Electroplated Diamond Mandrels
Electroplated Diamond Mandrels – Precision ID Grinding & Finishing | Braemar USA
Electroplated Diamond Mandrels are engineered for high-accuracy internal grinding, polishing, and shaping of the toughest materials used in optics, ceramics, carbide tooling, sapphire, quartz, and advanced technical manufacturing. Each mandrel is manufactured using premium synthetic diamond, precision electroplating, and tight geometric tolerances—ensuring fast cutting action, long tool life, and exceptional dimensional accuracy in small-diameter internal work.
Designed for ID grinding, bore polishing, radius generation, slotting, and high-precision finishing, these mandrels deliver consistent performance on both CNC and manual grinding equipment.
High-Performance Electroplated Construction
Braemar’s electroplated diamond technology provides:
-
Single-layer, sharp diamond exposure for aggressive cutting
-
Excellent form accuracy—ideal for precision internal geometry
-
Cool cutting due to open-structure plating
-
Minimal loading and consistent chip evacuation
-
Superior edge-holding for tight-tolerance grinding
Electroplated mandrels are ideal for applications requiring free-cutting action, minimal heat generation, and high material-removal efficiency.
Mandrel Styles & Diameters
Braemar USA manufactures a full range of mandrel styles:
-
Straight mandrels
-
Taper mandrels
-
Radius and form mandrels
-
Micro-diameter mandrels for small bores
-
Custom geometries for optical and semiconductor work
Available in diameters from 0.5 mm to 12 mm (custom sizes available).
Materials These Mandrels Grind
Electroplated diamond mandrels are optimized for:
-
Sapphire
-
Quartz
-
Ceramics (alumina, zirconia, machinable ceramics)
-
Carbide
-
Hardened steels
-
Optical glass
-
Silicon carbide & advanced materials
Applications
Perfect for high-precision internal work such as:
-
ID grinding and bore sizing
-
Optical lens and prism finishing
-
Radius generation
-
Slot grinding
-
Chamfering & deburring
-
Micro-finishing in semiconductor and medical components
Why Choose Braemar USA Electroplated Diamond Mandrels?
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Industry-leading precision plating
-
Consistent diamond exposure across the entire abrasive surface
-
Long-life mandrels with exceptional form stability
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Custom engineering for CNC, optical, and advanced machining systems
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Fast delivery and U.S.-based technical support
Call (480) 966-9311 or Add to Quote for pricing.
Specifications
ITEM
DM015
DM020
DM025
DM030
DM040
DM050
DM060
DM080
DM100
DM120
DM140
DM160
DM180
DM200
DM235
DM250
DM275
DM335
DM375
DM500
DM625
DM750
DM1000
A
0.015
0.020
0.025
0.030
0.040
0.050
0.060
0.080
0.100
0.120
0.140
0.160
0.180
0.200
0.235
0.250
0.275
0.335
0.375
0.500
0.625
0.750
1.000
B
0.100
0.100
0.100
0.100
0.100
0.100
0.125
0.150
0.150
0.150
0.200
0.200
0.235
0.235
0.275
0.275
0.300
0.300
0.300
0.400
0.400
0.500
0.500
C
0.187
0.187
0.187
0.250
0.250
0.250
0.500
0.500
0.500
0.500
0.625
N/A
N/A
1.000
1.000
1.000
N/A
N/A
N/A
N/A
N/A
N/A
N/A
D
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.125
0.250
0.250
0.250
0.250
0.250
0.250
0.375
0.375
0.375
0.375
L
2.150
2.150
2.150
2.150
2.150
2.150
2.150
2.150
2.150
2.150
2.150
2.150
2.150
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.000
3.500
3.500
R
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
0.125
0.125
0.200
0.200
0.250
0.350
0.400
0.700
R1
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
0.040
0.040
0.040
0.040
0.050
0.050
0.050
0.100
GRIT
200/230
200/230
200/230
200/230
200/230
200/230
200/230
200/230
200/230
200/230
200/230
200/230
100/120
100/120
100/120
100/120
100/120
100/120
100/120
100/120
100/120
100/120
100/120
ITEM:
DM015
A:
0.015
B:
0.100
C :
0.187
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM020
A:
0.020
B:
0.100
C :
0.187
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM025
A:
0.025
B:
0.100
C :
0.187
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM030
A:
0.030
B:
0.100
C :
0.250
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM040
A:
0.040
B:
0.100
C :
0.250
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM050
A:
0.050
B:
0.100
C :
0.250
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM060
A:
0.060
B:
0.125
C :
0.500
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM080
A:
0.080
B:
0.150
C :
0.500
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM100
A:
0.100
B:
0.150
C :
0.500
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM120
A:
0.120
B:
0.150
C :
0.500
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM140
A:
0.140
B:
0.200
C :
0.625
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM160
A:
0.160
B:
0.200
C :
N/A
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
200/230
ITEM:
DM180
A:
0.180
B:
0.235
C :
N/A
D:
0.125
L:
2.150
R:
N/A
R1:
N/A
GRIT:
100/120
ITEM:
DM200
A:
0.200
B:
0.235
C :
1.000
D:
0.250
L:
3.000
R:
N/A
R1:
N/A
GRIT:
100/120
ITEM:
DM235
A:
0.235
B:
0.275
C :
1.000
D:
0.250
L:
3.000
R:
N/A
R1:
N/A
GRIT:
100/120
ITEM:
DM250
A:
0.250
B:
0.275
C :
1.000
D:
0.250
L:
3.000
R:
0.125
R1:
0.040
GRIT:
100/120
ITEM:
DM275
A:
0.275
B:
0.300
C :
N/A
D:
0.250
L:
3.000
R:
0.125
R1:
0.040
GRIT:
100/120
ITEM:
DM335
A:
0.335
B:
0.300
C :
N/A
D:
0.250
L:
3.000
R:
0.200
R1:
0.040
GRIT:
100/120
ITEM:
DM375
A:
0.375
B:
0.300
C :
N/A
D:
0.250
L:
3.000
R:
0.200
R1:
0.040
GRIT:
100/120
ITEM:
DM500
A:
0.500
B:
0.400
C :
N/A
D:
0.375
L:
3.000
R:
0.250
R1:
0.050
GRIT:
100/120
ITEM:
DM625
A:
0.625
B:
0.400
C :
N/A
D:
0.375
L:
3.000
R:
0.350
R1:
0.050
GRIT:
100/120
ITEM:
DM750
A:
0.750
B:
0.500
C :
N/A
D:
0.375
L:
3.500
R:
0.400
R1:
0.050
GRIT:
100/120
ITEM:
DM1000
A:
1.000
B:
0.500
C :
N/A
D:
0.375
L:
3.500
R:
0.700
R1:
0.100
GRIT:
100/120
ITEM:
A:
B:
C :
D:
L:
R:
R1:
GRIT:
