Tower Attachment Fittings — Types LT & EB
LT and EB tower attachment fittings connect the structure-side attachment to the next fitting in an overhead line insulator assembly. Their body combines an upper transverse bolted connection with a lower eye, providing a defined link between the tower connection and the string hardware. LT and EB models differ in dimensions, bolt designation, mechanical rating and mass, as shown in Datasheet. Selection considers the tower attachment detail, lower mating component and the space around the joint. The fittings use hot-dip galvanised steel parts and stainless steel cotter pins.
Product Overview
The upper connection engages the structure-side assembly, while the lower eye connects the adjoining line fitting. LT and EB tower connections therefore require both the tower detail and the string-side interface to be reviewed. Height h, upper connection dimension L and bolt designation M describe part of this geometry; the tower member and lower eye details complete it.
An EB suffix can identify a different connection arrangement even at the same listed failure load. Datasheet lists M42 for EB-70 and M64 for EB-70A and EB-70B. These differences affect mating hardware and installation space, so the full model designation matters at the tower attachment.
Key Features
- Structure-to-string interface: The fitting links an upper tower-side connection to a lower eye connection.
- Tower clearance dimensions: The h and L dimensions help position the body within the attachment detail.
- Distinct EB suffixes: EB variants use different bolt designations to match their connection geometry.
- Stainless steel retention: Stainless steel cotter pins are specified with the galvanised steel parts.
Product Applications
- Tower-side insulator string attachments: installed at the structure connection, linking the specified tower attachment arrangement to the lower string fitting.
- Cross-arm connection assemblies: used at the designated LT or EB mounting position between the cross-arm attachment hardware and the eye-connected line component.
Technical Specifications
Tower-connecting Hinges (Type LT&EB)
| Catalog No. | Dimensions(mm) | Rated Failure Load(kN) | Weight(kg) | |||||
|---|---|---|---|---|---|---|---|---|
| b | ① | h | M | L | ||||
| LT-16 | 18 | 26 | 100 | 24 | 80 | 20 | 160 | 3.5 |
| LT-30 | 32 | 39 | 100 | 36 | 80 | 25 | 300 | 6.8 |
| EB-50D | 34 | 39 | 125 | 36 | 116 | 25 | 500 | 13 |
| EB-70 | 38 | 45 | 125 | 42 | 136 | 26 | 700 | 14.4 |
| EB-70A | 38 | 45 | 150 | 64 | 195 | 30 | 700 | 29.9 |
| EB-70B | 42 | 51 | 150 | 64 | 195 | 30 | 700 | 29.7 |
| BB-70C | 38 | 45 | 125 | 42 | 116 | 28 | 700 | 13.3 |
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From Production to Delivery
From raw material preparation to final shipmen, every stage is caretuly controled to ensure consistent conductor quality, reliable pertormance,and sae delivery. Our roduction, inspection, packaging, and logistics processes are managed in accordance with applicable standards and project requirements.
Production
The general workflow forms the tower attachment body, prepares the upper connection and lower eye, then completes surface treatment and hardware assembly for the selected LT or EB variant.
Inspection
Dimensional review checks the tower-side interface, lower eye, body height and bolt arrangement. Mechanical records should represent the specified attachment configuration and loading direction.
Packaging
Packing protects the eye surfaces and projecting bolt hardware. Separate labels identify LT models and each EB suffix for installation planning.
Shipping
Shipment paperwork associates each model and quantity with the intended tower attachment schedule, supporting allocation by assembly position on site.
Frequently Asked Questions
What is needed to select tower attachment fittings for insulator strings?
The tower or cross-arm detail should show the connection members, holes, available width and surrounding clearances. The lower mating fitting and loading direction are equally relevant. Together these details define whether the selected LT or EB geometry fits the assembly.
Can EB-70A and EB-70B be treated as the same part?
Datasheet shows several shared dimensions but different masses: 29.9 kg for EB-70A and 29.7 kg for EB-70B. The full body drawing and lower interface are needed to distinguish them.
Does a listed failure load establish the capacity of the tower attachment?
The fitting value does not establish the capacity of the tower member, its holes, bolts or the adjoining component. The complete connection needs to satisfy the project load case and design criteria, including the way the load enters the structure.
What information is needed to enquire about Tower Attachment Fittings — Types LT & EB?
Include the complete LT or EB model, tower attachment drawing, lower mating fitting, project load case, quantity and destination. State the bolt and retention requirements and identify any inspection documents required with the order.
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