Washers - Bushing, Shoulder are precision mechanical components combining the functions of a bushing and a washer. Featuring a stepped outer diameter design, they provide axial load distribution while maintaining precise radial alignment. These components are critical in modern machinery for reducing friction, preventing vibration-induced loosening, and protecting assembly surfaces. Their engineered geometry enables simultaneous load-bearing and spacing functionality in compact designs.
| Type | Functional Characteristics | Application Examples |
|---|---|---|
| Standard Shoulder Bushing Washer | Uniform wall thickness, concentric shoulder design | General-purpose machinery, automotive linkages |
| Threaded Shoulder Bushing | Integrated internal threading for secure fastening | Aerospace fastening systems, vibration equipment |
| Split Shoulder Bushing | Segmented design for easy installation/removal | Heavy equipment maintenance, shaft repair |
| Flanged Shoulder Washer | Extended flange for enhanced load distribution | Structural steel connections, rail systems |
Typical construction features:
| Parameter | Significance |
|---|---|
| ID/OD Dimensional Tolerance | Ensures proper fit with shaft and housing (typically H7/g6) |
| Shoulder Height | Determines axial positioning accuracy ( 0.1mm standard) |
| Hardness Rating | Affects wear resistance and load capacity |
| Surface Roughness (Ra) | Impacts friction coefficient (Ra 0.8-3.2 m typical) |
| Corrosion Resistance | Determines service life in harsh environments |
Primary industries:
| Manufacturer | Key Product Series | Technical Features |
|---|---|---|
| MISUMI | WSB Series | Modular design, 12 standard sizes |
| Nord-Lock Group | Shox Washer | Combined wedge-locking and bushing function |
| Bossard Group | Proliant SW | High-strength steel (12.9 class) |
| IKEUCHI | Oiles SPB | Self-lubricating polymer composite |
Key selection criteria:
Emerging development directions:
