| Customization: | Available |
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| Mandrel Types: | Steel Mandrels, Bronze Mandrels, Diamond Plated |
| Diameter: | 3,81-3,94mm |
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BOSON ABRASIVES specializes in the manufacture of superabrasive honing stones, including diamond (DM) and cubic boron nitride (CBN, NM) honing stones, as well as a wide range of honing tools compatible with Sunnen and other honing machines.
We offer a full range of Sunnen standard K, L, and P series honing stones, delivering competitive pricing while maintaining consistent quality equivalent to OEM standards.
Honing Mandrels incl.Honing is often applied to the inner bores of drill bushings to achieve high dimensional accuracy, roundness, and superior surface finish. Drill bushings are critical components used to guide cutting tools such as drills and reamers during machining. In high-precision applications, even minor deviations in the bushing's bore can lead to tool misalignment, hole inaccuracy, and increased wear.
By honing the inner bore, manufacturers can achieve tighter tolerances (e.g., H5-H6), improve cylindricity, and reduce surface roughness (Ra < 0.2 µm). This ensures smooth tool entry, consistent positioning, and extended service life of both the bushing and the cutting tool.
Honed drill bushings are widely used in aerospace, automotive, mold making, and precision machining industries, where accuracy and repeatability are essential.
K5 / BL5 Honing Units, Diameter Range: 3.81mm - 4.70mm
| Diameter Range mm | Diameter Range Inches | K5 Mandrel | BL5 Mandrel | Adapter | Alignment Bushing | Truing Sleeve | Honing Stone |
| 3,81-3,94 | .150-.155 | K5-150CH | BL5-150CH | K5-A/BL5-A | C-150 | S-150 | K5DM35 / L5DM35 |
| 3,94-4,06 | .155-.160 | K5-155CH | BL5-155CH | K5-A/BL5-A | C-155 | S-155 | K5DM45 / L5DM45 |
| 4,06-4,19 | .160-.165 | K5-160CH | BL5-160CH | K5-A/BL5-A | C-160 | S-160 | K5DM55 / L5DM55 |
| 4,19-4,32 | .165-.170 | K5-165CH | BL5-165CH | K5-A/BL5-A | C-165 | S-165 | K5DM85 / L5DM05 |
| 4,32-4,44 | .170-.175 | K5-170CH | BL5-170CH | K5-A/BL5-A | C-170 | S-170 | K5DM05 / L5DM05 |
| 4,44-4,57 | .175-.180 | K5-175CH | BL5-175CH | K5-A/BL5-A | C-175 | S-175 | K5NM55 / L5NM55 |
| 4,57-4,70 | .180-.185 | K5-180CH | BL5-180CH | K5-A/BL5-A | C-185 | S-180 | K5NM05 / L5NM05 |
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