Precision jig boring and drilling operations demand components engineered to withstand immense wear and tear while maintaining exacting tolerances. For these critical applications, Hardened Steel Plain Drill Bush components are the standard, offering superior durability and dependable performance. In scenarios involving extreme abrasion from exotic materials or high-volume production runs, Cemented Carbide Precision Bushing Sleeves provide an unparalleled solution, extending tool and guide life significantly. The DIN179A Precision Drill Bushing represents the pinnacle of this engineering, adhering to stringent international standards to guarantee repeatability and accuracy in the most demanding machine tool environments.
Every aspect of the DIN179A Precision Drill Bushing is manufactured to meet precise specifications, ensuring seamless integration and optimal performance within jigs and fixtures. This commitment to precision is detailed in its core parameters, which are critical for machinists and design engineers selecting the correct component for their application. The following specifications define the DIN179A Precision Drill Bushing's capabilities and its role as a foundational element in precision tool guiding.
| Nominal Bore (d1) | Outside Diameter (D) | Bushing Length (L) | Recommended Drill Jig Hole (H7) |
|---|---|---|---|
| 3 mm | 8 mm | 12 mm | 8 mm |
| 5 mm | 10 mm | 16 mm | 10 mm |
| 8 mm | 15 mm | 20 mm | 15 mm |
| 10 mm | 18 mm | 24 mm | 18 mm |
| 12 mm | 20 mm | 28 mm | 20 mm |
| 15 mm | 24 mm | 32 mm | 24 mm |
The table above outlines common sizes, showcasing the precise press-fit relationship between the bushing's outside diameter (D) and the jig hole. The internal bore (d1) is honed to a micro-finish, minimizing friction and tool wear while ensuring the cutting tool runs true. The exceptional hardness of 60-64 HRC is achieved through controlled heat treatment, providing the necessary resilience against the abrasive action of high-speed steel and carbide tools. This combination of dimensional accuracy, superior surface finish, and extreme hardness is what makes the DIN179A Precision Drill Bushing a reliable and long-lasting component for achieving consistent hole location and size in mass production and precision machining tasks.
