Page 48 BB6100 Operating Manual
6. Sharpen the tool bit, if necessary.
7. Use a dial indicator to reset the tool bit cutting depth. The maximum
recommended cutting depth is 0.125" (3 mm).
8. Operate the boring bar as described in Section 4.4.2.
4.5 Disassembly
4.5.1 Standard disassembly
1. Turn off and unplug the hydraulic power unit.
2. Disconnect the hydraulic lines from the motor.
3. Remove the tool bit.
4. Remove the tool head and tool carrier.
5. Remove the axial feed unit from the bar.
6. Support the boring bar, bearing supports, and RDU with hoists.
7. If the RDU is between the bearing support assemblies, loosen one support first.
Remove that support from the work piece and bar.
8. Secure the RDU with a hoist. Loosen the shaft collars. Remove the drive key.
Carefully slide the RDU off the bar.
9. Loosen the remaining bearing support assemblies. Remove the boring bar.
10. Remove the bearing supports from the work piece.
4.5.2 Optional disassembly
In some cases, it is better to remove the bearings before removing the bar.
1. Turn off and unplug the hydraulic power unit.
2. Disconnect the hydraulic lines from the motor.
3. Remove the tool bit.
4. Remove the tool head and tool carrier.
5. Securely support the boring bar, bearing supports, and RDU with hoists.
6. Remove the axial feed unit from the bar.
7. If the RDU is between the bearing support assemblies, remove one support first.
Remove the support from the work piece and bar.
8. Secure the RDU with a hoist. Loosen the shaft collars. Remove the drive key and
carefully slide the RDU off the bar.
9. Loosen the bearing support jacking screws.
10. Place a wooden support in the bottom of the bore to support the bar.
11. Remove the bearing supports from the work piece.
12. Slide the bar out of the bore using the wooden support.
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