Determine Boring Bar Sizes from Diameter Ranges

CCT Bar Size # Depth of Cut Cartridge Size
Using Diamond Insert Cartridge
 
Bore
 
MIN MAX
Using Triangle Insert Cartridge
 
Bore
 
MIN MAX
Using Brazed Cartridge
 
Bore
 
MIN MAX
51 2 5/8 1B .50 .59 N/A N/A .50 .59
52 2 5/8 1B .56 .65 N/A N/A .56 .65
53 2 7/8 1A .62 .78 N/A N/A .62 .78
54 3 3/8 2B .75 .90 .75 .86 .75 .90
54 3 3/8 2A .88 1.06 .83 .96 .88 1.06
55 4 1/8 3B .91 1.18 .92 1.18 .90 1.15
56 4 1/2 3A 1.13 1.63 1.13 1.63 1.12 1.56
57 5 1/8 3A 1.13 1.63 1.13 1.63 1.12 1.56
58 4 1/2 5B 1.50 1.94 1.50 1.94 1.50 1.94
59 6 3/4 5B 1.50 1.94 1.50 1.94 1.50 1.94
60 4 1/2 5A 1.81 2.63 1.81 2.63 1.81 2.63
61 7 1/4 5A 1.81 2.63 1.81 2.63 1.81 2.63
62 8 1/8 5A 1.81 2.63 1.81 2.63 1.81 2.63
63 5 7A 2.44 3.44 2.30 3.35 2.44 3.44
64 7 1/4 7A 2.44 3.44 2.30 3.35 2.44 3.44
65 11 7A 2.44 3.44 2.30 3.35 2.44 3.44
66 3 3/8 7A 3.25 4.25 3.17 4.17 3.25 4.25
67 4 5/8 7A 3.25 4.25 3.17 4.17 3.25 4.25
68 7 7/8 7A 3.25 4.25 3.17 4.17 3.25 4.25
69 11 3/4 7A 3.25 4.25 3.17 4.17 3.25 4.25
70 4 3/4 10A 3.87 5.62 3.87 5.62 3.87 5.62
71 11 3/4 10A 3.87 5.62 3.87 5.62 3.87 5.62

 

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