GRAY
GRANITE
Rahn
Gray granite is ideal for both high precision and shop floor applications.
With its high quartz content, this gray granite is highly resistant to
wear, and the tight grain structure reduces pitting, and ensures an extremely
smooth precision surface. Gray granite is Rahn's standard material for
Tool Room Grade B and Inspection Grade A surface plates.
Gray
Granite - Super 100 Surface Plates
Tool
Room Grade B - Repeat Measurement Guarantee: .000100" F.I.R.
| Size |
Part
#
No Lip |
Part
#
2 Lip |
Part
#
4 Lip |
Accuracy
in Inches |
Accuracy
in mm |
| 12
x 12 x 3 |
12123GOB |
12123G2B |
12123G4B |
.000200" |
0.0050mm |
| 12
x 18 x 3 |
12183GOB |
12183G2B |
12183G4B |
.000200" |
0.0050mm |
| 18
x 18 x 3 |
18183GOB |
18183G2B |
18183G4B |
.000200" |
0.0050mm |
| 18
x 24 x 3 |
18243GOB |
18244G2B |
18244G4B |
.000260" |
0.0066mm |
| 24
x 24 x 4 |
24244GOB |
24244G2B |
24244G4B |
.000280" |
0.0070mm |
| 24
x 36 x 6 |
24366GOB |
24366G2B |
24366G4B |
.000340" |
0.0086mm |
| 24
x 48 x 8 |
24488GOB |
24488G2B |
24488G4B |
.000500" |
0.0086mm |
| 36
x 36 x 6 |
36366G0B |
36366G2B |
36366G4B |
.000400" |
0.0100mm |
| 36
x 48 x 8 |
36488G0B |
36488G2B |
36488G4B |
.000500" |
0.0130mm |
| 36
x 60 x 10 |
366010G0B |
366010G2B |
366010G4B |
.000700" |
0.0180mm |
| 36
x 72 x 10 |
367210G0B |
367210G2B |
367210G4B |
.001000" |
0.0250mm |
| 48
x 48 x 8 |
48488G0B |
48488G2B |
48488G4B |
.000800" |
0.0200mm |
| 48
x 60 x 10 |
486010G0B |
486010G2B |
486010G4B |
.000900" |
0.0230mm |
| 48
x 72 x 10 |
487210G0B |
487210G2B |
487210G4B |
.001000" |
0.0250mm |
| 48
x 96 x 14 |
489614G0B |
489614G2B |
489614G4B |
.001500" |
0.0380mm |
Gray
Granite - Super 100 Surface Plates
Inspection
Grade A- Repeat Measurement Guarantee: .00050" F.I.R.
| Size |
Part
#
No Lip |
Part
#
2 Lip |
Part
#
4 Lip |
Accuracy
in Inches |
Accuracy
in mm |
| 12
x 12 x 3 |
12123GOA |
12123G2A |
12123G4A |
.000100" |
0.0025mm |
| 12
x 18 x 4 |
12184GOA |
12184G2A |
12184G4A |
.000100" |
0.0025mm |
| 18
x 18 x 4 |
18184GOA |
18184G2A |
18184G4A |
.000100" |
0.0025mm |
| 18
x 24 x 6 |
18246GOA |
18246G2A |
18246G4A |
.000130"
|
0.0033mm |
| 24
x 24 x 6 |
24246GOA |
24246G2A |
24246G4A |
.000140" |
0.0035mm |
| 24
x 36 x 8 |
24368GOA |
24368G2A |
24368G4A |
.000170" |
0.0043mm |
| 24
x 48 x 8 |
24488GOA |
24488G2A |
24488G4A |
.000300" |
0.0076mm |
| 36
x 36 x 8 |
36368G0A |
36368G2A |
36368G4A |
.000200" |
0.0050mm |
| 36
x 48 x 10 |
364810G0A |
364810G2A |
364810G4A |
.000300" |
0.0076mm |
| 36
x 60 x 12 |
366012G0A |
366012G2A |
366012G4A |
.000400" |
0.0100mm |
| 36
x 72 x 12 |
367212G0A |
367212G2A |
367212G4A |
.000500" |
0.0127mm |
| 48
x 48 x 8 |
48488G0A |
48488G2A
|
48488G4A |
.000400" |
0.0100mm |
| 48
x 60 x 12 |
486012G0A |
486012G2A |
486012G4A |
.000500" |
0.0127mm |
| 48
x 72 x 12 |
487212G0A |
487212G2A |
487212G4A |
.000600" |
0.0150mm |
| 48
x 96 x 16 |
489616G0A |
489616G2A |
489616G4A |
.000800" |
0.0180mm |
BLACK
GRANITE
Rahn
Black Granite is recommended for high accuracy applications. This Black
granite is an extremely dense, extremely uniform material. Its low porosity
allows it to take a smooth finish and its high density and high Modulus
of Elasticity lends it more stability and resistance to deflection under
load. Black Granite is Rahn's standard material for Inspection Grade A
and Laboratory Grade AA surface plates, but is now available in B Grade
due to customer request.
Black
Granite - Super 100 Surface Plates
Tool
Room Grade B - Repeat Measurement Guarantee: .000100" F.I.R.
| Size |
Part
#
No Lip |
Part
#
2 Lip |
Part
#
4 Lip |
Accuracy
in Inches |
Accuracy
in mm |
| 12
x 12 x 3 |
12123BOB |
12123B2B |
12123B4B |
.000100"
|
0.0025mm
|
| 12
x 18 x 3 |
12183BOB |
12183B2B |
12183B4B |
.000100" |
0.0025mm |
| 18
x 18 x 3 |
18183BOB |
18183B2B |
18183B4B |
.000100" |
0.0025mm |
| 18
x 24 x 3 |
18243BOB |
18243B2B |
18243B4B |
.000130" |
0.0033mm |
| 24
x 24 x 3 |
24243BOB |
24243B2B |
24243B4B |
.000140" |
0.0035mm |
| 24
x 36 x 4 |
24364BOB |
24364B2B |
24364B4B |
.000170" |
0.0043mm |
| 24
x 48 x 6 |
24486BOB |
24486B2B |
24486B4B |
.000500" |
0.0086mm |
| 36
x 36 x 6 |
36366B0B |
36366B2B |
36366B4B |
.000200" |
0.0050mm |
| 36
x 48 x 6 |
36486B0B |
36486B2B |
36486B4B |
.000300" |
0.0076mm |
| 36
x 60 x 6 |
36606B0B |
36606B2B |
36606B4B |
.000400" |
0.0100mm |
| 36
x 72 x 8 |
36728B0B |
36728B2B |
36728B4B |
.000500" |
0.0127mm |
| 48
x 48 x 6 |
48486B0B |
48486B2B |
48486B4B |
.000400" |
0.0100mm |
| 48
x 60 x 6 |
48606B0B |
48606B2B |
48606B4B |
.000500" |
0.0127mm |
| 48
x 72 x 8 |
48728B0B |
48728B2B |
48728B4B |
.000600" |
0.0150mm |
| 48x96x10 |
489610B0B |
489610B2B |
489610B4B |
.000800" |
0.0180mm |
Black
Granite - Super 100 Surface Plates
Inspection
Grade A- Repeat Measurement Guarantee: .000050" F.I.R.
| Size |
Part
#
No Lip |
Part
#
2 Lip |
Part
#
4 Lip |
Accuracy
in Inches |
Accuracy
in mm |
| 12
x 12 x 3 |
12123BOA
|
12123B2A
|
12123B4A |
.000100"
|
0.0025mm
|
| 12
x 18 x 3 |
12183BOA |
12183B2A |
12183B4A |
.000100" |
0.0025mm |
| 18
x 18 x 3 |
18183BOA |
18183B2A |
18183B4A |
.000100" |
0.0025mm |
| 18
x 24 x 3 |
18243BOA |
18243B2A |
18243B4A |
.000130" |
0.0033mm |
| 24
x 24 x 3 |
24243BOA |
24243B2A |
24243B4A |
.000140" |
0.0035mm |
| 24
x 36 x 4 |
24364BOA |
24364B2A |
24364B4A |
.000170" |
0.0043mm |
| 24
x 48 x 6 |
24486B0A |
24486B2A |
24486B4A |
.000300" |
.0076mm |
| 36
x 36 x 6 |
36366B0A |
36366B2A |
36366B4A |
.000200" |
0.0050mm |
| 36
x 48 x 6 |
36486B0A |
36486B2A |
36486B4A |
.000300" |
0.0076mm |
| 36
x 60 x 6 |
36606B0A |
36606B2A |
36606B4A |
.000400" |
0.0100mm |
| 36
x 72 x 8 |
36728B0A |
36728B2A |
36728B4A |
.000500" |
0.0127mm |
| 48
x 48 x 6 |
48486B0A |
48486B2A |
48486B4A |
.000400" |
0.0100mm |
| 48
x 60 x 6 |
48606B0A
|
48606B2A |
48606B4A |
.000500" |
0.0127mm |
| 48
x 72 x 8 |
48728B0A |
48728B2A |
48728B4A |
.000600" |
0.0150mm |
| 48
x 96 x 10 |
489610B0A |
489610B2A |
489610B4A |
.000700" |
0.0180mm |
Black
Granite - Super 100 Surface Plates
Inspection
Grade AA- Repeat Measurement Guarantee: .000025" F.I.R.
| Size |
Part
#
No Lip |
Part
#
2 Lip |
Part
#
4 Lip |
Accuracy
in Inches |
Accuracy
in mm |
| 12
x 12 x 3 |
12123BOAA |
12123B2AA |
12123B4AA |
.000050" |
0.00127mm |
| 12
x 18 x 3 |
12183BOAA |
12183B2AA |
12183B4AA |
.000050" |
0.00127mm |
| 18
x 18 x 4 |
18184BOAA |
18184B2AA |
18184B4AA |
.000050" |
0.00127mm |
| 18
x 24 x 4 |
18244BOAA |
18244B2AA |
18244B4AA |
.000065" |
0.00165mm |
| 24
x 24 x 6 |
24246BOAA |
24246B2AA |
24246B4AA |
.000070" |
0.00178mm |
| 24
x 36 x 6 |
24368BOAA |
24368B2AA |
24368B4AA |
.000085" |
0.00220mm |
| 24
x 48 x 8 |
24488BOAA |
24488B2AA
|
24488B4AA |
.000150" |
0.0038mm |
| 36
x 36 x 6 |
36366B0AA |
36366B2AA |
36366B4AA |
.000100" |
0.00250mm |
| 36
x 48 x 8 |
36488B0AA |
36488B2AA |
36488B4AA |
.000150" |
0.00380mm |
| 36
x 60 x 10 |
366010B0AA |
366010B2AA |
366010B4AA |
.000200" |
0.00500mm |
| 36
x 72 x 10 |
367210B0AA |
367210B2AA |
367210B4AA |
.000250" |
0.00635mm |
| 48
x 48 x 8 |
48488B0AA |
48488B2AA |
48488B4AA |
.000200" |
0.0050mm |
| 48
x 60 x 8 |
48608B0A
|
48608B2A |
48608B4A |
.000500" |
0.0127mm |
| 48
x 72 x 10 |
487210B0AA |
487210B2AA |
487210B4AA |
.000300" |
0.00760mm |
| 48
x 96 x 11 |
489611B0AA |
489611B2AA |
489611B4AA |
.000400" |
0.010mm |
"Premium"
RED GRANITE
Rahn
Premium Red Granite is recommended for high accuracy applications. Our
Red granite is a high quartz with excellent wear resistance. It finishes
with an smooth luster and similair to our grey and black granite, has
a high Modules of Elasticity allowing for plate loading to be double the
Federal Specification GGG-P-463c. It is a very stable granite and resistance
to deflection under load. Rahn Premium Red Granite is available
in Tool Room B, Inspection Grade A and Laboratory Grade AA surface plates.
Red
Granite - Super 100 Surface Plates
Tool
Room Grade B - Repeat Measurement Guarantee: .000100" F.I.R.
| Size |
Part
#
No Lip |
Part
#
2 Lip |
Part
#
4 Lip |
Accuracy
in Inches |
Accuracy
in mm |
| 12
x 12 x 3 |
12123ROB |
12123R2B |
12123R4B |
.000100"
|
0.0025mm
|
| 12
x 18 x 3 |
12183ROB |
12183R2B |
12183R4B |
.000100" |
0.0025mm |
| 18
x 18 x 3 |
18183ROB |
18183R2B |
18183R4B |
.000100" |
0.0025mm |
| 18
x 24 x 3 |
18243ROB |
18243R2B |
18243R4B |
.000130" |
0.0033mm |
| 24
x 24 x 4 |
24244ROB |
24244R2B |
24244R4B |
.000140" |
0.0035mm |
| 24
x 36 x 4 |
24364ROB |
24364R2B |
24364R4B |
.000170" |
0.0043mm |
| 24
x 48 x 6 |
24486ROB |
24486R2B |
24486R4B |
.000500" |
0.0086mm |
| 36
x 36 x 6 |
36366R0B |
36366R2B |
36366R4B |
.000200" |
0.0050mm |
| 36
x 48 x 6 |
36486R0B |
36486R2B |
36486R4B |
.000300" |
0.0076mm |
| 36
x 60 x 6 |
36606R0B |
36606R2B |
36606R4B |
.000400" |
0.0100mm |
| 36
x 72 x 8 |
36728R0B |
36728R2B |
36728R4B |
.000500" |
0.0127mm |
| 48
x 48 x 6 |
48486R0B |
48486R2B |
48486R4B |
.000400" |
0.0100mm |
| 48
x 60 x 6 |
48606R0B |
48606R2B |
48606R4B |
.000500" |
0.0127mm |
| 48
x 72 x 8 |
48728R0B |
48728R2B |
48728R4B |
.000600" |
0.0150mm |
| 48x
96x 10 |
489610R0B |
489610R2B |
489610R4B |
.000800" |
0.0180mm |
Red
Granite - Super 100 Surface Plates
Inspection
Grade A- Repeat Measurement Guarantee: .000050" F.I.R.
| Size |
Part
#
No Lip |
Part
#
2 Lip |
Part
#
4 Lip |
Accuracy
in Inches |
Accuracy
in mm |
| 12
x 12 x 3 |
12123ROA
|
12123R2A
|
12123R4A |
.000100"
|
0.0025mm
|
| 12
x 18 x 4 |
12184ROA |
12184R2A |
12184R4A |
.000100" |
0.0025mm |
| 18
x 18 x 4 |
18184ROA |
18184R2A |
18184R4A |
.000100" |
0.0025mm |
| 18
x 24 x 4 |
18244ROA |
18244R2A |
18244R4A |
.000130" |
0.0033mm |
| 24
x 24 x 4 |
24244ROA |
24244R2A |
24244R4A |
.000140" |
0.0035mm |
| 24
x 36 x 6 |
24366ROA |
24366R2A |
24366R4A |
.000170" |
0.0043mm |
| 24
x 48 x 6 |
24486R0A |
24486R2A |
24486R4A |
.000300" |
.0076mm |
| 36
x 36 x 6 |
36366R0A |
36366R2A |
36366R4A |
.000200" |
0.0050mm |
| 36
x 48 x 6 |
36486R0A |
36486R2A |
36486R4A |
.000300" |
0.0076mm |
| 36
x 60 x 8 |
36608R0A |
36608R2A |
36608R4A |
.000400" |
0.0100mm |
| 36
x 72 x 10 |
367210R0A |
367210R2A |
367210R4A |
.000500" |
0.0127mm |
| 48
x 48 x 6 |
48486R0A |
48486R2A |
48486R4A |
.000400" |
0.0100mm |
| 48
x 60 x 8 |
48608R0A
|
48608R2A |
48608R4A |
.000500" |
0.0127mm |
| 48
x 72 x 10 |
487210R0A |
487210R2A |
487210R4A |
.000600" |
0.0150mm |
| 48
x 96 x 12 |
489612R0A |
489612R2A |
489612RB4A |
.000700" |
0.0180mm |
Red
Granite - Super 100 Surface Plates
Inspection
Grade AA- Repeat Measurement Guarantee: .000025" F.I.R.
| Size |
Part
#
No Lip |
Part
#
2 Lip |
Part
#
4 Lip |
Accuracy
in Inches |
Accuracy
in mm |
| 12
x 12 x 3 |
12123ROAA |
12123R2AA |
12123R4AA |
.000050" |
0.00127mm |
| 12
x 18 x 4 |
12184ROAA |
12184R2AA |
12184R4AA |
.000050" |
0.00127mm |
| 18
x 18 x 4 |
18184ROAA |
18184R2AA |
18184R4AA |
.000050" |
0.00127mm |
| 18
x 24 x 4 |
18244ROAA |
18244R2AA |
18244R4AA |
.000065" |
0.00165mm |
| 24
x 24 x 6 |
24246ROAA |
24246R2AA |
24246R4AA |
.000070" |
0.00178mm |
| 24
x 36 x 6 |
24366R0AA |
24366R2AA |
24366R4AA |
.000085" |
0.0022mm |
| 24
x 48 x 8 |
24488ROAA |
24488R2AA
|
24488R4AA |
.000150" |
0.0038mm |
| 36
x 36 x 6 |
36366R0AA |
36366R2AA |
36366R4AA |
.000100" |
0.0025mm |
| 36
x 48 x 8 |
36488R0AA |
36488R2AA |
36488R4AA |
.000150" |
0.0038mm |
| 36
x 60 x 10 |
366010R0AA |
366010R2AA |
366010R4AA |
.000200" |
0.0050mm |
| 36
x 72 x 12 |
367212R0AA |
367212R2AA |
367212R4AA |
.000250" |
0.0064mm |
| 48
x 48 x 8 |
48488R0AA |
48488R2AA |
48488R4AA |
.000200" |
0.0050mm |
| 48
x 60 x 10 |
486010R0A
|
486010R2A |
486010R4A |
.000500" |
0.0063mm |
| 48
x 72 x 12 |
487212R0AA |
487212R2AA |
487212R4AA |
.000300" |
0.0076mm |
| 48
x 96 x 14 |
489614R0AA |
489614R2AA |
489614R4AA |
.000400" |
0.010mm |
|
