Grease VNII NP-247
heat-resistant grease
Description
Grease VNII NP-247 TU 38.401352-81 close in composition to the lubricant VNIINP-207. Characterized by low water absorption and heat strengthened. The temperature range of -40 … + 180 ° C.
The main purpose of lubricants – reduced wear of the friction surfaces to extend the life of machine parts and mechanisms. In addition, the lubricant perform other functions. In some cases, they not only reduce wear as streamline it, preventing scuffing, galling and seizing of the friction surfaces. Lubricants to prevent the penetration of the friction surfaces of corrosive liquids, gases and vapors, as well as abrasive particles (dust, dirt and so on. P.).
Applications
Bearing Units mikroelektromashin low power and with speed up to 20,000 min-1, gears electrofans. Substitute -. VNIINP-207
Specifications
| Indicator | Norm |
|---|---|
| Dropping point, ° C, min | 200 |
| Penetration at 25 ° C? 10-1mm | 220-250 |
| Viscosity at 0 ° C and 10 sec-1 Pa · s, more | 220 |
| Tensile Strength, Pa, at 20 ° C | 690 |
| Colloid stability,%, no more than | 8 |
Additional information
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