PEASPER International Ltd. manufactures custom CNC phenolic resin parts with precision and reliability. As a result, our products deliver excellent insulation, thermal stability, and long service life. Moreover, they meet strict performance requirements for aerospace, automotive, railway, and industrial applications.
Phenolic resin parts perform well under high temperature and high voltage. Therefore, they are trusted in electrical systems, insulation panels, and energy applications.
Our CNC machines provide ±0.1 mm tolerance for all custom shapes. In addition, we offer edge chamfering and diameter customization to match engineering drawings.
The material is UL94 V-0 certified. Consequently, it ensures safety in demanding aerospace and railway environments where fire resistance is critical.
Prototyping is completed within 5–7 days. Furthermore, mass production orders are processed quickly to keep your project on schedule.
We support small orders and one-off parts for testing. At the same time, large OEM batches are welcomed. Our team works closely with clients to provide tailored solutions.
Describe the various products or categories, such as:
Phenolic fabric tubes, also called bakelite tubes or fabric-reinforced bushings, are made by hot-rolling cotton fabric that is coated with phenolic resin. As a result, these parts provide excellent insulation, good wear resistance, and strong mechanical performance. In addition, they are widely used for custom-made items such as bushings, washers, and structural insulators.
Key features:
✅ Compatible with CNC machining, carving, and trimming
✅ Customizable diameters available through mold development
✅ Reliable performance in humid and oil-filled environments
✅ Flame-retardant and long-lasting for industrial applications
3240 Epoxy Resin Boards and Parts are made from fiberglass cloth impregnated with epoxy resin, then hot-pressed and cured. They offer excellent mechanical strength, dielectric performance, and heat resistance. Ideal for electrical insulation parts, especially in humid environments or transformer oil.
Highlights：
✅ Made from alkali-free fiberglass cloth impregnated with epoxy resin
✅ Excellent mechanical strength and dielectric performance
✅ Smooth surface with no bubbles, oil stains, or impurities
✅ Stable under high temperatures and transformer oil environments
✅ Available in a wide range of thicknesses and board sizes
✅ Supports CNC machining, drilling, trimming, and engraving
✅ Easy installation and long service life
Technical Properties:
Highlights：
✅ G10 / FR4 epoxy grade
✅ CNC machined into bolts, nuts, and fasteners
✅ Flame-retardant, acid- and oil-resistant
✅ Stable dielectric performance
✅ Smooth surface without air bubbles or contaminants
✅ Customizable diameters and lengths
✅ Long service life in harsh conditions
FR4 Epoxy Insulation Rods and Bolts are manufactured by pultruding fiberglass filaments impregnated with epoxy resin under high temperature and vacuum-controlled extrusion. These rods offer excellent dielectric properties, high mechanical strength, and smooth surfaces free from bubbles, oil, or impurities.
Available in multiple diameters (⌀6mm–⌀170mm), shapes (round, hex, square), and customizable lengths. Ideal for electrical insulation structures exposed to heat, humidity, and transformer oil.
Product Features：
Stable electrical insulation performance
Excellent flatness and smooth surface with no pits or dents
Flame-retardant, heat-resistant, and environmentally friendly
Sound-absorbing and thermal-insulating properties
Suitable for high-performance electrical and electronic insulation
Applications:
FR-4 fiberglass boards are widely used in:
FPC stiffeners and soldering-resistant carriers
PCB testing fixtures and precision gear plates
Electrical device insulation sheets and transformer parts
Motor insulation components and deflection coil terminal plates
Switch insulation boards and customized structural parts
Available Options:
Size: Customizable per request
Color: Standard water green
Thickness: Multiple options available
A fast, traceable workflow for CNC-machined insulation components.
Select high-quality phenolic sheets or laminated tubes according to application.
Raw boards or rods are cut into manageable blanks for further processing.
Ensure flatness or roundness before CNC machining for better accuracy.
Import CAD drawings and set machining parameters based on tolerances.
Use CNC routers or mills for drilling, slotting, contour shaping, and turning.
Edge polishing and chamfering to avoid sharp edges or fiber burrs.
Check critical dimensions using calipers or 3D probes; tolerance ±0.1mm.
Remove cutting dust and apply optional anti-humidity coating.
Parts are labeled, packed by batch, and dispatched within 7 days.
Get a quote in 24 hours.
Prototypes ready in 7 days.
Fast machining and quick delivery mean faster progress for your projects.
We focus on speed, accuracy, and strong quality for phenolic insulation parts.
We supply custom CNC phenolic resin parts for energy, aircraft, rail, and industry projects. As a result, you benefit from stable quality, long service life, and fast support. In addition, small orders and OEM drawings are welcome.
Set working temperature, electrical strength, or arc resistance based on your case. For example, parts are used in switchgear, the aircraft industry, and rail systems. Therefore, you can match safety rules more easily.
Choose plates, tubes, or sleeves. Bushings and blocks are also available. In addition, you can set OD, ID, length, and wall size to match the design. As a result, parts will fit smoothly into your project.
We offer drilling, slot cutting, and routing. Moreover, full 3D CNC milling is ready for complex shapes. Consequently, you gain both accuracy and speed in production.
Options include paper-based, fabric-based, or glass-filled resin. Therefore, you can balance protection and strength for each job. In fact, this choice makes it easy to adapt to cost and safety needs.
Each part is cut from layered resin stock. As a result, machining provides steady quality and tight accuracy. On the other hand, fast steps reduce both cost and time.
Edges can be beveled or polished. Additionally, anti-moisture coating or sanding is optional. Thus, you can improve both look and life span.
Add fixing holes, grooves, or notches as needed. Also, labels and batch marks can be included. In conclusion, you get parts that match your needs better.
Every batch is checked for accuracy, flatness, and edge finish. Consequently, inspection reports are available when needed. Overall, this ensures trust and stable supply for your business.
