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CleanTop® II Optical Tops & Optical Tables
Dry Damping
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March 13, 2010 Optics Life Science Semiconductor Search our Site  Home

 
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The TMC 770 Series CleanTop^® II Optical Top is an economical alternative to our industry standard 780 Series CleanTop^® II Optical Tops. We offer our 770 Series CleanTop^® II with 1/8" (3 mm) top and bottom skins. The reduced skin thickness degrades the overall structural rigidity. In addition, a 1/8" skin allows only 2 1/2 threads for a 1/4-20 screw, less the counter-sink.

However, the 770 Series is the ideal configuration for less demanding applications for which low cost is the primary consideration.

Features:

• Patented CleanTop^® II individual nylon cups under
  each tapped hole are airtight.
• 1/8 in. (3mm) top  and bottom skins
• Two dry damping levels available:
  • 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.

 

Size Chart - Standard Damping

Surface Dimensions			8" Thick Tops (200 mm)	12" Thick Tops (300 mm)
in.	ft.	m
30 x 60 standard dry damping		0.75 X 1.5 standard dry damping	773-432	773-632
30 x 72 standard dry damping		0.75 X 1.8 standard dry damping	773-491	773-691
30 x 96 standard dry damping		0.75 X 2.4 standard dry damping	773-492	773-692
30 x 120 standard dry damping		0.75 X 3.0 standard dry damping	773-493	773-693
36 x 60 standard dry damping	3 x 5 standard dry damping	0.9 X 1.5 standard dry damping	773-436	773-636
36 x 72 standard dry damping	3 x 6 standard dry damping	0.9 X 1.8 standard dry damping	773-439	773-639
36 x 96 standard dry damping	3 x 8 standard dry damping	0.9 X 2.4 standard dry damping	773-440	773-640
36 x 120 standard dry damping	3 x 10 standard dry damping	0.9 X 5.0 standard dry damping	773-494	773-694
40 x 60 standard dry damping		1.0  X 1.5 standard dry damping	773-443	773-643
40 x 80 standard dry damping		1.0 X 2.0 standard dry damping	773-444	773-644
40 x 120 standard dry damping		1.0 X 3.0 standard dry damping	773-445	773-645
48 x 48 standard dry damping	4 x 4 standard dry damping	1.2 X 1.2 standard dry damping	773-447	773-647
48 x 60 standard dry damping	4 x 5 standard dry damping	1.2 X 1.5 standard dry damping	773-449	773-649
48 x 72 standard dry damping	4 x 6 standard dry damping	1.2 X 1.8 standard dry damping	773-451	773-651
48 x 96 standard dry damping	4 x 8 standard dry damping	1.2 X 2.4 standard dry damping	773-455	773-655
48 x 120 standard dry damping	4 x 10 standard dry damping	1.2 X 3.0 standard dry damping	773-459	773-659
Weight Factor (WF) (approx.); Area x WF = Total Weight			0.190 lb/in.2 (0.013 kg/cm2	0.230 lb/in.2 (0.016 kg/cm2

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

Size Chart - Nominal Damping

Surface Dimensions			8" Thick Tops (200 mm)	12" Thick Tops (300 mm)
in.	ft.	m
30 x 60 nominal dry damping		0.75 X 1.5 nominal dry damping	771-432	771-632
30 x 72 nominal dry damping		0.75 X 1.8 nominal dry damping	771-491	771-691
30 x 96 nominal dry damping		0.75 X 2.4 nominal dry damping	771-492	771-692
30 x 120 nominal dry damping		0.75 X 3.0 nominal dry damping	771-493	771-693
36 x 60 nominal dry damping	3 x 5 nominal dry damping	0.9 X 1.5 nominal dry damping	771-436	771-636
36 x 72 nominal dry damping	3 x 6 nominal dry damping	0.9 X 1.8 nominal dry damping	771-439	771-639
36 x 96 nominal dry damping	3 x 8 nominal dry damping	0.9 X 2.4 nominal dry damping	771-440	771-640
36 x 120 nominal dry damping	3 x 10 nominal dry damping	0.9 X 5.0 nominal dry damping	771-494	771-694
40 x 60 nominal dry damping		1.0  X 1.5 nominal dry damping	771-443	771-643
40 x 80 nominal dry damping		1.0 X 2.0 nominal dry damping	771-444	771-644
40 x 120 nominal dry damping		1.0 X 3.0 nominal dry damping	771-445	771-645
48 x 48 nominal dry damping	4 x 4 nominal dry damping	1.2 X 1.2 nominal dry damping	771-447	771-647
48 x 60 nominal dry damping	4 x 5 nominal dry damping	1.2 X 1.5 nominal dry damping	771-449	771-649
48 x 72 nominal dry damping	4 x 6 nominal dry damping	1.2 X 1.8 nominal dry damping	771-451	771-651
48 x 96 nominal dry damping	4 x 8 nominal dry damping	1.2 X 2.4 nominal dry damping	771-455	771-655
48 x 120 nominal dry damping	4 x 10 nominal dry damping	1.2 X 3.0 nominal dry damping	771-459	771-659
Weight Factor (WF) (approx.); Area x WF = Total Weight			0.190 lb/in.2 (0.013 kg/cm2	0.230 lb/in.2 (0.016 kg/cm2

Note: you must specify the required hole patterns and laser ports.

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

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, 1/8 in. thick (3 mm)
	Sidewalls:
		Damped, formed steel channel, vinyl covered
	Tapped holes:
			Backed by 1 in. (25 mm) long CleanTop® II nylon cups

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