10 | 22 | 6 |
7238B NSK | 190 | 340 | 55 |