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Tubed Eyelets
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Ceramic eye posts manufactured by LSP Industrial Ceramics provide a rigid, dimensionally stable interface for applications requiring precise alignment, electrical isolation, and thermal durability. Unlike tubular eyelets designed primarily for feed through passages, eye posts function as solid or semi solid alignment structures with a controlled bore and extended body length. These components are used in semiconductor equipment, analytical instruments, aerospace assemblies, high temperature furnaces, and industrial machinery where metals or polymers cannot maintain stability under heat, voltage, or corrosive exposure. Their geometry supports consistent guidance for wires, probes, pins, or mechanical elements while maintaining insulation between conductive components and surrounding structures.

Material Behavior and Structural Performance in Eye Posts

Ceramic eye posts maintain dimensional accuracy under thermal cycling, electrical load, and mechanical stress. Their insulating properties prevent electrical bridging in assemblies where conductive elements pass through metallic housings. Hardness supports stable alignment, while resistance to oxidation and contamination ensures long term reliability in demanding environments.

Dimensional Variables That Influence Eye Post Selection

Several geometric factors shape how an eye post performs in an assembly:

  • Bore diameter determines clearance and guidance for wires, pins, or probes.
  • Outer diameter influences seating stability and retention within housings.
  • Length affects alignment behavior across multi layer structures or deep mounting points.

These variables help engineers match eye posts to specific electrical, thermal, or mechanical requirements.

Integration With Fixtures, Housings, and Multi Layer Assemblies

Eye posts must be matched to the geometry and material of the surrounding structure. Seating depth, hole tolerance, and thermal expansion behavior influence how the post performs under load. Proper integration ensures stable alignment, predictable dielectric spacing, and consistent performance across repeated heating and cooling cycles. This is especially important in assemblies where the post interfaces with metals, ceramics, or composite insulators.

Alignment Stability and Long Run Performance in High Temperature Systems

Eye post stability depends on the relationship between bore size, outer diameter, and length. Longer posts provide extended guidance for probes or wires, while shorter versions support compact assemblies. Ceramic’s dimensional stability under heat ensures consistent alignment across long production runs, reducing variability in applications that rely on precise feed through or positioning behavior.

FAQ

How Do Bore Dimensions Affect Eye Post Performance?

Bore size determines clearance and guidance behavior, influencing how wires or probes move within the assembly.

Why Does Outer Diameter Matter in Eye Post Selection?

Outer diameter affects seating stability and retention, shaping how securely the post fits within the surrounding structure.

What Role Does Length Play in High Temperature Assemblies?

Length influences how the post interfaces with housings or multi layer components, affecting alignment and dielectric spacing.

Segmenting by dimension will alter the order of part numbers.

A (in) A (mm) B (in) B (mm) C (in) C (mm)
TP000 1 2 3 4 5 6
TP090 0.079 2 0.047 1.2 0.984 25
TP090X27 0.079 2 0.047 1.2 1.063 27
TP090X27-1 0.079 2 0.039 1 1.063 27
TP100 0.158 4 0.087 2.2 0.433 11
TP102 0.197 5 0.122 3.1 0.315 8
TP104 0.221 5.6 0.122 3.1 0.788 20
TP106 0.232 5.9 0.146 3.7 0.473 12
TP108 0.236 6 0.087 2.2 0.477 12.1
TP110 0.236 6 0.118 3 0.552 14
TP112 0.268 6.8 0.158 4 0.63 16
TP115 0.307 7.8 0.162 4.1 0.552 14
TP120 0.307 7.8 0.197 5 0.591 15
TP125 0.307 7.8 0.162 4.1 0.788 20
TP130 0.335 8.5 0.244 6.2 0.65 16.5
TP134 0.374 9.5 0.248 6.3 0.63 16
TP138 0.374 9.5 0.221 5.6 0.394 10
TP140 0.374 9.5 0.221 5.6 0.788 20
TP142 0.374 9.5 0.248 6.3 0.591 15
TP144 0.382 9.7 0.217 5.5 0.394 10
TP144-1 0.386 9.8 0.217 5.5 0.973 24.7
TP145 0.386 9.8 0.217 5.5 1.1 28
TP145-1 0.394 10 0.221 5.6 1.25 31.7
TP146 0.39 9.9 0.217 5.5 0.867 22
TP146-1 0.374 9.5 0.201 5.1 0.812 20.6
TP146-2 0.315 8 0.217 5.5 0.788 20
TP146-3 0.394 10 0.197 5 0.985 25
TP147 0.386 9.8 0.217 5.5 0.626 15.9
TP147-2 0.386 9.8 0.217 5.5 0.788 20
TP149 0.386 9.8 0.236 6 1.1 28
TP150 0.386 9.8 0.236 6 0.946 24
TP152 0.386 9.8 0.236 6 1.08 27.5
TP154 0.386 9.8 0.236 6 0.788 20
TP156 0.386 9.8 0.213 5.4 0.788 20
TP158 0.392 9.95 0.256 6.5 0.985 25
TP160 0.392 9.95 0.256 6.5 0.788 20
TP161-4 0.39 9.9 0.118 3 0.551 14
TP162 0.394 10 0.236 6 1.1 28
TP164 0.394 10 0.217 5.5 0.788 20
TP166 0.398 10.1 0.276 7 0.867 22
TP170 0.414 10.5 0.256 6.5 0.985 25
TP172 0.429 10.9 0.256 6.5 0.591 15
TP174 0.485 12.3 0.331 8.4 0.906 23
TP176 0.5 12.7 0.25 6.35 1.5 38.1
TP178 0.504 12.8 0.331 8.4 0.788 20
TP180 0.532 13.5 0.236 10 0.623 15.8
TP182 0.701 17.8 0.362 9.2 0.788 20
TP184 0.78 19.8 0.473 12 1.02 26
TP186 0.985 25 0.709 18 0.67 17
A (in) A (mm) B (in) B (mm) C (in) C (mm)
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