Yellow Epoxy Resin Rod, Excellent Machinability, for Bushings and Spacers, Factory Direct Supply

Product Description

Epoxy Rod – High-Strength Insulating & Structural Composite

Manufactured by Youda Insulation Materials Co., Ltd.

Precision Engineered | Customizable | Global Export Ready

Product Description

The epoxy rod is a high-performance thermoset composite made from pure epoxy resin, offering excellent electrical insulation properties and mechanical strength. Unlike FR4/G10 rods which contain glass fiber reinforcement, pure epoxy rods are homogenous, providing uniform characteristics throughout the material. This makes them ideal for applications requiring precise machining and superior dielectric performance.

Available in a distinctive yellow color, these rods are often used in electrical insulation, precision tooling, and laboratory equipment where chemical resistance and dimensional stability are crucial.

Specification

Property	Epoxy Rod
Material	Pure Epoxy Resin
Standard Color	Yellow (standard)
Diameter Range	2 mm - 100 mm
Density	1.17–1.25 g/cm³
Standard Length	1000 mm (custom lengths available)
Diameter Tolerance	±0.1 mm (as-molded); ±0.05 mm (ground)
Water Absorption (24h)	≤ 0.1%
Flexural Strength	≥ 120 MPa
Tensile Strength	≥ 80 MPa
Compressive Strength	≥ 150 MPa
Dielectric Strength	≥ 15 kV/mm
Volume Resistivity	>1.0 × 10^14 Ω·cm
Surface Resistivity	>1.0 × 10^14 Ω/sq
Arc Resistance	≥ 90 seconds
Operating Temperature	-40°C to +120°C (short-term up to 150°C)
Machinability	Excellent – suitable for CNC, drilling, turning, milling

Key Advantages

 Product Benefits
   ♦ Superior Electrical Insulation: Ideal for high-voltage components and insulating parts.
   ♦ High Chemical Resistance: Withstands oils, solvents, acids, and alkalis.
   ♦ Excellent Dimensional Stability: Maintains shape and size under varying environmental conditions.
   ♦ Non-Conductive & Non-Magnetic: Perfect for sensitive electronic and medical devices.
   ♦ Easy to Machine: Can be drilled, milled, turned, or tapped using standard tools without special equipment. 

 Why Choose Youda?
   ♦ Decades of Manufacturing Expertise: Specializing in epoxy-based composites.
   ♦ In-House Quality Control: From raw materials to finished products—full traceability.
   ♦ Global Reach: Trusted by clients across North America, Europe, Japan, and Southeast Asia.
   ♦ Customization Services: From prototype to mass production—tailored to your specifications.
   ♦ Technical Support Team: Engineers ready to assist with material selection, design optimization, and DFM advice.

Common uses include:

♦Insulating bushings, standoffs, and terminal blocks
♦PCB test fixtures and semiconductor handling tools
♦Laboratory equipment and high-vacuum components
♦Precision tooling and molds
♦Electrical connectors and insulators

FAQ

Q1: What's the difference between epoxy rods and FR4/G10 rods?
A: Epoxy rods are made from pure epoxy resin, while FR4/G10 rods contain glass fiber reinforcement. Epoxy rods offer more uniform properties but lower mechanical strength compared to FR4/G10 rods. They are ideal for applications requiring precise machining and superior dielectric performance.

Q2: Can I machine epoxy rods on my own CNC or lathe?
A: Yes. Use carbide or diamond-coated tools and moderate speeds. Always use dust extraction—machining produces fine epoxy dust that requires proper ventilation and PPE.

Q3: What's the max temperature these rods can handle?
A: Continuous use up to 120°C; short-term exposure up to 150°C is acceptable. Beyond this, epoxy may soften and lose strength.

Q4: Do you offer rods with very tight diameter tolerances?
A: Yes. We provide centerless-ground epoxy rods with tolerance down to ±0.02 mm for precision applications like semiconductor tooling or medical devices.

Q5: How do I choose the right size for my project?
A: Consider:

 ♦ Required dielectric strength (thicker = higher voltage rating)
 ♦ Mechanical load (larger diameter = higher bending resistance)
 ♦ Installation space
  Share your drawing—we'll help select the optimal grade and dimensions.

Q6: Can I get samples before ordering?
A: Absolutely. We offer free samples (shipping cost may apply) so you can evaluate color, texture, and machinability firsthand.

Q7: Are epoxy rods suitable for outdoor or humid environments?
A: Yes—they have very low moisture absorption (<0.1%), so they won't swell or degrade in humidity. However, prolonged UV exposure may cause surface yellowing; for long-term outdoor use, consider protective coating or UV-stable alternatives.