Air-Drying Winding Varnish (OR 1xx)
Based on synthetic resin; cures at room temperature without an oven. Practical and economical for repair shops and field work.
- Dries fast, penetrates deeply
- Resistant to moisture, heat, acids and alkalis
- Glossy finish, stable hardness
Technical information
| Series | OR 1xx |
|---|---|
| Resin | Synthetic resin based |
| Curing | At room temperature, no oven needed |
| Thinner | T-100 |
| General thinning ratio | 3 parts varnish : 1 part thinner |
| Application | Dipping or brush |
| Best for | Motor repair, field work, single motors |
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.
When to use air-drying varnish
- You have no oven, or the motor does not fit in one,
- You run a repair shop with different motors every day,
- You work in the field without removing the motor,
- You are rewinding a general-purpose motor running in normal conditions.
For series production or motors in heavy duty, baking varnish OR 3xx gives higher bond strength.
How to apply
- Clean the winding; preheat old motors to drive out moisture.
- Thin the varnish with T-100, generally 3 parts varnish to 1 part thinner.
- Dip, or work it well between the turns with a brush.
- Let the excess drain; leave no pools.
- Leave to dry in a warm, dry, ventilated place for the time given in the TDS.
Points to watch
- Use its own thinner: Do not add another thinner such as T-300; drying will suffer.
- Do not mix with baking varnish: The two types are never combined in one can or dip tank.
- A cold workshop slows drying: Move the motor to a warm, ventilated place.
- For harsh conditions: On motors running in humid environments, an insulating top coat can be applied once the varnish is fully dry.
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 long does air-drying winding varnish take to dry?
Drying time depends on ambient temperature, humidity and film thickness. The product's drying time is given in the TDS; a warm, dry, ventilated place speeds it up.
Which thinner is used?
OR 1xx air-drying varnishes are thinned with T-100, generally 3 parts varnish to 1 part thinner.
Is it as durable as baking varnish?
It gives sufficient durability for general-purpose motors. Maximum bond strength, heat and moisture resistance and resistance to hot transformer oil come from baking varnish.