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Martindale CARBIDE Rotary Burs

     For the toughest metal-cutting jobs, for cutting abrasive materials and metals too hard or tough for high speed steel tools, Martindale Carbide Rotary Burs are the answer.
     Each tool is ground from solid tungsten-carbide by precision automatic machinery assuring exact contours and dimensions as well as perfect concentricity.

     Specials: The tool shapes and sizes listed below are considered stock tools, as they are the ones most commonly used. For particular operations, however, other shapes, or other sizes in the shapes listed, can easily be furnished upon receipt of your specifications.

Teeth: Standard cut tools have the following numbers of teeth per inch of circumference (more or fewer teeth can be furnished if desired).

Diam. Teeth per Inch Diam. Teeth per Inch
1/8" 31 1/2" 16
1/4" 25 5/8" 16
3/8" 20 3/4" 13
See: [Rotary Burs / Burs, Carbide / Small Burs], for recommended speeds and information on regrinding.
CYLINDER
No End Cut
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
RA2 1/8" 5/8" CABURA2
RA4 1/4" 5/8" CABURA4
RA6 3/8" 3/4" CABURA6
RA8 1/2" 1" CABURA8
RA10 5/8" 1" CABURA10
RA12 3/4" 1" CABURA12
(with end-cut - add 10%)

Cuts Available:

INVERTED CONE

  Cutting Surface  
Tool No. Diam. Length Catalog
Number
RT4 1/4" 5/16" CABURT4
RT8 1/2" 1/2" CABURT8
RT12 3/4" 5/8" CABURT12
(with end-cut - add 10%)
CYLINDER
Radius End
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
RB2 1/8" 1/2" CABURB2
RB4 1/4" 5/8" CABURB4
RB6 3/8" 3/4" CABURB6
RB8 1/2" 1" CABURB8
RB10 5/8" 1" CABURB10
RB12 3/4" 1" CABURB12


*STANDARD CUT (List Price)
*Furnished unless otherwise specified

CONE

  Cutting Surface    
Tool No. Diam. Length Incl.
Angle
Catalog
Number
RF4 1/4" 1" 10° CABURF4
RF6 3/8" 5/8" 28° CABURF6
RF8 1/2" 7/8" 28° CABURF8
RF10 5/8" 1" 31° CABURF10
TREE
Radius End
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
RC4 1/4" 5/8" CABURC4
RC6 3/8" 3/4" CABURC6
RC8 1/2" 1" CABURC8
RC10 5/8" 1" CABURC10
RC12 3/4" 1" CABURC12


DOUBLE CUT
(List Price)

CONE
14° Included Angle
  Cutting Surface    
Tool No. Diam. Length Incl.
Angle
Catalog
Number
RL4 1/4" 5/8" 14° CABURL4
RL5 5/16" 7/8" 14° CABURL5
RL6 3/8" 1-1/6" 14° CABURL6
RL8 1/2" 1-1/8" 14° CABURL8
RL10 5/8" 1-5/16" 14° CABURL10
RL12 3/4" 1-1/2" 14° CABURL12
TREE
Pointed End
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
RD4 1/4" 5/8" CABURD4
RD6 3/8" 3/4" CABURD6
RD8 1/2" 3/4" CABURD8
RD10 5/8" 1" CABURD10
RD12 3/4" 1" CABURD12


DIAMOND CUT (List + 20%)

CONE
60° and 90°

  Cutting Surface    
Tool No. Diam. Length Incl.
Angle
Catalog
Number
RS6 3/8" 5/16" 60° CABURS6
RS8 1/2" 7/16" 60° CABURS8
RS10 5/8" 9/16" 60° CABURS10
RS12 3/4" 11/16" 60° CABURS12
RG6 3/8" 3/16" 90° CBAURG6
RG8 1/2" 1/4" 90° CABURG8
RG10 5.8" 5/16" 90° CABURG10
RG12 3/4" 3/8" 90° CABURG12
BALL
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
RH2 1/8" 3/32" CABURH2
RH4 1/4" 7/32" CABURH4
RH6 3/8" 5/16" CABURH6
RH8 1/2" 7/16" CABURH8
RH10 5/8" 9/16" CABURH10
RH12 3/4" 11/16" CABURH12


FAST MILLCUT (List + 20%)

FLAME
  Cutting Surface  
Tool No Diam. Length Catalog
Number
RV5 5/16" 3/4" CABURV5
RV8 1/2" 1-1/4" CABURV8
RV10 5/8" 1-7/16" CABURV10
RV12 3/4" 1-5/8" CABURV12
OVAL
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
RJ4 1/4" 3/8" CABURJ4
RJ6 3/8" 5/8" CABURJ6
RJ8 1/2" 7/8" CABURJ8
RJ10 5/8" 1" CABURJ10
RJ12 3/4" 1" CABURJ12

SHANKS:
1/4" diam.
× 1-1/4" or more long, to give maximum of 2-1/4" overall length.

($20.00
Minimum Billing)

Martindale Carbide Rotary Burs
- SMALL DIAMETER CARBIDE ROTARY BURS -

Carbide, 3/32" Diam. Shank, 1-1/4" Overall Length

Tool No. XA-3/32 XB-3/32 XC-3/32 XD-3/32 XF-3/32 XH-3/32 XJ-3/32 XT-3/32
Diam. Cut 3/32" 3/32" 3/32" 3/32" 3/32" 3/32" 3/32" 3/32"
Length Cut 3/8" 3/8" 1/4" 1/4" 1/4" 3/32" 1/8" 1/8"
Catalog Number CABUXA332 CABUXB332 CABUXC332 CABUXD332 CABUXF332 CABUXH332 CABUXJ332 CABUXT332
Solid Carbide, 1/8" Diam. Shank, 1-1/2" Overall Length
Tool No. XA-1/8S XA-1/8 XB-1/8S XB-1/8 XC-1/8 XD-1/8 XF-1/8 XH-1/8S XH-1/8 XJ-1/8 XT-1/8 XV-1/8 XS-1/8 XG-1/8
Diam. Cut 3/32" 1/8" 3/32" 1/8" 1/8" 1/8" 1/8" 3/32" 1/8" 1/8" 1/8" 1/8" 1/8" 1/8"
Length Cut 7/16" 9/16" 7/16" 9/16" 1/2" 1/2" 1/2" 3/32" 1/8" 7/32" 3/16" 1/4" 60° 90°
Catalog Number CABU
XA332
CABU
XB332
CABU
XC332
CABU
XD332
CABU
XF332
CABU
XH332
CABU
XF18
CABU
XH18S
CABU
XH18
CABU
XJ18
CABU
XT18
CABU
XV18
CABU
XS18
CABU
XG18
Solid Carbide, 1/8" Diam. Shank, 1-1/2" Overall Length
Tool No. LA-3 LB-3 LC-3 LD-3 LF-3 LH-3 LJ-3 LT-3 LV-3
Diam. Cut 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16"
Length Cut 1/2" 1/2" 1/2" 1/2" 1/2" 5/32" 9/32" 1/4" 3/8"
Catalog Number CABULA3 CABULB3 CABULC3 CABULD3 CABULF3 CABULH3 CABULJ3 CABULT3 CABULV3
Solid Carbide Head, Steel Shank, 1/8" Diam. Shank, 1-1/4" Overall Length
Tool No. KA-4 KB-4 KC-4 KD-4 KF-4 KH-4 KJ-4 KT-4
Diam. Cut 1/4" 1/4" 1/4" 1/4" 1/4" 1/4" 1/4" 1/4"
Length Cut 1/2" 1/2" 1/2" 1/2" 1/2" 7/32" 3/8" 1/4"
Catalog Number CABUKA4 CABUKB4 CABUKC4 CABUKD4 CABUKF4 CABUKH4 CABUKJ4 CABUKT4
Solid Carbide, 3/16" Diam. Shank, 2" Overall Length
Tool No. XA-3/16 XB-3/16 XC-3/16 XD-3/16 XF-3/16 XH-3/16 XJ-3/16 XS-3/16 XG-3/16
Diam. Cut 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16" 3/16"
Length Cut 1/2" 1/2" 1/2" 1/2" 7/16" 5/32" 9/32" 60° 90°
Catalog Number CABUXA316 CABUXB316 CABUXC316 CABUXD316 CABUXF316 CABUXH316 CABUXJ316 CABUXS316 CABUXG316
Solid Carbide Head, 1/4" Diam. Shank, 2" Overall Length
Tool No. RA-4 RB-4 RC-4 RD-4 RF-4 RH-4 RJ-4 RT-4
Diam. Cut 1/4" 1/4" 1/4" 1/4" 1/4" 1/4" 1/4" 1/4"
Length Cut 5/8" 5/8" 5/8" 5/8" 1" 7/32" 3/8" 5/16"
Catalog Number CABURA4 CABURB4 CABURC4 CABURD4 CABURF4 CABURH4 CABURJ4 CABURT4

Solid Carbide Rotary Burs
- FOR SLOT CLEANING -

     Proven to be one of the handiest tools for getting at those hard-to-reach spots in armature and stator slots.  These special extra long and extremely hard tungsten carbide cutting tool cut right through and remove flash welds and other hard obstructions easily.  These tungsten carbide burs perform best at higher speeds in the 18,00 to 25,000 r.p.m. range, such as provided by the grinders shown under ( Rotary Burs / Grinders, Hand, Air / Electric).  The 4" or 6" Length × 1/4" diameter Solid Carbide Burs are generally recommended for slot cleaning.  Occasionally situations arise where a longer length bur or a slightly larger diameter are required.  In these situations we do offer carbide burs brazed onto longer steel shanks, as listed under (Rotary Burs / Carbide, Burs / Long Carbide Burs with Steel Shanks), with either 1/4" or 3/8" diameter heads.

Solid Carbide Burs ground from solid carbide rod.  Available with 1/4" diameter heads × 4" or 6" lengths, with 1/4" diameter shanks:

Part No.

Catalog Number

RB4-04 CABURB404
RB4-06 CABURB406
RC4-04 CABURC404
RC4-06 CABURC406
RD4-04 CABURD404
RD4-06 CABURD406
RH4-04 CABURH404
RH4-06 CABURH406
RJ4-04 CABURJ404
RJ4-06 CABURJ406

Solid Carbide Rotary Burs with Steel Shanks
Brazed to steel shanks.  Available with 1/4" or 3/8"  diam. heads, in various overall lengths,
and 1/4" diam. shanks:

Part No. Catalog Number
RB4-06S CABURB406S
RB4-08 CABURB408
RB4-09 CABURB409
RB4-10 CABURB409
RB4-12 CABURB412
RB4-15 CABURB415
RB4-18 CABURB418
RB6-04 CABURB604
RB6-06 CABURB606
RB6-08 CABURB608
RB6-10 CABURB610
RB6-12 CABURB612

Part No. Catalog Number
RC4-06S CABURC06S
RC4-08 CABURC408
RC4-10 CABURC410
RC4-12 CABURC412
RC4-15 CABURC415
RC4-18 CABURC418
RC6-04 CABURC604
RC6-06 CABURC606
RC6-08 CABURC608
RC6-10 CABURC610
RC6-12 CABURC612

Part No.

Catalog Number

RD4-06S CABURD406S
RD4-08 CABURD408
RD4-10 CABURD410
RD4-12 CABURD412
RD4-15 CABURD415
RD6-04 CABURD604
RD6-06 CABURD606
RD6-08 CABURD608
RD6-10 CABURD610
RD6-12 CABURD612

Part No. Catalog Number
RH4-06S CABURH406S
RH4-08 CABURH408
RH4-10 CABURH410
RH4-12 CABURH412
RH4-15 CABURH415
RH4-18 CABURH418
RH6-04 CABURH604
RH6-06 CABURH606
RB6-08 CABURH608
RB6-10 CABURH610
RB6-12 CABURH612

Part No. Catalog Number
RJ4-06S CABURJ406S
RJ4-08 CABURJ408
RJ4-10 CABURJ410
RJ4-12 CABURJ412
RJ4-15 CABURJ415
RJ4-18 CABURJ418
RJ6-04 CABURJ604
RJ6-06 CABURJ606
RJ6-08 CABURJ608
RJ6-10 CABURJ610
RJ6-12 CABURJ612

If the size you need isn't listed, please ask for a quotation.
Also see "Burs, High Speed Steel / Finning Burs" for longer High Speed Steel burs.

- CARBIDE ROTARY BUR SETS -

Carbide Bur Sets in the above 6 shapes are available in 8 different sizes
as indicated below and as detailed under Standard and Small Burs.

Sets Bur Diameter Shank Diameter Burs Included In Set Catalog Number
X-3/32 3/32" 3/32" XA-3/32, XB-3/32, XC-3/32, XD-3/32, XH-3/32, XJ-3/32 CABUX332
X-1/8 1/8" 1/8" XA-1/8, XB-1/8, XC-1/8, XD-1/8, XH-1/8, XJ-1/8 CABUX18
X-3/16 3/16" 3/16" XA-3/16, XB-3/16, XC-3/16, XD-3/16, XH-3/16, XJ-3/16 CABUX316
R-4 1/4" 1/4" RA-4, RB-4, RC-4, RD-4, RH-4, RJ-4 CABUR4
R-3/8 3/8" 1/4" RA6, RB6, RC6, RD6, RH6, RJ6 CABUR38
R-1/2 1/2" 1/4" RA8, RB8, RC8, RD8, RH8, RJ8  CABUR12
L3 3/16" 1/8" LA-3, LB-3, LC-3, LD-3, LH-3, LJ-3 CABUL3
K4 1/4" 1/8" KA-4, KB-4, KC-4, KD-4, KH-4, KJ-4 CABUK4

High Speed Steel Rotary Finning Burs

(All with 1/4" Shank)
These slender tough
high-speed burs are excellent for cleaning stator and armature
slots of electric motors and generators.  They are also used in Aluminum Foundries to remove flashing and sand debris from narrow channels.

Part No.

Catalog No.
075 HSBM075
085L HSBM085L
100 HSBM100
120 HSBM120
182S HSBM182S
196-L HSBM196L
5899 HSBM5899
6346 HSBM6346
6400 HSBM6400
6499 HSBM6499
6501-L HSBM6501L

         

No. 6349 is available in three lengths, all with 1/4" diameter × 2-1/2" long cutting surface.

  Catalog Number
Length Straight Cut Left-Hand Spiral
6" Overall HSBM634906S HSMB634906LHS
8" Overall HSBM634908S HSBM634908LHS
10" Overall HSBM634910S HSBM634910LHS
High Speed Steel Rotary Burs
- GROUND FROM SOLID -

     Designed for use at moderate speeds (such as is available from Flexible Shaft Machines, see Other Products / Flexible shaft Machines), these Rotary Burs are ground from High-Speed Steel blanks after hardening.  Grinding is done by precision automatic machinery assuring exact contours and dimensions as well as perfect concentricity.

CYLINDER
No End Cut
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
GA2 1/8" 1/2" HSBGA2
GA3 3/16" 1/2" HSBGA3
GA4 1/4" 1" HSBGA4
GA5 5/16" 1" HSBGA5
GA6 3/8" 1" HSBGA6
GA6L 3/8" 1-1/2" HSBGA6L
GA7 7/16" 1" HSBGA7
GA8 1/2" 1" HSBGA8
GA10 5/8" 1" HSBGA10
GA12 3/4" 3/4" HSBGA12
GA12L 3/4" 1" HSBGA12L
GA16 1" 1" HSBGA16
(with end-cut -
available at additional cost)
CYLINDER
Radius End
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
GB2 1/8" 1/2" HSBGB2
GB3 3/16" 1/2" HSBGB3
GB4 1/4" 1" HSBGB4
GB5 5/16" 1" HSBGB5
GB6 3/8" 1" HSBGB6
GB6L 3/8" 1-1/2" HSBGB6L
GB7 7/16" 1" HSBGB7
GB8 1/2" 1" HSBGB8
GB10 5/8" 1" HSBGB10
GB12 3/4" 1-1/4" HSBGB12
TREE
Radius End
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
GC4 1/4" 3/4" HSBGC4
GC6 3/8" 3/4" HSBGC6
GC8 1/2" 1-1/8" HSBGC8
GC10 5/8" 1-1/8" HSBGC10
GC12 3/4" 1-1/4" HSBGC12
GC18 1-1/8" 2" HSBGC18
TREE
Pointed End
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
GD4 1/4" 3/4" HSBGD4
GD6 3/8" 3/4" HSBGD6
GD8 1/2" 3/4" HSBGD8
GD8L 1/2" 1-1/8" HSBGD8L
GD10 5/8" 1" HSBGD10
GD18 1-1/8" 2" HSBGD18


CUTS AVAILABLE:

*STANDARD CUT
(List Price)

*Furnished unless otherwise specified.

DOUBLE CUT
(List Price)

FINE CUT & COARSE CUT
(available at additional cost)

 

SHANKS:

1/4" Diam. × 1-1/4" or more long, to give maximum of 2-1/4" overall length.

 

 

SPECIALS:

Submit specifications for any special Rotary Bur desired.  Quotation of price and delivery will be made promptly.

 

 

 

 

 

 

CONE
  Cutting Surface    
Tool No. Diam. Length Incl.
Angle
Catalog
Number
GF4 1/4" 1/2" 22° HSBGF4
GF4L 1/4" 1" 10° HSBGF4L
GF5 5/16" 3/4" 14° HSBGF5
GF6 3/8" 1" 14° HSBGF6
GF8 1/2" 1" 28° HSBGF8
GF10 5/8" 1" 31° HSBGF10
GF12 3/4" 1" 34° HSBGF12
 

 

 

BALL
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
GH2 1/8" 1/8" HSBGH2
GH3 3/16" 3/16" HSBGH3
GH4 1/4" 1/4" HSBGH4
GH5 5/16" 5/16" HSBGH5
GH6 3/8" 3/8" HSBGH6
GH7 7/16" 7/16" HSBGH7
GH8 1/2" 1/2" HSBGH8
GH10 5/8" 5/8" HSBGH10
GH12 3/4" 3/4" HSBGH12
GH16 1" 1" HSBGH16
 
OVAL
  Cutting Surface  
Tool No. Diam. Length Catalog
Number
GJ3 3/16" 5/16" HSBGJ3
GJ4 1/4" 1/2" HSBGJ4
GJ5 5/16" 1/2" HSBGJ5
GJ6 3/8" 5/8" HSBGJ6
GJ8 1/2" 7/8" HSBGJ8
GJ10 5/8" 1" HSBGJ10
GJ12 3/4" 1" HSBGJ12
GJ16 1" 1-3/8" HSBGJ16
 

 

CONE
60° and 90°
  Cutting Surface    
Tool No. Diam. Length Incl.
Angle
Catalog
Number
GS4 1/4" 3/16" 60° HSBGS4
GS6 3/8" 1/4" 60° HSBGS6
GS8 1/2'" 7/16" 60° HSBGS8
GS10 5/8" 1/2" 60° HSBGS10
GS12 3/4" 5/8" 60° HSBGS12
GS14 7/8" 3/4" 60° HSBGS14
GS16 1" 3/4" 60° HSBGS16
GG4 1/4 1/8" 90° HSBGG4
GG6 3/8" 3/16" 90° HSBGG6
GG8 1/2" 1/4" 90° HSBGG8
GG10 5/8" 5/16" 90° HSBGG10
GG12 3/4" 3/8" 90° HSBGG12
GG14 7/8" 7/16" 90° HSBGG14
GG16 1" 1/2" 90° HSBGG16
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