Overview

Automotive Plastic Insulating Supports provide electrical isolation and mechanical positioning for vehicle wiring harnesses, busbars, and electronic modules. Designed for high-vibration engine compartments and electric vehicle (EV) high-voltage powertrains, these components prevent short circuits, withstand continuous thermal stress, and secure routing paths. Engineered to meet strict tier-level standards, supporting custom geometries and material grades matched to specific vehicle platform requirements.

Specifications

Parameter	Technical Standard / Range
Material Options	PA66 (GF30), PBT (GF30), PC/ABS, PPS, PEEK
Operating Temperature	-40°C to +150°C (Standard) / up to +240°C (High-Heat Grades)
Flammability Rating	UL94 V-0
Dielectric Strength	20 kV/mm min.
Dimensional Tolerance	ISO 2768-mK (Precision injection molding down to ±0.03 mm)
Compliance & Traceability	IATF 16949, RoHS, REACH, IMDS Material Data Reporting

Features

Dielectric Isolation: Prevents electrical arcing and leakage current in high-voltage EV powertrains and 12V/48V distribution networks.

Thermal & Mechanical Stability: Glass-filled thermoplastic matrices maintain structural integrity under continuous thermal cycling and engine-bay vibrations.

Chemical Resistance: Withstands exposure to automotive fluids, including engine oil, coolant, battery electrolyte, and road salt.

Precision Fit: Molded wire-routing channels and snap-fit geometries eliminate harness chafing and rattling.

Materials & Manufacturing

Resin Selection: Sourced from tier-1 resin suppliers (e.g., DuPont, DSM, BASF) featuring verified lot traceability. Predominantly utilize flame-retardant PA66-GF30 and hydrolysis-resistant PBT.

Injection Molding Capability: Produced using closed-loop electric injection molding machines (80T to 500T clamping force) equipped with automated hot-runner molds to eliminate gate vestiges and ensure uniform density.

In-House Tooling: CNC machining and EDM mold fabrication shorten sample lead times and allow tight control over shrinkage rates for engineering plastics.

Applications

Electric Vehicle (EV) Powertrains: Busbar isolation and high-voltage battery module partitioning.

Under-Hood Engine Compartments: Sensor brackets and main wiring harness routing clips operating near exhaust and thermal zones.

Power Distribution Units (PDUs): Structural mounts for fuses, relays, and heavy-gauge terminals.

Electronic Control Units (ECUs): Internal PCB support frames and external housing insulators.

Customization

Geometry: Custom wall thicknesses, ribbing, snap-latches, and mounting interfaces engineered directly from customer STEP/IGES files.

Color Coding: Pigmentation options available for high-voltage identification (e.g., safety orange) or multi-circuit harness segregation.

Insert Molding: Integration of brass, copper, or stainless-steel threaded inserts and studs during the molding cycle for high-torque fastening.

QC & Manufacturing Control

Process Monitoring: Real-time cavity pressure and temperature sensors on injection presses track melt flow consistency per shot.

Dimensional Inspection: Automated optical measuring systems (CMM/projectors) verify critical dimensions against 2D drawing datums.

Laboratory Testing: Batch-level testing verifies tensile strength, melt flow index (MFI), moisture content in polyamides prior to molding, and UL94 flammability verification.

Quality Standard: Plant operated under strict IATF 16949 quality management protocols. Full PPAP Level 3 documentation package available upon request.

FAQ

Q: What is the typical lead time for custom tooling and samples?

A: Tooling fabrication takes 3 to 4 weeks. Initial sample inspection reports (ISIR) and 5-10 trial parts are delivered within 5 weeks of drawing approval.

Q: Do you provide IMDS material data submissions?

A: Yes. Material composition data is submitted directly through the International Material Data System prior to mass production PPAP approval.

Q: How do you prevent moisture absorption issues in PA66 parts?

A: Raw materials are dried using dehumidifying dryers to under 0.05% moisture content before molding, and finished parts are sealed in moisture-barrier vacuum packaging.

Q: What file formats are accepted for RFQ evaluation?

A: STEP, IGES, Parasolid for 3D geometry, and PDF with GD&T tolerances for 2D manufacturing drawings.

RFQ

To request a quotation or technical feasibility review, please provide:

2D/3D CAD data (STEP format preferred).

Estimated annual volume (EAU), batch size requirements, and target minimum order quantity (MOQ).

Operating environment specifications (temperature extremes, electrical voltage, chemical exposure).

Required quality documentation level (e.g., PPAP Level 1–3, IMDS ID).

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