ISCAR has developed a series of runout adjustment devices for BAYO T-REAM Reamer holders.
TheRM-BN-RC-RINGadjustment rings for BAYO T-REAM holders have been designed to reduce
runout caused by the machine spindle, holder weight (in horizontal applications) or long overhang.
By reducing the runout, theRM-BN-RC-RINGadjustment rings improve hole roundness,
straightness and surface quality.
Low runout, especially in high cutting conditions, provides higher process stability and prolongs
Advantages and Benefits
Maximum Runout Correction Values of Each Standard BAYO T-REAM Holder
Easy, user-friendly adjustment
Suitable for standard 3D, 5D & 8D RM-BNT holders
Improved process control and tool life
Thecompensation rangefor theRM-BN-RC-RINGadjustment ring iswithin 0.02-0.09 mm.
For special holders, the maximum possible runout can be calculated according to the
(mm) (Max runout correction) L1 neck overhang + insert length) x 0.0006
Maximum allowed runout correction value i 0.09(mm).
For example: if the L1 is 200 mm, the calculated runout value for correction is 0.12 mm
(180x0.0006=0.12 mm) but the actual possible runout correction value is limited to 0.09 mm.
A correction higher than 0.09 mm will cause the insert to touch the hole surface with its back taper.
Runout Correction Process
Mount the adjustment ring on the shank and slightly tighten the screws to prevent the ring from
Rotate tool to minimum runout
Rotate tool to maximum runout
Rotate sleeve so that the screw with “|”
mark is opposite to maximum runout
Tighten the screw with “|” mark to the
middle point between the found min. and
If runout still exists perpendicular to the
adjusted plane, refer to Step 6
Repeat steps 1-4 by using either
screws marked “||” or “|||”
After completing the adjustment process, slightly tighten the screw / screws that were not involved
in the process to prevent them from unscrewing during the reaming operation.
(1) Reamer bayonet size (2) RM-BNT reamer holder shank size