Series C12OS

COFA Deburring Series 12 OVERSIZE - METRIC
Ød		ØD1		ØD		Complete Tool with Blade
Min. Hole		Tool Diameter		Approx. Cutting Dia.		Front and Back	Back Only
mm	inches	mm	inches	mm	inches	Order Number	Order Number
20.5	*.807*	20.3	*.799*	21.8	*.858*	COFA12-20.5-☐	COFA12b-20.5-☐
20.8	*.819*	20.6	*.811*	22.2	*.874*	COFA12-20.8-☐	COFA12b-20.8-☐
21.0	*.827*	20.8	*.819*	22.4	*.882*	COFA12-21.0-☐	COFA12b-21.0-☐
21.2	*.835*	21.0	*.827*	22.6	*.890*	COFA12-21.2-☐	COFA12b-21.2-☐
21.5	*.847*	21.3	*.838*	23.0	*.906*	COFA12-21.5-☐	COFA12b-21.5-☐
22.0	*.866*	21.8	*.858*	23.4	*.921*	COFA12-22.0-☐	COFA12b-22.0-☐
22.5	*.886*	22.3	*.878*	23.9	*.941*	COFA12-22.5-☐	COFA12b-22.5-☐
22.8	*.898*	22.6	*.890*	24.2	*.953*	COFA12-22.8-☐	COFA12b-22.8-☐
23.0	*.905*	22.8	*.898*	24.4	*.960*	COFA12-23.0-☐	COFA12b-23.0-☐
23.2	*.914*	23.0	*.906*	24.6	*.969*	COFA12-23.2- ☐	COFA12b-23.2-☐
23.5	*.925*	23.3	*.917*	24.9	*.981*	COFA12-23.5-☐	COFA12b-23.5-☐
24.0	*.945*	23.8	*.937*	25.4	*1.000*	COFA12-24.0-☐	COFA12b-24.0-☐
24.5	*.965*	24.3	*.953*	25.9	*1.020*	COFA12-24.5-☐	COFA12b-24.5-☐
24.8	*.977*	24.6	*.969*	26.2	*1.031*	COFA12-24.8-☐	COFA12b-24.8-☐
25.0	*.984*	24.8	*.976*	26.6	*1.047*	COFA12-25.0-☐	COFA12b-25.0-☐
25.5	*1.004*	25.3	*.996*	26.9	*1.059*	COFA12-25.5-☐	COFA12b-25.5-☐
26.0	*1.024*	25.8	*1.016*	27.4	*1.079*	COFA12-26.0-☐	COFA12b-26.0-☐
26.5	*1.043*	26.3	*1.035*	27.9	*1.098*	COFA12-26.5-☐	COFA12b-26.5-☐
26.8	*1.055*	26.6	*1.047*	28.2	*1.110*	COFA12-26.8-☐	COFA12b-26.8-☐
27.0	*1.063*	26.8	*1.055*	28.4	*1.118*	COFA12-27.0-☐	COFA12b-27.0-☐
27.2	*1.071*	27.0	*1.063*	28.6	*1.126*	COFA12-27.2-☐	COFA12b-27.2-☐
27.5	*1.083*	27.3	*1.075*	28.9	*1.138*	COFA12-27.5-☐	COFA12b-27.5-☐
28.0	*1.102*	27.8	*1.094*	29.4	*1.157*	COFA12-28.0-☐	COFA12b-28.0-☐
28.5	*1.122*	28.3	*1.114*	29.9	*1.177*	COFA12-28.5-☐	COFA12b-28.5-☐
29.0	*1.142*	28.8	*1.134*	30.4	*1.197*	COFA12-29.0-☐	COFA12b-29.0-☐
29.5	*1.162*	29.3	*1.154*	30.9	*1.217*	COFA12-29.5-☐	COFA12b-29.5-☐
30.0	*1.181*	29.8	*1.173*	31.4	*1.236*	COFA12-30.0-☐	COFA12b-30.0-☐

COFA Deburring Series 12 OVERSIZE - Spare Parts
1	2	3	4
Retainer Block	Assembly Pin	Screw	Roll Pin
GH-C-E-0800	GH-C-V-0130	GH-H-S-0513	GH-C-E-0807
5	6	7
Blade	Spring	Fixture
See Below	See Below	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	GH-C-E-0361		Aluminum, Brass, Magnesium
H	GH-C-E-0362		Grey Cast Iron, Nodular Iron
S	GH-C-E-0363		Carbon Steel, Free Machining Steel
Z	GH-C-E-0364		Long Chipping Steel, Stainless
Z1	GH-C-E-0365		Titanium, Hardened Steel, Nickel Alloy
Z2	GH-C-E-0366		Nickel Alloy, etc
Z3	GH-C-E-0367		Nickel Alloy, etc

Blade Options: *Blades are available from stock as front and back cutting (fab)* or back cutting only (bco).**
Blade Code	Blade Type	Geo.	Series 12
	TiN 20° Standard	fab	GH-C-M-0007
b	TiN 20° Standard	bco	GH-C-M-0017
y	TiCN 10° Flat Surfaces	fab	GH-C-M-0447
yb	TiCN 10° Flat Surfaces	bco	GH-C-M-0457
x	TiN 30° Uneven Spec	fab	GH-C-M-0105
xb	TiN 30° Uneven Spec	bco	GH-C-M-0104

How to Order:
Ordering is simple. 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.

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

We reserve the right to make technical changes.