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May 17, 2008
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 770 SERIES
CleanTop® II Optical Top
   
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770 Series Optical Tops
Click here for a larger view
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
   
  See Also:
  Optical Tops
  Series 710
  Series 780
  Series 790
  Supports
  4 Post System
  6 Post System
  Free Standing Posts
  Modular Posts
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The TMC 770 Series 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:
      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 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.
  • 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 770 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 - 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
Get Price
  773-632
Get Price
 30 x 72
standard dry damping
     0.75 X 1.8
standard dry damping
  773-491
Get Price
  773-691
Get Price
 30 x 96
standard dry damping
     0.75 X 2.4
standard dry damping
  773-492
Get Price
  773-692
Get Price
30 x 120
standard dry damping
     0.75 X 3.0
standard dry damping
  773-493
Get Price
  773-693
Get Price
 36 x 60
standard dry damping
  3 x 5
standard dry damping
  0.9 X 1.5
standard dry damping
  773-436
Get Price
  773-636
Get Price
36 x 72
standard dry damping
  3 x 6
standard dry damping
  0.9 X 1.8
standard dry damping
  773-439
Get Price
  773-639
Get Price
 36 x 96
standard dry damping
  3 x 8
standard dry damping
  0.9 X 2.4
standard dry damping
  773-440
Get Price
  773-640
Get Price
36 x 120
standard dry damping
  3 x 10
standard dry damping
  0.9 X 5.0
standard dry damping
  773-494
Get Price
  773-694
Get Price
 40 x 60
standard dry damping
     1.0  X 1.5
standard dry damping
  773-443
Get Price
  773-643
Get Price
 40 x 80
standard dry damping
     1.0 X 2.0
standard dry damping
  773-444
Get Price
  773-644
Get Price
40 x 120
standard dry damping
     1.0 X 3.0
standard dry damping
  773-445
Get Price
  773-645
Get Price
 48 x 48
standard dry damping
  4 x 4
standard dry damping
  1.2 X 1.2
standard dry damping
  773-447
Get Price
  773-647
Get Price
48 x 60
standard dry damping
  4 x 5
standard dry damping
  1.2 X 1.5
standard dry damping
  773-449
Get Price
  773-649
Get Price
 48 x 72
standard dry damping
  4 x 6
standard dry damping
  1.2 X 1.8
standard dry damping
  773-451
Get Price
  773-651
Get Price
 48 x 96
standard dry damping
  4 x 8
standard dry damping
  1.2 X 2.4
standard dry damping
  773-455
Get Price
  773-655
Get Price
 48 x 120
standard dry damping
  4 x 10
standard dry damping
  1.2 X 3.0
standard dry damping
  773-459
Get Price
  773-659
Get Price
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

Back to top

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
Get Price
  771-632
Get Price
 30 x 72
nominal dry damping
     0.75 X 1.8
nominal dry damping
  771-491
Get Price
  771-691
Get Price
 30 x 96
nominal dry damping
     0.75 X 2.4
nominal dry damping
  771-492
Get Price
  771-692
Get Price
30 x 120
nominal dry damping
     0.75 X 3.0
nominal dry damping
  771-493
Get Price
  771-693
Get Price
 36 x 60
nominal dry damping
  3 x 5
nominal dry damping
  0.9 X 1.5
nominal dry damping
  771-436
Get Price
  771-636
Get Price
36 x 72
nominal dry damping
3 x 6
nominal dry damping
  0.9 X 1.8
nominal dry damping
  771-439
Get Price
  771-639
Get Price
 36 x 96
nominal dry damping
3 x 8
nominal dry damping
  0.9 X 2.4
nominal dry damping
  771-440
Get Price
  771-640
Get Price
36 x 120
nominal dry damping
3 x 10
nominal dry damping
  0.9 X 5.0
nominal dry damping
  771-494
Get Price
  771-694
Get Price
 40 x 60
nominal dry damping
     1.0  X 1.5
nominal dry damping
  771-443
Get Price
  771-643
Get Price
 40 x 80
nominal dry damping
     1.0 X 2.0
nominal dry damping
  771-444
Get Price
  771-644
Get Price
40 x 120
nominal dry damping
     1.0 X 3.0
nominal dry damping
  771-445
Get Price
  771-645
Get Price
 48 x 48
nominal dry damping
  4 x 4
nominal dry damping
  1.2 X 1.2
nominal dry damping
  771-447
Get Price
  771-647
Get Price
48 x 60
nominal dry damping
  4 x 5
nominal dry damping
  1.2 X 1.5
nominal dry damping
  771-449
Get Price
  771-649
Get Price
 48 x 72
nominal dry damping
  4 x 6
nominal dry damping
  1.2 X 1.8
nominal dry damping
  771-451
Get Price
  771-651
Get Price
 48 x 96
nominal dry damping
  4 x 8
nominal dry damping
  1.2 X 2.4
nominal dry damping
  771-455
Get Price
  771-655
Get Price
 48 x 120
nominal dry damping
  4 x 10
nominal dry damping
  1.2 X 3.0
nominal dry damping
  771-459
Get Price
  771-659
Get Price
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.

Back to top

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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