Steatite Transmitting Antenna Strain Insulators
Steatite Transmitting Antenna Strain Insulators
| Item # | Figure No. | * Standard Length “L” | Hole Dia. | Size of Bar | ** Shackle |
|---|---|---|---|---|---|
| INS1726 | 1 | 4, 6, 8, 11-9/16 | 11/32 in | 3/4 x 1-1/8 in | 2 pc. 2 in. |
| INS1727 | 1 | 5-1/4, 6, 8, 10, 12, 15 | 11/32 in | 1 x 1-1/2 in | 2 pc. 2 in. or 3 in. |
| INS1728 | 3 | 2-5/8, 4, 6 | 11/32 in | 7/8 x 1-1/4 in | - |
| INS1729 | 3 | 5-1/4, 6, 8, 10, 12, 15 | 11/32 in | 1 x 1-1/2 in | - |
| INS1730 | 4 | 5-1/4, 6, 8 | 11/32 in | 1 x 1-1/2 in | - |
| INS120920 | 2 | 5-1/4, 6, 8, 10, 12, 15 | 11/32 in | 1 x 1-1/2 in | 1 pc. 2 in. or 3 in. |
| INS12786 | 5 | 8, 10, 12, 15 | 3/8 in | 1 x 1-1/2 in | - |
| Item # | Figure No. | * Standard Length “L” | Hole Dia. | Size of Bar | ** Shackle |
WHEN ORDERING: Specify length “L”. Distance from Hole center to end is 9/10 in.
** Specify shackle desired.
Performance Characteristics for Steatite Transmitting Antenna Strain Insulators
Steatite transmitting antenna strain insulators provide stable electrical separation and mechanical support in assemblies where conductors must remain isolated under tension. Their ceramic structure maintains predictable insulation behavior in outdoor and indoor antenna systems, helping reduce the chance of surface tracking or unwanted current paths. The rectangular and round configurations support light and moderate duty applications, with geometry that helps distribute load while maintaining electrical spacing. Glazed surfaces support insulation performance by limiting moisture absorption and reducing contamination buildup.
Material Structure and Configuration Considerations
Steatite offers electrical resistance, hardness, and low thermal conductivity, supporting long-term insulation in assemblies exposed to environmental variation or electrical load. The fired ceramic body must achieve a dense structure that limits porosity and maintains stable dielectric properties. Hole shapes and bar sizes must align with cable or hardware requirements to ensure proper fit and tension distribution. Optional metal shackles can be specified when additional attachment strength or mounting flexibility is needed. Smooth surfaces and controlled shapes help maintain performance in settings with humidity, airborne particles, or mechanical vibration.
Fit for Antenna and Electrical Support Applications
- Antenna strain relief — Supports conductors under tension while maintaining electrical separation.
- Cable attachment setups — Multiple hole shapes allow direct cable connection for various antenna layouts.
- Light and moderate duty assemblies — Ceramic stability supports placement in systems that require controlled spacing without heavy structural load.
- Outdoor and environmental exposure — Glazed surfaces help maintain performance in settings with moisture or airborne contaminants.
FAQ
How Do Steatite Strain Insulators Support Antenna Systems?
Steatite provides electrical resistance and mechanical stability, helping maintain conductor spacing while supporting tension in transmitting antenna assemblies.
Are These Insulators Suitable for Outdoor Use?
Yes. Glazed surfaces help limit moisture absorption and contamination buildup, supporting stable performance in outdoor environments.
What Determines the Correct Hole Shape or Bar Size?
Hole geometry and bar dimensions must match the cable or hardware used in the antenna assembly to ensure proper fit and load distribution.
Can Metal Shackles Be Added to These Insulators?
Yes. Metal shackles can be specified on one or both ends when additional attachment strength or mounting flexibility is required.