Bonding Agent/Adhesive: Viscosity 500-5000 cP

Component Specifications

Definition

A thermosetting or anaerobic adhesive specifically formulated for bonding stacked electrical steel laminations in electric motor stators. It creates a rigid, vibration-damping bond between laminations while maintaining electrical insulation properties, preventing eddy current losses and reducing acoustic noise during motor operation.

Working Principle

The adhesive is applied between laminations before stacking, then cured under pressure and/or heat. During curing, it polymerizes to form a solid, insulating layer that mechanically bonds laminations together while maintaining electrical separation. This prevents relative movement between laminations that causes vibration and noise.

Materials

Typically epoxy resins (single or two-component), anaerobic acrylics, or modified phenolic compounds with dielectric fillers like silica or alumina. Formulations include thermal conductivity enhancers and corrosion inhibitors.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Cure Time	30-120 minutes at 80-150°C
Viscosity	500-5000 cP
Shelf Life	6-12 months
Shear Strength	10-25 MPa
Dielectric Strength	>15 kV/mm
Thermal Conductivity	0.5-2.0 W/m·K
Operating Temperature	-40°C to 180°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 4587, ISO 6721, DIN EN 60455, ASTM D1002

Parent Products

This component is used in the following industrial products

Electric Motor Stator Lamination Stack

Precisely stacked and bonded electrical steel laminations forming the stationary magnetic core of an electric motor.

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Engineering Analysis

Risks & Mitigation

Incomplete curing leading to bond failure
Thermal degradation at high temperatures
Chemical incompatibility with motor fluids
Void formation during application reducing bond strength
Moisture absorption affecting dielectric properties

FMEA Triads

Trigger: Incorrect mixing ratio of two-component adhesives
Failure: Incomplete polymerization and weak bond strength
Mitigation: Automated mixing and dispensing systems with ratio verification

Trigger: Insufficient cure time or temperature
Failure: Partial curing leading to premature bond failure
Mitigation: Precise temperature control and cure monitoring systems

Trigger: Contamination of lamination surfaces
Failure: Poor adhesion and delamination
Mitigation: Surface cleaning protocols and contamination testing

Trigger: Thermal cycling stress
Failure: Fatigue cracking and bond degradation
Mitigation: Adhesive formulation with flexible modifiers and proper thermal design

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

Bond line thickness: 0.05-0.15 mm ±0.02 mm; Coverage: >95% of bonding area

Test Method

Shear strength testing per ISO 4587, dielectric strength testing per IEC 60243, thermal cycling testing per IEC 60068-2-14, vibration testing per IEC 60068-2-6

Procurement Evaluation Criteria

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

Compare the published product scope and source details, then include your specifications and quantity in an enquiry.

Manufacturers of Bonding Agent/Adhesive

Manufacturer profiles associated with Bonding Agent/Adhesive.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

Related Components

Terminal Base

A terminal base is an insulating support structure that holds and organizes electrical terminals in motor terminal blocks, providing secure connections and circuit management.

Contact Plate

A conductive plate in motor terminal blocks that establishes electrical contact between conductors.

Marking Strip

A durable marking strip used for terminal identification in motor terminal blocks to ensure proper electrical connections and safety compliance.

Gland Body

A gland body is the main housing component of an aluminum cable gland that provides mechanical protection and environmental sealing for electrical cables entering enclosures.

Frequently Asked Questions

Why use adhesive instead of welding or mechanical fastening for stator laminations?

Adhesive bonding provides electrical insulation between laminations to prevent eddy currents, reduces vibration and acoustic noise more effectively than mechanical methods, and distributes stress evenly without creating stress concentrations.

What are the main failure modes of stator bonding adhesives?

Thermal degradation at high operating temperatures, chemical degradation from lubricants or coolants, insufficient curing leading to bond failure, and thermal cycling fatigue causing delamination.

How is adhesive application quality controlled in manufacturing?

Through viscosity monitoring, precise dispensing systems, cure monitoring via temperature profiles, and post-cure testing including shear strength tests and dielectric strength verification.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

Preliminary Technical Classification

This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

Bonding Agent/Adhesive