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SQUARE ENDMILLS Standard Standard Long Stub Length Double End Double End Stub 6 Flute BALL ENDMILLS Standard Standard Long Stub Length Double End Double End Stub OTHER ENDMILLS Roughers Corner Radius Drill Mills 2 Flute High Helix Taper Mills HP Quad Mill CARBIDE BURS Standard Burs Tire Burs CARBIDE DRILLS Standard Length 2 Flute Standard Length 3 Flute COUNTERSINKS 60, 82, 90 Degree OUR FAVORITE LINKS

Bur Shapes

The bur shapes are as follows:

SA/SB
SC
SD
SE
SF
SG
SH
SJ
SK
SL
SM
SN

Available Cuts:

Singlecut
Doublecut
Diamond Cut
Chipbreaker
Alumacut

Recommended Use

Single Cut - general purpose tool designed for cast iron, steel, some copper & brass, and other ferrous materials. It will give good material removal & good workpiece finishes.

Double Cut - allows for rapid stock removal in harder materials. Reduced pulling action designed to improve operator control. Chip sizes are reduced & can be used at slower than normal speeds.

Diamond Cut - this is very effective in heat treated & tough alloy steels. It produces an extremely small chip. It offers good operator control w/ good stock removal at the surface of finish.

Chip Breaker - the addition of a chip breaker will reduce sliver size & improve operator control at a slightly reduced surface finish as compared to the Single Cut.

Alumacut - for use in non-ferrous & non-metallic materials. Designed for rapid stock removal, with minimum chip loading.

 

GENERAL BUR APPLICATIONS

Materials
Doublecut
Singlecut
Alumacut
Diamondcut
Chipbreak

Aluminum

.
.

X

X
.

Brass, Bronze, Copper

X

X
.
.

X

Fiberglass

.
.
.

X
.

Cast Iron

X

X
.

X
.

Plastics

.
.

X

X
.

Steel, 40-55rc

X

X
.

X

X

Steel, 55-60rc

X

X
.

X

X

Steel, carbon

X

X
.
.

X

Steel nickle, chrome

X

X
.

X

X

Steel stainless

X

X
.
.

X

Steel weldments

X

X
.
.

X

Titanium

X

X
.
.

X

Zinc

.
.

X
.
.

X = Okay to Use


GENERAL BUR SPEED RECOMMENDATIONS

Bur Diameter RPM
Bur Diameter
RPM
1/8 or 3mm Solid Carbide
45,000-50,000
3/16 or 4mm Solid Carbide
35,000-40,000
3/16 Carbide Head Brazed to- 1/8 or 3mm Steel Shank
30,000-35,000
1/4 or 6mm Solid Carbide
30,000-35,000
Carbide Head Brazed to- 1/8 or 3mm Steel Shank
25,000-30,000
5/16 Carbide Head Brazed to- 1/4 or 6mm Steel Shank
25,000-30,000
3/8 Carbide Head Brazed to- 1/4 or 6mm Steel Shank
25,000-30,000
7/16 Carbide Head Brazed to - 1/4 or 6mm Steel Shank
20,000-25,000
1/2 Carbide Head Brazed to- 1/4 or 6mm Steel Shank
20,000-25,000
5/8 Carbide Head Brazed to- 1/4 or 6mm Steel Shank
15,000-20,000
3/4 Carbide Head Brazed to- 1/4 or 6mm Steel Shank
15,000-20,000
1" Carbide Head Brazed to- 1/4 or 6mm Steel Shank
12,000-18,000

NOTE: The above chart is a general and approximate recommendation. Variations to achieve desired results may be necessary. Long shank burs should be used at reduced speeds.

 

 

 
 
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