DXTB228 Steel Sleeve M19x1.5/M28x1.5x57 M19x1.5/M28x1.5x63

High structural strength: The annular groove on the outer cylindrical surface not only serves to store lubricating oil but, more importantly, the "rib-like" structure effectively enhances the bushing's compressive strength and overall rigidity, preventing deformation during insertion into the hole or under load.
Easy to install and position:
One end features a hexagonal flange face: This design is exceptionally ingenious. It allows for easy and effortless installation and removal with tools like wrenches. Additionally, the flange face serves as an axial positioning surface, ensuring precise depth when pressing the bushing into the housing and preventing rotation or detachment during use.
Excellent functional integration:
Internal threads: Integrated with connection functionality, they can directly mate with parts such as bolts, simplifying the entire assembly structure and eliminating the need for additional nuts or connectors.
Potential improvement in lubrication and wear resistance:
The annular groove can store grease, providing continuous lubrication in situations requiring relative motion (such as when used as a sliding bearing or guide sleeve), thereby reducing wear and extending service life.
If the surface has indeed undergone hardening treatments such as nitriding as speculated above, its wear resistance and corrosion resistance will be exceptionally outstanding.

Factory Pictures:

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