Use TTLDTANB Arbor when no Bearing is used.
Use TTLDTA Arbor with TTB16 Bearing.
Z=Number of flutes. RPM=Maximum revolutions per minute
Groove Depth with various bearings are as follows
TTB14 = 13.6mm, TTB15 = 13.1mm, TT5/8-B16 = 12.6mm, TTB17 = 12.1mm, TTB18 = 11.6mm, TTB19 = 12.1mm, TTB20 = 10.6mm, TTB21 = 10.1mm, TTB22 = 9.6mm, TTB23 = 9.1mm, TTB24 = 8.6mm, TTB25 = 8.1mm