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790 SERIES
ClassOne™ CleanTop^® II
Optical Top

TMC 790 Series ClassOne(TM) CleanTop(TM) II Optical Top

Specifications
	Core:
			Steel honeycomb, closed-cell, 0.010 in. thick foil
	Core shear modulus:
			275,000 psi
	Core cell size:
			<0.5 in.²
	Core Density:
			13.3 lbs/ft³ (230 kg/m³)
	Flatness:
			± 0.005 in. (0.13 mm)
	Top and Bottom Skin:
			430 series ferromagnetic stainless steel
	Compliance, resonant frequency, stiffness:
		click here
	Sidewalls:
			Stainless Steel with damped interior surface
	Tapped holes:
			Backed by 1 in. (25 mm) long nylon (optional stainless steel 316 Alloy) cups

See Also:
Optical Tops
	Series 710
	Series 770
	Series 780
Supports
	4 Post System
	6 Post System
	Free Standing Posts
	Modular Posts

The ClassOne™ CleanTop^® II Optical Top design is an extension of the original CleanTop, adapted for cleanrooms.

It is Class 100 cleanroom compatible with an all-stainless steel construction (stainless steel cups optional).

Features:

Individual cups under each tapped hole are airtight
3/16 in. (5 mm) thick top skin
Stainless steel top, bottom, sides
Cleanroom-compatible design and packaging
Two levels of fixed damping available:
- Maximum Dry Damping
- Standard Dry Damping

For more information about Dry Damping, Click Here .

How to Order:

Choose the size and thickness of the top that you need from either the Maximum Damping Chart or Standard Damping Chart below.
You will need to specify the available Hole Pattern / Threads and /or Laser Ports. Click here to see the Hole Pattern / Laser Port Suffix Chart.
Click on the Get Price Link for the specific size and Damping level you require.
You will be taken to a new page containing pricing information.
NOTE: The 790 Series Optical Tops cannot be purchased online. You will be given pricing as well as purchasing and shipping information.
You can then return to shopping, check out, or contact TMC for more information.

Size Chart - Maximum Dry Damping

Surface Dimensions			8" Thick Tops (200 mm)	12" Thick Tops (300 mm)	18" Thick Tops (450 mm)	24" Thick Tops (600 mm)
in.	ft.	m	8" Thick Tops (200 mm)	12" Thick Tops (300 mm)	18" Thick Tops (450 mm)	24" Thick Tops (600 mm)
30 x 60 maximum dry damping		0.75 x 1.5 maximum dry damping	794-432 Get Price	794-632 Get Price
30 x 72 maximum dry damping		0.75 x 1.8 maximum dry damping	794-491 Get Price	794-691 Get Price
30 x 96 maximum dry damping		0.75 x 2.4 maximum dry damping	794-492 Get Price	794-692 Get Price
30 x 120 maximum dry damping		0.75 x 3.0 maximum dry damping	794-493 Get Price	794-693 Get Price
36 x 60 maximum dry damping	3 x 5 maximum dry damping	0.9 x 1.5 maximum dry damping	794-436 Get Price	794-636 Get Price
36 x 72 maximum dry damping	3 x 6 maximum dry damping	0.9 x 1.8 maximum dry damping	794-439 Get Price	794-639 Get Price
36 x 96 maximum dry damping	3 x 8 maximum dry damping	0.9 x 2.4 maximum dry damping	794-440 Get Price	794-640 Get Price	794-740 Get Price	794-840 Get Price
36 x 120 maximum dry damping	3 x 10 maximum dry damping	0.9 x 3.0 maximum dry damping	794-494 Get Price	794-694 Get Price	794-794 Get Price	794-894 Get Price
40 x 60 maximum dry damping		1.0 x 1.5 maximum dry damping	794-443 Get Price	794-643 Get Price
40 x 80 maximum dry damping		1.0 x 2.0 maximum dry damping	794-444 Get Price	794-644 Get Price	794-744 Get Price	794-844 Get Price
40 x 120 maximum dry damping		1.0 x 3.0 maximum dry damping	794-445 Get Price	794-645 Get Price	794-745 Get Price	794-845 Get Price
48 x 48 maximum dry damping	4 x 4 maximum dry damping	1.2 x 1.2 maximum dry damping	794-447 Get Price	794-647 Get Price
48 x 60 maximum dry damping	4 x 5 maximum dry damping	1.2 x 1.5 maximum dry damping	794-449 Get Price	794-649 Get Price
48 x 72 maximum dry damping	4 x 6 maximum dry damping	1.2 x 1.8 maximum dry damping	794-451 Get Price	794-651 Get Price	794-751 Get Price	794-851 Get Price
48 x 96 maximum dry damping	4 x 8 maximum dry damping	1.2 x 2.4 maximum dry damping	794-455 Get Price	794-655 Get Price	794-755 Get Price	794-855 Get Price
48 x 120 maximum dry damping	4 x 10 maximum dry damping	1.2 x 3.0 maximum dry damping	794-459 Get Price	794-659 Get Price	794-759 Get Price	794-859 Get Price
48 x 144 maximum dry damping	4 x 12 maximum dry damping	1.2 X 3.6 maximum dry damping	794-463 Get Price	794-663 Get Price	794-763 Get Price	794-863 Get Price
48 x 168 maximum dry damping	4 x 14 maximum dry damping	1.2 x 4.2 maximum dry damping	794-465 Get Price	794-665 Get Price	794-765 Get Price	794-865 Get Price
48 x 192 maximum dry damping	4 x 16 maximum dry damping	1.2 x 4.8 maximum dry damping	794-467 Get Price	794-667 Get Price	794-767 Get Price	794-867 Get Price
60 x 60 maximum dry damping	5 x 5 maximum dry damping	1.5 x 1.5 maximum dry damping	794-470 Get Price	794-670 Get Price	794-770 Get Price	794-870 Get Price
60 x 72 maximum dry damping	5 x 6 maximum dry damping	1.5 x 1.8 maximum dry damping	794-471 Get Price	794-671 Get Price	794-771 Get Price	794-871 Get Price
60 x 80 maximum dry damping		1.5 x 2.0 maximum dry damping	794-472 Get Price	794-672 Get Price	794-772 Get Price	794-872 Get Price
60 x 96 maximum dry damping	5 x 8 maximum dry damping	1.5 x 2.4 maximum dry damping	794-473 Get Price	794-673 Get Price	794-773 Get Price	794-873 Get Price
60 x 120 maximum dry damping	5 x 10 maximum dry damping	1.5 x 3.0 maximum dry damping	794-475 Get Price	794-675 Get Price	794-775 Get Price	794-875 Get Price
60 x 144 maximum dry damping	5 x 12 maximum dry damping	1.5 x 3.6 maximum dry damping	794-476 Get Price	794-676 Get Price	794-776 Get Price	794-876 Get Price
60 x 168 maximum dry damping	5 x 14 maximum dry damping	1.5 x 4.2 maximum dry damping	794-477 Get Price	794-677 Get Price	794-777 Get Price	794-877 Get Price
60 x 192 maximum dry damping	5 x 16 maximum dry damping	1.5 x 4.8 maximum dry damping	794-478 Get Price	794-678 Get Price	794-778 Get Price	794-878 Get Price
Weight Factor(WF) (approx.); Area x WF = Total Weight			0.255 lb/in.² (0.016 kg/cm²	0.265 lb/in.² (0.019 kg/cm²)	0.420 lb/in.² (0.030 kg/cm²)	0.475 lb/in.² (0.033 kg/cm²)

Note: you must specify the required hole patterns and laser ports.
Click here for the Suffix Chart Hole-Patterns/Laser Ports

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Size Chart - Standard Damping

Surface Dimensions			8" Thick Tops (200 mm)	12" Thick Tops (300 mm)	18" Thick Tops (450 mm)	24" Thick Tops (600 mm)
in.	ft.	m	8" Thick Tops (200 mm)	12" Thick Tops (300 mm)	18" Thick Tops (450 mm)	24" Thick Tops (600 mm)
30 x 60 standard dry damping		0.75 x 1.5 standard dry damping	793-432 Get Price	793-632 Get Price
30 x 72 standard dry damping		0.75 x 1.8 standard dry damping	793-491 Get Price	793-691 Get Price
30 x 96 standard dry damping		0.75 x 2.4 standard dry damping	793-492 Get Price	793-692 Get Price
30 x 120 standard dry damping		0.75 x 3.0 standard dry damping	793-493 Get Price	793-693 Get Price
36 x 60 standard dry damping	3 x 5 standard dry damping	0.9 x 1.5 standard dry damping	793-436 Get Price	793-636 Get Price
36 x 72 standard dry damping	3 x 6 standard dry damping	0.9 x 1.8 standard dry damping	793-439 Get Price	793-639 Get Price
36 x 96 standard dry damping	3 x 8 standard dry damping	0.9 x 2.4 standard dry damping	793-440 Get Price	793-640 Get Price	793-740 Get Price	793-840 Get Price
36 x 120 standard dry damping	3 x10 maximum dry damping	0.9 x 3.0 standard dry damping	793-494 Get Price	793-694 Get Price	7934-794 Get Price	793-894 Get Price
40 x 60 standard dry damping		1.0 x 1.5 standard dry damping	793-443 Get Price	793-643 Get Price
40 x 80 standard dry damping		1.0 x 2.0 standard dry damping	793-444 Get Price	793-644 Get Price	793-744 Get Price	793-844 Get Price
40 x 120 standard dry damping		1.0 x 3.0 standard dry damping	793-445 Get Price	793-645 Get Price	793-745 Get Price	793-845 Get Price
48 x 48 standard dry damping	4 x 4 standard dry damping	1.2 x 1.2 standard dry damping	793-447 Get Price	793-647 Get Price
48 x 60 standard dry damping	4 x 5 standard dry damping	1.2 x 1.5 standard dry damping	793-449 Get Price	793-649 Get Price
48 x 72 standard dry damping	4 x 6 standard dry damping	1.2 x 1.8 standard dry damping	793-451 Get Price	793-651 Get Price	793-751 Get Price	793-851 Get Price
48 x 96 standard dry damping	4 x 8 standard dry damping	1.2 x 2.4 standard dry damping	793-455 Get Price	793-655 Get Price	793-755 Get Price	793-855 Get Price
48 x 120 standard dry damping	4 x 10 standard dry damping	1.2 x 3.0 standard dry damping	793-459 Get Price	793-659 Get Price	793-759 Get Price	793-859 Get Price
48 x 144 standard dry damping	4 x 12 standard dry damping	1.2 X 3.6 standard dry damping	793-463 Get Price	793-663 Get Price	793-763 Get Price	793-863 Get Price
48 x 168 standard dry damping	4 x 14 standard dry damping	1.2 x 4.2 standard dry damping	793-465 Get Price	793-665 Get Price	793-765 Get Price	793-865 Get Price
48 x 192 standard dry damping	4 x 16 standard dry damping	1.2 x 4.8 standard dry damping	793-467 Get Price	793-667 Get Price	793-767 Get Price	793-867 Get Price
60 x 60 standard dry damping	5 x 5 standard dry damping	1.5 x 1.5 standard dry damping	793-470 Get Price	793-670 Get Price	793-770 Get Price	793-870 Get Price
60 x 72 standard dry damping	5 x 6 standard dry damping	1.5 x 1.8 standard dry damping	793-471 Get Price	793-671 Get Price	793-771 Get Price	793-871 Get Price
60 x 80 standard dry damping		1.5 x 2.0 standard dry damping	793-472 Get Price	793-672 Get Price	793-772 Get Price	793-872 Get Price
60 x 96 standard dry damping	5 x 8 standard dry damping	1.5 x 2.4 standard dry damping	793-473 Get Price	793-673 Get Price	793-773 Get Price	793-873 Get Price
60 x 120 standard dry damping	5 x 10 standard dry damping	1.5 x 3.0 standard dry damping	793-475 Get Price	793-675 Get Price	793-775 Get Price	793-875 Get Price
60 x 144 standard dry damping	5 x 12 standard dry damping	1.5 x 3.6 standard dry damping	793-476 Get Price	793-676 Get Price	793-776 Get Price	793-876 Get Price
60 x 168 standard dry damping	5 x 14 standard dry damping	1.5 x 4.2 standard dry damping	793-477 Get Price	793-677 Get Price	793-777 Get Price	793-877 Get Price
60 x 192 standard dry damping	5 x 16 standard dry damping	1.5 x 4.8 standard dry damping	793-478 Get Price	793-678 Get Price	793-778 Get Price	793-878 Get Price
Weight Factor(WF) (approx.); Area x WF = Total Weight			0.255 lb/in.² (0.016 kg/cm²	0.265 lb/in.² (0.019 kg/cm²)	0.420 lb/in.² (0.030 kg/cm²)	0.475 lb/in.² (0.033 kg/cm²)

Note: you must specify the required hole patterns and laser ports. see chart below
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Suffix Chart Hole-Patterns/Laser Ports

Suffix	Hole Pattern-Threads	Double Density	Laser Port
00R	No holes	no	no
01R	1" centers - 1/4-20	no	yes
02R	1" centers - 1/4-20	no	no
11R	25 mm centers - M6	no	yes
12R	25 mm centers - M6	no	no
01DR	1" staggered centers-1/4 - 20	yes	yes
02DR	1" staggered centers-1/4 - 20	yes	no
11DR	25 mm staggered centers-M6	yes	yes
12DR	25 mm staggered centers-M6	yes	no