In F66 collets (DIN 185E), the d dimension is 66 millimeters. This collet gets its name from this dimension. The A dimension is 84 millimeters and the B dimension is 73 millimeters. The K angle is 15 degrees.
As Erveysa, we grind the above-mentioned dimensions precisely. Again, we grind the inner diameter dimension, which is the diameter that holds the material, precisely.
F66 collet (DIN 185E) is ground with a precision of 0.01 mm in diameter 10 millimeters.
In our ultra-precise collet production, we produce with a precision of 0.008 mm in diameter 10 mm.
If desired, we can open a thread on the inside of F66 collets.