How to Select an Optical Top, Optical Table
20 Reasons for choosing TMC Optical Top, Optical Table
CleanTop® II Optical Tops & Optical Tables
Dry Damping
Options & Accessories
See Also:  Optical Tops,   Optical Tables
	Series 710 Optical Top,  Optical Table
	Series 730 Optical Top,  Optical Table
	Series 770 Optical Top,  Optical Table
	Series 780 Optical Top,  Optical Table
	Series 790 Optical Top,  Optical Table
	STACIS iX  LaserTable-Base
See Also: Supports
	4 Post System
	6 Post System
	Free Standing Posts
	Modular Posts
See Also: Optical   Breadboards
	78 Series Breadboard
	77 Series Breadboard
	75 Series Breadboard
Contact an Application Engineer

 
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Our 780 Series spill-proof CleanTop^® II Vibration Isolation Optical Tops are the industry standard. They are available in a full range of sizes and three damping levels. With several support options, your optical table system can be customized for you specific application.

CleanTop^® II meets or exceeds all current industry standards for structural stiffness and damping. The CleanTop^® II is recommended for the majority of optical table applications.

Features:

• Patented CleanTop^® II individual nylon cups under
  each tapped hole are airtight.
• 3/16 in.  (5 mm) top skin
• Three damping levels available:
  • Maximum Dry Damping
  • Standard Dry Damping
  • Nominal Dry Damping
    

More information about Dry Damping.

 How to Order:

• Choose the size and thickness of the top that you need from either the Standard Damping Chart or Nominal 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.
• Contact TMC for purchasing and shipping information

 

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
30 x 60 maximum dry damping		0.75 x 1.5 maximum dry damping	784-432	784-632
30 x 72 maximum dry damping		0.75 x 1.8 maximum dry damping	784-491	784-691
30 x 96 maximum dry damping		0.75 x 2.4 maximum dry damping	784-492	784-692
30 x 120 maximum dry damping		0.75 x 3.0 maximum dry damping	784-493	784-693
36 x 60 maximum dry damping	3 x 5 maximum dry damping	0.9 x 1.5 maximum dry damping	784-436	784-636
36 x 72 maximum dry damping	3 x 6 maximum dry damping	0.9 x 1.8 maximum dry damping	784-439	784-639
36 x 96 maximum dry damping	3 x 8 maximum dry damping	0.9 x 2.4 maximum dry damping	784-440	784-640	784-740	784-840
36 x 120 maximum dry damping	3 x 10 maximum dry damping	0.9 x 3.0 maximum dry damping	784-494	784-694	784-794	784-894
40 x 60 maximum dry damping		1.0 x 1.5 maximum dry damping	784-443	784-643
40 x 80 maximum dry damping		1.0 x 2.0 maximum dry damping	784-444	784-644	784-744	784-844
40 x 120 maximum dry damping		1.0 x 3.0 maximum dry damping	784-445	784-645	784-745	784-845
48 x 48 maximum dry damping	4 x 4 maximum dry damping	1.2 x 1.2 maximum dry damping	784-447	784-647
48 x 60 maximum dry damping	4 x 5 maximum dry damping	1.2 x 1.5 maximum dry damping	784-449	784-649
48 x 72 maximum dry damping	4 x 6 maximum dry damping	1.2 x 1.8 maximum dry damping	784-451	784-651	784-751	784-851
48 x 96 maximum dry damping	4 x 8 maximum dry damping	1.2 x 2.4 maximum dry damping	784-455	784-655	784-755	784-855
48 x 120 maximum dry damping	4 x 10 maximum dry damping	1.2 x 3.0 maximum dry damping	784-459	784-659	784-759	784-859
48 x 144 maximum dry damping	4 x 12 maximum dry damping	1.2 X 3.6 maximum dry damping	784-463	784-663	784-763	784-863
48 x 168 maximum dry damping	4 x 14 maximum dry damping	1.2 x 4.2 maximum dry damping	784-465	784-665	784-765	784-865
48 x 192 maximum dry damping	4 x 16 maximum dry damping	1.2 x 4.8 maximum dry damping	784-467	784-667	784-767	784-867
60 x 60 maximum dry damping	5 x 5 maximum dry damping	1.5 x 1.5 maximum dry damping	784-470	784-670	784-770	784-870
60 x 72 maximum dry damping	5 x 6 maximum dry damping	1.5 x 1.8 maximum dry damping	784-471	784-671	784-771	784-871
60 x 80 maximum dry damping		1.5 x 2.0 maximum dry damping	784-472	784-672	784-772	784-872
60 x 96 maximum dry damping	5 x 8 maximum dry damping	1.5 x 2.4 maximum dry damping	784-473	784-673	784-773	784-873
60 x 120 maximum dry damping	5 x 10 maximum dry damping	1.5 x 3.0 maximum dry damping	784-475	784-675	784-775	784-875
60 x 144 maximum dry damping	5 x 12 maximum dry damping	1.5 x 3.6 maximum dry damping	784-476	784-676	784-776	784-876
60 x 168 maximum dry damping	5 x 14 maximum dry damping	1.5 x 4.2 maximum dry damping	784-477	784-677	784-777	784-877
60 x 192 maximum dry damping	5 x 16 maximum dry damping	1.5 x 4.8 maximum dry damping	784-478	784-678	784-778	784-878
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
30 x 60 standard dry damping		0.75 x 1.5 standard dry damping	783-432	783-632
30 x 72 standard dry damping		0.75 x 1.8 standard dry damping	783-491	783-691
30 x 96 standard dry damping		0.75 x 2.4 standard dry damping	783-492	783-692
30 x 120 standard dry damping		0.75 x 3.0 standard dry damping	783-493	783-693
36 x 60 standard dry damping	3 x 5 standard dry damping	0.9 x 1.5 standard dry damping	783-436	783-636
36 x 72 standard dry damping	3 x 6 standard dry damping	0.9 x 1.8 standard dry damping	783-439	783-639
36 x 96 standard dry damping	3 x 8 standard dry damping	0.9 x 2.4 standard dry damping	783-440	783-640	783-740	783-840
36 x 120 standard dry damping	3 x 10 maximum dry dampin	0.9 x 3.0 standard dry damping	783-494	783-694	783-794	783-894
40 x 60 standard dry damping		1.0 x 1.5 standard dry damping	783-443	783-643
40 x 80 standard dry damping		1.0 x 2.0 standard dry damping	783-444	783-644	783-744	783-844
40 x 120 standard dry damping		1.0 x 3.0 standard dry damping	783-445	783-645	783-745	783-845
48 x 48 standard dry damping	4 x 4 standard dry damping	1.2 x 1.2 standard dry damping	783-447	783-647
48 x 60 standard dry damping	4 x 5 standard dry damping	1.2 x 1.5 standard dry damping	783-449	783-649
48 x 72 standard dry damping	4 x 6 standard dry damping	1.2 x 1.8 standard dry damping	783-451	783-651	783-751	783-851
48 x 96 standard dry damping	4 x 8 standard dry damping	1.2 x 2.4 standard dry damping	783-455	783-655	783-755	783-855
48 x 120 standard dry damping	4 x 10 standard dry damping	1.2 x 3.0 standard dry damping	783-459	783-659	783-759	783-859
48 x 144 standard dry damping	4 x 12 standard dry damping	1.2 X 3.6 standard dry damping	783-463	783-663	783-763	783-863
48 x 168 standard dry damping	4 x 14 standard dry damping	1.2 x 4.2 standard dry damping	783-465	783-665	783-765	783-865
48 x 192 standard dry damping	4 x 16 standard dry damping	1.2 x 4.8 standard dry damping	783-467	783-667	783-767	783-867
60 x 60 standard dry damping	5 x 5 standard dry damping	1.5 x 1.5 standard dry damping	783-470	783-670	783-770	783-870
60 x 72 standard dry damping	5 x 6 standard dry damping	1.5 x 1.8 standard dry damping	783-471	783-671	783-771	783-871
60 x 80 standard dry damping		1.5 x 2.0 standard dry damping	783-472	783-672	783-772	783-872
60 x 96 standard dry damping	5 x 8 standard dry damping	1.5 x 2.4 standard dry damping	783-473	783-673	783-773	783-873
60 x 120 standard dry damping	5 x 10 standard dry damping	1.5 x 3.0 standard dry damping	783-475	783-675	783-775	783-875
60 x 144 standard dry damping	5 x 12 standard dry damping	1.5 x 3.6 standard dry damping	783-476	783-676	783-776	783-876
60 x 168 standard dry damping	5 x 14 standard dry damping	1.5 x 4.2 standard dry damping	783-477	783-677	783-777	783-877
60 x 192 standard dry damping	5 x 16 standard dry damping	1.5 x 4.8 standard dry damping	783-478	783-678	783-778	783-878
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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Nominal 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
30 x 60 nominal dry damping		0.75 x 1.5 nominal dry damping	781-432	781-632
30 x 72 nominal dry damping		0.75 x 1.8 nominal dry damping	781-491	781-691
30 x 96 nominal dry damping		0.75 x 2.4 nominal dry damping	781-492	781-692
30 x 120 nominal dry damping		0.75 x 3.0 nominal dry damping	781-493	781-693
36 x 60 nominal dry damping	3 x 5 nominal dry damping	0.9 x 1.5 nominal dry damping	781-136	781-636
36 x 72 nominal dry damping	3 x 6 nominal dry damping	0.9 x 1.8 nominal dry damping	781-439	781-639
36 x 96 nominal dry damping	3 x 8 nominal dry damping	0.9 x 2.4 nominal dry damping	781-440	781-640	781-740	781-840
36 x 120 nominal dry damping	3 x 10 nominal dry damping	0.9 x 3.0 nominal dry damping	781-494	781-694	781-794	781-894
40 x 60 nominal dry damping		1.0 x 1.5 nominal dry damping	781-443	781-643
40 x 80 nominal dry damping		1.0 x 2.0 nominal dry damping	781-444	781-644	781-744	781-844
40 x 120 nominal dry damping		1.0 x 3.0 nominal dry damping	781-445	781-645	781-745	781-845
48 x 48 nominal dry damping	4 x 4 nominal dry damping	1.2 x 1.2 nominal dry damping	781-447	781-647
48 x 60 nominal dry damping	4 x 5 nominal dry damping	1.2 x 1.5 nominal dry damping	781-449	781-649
48 x 72 nominal dry damping	4 x 6 nominal dry damping	1.2 x 1.8 nominal dry damping	781-451	781-651	781-751	781-851
48 x 96 nominal dry damping	4 x 8 nominal dry damping	1.2 x 2.4 nominal dry damping	781-455	781-655	781-755	781-855
48 x 120 nominal dry damping	4 x 10 nominal dry damping	1.2 x 3.0 nominal dry damping	781-459	781-659	781-759	781-859
48 x 144 nominal dry damping	4 x 12 nominal dry damping	1.2 X 3.6 nominal dry damping	781-463	781-663	781-763	781-863
48 x 168 nominal dry damping	4 x 14 nominal dry damping	1.2 x 4.2 nominal dry damping	781-465	781-665	781-765	781-865
48 x 192 nominal dry damping	4 x 16 nominal dry damping	1.2 x 4.8 nominal dry damping	781-467	781-667	781-767	781-867
60 x 60 nominal dry damping	5 x 5 nominal dry damping	1.5 x 1.5 nominal dry damping	781-470	781-670	781-770	781-870
60 x 72 nominal dry damping	5 x 6 nominal dry damping	1.5 x 1.8 nominal dry damping	781-471	781-671	781-771	781-871
60 x 80 nominal dry damping		1.5 x 2.0 nominal dry damping	781-472	781-672	781-772	781-872
60 x 96 nominal dry damping	5 x 8 nominal dry damping	1.5 x 2.4 nominal dry damping	781-473	781-673	781-773	781-873
60 x 120 nominal dry damping	5 x 10 nominal dry damping	1.5 x 3.0 nominal dry damping	781-475	781-675	781-775	781-875
60 x 144 nominal dry damping	5 x 12 nominal dry damping	1.5 x 3.6 nominal dry damping	781-476	781-676	781-776	781-876
60 x 168 nominal dry damping	5 x 14 nominal dry damping	1.5 x 4.2 nominal dry damping	781-477	781-677	781-777	781-877
60 x 192 nominal dry damping	5 x 16 nominal dry damping	1.5 x 4.8 nominal dry damping	781-478	781-678	781-778	781-878
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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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

 

 

 

 

 

 

 

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U.S. Patent No. 4,645,171
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 Skin:
			430 series ferromagnetic stainless steel, 3/16 in. thick (5 mm)
	Compliance, resonant frequency, stiffness:
		Click here
	Sidewalls:
			Damped, formed steel channel. vinyl covered
	Tapped holes:
			Backed by 1 in. (25 mm) long CleanTop® II nylon cups

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