Floating oil seals are categorized by the width of the working surface light strips.

Narrow bright ribbon type

This type of floating oil seal has a working face light band width of only 0.2~0.3mm. Its advantage is that the light band grinding is simple and time-saving, but it requires a high degree of concentricity for the floating ring. If the concentricity is out of tolerance during operation, oil leakage will occur.

(2) Wide and bright ribbon-type

This type of floating oil seal features a wider working face light strip, with a width ranging from 1.5 to 2.5mm. Its advantage lies in the lower concentricity requirement for the floating ring parts during timely assembly. The DO0820 coal mining machine's floating oil seal installation gap offers good sealing performance, though the process of polishing the light strip is time-consuming and labor-intensive.

What are the differences between used and unused floating oil seals?

Generally, used floating oil seals have a visibly soiled and aged appearance. Unlike unused ones, the DO0820 coal mining machine floating oil seal, as per the installation guide, appears relatively new; the rubber ring is also not deformed, and even shows surface scratches; there's also the case of the rubber ring being flattened and not springing back in the DO0820 coal mining machine floating oil seal from Henan. Additionally, the rubber ring's resilience and overall hardness will not change due to the usage environment.

After use, the floating oil seal exhibits a distinct change: the mating line on the metal ring gradually moves inward with use, forming a visible track around the seal.

How to perform a simple floating oil seal ring hardness test?

Place the floating oil seal ring on the inspection table, turn the inspection rod, watch the DO0820 coal mining machine floating oil seal installation video, and the dashboard gauge needle moves to the starting position.

After a period of rest, rotate the detection rod again; the pointer will point to the direction of the ring body hardness. For measurement accuracy, select points at multiple locations on the ring body of the floating seal ring.

Generally, to ensure accuracy, select three to five evenly spaced points. After choosing the points again, rotate the measuring dial in the same manner. First, zero the dial and then repeat the entire previous process. Press the rotation button, wait calmly for the pointer to point to the starting direction, and after three to five dots are made, you can test the relatively accurate value of the floating oil seal ring hardness. This is the entire process of measuring the hardness of the floating oil seal ring.

Henan DO0820 Coal Mining Machine Floating Oil Seal - Provided by Beijing Zonuo Seal Co., Ltd. Beijing Zonuo Seal Co., Ltd. offers services including "floating oil seals, floating seals, mechanical face seals, floating rings, floating sealing rings," and more. The company owns brands like "ZHONO" and specializes in sealing parts and industries. It has a good reputation in Dongcheng District, Beijing. Welcome to call for inquiries, contact person: Shan Xiaopei.