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USER GUIDE
ITS BORE

Fine Boring Head BHFI 63-125
Operating Instructions

BHFI 50 Shown

1 Body
BHFH 2 Expanding pin
3 Graduated dial
4 Slide locking screw
5 Toolholder locking screw
6 Coolant nozzle
1 3 7 7 Slide holder
IHFF 8 Oiling nipple
9
9 Toolholder locking
BBH screws
0 1 2 10 Slide adjustment range
9 3
Do not exceed the
8
4
7
range marks
5
6
8
IHFF / IHRF
ADBH 30xD16
2 4 6 10
IHAX F

5

Assembly Positioning
• Before mounting the BHFI boring head, • The tool slide [7] allows for a .197” adjustment by
make sure the expanding pin [2] does not turning graduated dial [3] counterclockwise.
protrude from the cylindrical body part. • When changing the direction of the dial rotation,
• Insert BHFI into the shank. backlash must be compensated for.

• Tighten pin [2] by turning clockwise • After positioning, lock the tool slide
following the recommended tightening by means of the screw [4].
torque guidelines below: • Loosen screw [4] before making any slide adjustment.
Recommended torque: (Lbf ∙ ft) Maintenance
BHFI MB50- 63x87 22.13-25.82
BHFI MB50- 80x94 22.13-25.85 Weekly:
BHFI MB63- 63x87 59.0-66.38 • Lubricate through the nipple [8] with ISO UN G220 oil.
BHFI MB80- 80x94 59.0-66.38 Periodically:
BHFI MB80-125x94 59.0-66.8 • Clean and lubricate the conical and
• Insert the screw [5]. If it protrudes, the sleeve cylindrical matching surfaces.
should be rotated until the screw can enter the • Treat expanding pin [2] with an anti-friction lubricant.
recess in the sleeve nut or boring bar. • Clean and lubricate the tool slide guideway.
Disassembly Important Note:
In order to separate the BHFI from the shank, loosen Toolholder should be firmly affixed to the slide.
the expanding pin [2] by turning counterclockwise.

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