Precision Finish Boring - Large Diameter

Precision Finish Boring Heads 6.00" to 21.89" (152.4 mm to 556 mm) Bolt on Boring Ring Adapter

Click to Enlarge [+]

Click to Enlarge [+]

Large Diameter

  • Finish bore full range of extension base.
  • Uses modular extension base to minimize tooling inventory.
  • Diameter adjustment of .0001 with Vernier scale.
  • .040 per revolution, .001 (.02 mm) on diameter dial.
BORING RANGE - INCHES
Boring Min.
Range		 Boring Max.
Range		 Extension Base Extension Base
Weight (lbs.)		 Boring Head
5.95 8.27 17BR-7108 7.1 7100-2816
8.22 10.54 17BR-7110 8.8 7100-2816
10.49 12.81 17BR-7112 11.1 7100-2816
12.76 15.08 17BR-7115 14.2 7100-2816
15.03 17.35 17BR-7117 16.5 7100-2816
17.30 19.62 17BR-7119 18.8 7100-2816
19.57 21.89 17BR-7121 21.9 7100-2816
ALTERNATE HEAD W/COUNTERWEIGHT*
Finish Head Base Counterweight
FBU-2415 7100-B460 816-009
* Alternate Head w/Counterweight is compatible with all listed items in the "Inch - Boring Range" table.
BORING RANGE - METRIC
Boring Min.
Range		 Boring Max.
Range		 Extension Base Extension Base
Weight (lbs.)		 Boring Head
151.13 210.06 17BR-7108 7.1 7100-2806
208.79 267.72 17BR-7110 8.8 7100-2806
266.45 325.37 17BR-7112 11.1 7100-2806
324.10 383.03 17BR-7115 14.2 7100-2806
381.76 440.69 17BR-7117 16.5 7100-2806
439.42 498.35 17BR-7119 18.8 7100-2806
497.08 556.01 17BR-7121 21.9 7100-2806
ALTERNATE HEAD W/COUNTERWEIGHT*
Finish Head Base Counterweight
FBU-2405 7100-B460 816-009
* Alternate Head w/Counterweight is compatible with all listed items in the "Metric - Boring Range" table.
BORING HEAD INSERT SIZE & WEIGHT
Part Number Insert Insert Holder Size Weight (lbs.)
7100-2806 TCMT 11 8 4.3
7100-2816 TCMT 11 8 4.3
7100-B460 TCMT 11 - 2.8
816-009 TCMT 11 - .7
FBU-2405 TCMT 11 4 .7
FBU-2415 TCMT 11 4 .7