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- info@vaj.it
- Via Salvore, 48 - 21100 VARESE - ITALY
Development and production of components for machine tools since 1949.
Our way wipers are available in different shapes and materials, depending on the application and type of application. The main categories available in our catalog include:
The choice of material is essential to ensure durability, scraping effectiveness and compatibility with the working environment:
| Material | Typical applications | Notes |
|---|---|---|
| NBR Nitrile Rubber | Mineral lubricating oils, standard applications | Good abrasion resistance in lubricated environments |
| NBR + PTFE | Dry or poorly lubricated applications | Anti-friction coating available |
| FKM (Viton®) | Presence of aggressive chemical agents | High chemical resistance, use in critical environments |
To obtain an effective and long-lasting scraping, it is essential to respect some basic rules during assembly:
| Problem | Possible cause | Recommended action |
|---|---|---|
| Failure to scrape | Insufficient or no preload | Check preload along the entire guide and compatibility of the way wipers/guide and centering + parallelism between the moving parts of the machine |
| Tear of the lip | Excessive preload or incorrect direction of the lip | Check preload along the entire guide and compatibility of the way wipers/guide and centering + parallelism between the moving parts of the machine |
| Lip swelling | Chemical incompatibility between rubber and fluids/washes | Check the composition of the fluids and contact the manufacturer for support |
| Rapid lip abrasion | Dry running with unsuitable material | Choose a material suitable for dry operation (e.g. NBR+PTFE) |