Armature Varnish
Low-viscosity varnish for armature and rotor windings. Prevents wires from lifting in high-speed armatures and delays carbonization.
- Effective penetration into the winding
- High-speed motors and submersible pumps
- Easy, practical application
Technical information
| Use | Armature and rotor windings |
|---|---|
| Character | Low viscosity, penetrates deep into the winding |
| Suitable motors | High-speed motors, submersible pumps |
| Benefits | Keeps winding wires from lifting, delays carbonization |
| Application | Easy and practical; details in the TDS |
Drying time, viscosity, solids content, packaging and shelf life are given in the product's technical data sheet (TDS). Request the TDS and safety data sheet (SDS) via WhatsApp.
Why a separate varnish for armatures?
Armature and rotor windings are subject to centrifugal force as they turn. At high speed the wires move and try to lift out of the slots. Thanks to its low viscosity, armature varnish reaches between the wires and bonds them together, preventing this movement and delaying carbonization caused by friction and heat.
Where it is used
- Power tool and universal motor armatures,
- High-speed motor rotors,
- Submersible pump motors.
How to apply
- Clean the armature; preheat old parts to remove moisture.
- Apply by dipping or by working the varnish between the turns.
- Drain the excess thoroughly; varnish build-up on an armature can upset its balance.
- Dry as described in the TDS and check balance afterwards if needed.
For general varnish selection, see which winding varnish to use.
Which varnish is right for you?
Tell us your motor type, operating temperature and application method, and we will send the suitable Orchem varnish and its TDS.
Frequently Asked Questions
How does armature varnish differ from regular winding varnish?
Armature varnish has a lower viscosity and is designed to penetrate deep into a rotating winding. Its purpose is to keep the wires from moving at high speed.
Can it be used on submersible pump motors?
Yes. Armature varnish is suitable for submersible pumps and high-speed motors. For the stator winding, baking varnish OR 3xx can also be considered.
How long does it take to dry?
Drying time and application details are given in the product's TDS; you can request it via WhatsApp.