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Feedthroughs & Viewports > Electrical Feedthroughs > Accessories for Feedthroughs > Insulators for Feedthroughs

Ceramic Beads

Features

  • Also known as fish-spine beads because of flexibility
  • Insulate bare electrical wires in air or vacuum systems
  • Available fitted to wire sizes up to 0.156" diameter
  • Consist of short cylindrical tubes with one concave and one convex end
  • Provide continuous shielding of a central conductor when stacked in a mating order
  • Their versatility is most evident in nonlinear flexible applications such as shielded coaxial vacuum cabling, projects requiring intricate layout patterns, or projects requiring motion displacement

NOTE: Wire-to-ceramic coaxial clearance does affect overall flexibility; therefore, as wire size increases, flexibility decreases.

Dimensional Drawings

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Ordering Table


Beads/
Linear ft.
Dim
A
Dim
B
Dim
C
PartNo Price Add
Item
VacuCADSM
Beads/
Linear ft.
Dim
A
Dim
B
Dim
C
PartNo Price Add
Item
VacuCADSM
110 0.110 0.100 0.053
FTACERB053
P.O.R.
N/A
110 0.125 0.125 0.056
FTACERB056
$44.60
N/A
86 0.170 0.170 0.068
FTACERB068
$44.60
N/A
70 0.200 0.200 0.092
FTACERB092
$44.60
N/A
54 0.260 0.260 0.116
FTACERB116
$44.60
N/A
42 0.330 0.330 0.124
FTACERB124
$44.60
N/A
55 0.260 0.240 0.144
FTACERB144
$60.00
N/A
34 0.400 0.400 0.156
FTACERB156
$44.60
N/A

Note: The electrical and thermal ratings specified are of safe operating limits determined by various factors including material properties, mechanical design, and the intended operating environment. All electrical ratings are based on operation with one side in dry atmosphere and the other side in vacuum of less than 1 x 10-4 Torr. All VacuCAD files as well as any dimensions shown or listed in our ordering tables do not include manufacturing tolerances and are provided for reference only.

Feedthrough Selection Guide
Finding the right feedthrough has never been easier with our step by step Feedthrough Selection Guide. You can narrow down our feedthrough offering by simply choosing from a variety of different options suitable to your requirements. If you can't find the feedthrough you need or want a custom configuration, please email sales@lesker.com with your inquiry.

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