The BSF is specifically designed for CNC machining and functions without an anti-rotation device, change of spindle direction or contact mechanism. The blade expands using centrifugal force when activating the spindle. The blade retracts by coolant pressure. The coolant pressure moves a piston which is pushing a pin that forces the blade (closed) into the blade housing. The design of the BSF focuses on optimal cutting performance, chip removal and reliability. The tool and the blade have special coolant pipes and chip-guiding geometries that continuously flush the blade window and the blade itself with coolant. This keeps the whole section clean and allows for optimal chip removal.
Available from stock for immediate delivery in sizes
from 6.5 mm to 20.5 mm (0.256" to 0.807")
The tools and blades are sold separately and they each have an OFFSET dimension. When combined they equal the
effective counterbore diameter. For assistance, use our online Tool Selector.
1. Choose the tool closest to the bore diameter.
2. Choose the proper blade for the
required counterbore diameter.
HEULE recommended the BSF tool with a working length of 80 mm, together with a TiAlN coated carbide blade type BSF-M-E-1A-5.0.
Machining parameters:
By replacing their old tool, which needed pre-adjustments, this customer found more stability and a better process capability. The better stability led to a longer blade life for the tool. The customer is very happy with the solution and noted that their process is more efficient, precise, and safe.