Burraway ®

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Taking the edge off

Burraway tools suit a variety of machines from manual to CNC – and can even be used in a hand-drill with excellent results.

They are available in a range of inch and metric sizes ranging from 0.093” (3/32”) to 2 inches or from 2mm to 50mm as standard, and a range of standard sizes for both inch and metric sizes and an assortment of blades are in stock. (See below for tool specifications).

The Burraway tools feature an inexpensive, replaceable cutting blade which adjusts to control the amount of edge break and can be easily replaced within a few seconds. A range of cutting-edge geometry options to suit different materials are offered, and as standard, tools are supplied already fitted with a double acting blade. The crowned and polished top surface of the blade will not mar the inside surface of the hole.

Supporting a simple method for easily adjustable cutting pressure, the corresponding adjustment screws, will match according to the tool as covered by our inch and metric programs.

How Burraway tools work:

1 Upon entry, spring tension holds the cutting blade in the extended position as it removes the burr on the front of the hole.
2 As the feed load increases, the pre-set spring tension is exceeded and the blade retracts automatically as the tool passes through the workpiece.
3 Spring tension again causes the blade to extend as it emerges from the ID of the part; the burr is removed on the back side of the hole on the return stroke.
Feeds & Speeds »

Design features

There three types of Burraway tools – Types A, B & C – that correspond to differing diameters. All Burraway tools operate on the same basic principle, but vary slightly in design as determined by tool size:

Type A tools (inch program; for hole sizes from .093 through .203 in.) and Type MA tools (metric program; sizes from 2 to 5mm) are a two-piece construction (arbor assembly and adapter). All Type A and MA arbor assemblies are interchangeable with their respective shank adapters.
Type B tools (inch program; for hole sizes from .218 through .750 in.) and Type MB tools (metric program; sizes from 5.5 through 19mm) are a single-piece construction.
Type C tools (inch program; for hole sizes from .750 through 2 in.) and Type MC tools (metric program; sizes from 20 through 50mm) are also a single-piece construction.

A tension adjustment mechanism controls the amount of edge break for consistent results from piece to piece. Types A, MA, B, and MB tools have a tension adjustment screw located in the shank; Types C and MC tools control depth of cut with a tension adjustment rod.

Burraway Deburring Tool by Cogsdill

Simple Adjustments. Multiple Options.

A one-pass solution for your hole deburring problems.

Burraway Deburring Tool tension adjustment

Burraway video highlights:

To see the full range of Cogsdill videos please visit YouTube

Cogsdill Deburring tools

Changing Blades on Burraway tooling

Burraway Catalog

We hold a range of metric and imperial tools and assortment of blades in stock.
Available for immediate shipping!

A variety of tool designs to meet your needs

Standard Burraway tools are available for both inch and metric hole sizes. Standard drill sizes are available from stock.

Custom tools – larger sizes, altered standards, or special designs – can also be supplied to suit your particular requirements. Please furnish a part print and request a quotation.

Burraway Kit

Our Burraway Kit contains five deburring tools in popular hole sizes:

1/8 in. • 5/32 in. • 3/16 in. • 7/32 in. • 1/4 in.

A replacement blade for each tool is included. The kit is packaged in a durable box. The Burraway Kit enables you to have on hand the solution to burr removal problems for hole sizes most frequently encountered.

PART #: BURRAWAY-KIT

Standard Tool Specifications

Inch Program

Type A

HOLE
SIZE
DEC.
EQUIV
DIM.
A
DIM.
B
DIM.
C
COMPLETE
TOOL #
BLADE # ARBOR # ARBOR
ASSEMBLY#
PLUNGER # SPRING # ADAPTER #
3/32 0.093 3.37 0.45 0.28 YA-00938 YA-DAP-3/32* YA-00938-D01 YA-00938-ARB YA-01250-D04 YA-1-D05 YA-AA**
7/64 0.109 3.37 0.45 0.28 YA-01094 YA-DAP-3/32* YA-01094-D01 YA-01094-ARB YA-01250-D04 YA-1-D05 YA-AA**
1/8 0.125 3.37 0.45 0.25 YA-01250 YA-DAP-1/8 YA-01250-D01 YA-01250-ARB YA-01250-D04 YA-1-D05 YA-AA**
9/64 0.140 3.37 0.45 0.25 YA-01406 YA-DAP-1/8 YA-01406-D01 YA-01406-ARB YA-01250-D04 YA-1-D05 YA-AA**
5/32 0.156 3.37 0.45 0.25 YA-01562 YA-DAP-5/32 YA-01562-D01 YA-01562-ARB YA-01250-D04 YA-1-D05 YA-AA**
11/64 0.171 3.37 0.45 0.25 YA-01719 YA-DAP-5/32 YA-01719-D01 YA-01719-ARB YA-01250-D04 YA-1-D05 YA-AA**
3/16 0.187 4.12 0.72 0.44 YA-01875 YA-DAP-3/16 YA-01875-D01 YA-01875-ARB YA-01250-D04 YA-1-D05 YA-AA**
13/64 0.203 4.12 0.72 0.44 YA-02031 YA-DAP-3/16 YA-02031-D01 YA-02031-ARB YA-01875-D04 YA-1-D05 YA-AA**


All dimensions above are in inches. Intermediate sizes are available upon request.
All tools assembled with a Double-Acting Positive 4° rake (DAP) blade unless otherwise specified.
If you require a different blade, add -M to the complete tool number and specify blade option required.
For more information regarding blade options (including carbide) to suit all materials and applications, please refer to Burraway Blade Data below.
Optional Light Duty (LD) spring available upon request when less tension is required for softer materials.
* We suggest full arbor assembly replacement instead of blade replacement due to the design of the blade in these small sizes.
** Complete with adjustment & lock screws

Type B

HOLE
SIZE
DEC.
EQUIV
DIM.
A
DIM.
B
DIM.
C
COMPLETE
TOOL #
BLADE # ARBOR # PLUNGER # SPRING # ADJ. SCREW#
7/32 0.218 4.50 0.87 0.56 YB-02188 YB-DAP-1 YB-02188-D01 YB-02188-D04 YB-1-D05 YB-1-D06
15/64 0.234 4.50 0.87 0.56 YB-02344 YB-DAP-1 YB-02344-D01 YB-02344-D04 YB-1-D05 YB-1-D06
1/4 0.250 4.50 0.87 0.56 YB-02500 YB-DAP-1 YB-02500-D01 YB-02500-D04 YB-1-D05 YB-1-D06
17/64 0.265 4.50 0.87 0.56 YB-02656 YB-DAP-1 YB-02656-D01 YB-02500-D04 YB-1-D05 YB-1-D06
9/32 0.281 4.50 0.87 0.56 YB-02812 YB-DAP-1 YB-02812-D01 YB-02500-D04 YB-1-D05 YB-1-D06
19/64 0.296 4.50 0.96 0.68 YB-02969 YB-DAP-2 YB-02969-D01 YB-03125-D04 YB-2-D05 YB-2-D06
5/16 0.312 4.50 0.96 0.68 YB-03125 YB-DAP-2 YB-03125-D01 YB-03125-D04 YB-2-D05 YB-2-D06
21/64 0.328 4.50 0.96 0.68 YB-03281 YB-DAP-2 YB-03281-D01 YB-03438-D04 YB-2-D05 YB-2-D06
11/32 0.343 4.50 0.96 0.68 YB-03438 YB-DAP-2 YB-03438-D01 YB-03438-D04 YB-2-D05 YB-2-D06
23/64 0.359 5.00 1.00 0.68 YB-03594 YB-DAP-3 YB-03594-D01 YB-03750-D04 YB-2-D05 YB-2-D06
3/8 0.375 5.00 1.00 0.68 YB-03750 YB-DAP-3 YB-03750-D01 YB-03750-D04 YB-3-D05 YB-3-D06
25/64 0.390 5.00 1.00 0.68 YB-03906 YB-DAP-3 YB-03906-D01 YB-04062-D04 YB-3-D05 YB-3-D06
13/32 0.406 5.00 1.00 0.68 YB-04062 YB-DAP-3 YB-04062-D01 YB-04062-D04 YB-3-D05 YB-3-D06
27/64 0.421 5.50 1.09 0.72 YB-04219 YB-DAP-3-1/2 YB-04219-D01 YB-04375-D04 YB-4-D05 YB-4-D06
7/16 0.437 5.50 1.09 0.72 YB-04375 YB-DAP-3-1/2 YB-04375-D01 YB-04375-D04 YB-4-D05 YB-4-D06
29/64 0.453 5.50 1.09 0.72 YB-04531 YB-DAP-3-1/2 YB-04531-D01 YB-04688-D04 YB-4-D05 YB-4-D06
15/32 0.468 5.50 1.09 0.72 YB-04688 YB-DAP-3-1/2 YB-04688-D01 YB-04688-D04 YB-4-D05 YB-4-D06
31/64 0.484 5.50 1.09 0.72 YB-04844 YB-DAP-3-1/2 YB-04844-D01 YB-05000-D04 YB-4-D05 YB-4-D06
1/2 0.500 5.50 1.09 0.72 YB-05000 YB-DAP-3-1/2 YB-05000-D01 YB-05000-D04 YB-4-D05 YB-4-D06
33/64 0.515 5.50 1.09 0.72 YB-05156 YB-DAP-3-1/2 YB-05156-D01 YB-05312-D04 YB-4-D05 YB-4-D06
17/32 0.531 5.50 1.09 0.72 YB-05312 YB-DAP-3-1/2 YB-05312-D01 YB-05312-D04 YB-4-D05 YB-4-D06
35/64 0.546 6.44 1.31 0.90 YB-05469 YB-DAP-4 YB-05469-D01 YB-05625-D04 YB-5-D05 YB-5-D06
9/16 0.562 6.44 1.31 0.90 YB-05625 YB-DAP-4 YB-05625-D01 YB-05625-D04 YB-5-D05 YB-5-D06
37/64 0.578 6.44 1.31 0.90 YB-05781 YB-DAP-4 YB-05781-D01 YB-05938-D04 YB-5-D05 YB-5-D06
19/32 0.593 6.44 1.31 0.90 YB-05938 YB-DAP-4 YB-05938-D01 YB-05938-D04 YB-5-D05 YB-5-D06
39/64 0.609 6.44 1.31 0.90 YB-06094 YB-DAP-4 YB-06094-D01 YB-06250-D04 YB-5-D05 YB-5-D06
5/8 0.625 6.44 1.31 0.90 YB-06250 YB-DAP-4 YB-06250-D01 YB-06250-D04 YB-5-D05 YB-5-D06
41/64 0.640 6.44 1.31 0.90 YB-06406 YB-DAP-4 YB-06406-D01 YB-06562-D04 YB-5-D05 YB-5-D06
21/32 0.656 6.44 1.31 0.90 YB-06562 YB-DAP-4 YB-06562-D01 YB-06562-D04 YB-5-D05 YB-5-D06
43/64 0.671 6.44 1.31 0.90 YB-06719 YB-DAP-4 YB-06719-D01 YB-06875-D04 YB-5-D05 YB-5-D06
11/16 0.687 6.44 1.31 0.90 YB-06875 YB-DAP-4 YB-06875-D01 YB-06875-D04 YB-5-D05 YB-5-D06
3/4 0.750 6.44 1.31 0.90 YB-07500 YB-DAP-4 YB-07500-D01 YB-07500-D04 YB-5-D05 YB-5-D06
7/8 0.875 6.75 1..00 1.56 YB-08750 YB-DAP-5 YB-08750-D01 YB-08750-D04 YB-7-D05 YB-7-D06
1 1.00 6.75 1.00 1.56 YB-10000 YB-DAP-5 YB-10000-D01 YB-10000-D04 YB-7-D05 YB-7-D06


All dimensions above are in inches. Intermediate sizes are available upon request.
All tools assembled with a Double-Acting Positive 4° rake (DAP) blade unless otherwise specified.
If you require a different blade, add -M to the complete tool number and specify blade option required.
For more information regarding blade options (including carbide) to suit all materials and applications, please refer to Burraway Blade Data below.
Optional Light Duty (LD) spring available upon request when less tension is required for softer materials.

Type C

HOLE SIZE DEC. EQUIV COMPLETE TOOL # BLADE # ARBOR # ADJ. ROD # ADJ. SCREW #
3/4 0.750 YC-07500 YC-DAP-110 YC-07500-D01 YC-110-D03 YC-110-D04
13/16 0.812 YC-08125 YC-DAP-110 YC-08125-D01 YC-110-D03 YC-110-D04
7/8 0.875 YC-08750 YC-DAP-110 YC-08750-D01 YC-110-D03 YC-110-D04
15/16 0.937 YC-09375 YC-DAP-110 YC-09375-D01 YC-110-D03 YC-110-D04
1 1.000 YC-10000 YC-DAP-110 YC-10000-D01 YC-110-D03 YC-110-D04
1-1/16 1.062 YC-10625 YC-DAP-110 YC-10625-D01 YC-110-D03 YC-110-D04
1-1/8 1.125 YC-11250 YC-DAP-110 YC-11250-D01 YC-110-D03 YC-110-D04
1-3/16 1.187 YC-11875 YC-DAP-110 YC-11875-D01 YC-110-D03 YC-110-D04
1-1/4 1.250 YC-12500 YC-DAP-110 YC-12500-D01 YC-110-D03 YC-110-D04
1-5/16 1.312 YC-13125 YC-DAP-110 YC-13125-D01 YC-110-D03 YC-110-D04
1-3/8 1.375 YC-13750 YC-DAP-110 YC-13750-D01 YC-110-D03 YC-110-D04
1-1/2 1.500 YC-15000 YC-DAP-110 YC-15000-D01 YC-110-D03 YC-110-D04
1-5/8 1.625 YC-16250 YC-DAP-110 YC-16250-D01 YC-110-D03 YC-110-D04
1-3/4 1.750 YC-17500 YC-DAP-110 YC-17500-D01 YC-110-D03 YC-110-D04
1-7/8 1.875 YC-18750 YC-DAP-110 YC-18750-D01 YC-110-D03 YC-110-D04
2 2.000 YC-20000 YC-DAP-110 YC-20000-D01 YC-110-D03 YC-110-D04


All dimensions above are in inches. Intermediate sizes, and tools for diameters larger than shown, are available upon request.
All tools assembled with a Double-Acting Positive 4° rake (DAP) blade unless otherwise specified.
If you require a different blade, add -M to the complete tool number and specify blade option required.
For more information regarding blade options (including carbide) to suit all materials and applications, please refer to Burraway Blade Data below.
Optional Light Duty (LD) spring available upon request when less tension is required for softer materials.

Metric Program

Type MA

HOLE
SIZE
DIM.
A
DIM.
B
DIM.
C
COMPLETE
TOOL #
BLADE # ARBOR # ARBOR
ASSEMBLY#
PLUNGER # SPRING # ADAPTER #
2.0 84.6 11.4 6.4 MYA-2.0 YA-DAP-2.0MM* MYA-2.0-D01 MYA-2.0-ARB YA-01250-D04 YA-1-D05 MYA-AA**
2.3 84.6 11.4 6.4 MYA-2.3 YA-DAP-3/32* MYA-2.3-D01 MYA-2.3-ARB YA-01250-D04 YA-1-D05 MYA-AA**
2.5 84.6 11.4 6.4 MYA-2.5 YA-DAP-3/32* MYA-2.5-D01 MYA-2.5-ARB YA-01250-D04 YA-1-D05 MYA-AA**
3.0 84.6 11.4 6.4 MYA-3.0 YA-DAP-3.0MM MYA-3.0-D01 MYA-3.0-ARB YA-01250-D04 YA-1-D05 MYA-AA**
3.5 84.6 11.4 6.4 MYA-3.5 YA-DAP-1/8 MYA-3.5-D01 MYA-3.5-ARB YA-01250-D04 YA-1-D05 MYA-AA**
4.0 84.6 11.4 6.4 MYA-4.0 YA-DAP-5/32 MYA-4.0-D01 MYA-4.0-ARB YA-01250-D04 YA-1-D05 MYA-AA**
4.5 103.4 18.3 11.2 MYA-4.5 YA-DAP-3/16 MYA-4.5-D01 MYA-4.5-ARB YA-01875-D04 YA-1-D05 MYA-AA**
5.0 103.4 18.3 11.2 MYA-5.0 YA-DAP-3/16 MYA-5.0-D01 MYA-5.0-ARB YA-01875-D04 YA-1-D05 MYA-AA**


All dimensions above are in millimetres. Intermediate sizes are available upon request.
All tools assembled with a Double-Acting Positive 4° rake (DAP) blade unless otherwise specified.
If you require a different blade, add -M to the complete tool number and specify blade option required.
For more information regarding blade options (including carbide) to suit all materials and applications, please refer to Burraway Blade Data below.
Optional Light Duty (LD) spring available upon request when less tension is required for softer materials.
* We suggest full arbor assembly replacement instead of blade replacement due to the design of the blade in these small sizes.
** Complete with adjustment & lock screws

Type MB

HOLE
SIZE
DIM.
A
DIM.
B
DIM.
C
COMPETE
TOOL #
BLADE # ARBOR # PLUNGER # SPRING # ADJ. SCREW#
5.5 114 22.1 14.2 MYB-5.5 YB-DAP-1 MYB-5.5-D01 YB-02188-D04 YB-1-D05 MYB-1-D06
6.0 114 22.1 14.2 MYB-6.0 YB-DAP-1 MYB-6.0-D01 YB-02344-D04 YB-1-D05 MYB-1-D06
6.5 114 22.1 14.2 MYB-6.5 YB-DAP-1 MYB-6.5-D01 YB-02500-D04 YB-1-D05 MYB-1-D06
7.0 114 22.1 14.2 MYB-7.0 YB-DAP-1 MYB-7.0-D01 YB-02500-D04 YB-1-D05 MYB-1-D06
7.5 114 24.4 17.3 MYB-7.5 YB-DAP-2 MYB-7.5-D01 YB-03125-D04 YB-2-D05 MYB-2-D06
8.0 114 24.4 17.3 MYB-8.0 YB-DAP-2 MYB-8.0-D01 YB-03125-D04 YB-2-D05 MYB-2-D06
8.5 114 24.4 17.3 MYB-8.5 YB-DAP-2 MYB-8.5-D01 YB-03438-D04 YB-2-D05 MYB-2-D06
9.0 127 25.4 17.3 MYB-9.0 YB-DAP-3 MYB-9.0-D01 YB-03750-D04 YB-3-D05 MYB-3-D06
9.5 127 25.4 17.3 MYB-9.5 YB-DAP-3 MYB-9.5-D01 YB-03750-D04 YB-3-D05 MYB-3-D06
10.0 127 25.4 17.3 MYB-10.0 YB-DAP-3 MYB-10.0-D01 YB-04062-D04 YB-3-D05 MYB-3-D06
10.5 140 26.2 18.3 MYB-10.5 YB-DAP-3-1/2 MYB-10.5-D01 YB-04375-D04 YB-4-D05 MYB-4-D06
11.0 140 26.2 18.3 MYB-11.0 YB-DAP-3-1/2 MYB-11.0-D01 YB-04375-D04 YB-4-D05 MYB-4-D06
11.5 140 26.2 18.3 MYB-11.5 YB-DAP-3-1/2 MYB-11.5-D01 YB-04688-D04 YB-4-D05 MYB-4-D06
12.0 140 26.2 18.3 MYB-12.0 YB-DAP-3-1/2 MYB-12.0-D01 YB-04688-D04 YB-4-D05 MYB-4-D06
12.5 140 26.2 18.3 MYB-12.5 YB-DAP-3-1/2 MYB-12.5-D01 YB-05000-D04 YB-4-D05 MYB-4-D06
13.0 140 26.2 18.3 MYB-13.0 YB-DAP-3-1/2 MYB-13.0-D01 YB-05312-D04 YB-4-D05 MYB-4-D06
13.5 140 26.2 18.3 MYB-13.5 YB-DAP-3-1/2 MYB-13.5-D01 YB-05312-D04 YB-4-D05 MYB-4-D06
14.0 165 33.3 22.9 MYB-14.0 YB-DAP-4 MYB-14.0-D01 YB-05625-D04 YB-5-D05 MYB-5-D06
14.5 165 33.3 22.9 MYB-14.5 YB-DAP-4 MYB-14.5-D01 YB-05938-D04 YB-5-D05 MYB-5-D06
15.0 165 33.3 22.9 MYB-15.0 YB-DAP-4 MYB-15.0-D01 YB-05938-D04 YB-5-D05 MYB-5-D06
15.5 165 33.3 22.9 MYB-15.5 YB-DAP-4 MYB-15.5-D01 YB-06250-D04 YB-5-D05 MYB-5-D06
16.0 165 33.3 22.9 MYB-16.0 YB-DAP-4 MYB-16.0-D01 YB-06562-D04 YB-5-D05 MYB-5-D06
16.5 165 33.3 22.9 MYB-16.5 YB-DAP-4 MYB-16.5-D01 YB-06562-D04 YB-5-D05 MYB-5-D06
17.0 165 33.3 22.9 MYB-17.0 YB-DAP-4 MYB-17.0-D01 YB-06875-D04 YB-5-D05 MYB-5-D06
17.5 165 33.3 22.9 MYB-17.5 YB-DAP-4 MYB-17.5-D01 YB-06875-D04 YB-5-D05 MYB-5-D06
18.0 165 33.3 22.9 MYB-18.0 YB-DAP-4 MYB-18.0-D01 YB-07187-D04 YB-5-D05 MYB-5-D06
18.5 165 33.3 22.9 MYB-18.5 YB-DAP-4 MYB-18.5-D01 YB-07500-D04 YB-5-D05 MYB-5-D06
19.0 165 33.3 22.9 MYB-19.0 YB-DAP-4 MYB-19.0-D01 YB-07500-D04 YB-5-D05 MYB-5-D06


All dimensions above are in millimetres. Intermediate sizes are available upon request.
All tools assembled with a Double-Acting Positive 4° rake (DAP) blade unless otherwise specified.
If you require a different blade, add -M to the complete tool number and specify blade option required.
For more information regarding blade options (including carbide) to suit all materials and applications, please refer to Burraway Blade Data below.
Optional Light Duty (LD) spring available upon request when less tension is required for softer materials.

Type MC

HOLE SIZE COMPLETE TOOL # BLADE # ARBOR # ADJ. ROD # ADJ. SCREW #
20.0 MYC-20.0 YC-DAP-110 MYC-20.0-D01 YC-110-D03 MYC-110-D04
25.0 MYC-25.0 YC-DAP-110 MYC-25.0-D01 YC-110-D03 MYC-110-D04
30.0 MYC-30.0 YC-DAP-110 MYC-30.0-D01 YC-110-D03 MYC-110-D04
35.0 MYC-35.0 YC-DAP-110 MYC-35.0-D01 YC-110-D03 MYC-110-D04
40.0 MYC-40.0 YC-DAP-110 MYC-40.0-D01 YC-110-D03 MYC-110-D04
45.0 MYC-45.0 YC-DAP-110 MYC-45.0-D01 YC-110-D03 MYC-110-D04
50.0 MYC-50.0 YC-DAP-110 MYC-50.0-D01 YC-110-D03 MYC-110-D04


All dimensions above are in millimeters. Intermediate sizes, and tools for diameters larger than shown, are available upon request.
All tools assembled with a Double-Acting Positive 4° rake (DAP) blade unless otherwise specified.
If you require a different blade, add -M to the complete tool number and specify blade option required.
For more information regarding blade options (including carbide) to suit all materials and applications, please refer to Burraway Blade Data below.
Optional Light Duty (LD) spring available upon request when less tension is required for softer materials.

Blade Data

Speed / Feed Recommendations and Blade Rake Angle Options

Burraway tools are furnished with Double-Acting High Speed Steel (HSS) blades for burr removal on both the front and back sides of the hole as standard. Blades for front-cutting or back-cutting only are available from stock at no additional charge. Various blade rake angles and spring tension options are available and recommended for deburring specific material types. Carbide-tipped blades are available upon request for nominal hole sizes of 3/16 inch (4.76mm) and larger. HSS with TiN (titanium Nitride) coated blades are also available.

  • Positive rake – Ideal for steels and stainless steels
  • Negative rake – Ideal for softer materials such as brass or hard plastics
  • Neutral rake – Ideal for aluminum

Double-Acting (DA)
For deburring both front and back of holes

Back-Acting (BA)
For deburring back of hole only

Front-Acting (FA)
For deburring front of hole only

MATERIAL HSS BLADES CARBIDE BLADES (0° ONLY) BLADE STYLE
RECOMMENDATION
SFM FEED (IPR) SFM FEED (IPR)
Machine Steel 80-130 .005-.008 240-270 .005-.008 4° Positive Rake Blade (DAP, BAP or FAP)
Tool Steel 40-50 .005-.008 60-120 .005-.008 4° Positive Rake Blade (DAP, BAP or FAP)
Steel Forgings 40-50 .005-.008 60-120 .005-.008 4° Positive Rake Blade (DAP, BAP or FAP)
Malleable Iron 80-90 .005-.008 80-180 .005-.008 4° Positive Rake Blade (DAP, BAP or FAP)
Monel Metal 30-50 .005-.008 80-180 .005-.008 4° Positive Rake Blade (DAP, BAP or FAP)
Stainless Steel 30-50 .005-.008 80-250 .005-.008 4° Positive Rake Blade (DAP, BAP or FAP)
Titanium 25-45 .005-.008 80-250 .005-.008 4° Positive Rake Blade (DAP, BAP or FAP)
Cast Iron 40-60 .005-.008 105-240 .008-.012 0° Neutral Rake Blade (DAZ, BAZ or FAZ)
Aluminium 100-160 .005-.008 250-400 .008-.012 0° Neutral Rake Blade (DAZ, BAZ or FAZ)
Brass & Bronze 100-300 .005-.010 175-300 .006-.010 4° Negative Rake Blade (DAN, BAN or FAN)
Plastic / Nylatron 100-300 .005-.010 175-300 .006-.010 4° Negative Rake Blade (DAN, BAN or FAN)
Composites Not Recommended 150-200 .001-.010 0° Neutral Rake Blade (DAZ, BAZ or FAZ)


All tools assembled with a Double-Acting Positive 4° rake (DAP) blade unless otherwise specified.
Coated blades available upon request. Please contact Cogsdill for pricing and availability.
For Carbide Blades 3MM & 1/8 series and above, specify “C” in place of the three letter blade style (DAP, etc). Example: YA-DAP-1/8 carbide blade is coded “YA-C-1/8”.
Above noted speeds and feeds are basic guidelines and may vary per application

Feed / Speed Formulas: Inches Metric
  RPM = (3.82 X SFM) ÷ Diameter   RPM = (318 X M/min) ÷ Diameter
  SFM = 0.262 X Diameter X RPM   M/Min = (RPM X Diameter) ÷ 318
  IPM = IPR (feed) x RPM (speed)   Mm/Min = RPM X Mm/Rev

Blade Replacement

See video on how to change blades »

Type A / Type B Tooling

Blade replacement is performed with ease for tools from .118 (3.0mm) and larger. When the tension adjustment screw located at the end of the shank is loosened, the open ended slot allows the blade to slide out freely. The replacement blade can be installed and the adjustment screw retightened back to the desired spring tension.

Type C Tooling

For Type C tooling, loosen the tension adjustment screw located on the arbor OD and slide out both the blade and the tension adjustment rod. Replace in reverse order making sure the adjustment screw is seated securely in the notched area at the blade rear.

YA-00938, YA-01094 / MYA-2.0, MYA-2.3, & MYA-2.5 Tooling

Burraway blades for nominal tool sizes 3/32 & 7/64 (.093 & .109) in our imperial (inch) program, and blades for 2.0, 2.3, & 2.5 mm tools in our metric program are designed with a pinhole for assembly instead of the slotted blade design. The open-ended slot is not feasible in this size range due to the small blade size. The blade can only be replaced by removing the pivot pin from the arbor, which can cause damage or breakage. We do not recommend blade replacement in these smallest tool sizes. We recommend that the entire arbor assembly be replaced, which consists of the blade, arbor, and plunger.

Tool Adjustment

And Operating Recommendations

Versatile and easy to use

The Burraway can be used on portable power tools and drill motors, drill presses, automatic equipment, CNC machines, or on virtually any type of shop equipment. No special operator skills are required.

Fast and easy adjustment

The amount of stock removed will vary with the hardness of the material. Adjust the set screw in the shank end of the tool to obtain the desired edge break. (Caution: Be careful not to over-adjust; if the spring is compressed to a solid condition, the blade will not be able to retract.) If adjustment fails to produce the desired results, a different blade rake angle or a light-duty spring may be required. Please submit part prints for development of the most efficient tooling for the application.

Blade life and regrinding

Burraway blades generally last about four to ten times longer than the drill used to make the hole. Due to the low cost of replacement blades, most of our customers prefer to replace worn blades with new ones.

However, the blades can be reground and reused. Blades can generally take from five to ten regrinds of .010 inch (0.25mm) each before they must be discarded.

Burraway regrinding clearance angles diagram »

Tool maintenance

The Burraway tool should be inspected periodically for chips, grit, and foreign particles in the slot from which the blade projects. Clean as necessary.

Cross-hole deburring

Burraway tools will tend to cut an elliptical chamfer when deburring a hole drilled through the wall of a larger hole (i.e. the amount of edge break will be inconsistent). If the ratio of the main bore diameter “B” to the cross-hole diameter “A” is less than 3/1 (refer to diagram), the Burraway is not recommended. If the ratio is 3/1 or greater, the standard Burraway tool should be tested and may provide satisfactory results. If not, consider using a tool with a special Burraway blade with a 45° angle, run at speeds of 40-100 RPM; contact our engineering department. If the ratio is questionable, our Burr-Off tool may be considered. While it will tend to cut a greater ellipse, it will also resist breakage on steep side walls. Neither the Burraway nor the Burr-Off is recommended for holes that do not intersect squarely or diametrically.

Cross-hole deburring diagram »

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