Problems :

• lack of coolant, edge build up on reamers
• irregular angles
• depth of cut too big, reaming tolerance too high
• axial alignment between tool and hole displaced

• correct alignment or use RE-AL floating holder
• check diameter and tolerance of reamer
• check coolant, increase pressure, consider using through coolant

• reamer is blunt
• depth of cut is insufficient
• workpiece springs back

• exchange reamer
• increase depth of cut
• check coolant, increase pressure, consider using through coolant

Problems :

• reamer oscillates in the axis
• drilled hole is not centred
• axial alignment displaced between tool and hole
• swarf in upper part of hole

• correct alignment or use RE-AL floating holder
• ensure alignment of working tool

• axial alignment displaced between tool and hole
• swarf in lower part of hol
• reamer is bottoming the hole

• correct alignment or use RE-AL floating holder
• ensure alignment of working tool
• ream (deep) hole in 2 to 3 passes

Problems :

• drilled hole is out of axis
• concentricity of lead angle is not correct

Solutions :

• check concentricity of drilled hole
• check concentricity of reamer axis

• workpiece moves during reaming

Solutions :

• fix workpiece precisely/constantly

• reamer or hole damaged
• insufficient supply of coolan
• edge build up on reamer
• poor removal of swarf
• axial alignment displaced between hole and tool

• replace reamer
• correct alignment or use RE-AL floating holder
• consult recommendations of reaming
• check coolant and increase pressure, consider using through coolaant

• reamer land is too large
• insufficient back taper (min. 0,015 on 100mm)
• drilled hole too small and not centred
• lead angle badly ground

• according to material/spezial alloy adapt lead angle or land
• correct alingment or use RE-AL floating holder
• material dependent (soft/normal/treated) reduce or increase reaming speed