Stator Varnish Machine

About Stator Varnish Machine

Trickle Varnish Impregnation Machine for Rotor & Stator.....

EZ Cleantech Automations Trickle Varnish Machine is a purpose-built impregnation system designed to deliver uniform varnish penetration in rotor and stator winding with high repeatability and production-friendly operation. The machine applies varnish in a controlled flow (trickle) directly onto the winding zone while the job rotates, ensuring consistent coating thickness, reduced varnish wastage, and reliable electrical insulation performance.

Engineered for motor and generator manufacturing lines, the system improves dielectric strength, moisture resistance, vibration durability, and winding life, while maintaining stable cycle time and clean shop-floor operation.

Key Benefits:

• Uniform impregnation across slots and end winding
• Better insulation quality improved dielectric and long-term performance
• Reduced varnish consumption compared to manual dip & drain methods
• Consistent cycle time with minimal operator dependency
• Cleaner process with controlled dripping and collection system
• Higher productivity with batch or conveyorised configurations

Working Principle:

1. Loading & Clamping: Rotor/stator is loaded on fixture; clamping ensures stable rotation.
2. Pre-Heating (Optional/Integrated): Component is heated to target temperature to improve varnish wetting and penetration.
3. Rotation + Trickle Application: A metered varnish flow is applied through nozzle(s) while the component rotates at set RPM.
4. Soak / Gel / Drain Control: Controlled dwell ensures varnish flow into winding; excess varnish is collected and recycled.
5. Curing / Baking (Optional/Integrated): Component is transferred to curing zone/oven to achieve final insulation strength.

Major Technical Features:

• Servo/VFD controlled rotation for accurate RPM and repeatable impregnation
• Programmable varnish dosing (flow control / pump control) for consistent quantity per job
• Adjustable nozzle positioning for rotor & stator geometries
• Heated varnish tank (optional) with temperature control for viscosity stability
• Drip tray + filtration + re circulation to minimise varnish loss and keep the system clean
• PLC + HMI based recipe control (RPM, time, flow, temperature)
• Safety interlocks: door safety, over-temperature, motor overload, emergency stop, spill handling
• SS contact parts (recommended) for long life and easy cleaning

Configurations Available:

• Standalone Trickle Station (manual load/unload)
• Rotary Indexing Type (multi-station for higher output)
• Chain Conveyorised Trickle + Heating + Curing Line (continuous production)
• Rotor + Stator dual-side arrangement (as per layout & cycle requirement)

Typical Applications:

• Small and medium motors, alternators, genset rotors/stators
• Automotive motor windings, industrial motor stators
• Any winding needing controlled impregnation and repeatable quality