ØD2 = D + 2.2     ØD2 = Swing Diameter     Ød1 = Tool Body Diameter

COFA Deburring Series C12
Ød ØD1 ØD Tool without Blade
Min. Hole Tool Diameter Approx. Cutting Dia. Approx. Cutting Dia. Tool Order Number
mm inches mm inches mm inches mm inches
Medium Blade Large Blade
12.0 .472 11.8 .465 13.6 .535 14.8 .583 C12-12.0-☐
12.5 .492 12.3 .484 14.1 .555 15.3 .602 C12-12.5-☐
13.0 .512 12.8 .504 14.6 .575 15.8 .622 C12-13.0-☐
13.5 .531 13.3 .524 15.1 .594 16.3 .642 C12-13.5-☐
14.0 .551 13.8 .543 15.6 .614 16.8 .661 C12-14.0-☐
14.5 .571 14.3 .563 16.1 .634 17.3 .681 C12-14.5-☐
15.0 .591 14.8 .583 16.6 .654 17.8 .701 C12-15.0-☐
15.5 .610 15.3 .602 17.1 .673 18.3 .720 C12-15.5-☐
16.0 .630 15.8 .622 17.6 .693 18.8 .740 C12-16.0-☐
16.5 .650 16.3 .642 18.1 .713 19.3 .760 C12-16.5-☐
17.0 .669 16.8 .661 18.6 .732 19.8 .780 C12-17.0-☐
17.5 .689 17.3 .681 19.1 .752 20.3 .799 C12-17.5-☐
18.0 .709 17.8 .701 19.6 .772 20.8 .819 C12-18.0-☐
18.5 .728 18.3 .720 20.1 .791 21.3 .839 C12-18.5-☐
19.0 .748 18.8 .740 20.6 .811 21.8 .858 C12-19.0-☐
19.5 .768 19.3 .760 21.1 .831 22.3 .878 C12-19.5-☐
20.0 .787 19.8 .780 21.6 .850 22.8 .898 C12-20.0-☐
20.5 .807 20.3 .795 22.1 .870 23.3 .917 C12-20.5-☐
21.0 .827 20.8 .819 22.6 .890 23.8 .937 C12-21.0-☐
21.5 .846 21.3 .839 23.1 .909 24.3 .957 C12-21.5-☐
22.0 .866 21.8 .858 23.6 .929 24.8 .976 C12-22.0-☐
22.5 .886 22.3 .878 24.1 .949 25.3 .996 C12-22.5-☐
23.0 .906 23.8 .898 24.6 .969 25.8 1.016 C12-23.0-☐
23.5 .925 23.3 .917 25.1 .988 26.3 1.035 C12-23.5-☐
24.0 .945 23.8 .937 25.6 1.008 26.8 1.055 C12-24.0-☐
24.5 .965 24.3 .957 26.1 1.028 27.3 1.075 C12-24.5-☐
25.0 .984 24.8 .976 26.6 1.047 27.8 1.094 C12-25.0-☐
25.5 1.004 25.3 .996 27.1 1.067 28.3 1.114 C12-25.5-☐
26.0 1.024 25.8 1.016 27.6 1.087 28.8 1.13 C12-26.0-☐
Blades sold separately for COFA-C Series, see Blade Options





Spare Parts - COFA C12
1 2 3 4
Split Pin Blade Holder Blade Spring
C12-E-0003 C12-E-0001 See Below See Below
5 6 7
Screw Retainer Block Assembly Pin Fixture*
GH-H-S-0530 GH-C-E-0800 C12-V-0005 C12-V-0018

Spring Options:
The cutting force of the COFA tool is controlled by a flat spring
Choose the proper spring for the material being machined.
Spring Code Order Number     Typical Materials
    Large or Heavy Burrs may require a stronger spring
W   C12-E-0008 Aluminum, Brass, Magnesium
H   C12-E-0009 Grey Cast Iron, Nodular Iron
S   C12-E-0010 Carbon Steel, Free Machining Steel
Z   C12-E-0011 Long Chipping Steel, Stainless
Z1 C12-E-0012 Titanium, Hardened Steel, Nickel Alloy
Z2 C12-E-0013 Nickel Alloy, etc
Z3 C12-E-0014 Nickel Alloy, etc

Blade Options:
Blades are available from stock as front and back cutting (fab) or back cutting only (bco).
Blade Type Geo. Medium Blade TiAIN Coated Large Blade TiAIN Coated
20° Standard fab C12-M-0006-A C12-M-0001-A
bco C12-M-0026-A C12-M-0021-A
10° Flat Surfaces fab C12-M-0007-A C12-M-0002-A
bco C12-M-0027-A C12-M-0022-A
30° Uneven Surfaces fab C12-M-0009-A C12-M-0004-A
bco C12-M-0029-A C12-M-0024-A


How to Order:
The COFA tool provides different blade and spring options to create the
most effective tool for any application depending on the hole geometry and
type of material being machined. Blades sold separately for COFA-C series.

1. Choose the tool that best fits the hole diameter.
2. Choose the spring that best fits the material.
3. Choose the blade that best fits the hole geometry.






We reserve the right to make technical changes.