B687
B687 – Stable and productive finishing cylinder boring
Concept description
The B687 cylinder boring bar is designed for productive and stable finishing. The cutter is available in different designs, depending on operation. Use the three-cartridge design for reliable performance in under-coolant applications.
Benefits and features
- Dimension compensation unit:Possible to set up the tool without any special deviceEasy to handle compared to other solutions where you need to stop the spindle, remove the tool from the machine, cool it down, adjust it, and initiate a new holePre-set dimensionsDirectly set at the final diameter in the working position—no actuation needed
- Patented speed control unitNo need to stop the spindle during feed outReduces cutting timeEnsures that no marks are left when the tool leaves the holeNo need for special machinesNo need to switch off the coolant during machining
- Repeatability within 0.002 mm (0.00079 inch) on the diameter
- Integrated coolant
Application
- Optimized for cast iron or aluminum cylinder blocks designed with cast iron liners or sleeves
- Industry segment: Automotive industry
- Machines: Unit center machines and transfer lines
Cutting data recommendations
vc m/min (ft/min) 350–800 (1,148–2,624)
ap mm (inch) 0.1–0.25 (0.0039–0.0098)
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 with high CBN content
- CB20 with lower CBN content than U6F3
How to use
- Set up in the tool shop
- Use coolant pressure between 10 and 15 bars
- No need to switch off the coolant
