B685
B685 – Stable and productive cylinder boring, from roughing to semi-finishing
Concept description
Cylinder boring is a key operation in the automotive industry; a high-speed operation with high requirements on tight tolerances. Until now, the operator has adjusted the insert position manually, which is a time-consuming procedure and often requires special devices.
The B685 cylinder boring bar is designed to combine roughing and semi-finishing in one operation. The solution provides excellent roundness and cylindricity and allows for a smooth finishing operation thanks to the integrated Silent Tool dampener.
Features and benefits
- The ability to perform roughing and semi-finishing in one shot saves time and reduces costs
- Provides an excellent foundation for a successful finishing operation
- Silent ToolsTM dampening adaptors reduce vibration and result in excellent surface quality, roundness and cylindricity
- Coolant function on the cutting edges
- No need for special devices
Application
- Optimized for the automotive engine industry, mainly engines in passenger cars and light trucks
- Main components:Engine cylinder blocks in cast ironEngine cylinder blocks in aluminum with integrated cast iron liners or sleevesAll cylinder liner operations
- Machine types: unit centers and transfer lines
Cutting data recommendations
vc m/min (ft/min) 350–600 (1,148–1968)
ap max mm (inch) 2 (0.0787)
fz mm/z (inch/z) 0,1–0,15 (0.0039–0,0059)
Technical information
Insert shape: HCGW 100308 (CBN) full face
Edge line preparation: S01320 + 20 µm ER
Grades
- U6F3
- CB20
