Transformer Insulation Materials
Machined Insulation Parts
Drawing-based parts in epoxy board, FR-4, GPO-3, SMC, laminated wood and DMC
Machined insulation parts produced to drawing in epoxy board, FR-4 (G10), GPO-3, SMC, laminated wood and DMC. Samples and drawings accepted for one-off and batch quantities.
Class F (155°C); laminated wood 105°CSample to drawingCut, drill, mill, turn, CNC
- Materials
- Epoxy / FR-4 / GPO-3 / SMC / laminated wood / DMC
- Processes
- Cutting, drilling, milling, turning, CNC
- Tolerance
- Per drawing
- Surface
- Deburring, chamfering
Request a quotation or a sample. Tell us thickness, width, temperature class, quantity and delivery form. We reply within one business day.
Technical data
| Property | Unit | Value |
|---|---|---|
| Materials | — | Epoxy board / FR-4 (G10) / GPO-3 / SMC / laminated wood / DMC |
| Colors | — | Yellow / green / red / white / wood |
| Temperature class | — | Class F 155°C (laminated wood 105°C) |
| Processes | — | Cutting, drilling, milling, turning, CNC |
| Dimensions / tolerance | — | Per drawing |
| Surface | — | Deburring, chamfering, as required |
| Packaging | — | Per customer requirement |
Values are typical values or ranges from our product data. Bulk supply is subject to the approved specification, sample and test report. If a parameter you need is not listed here, ask our engineers for the full test report for that grade.
| Material | Colour | Temperature resistance | Typical use |
|---|---|---|---|
| Epoxy sheet (3240) | Yellow | Class F (155°C) | Structural insulation, supports |
| FR-4 (G10) | Green | Class F (155°C) | Barriers, mounting boards |
| GPO-3 | Red | Class F (155°C) | Arc and track resistant structures |
| SMC | White | Class F (155°C) | Moulded / machined shaped parts |
| Laminated wood | Natural wood colour | 105°C | Coil supports, clamping parts |
| DMC pad | Red | Class F (155°C) | Pads and spacers |
Key features
- Multiple materials to balance insulation class, mechanical strength and cost.
- Samples and drawings accepted; one-off and batch quantities.
- Deburring and dimensional re-check after machining to reduce assembly rework.
Applications
Transformer/reactor insulation structures, motor insulation supports, pads, barriers and connectors.
Oil-Immersed TransformersDry-Type TransformersElectric Motors & GeneratorsSwitchgear & Electrical Equipment
Why it fits
When the shape is the problem, not the material - send a drawing (PDF/DWG/STEP) and get the part back to tolerance.
Ordering information
To receive a quotation, please confirm:
- Product and grade
- Thickness and width (and roll or sheet size)
- Temperature class
- Quantity and delivery form (roll / sheet / die-cut / machined)
- Destination port and required delivery date
For machined parts, attach a drawing in PDF, DWG or STEP format. Datasheets, COAs and batch test data are available on request.
Related materials
Often specified together
Send your specification
Our export team reviews the application, the process and the existing specification before recommending a construction.