Description
Spheerol™ BNS 2 – High-Temperature Bearing Grease
Description: Castrol Spheerol™ BNS 2 is a high-temperature, non-melting grease for lubricating plain and roller bearings. It has no drop point and is formulated from an oxidation-resistant, thermally stable base oil with an inorganic thickener.
Application: Spheerol BNS 2 is suitable for lubricating bearings operating at high temperatures, such as soot blower bearings, carriage bearings for hardening, drying in tunnel ovens, and bearings in bitumen mixing plants, cranes in foundries, etc. Spheerol BNS 2 can be used within a temperature range of -20ºC to +150ºC, and for short periods at temperatures up to +220ºC. Frequent re-greasing or grease changes may be necessary depending on application requirements.
Advantages:
- High oxidation stability: Ensures long-lasting performance.
- Wide temperature range: Suitable for a variety of high-temperature applications.
- Easy to dispense: Simplifies application.
- Good protection against corrosion: Protects metal surfaces.
- Reduces mechanical wear: Extends bearing life.
Additional Information: To minimize potential incompatibilities when switching to a new grease, all previous lubricants should be removed as much as possible before operation. During initial operation, re-lubrication intervals should be closely monitored to ensure all previous lubricants are purged.
Typical Characteristics:
| Property | Method | Unit | Spheerol BNS 2 |
|---|---|---|---|
| Thickener Type | Bentone | ||
| NLGI Class | ISO 2137 | 2 | |
| Texture | Visual | Smooth | |
| Colour | Visual | Brown | |
| Dropping Point | IP 396 | °C | 300 min |
| Base Oil Kinematic Viscosity @ 40°C | ASTM D445 | mm²/s | 180-220 |
| Worked Penetration @ 25°C (60 strokes) | ASTM D217 | 0.1 mm | 265-295 |
| Working Stability (60 / 100,000 strokes @ 25°C) | ASTM D217 | 0.1 mm | – |
| Oil Separation (168 hr / 40°C) | IP 121 | % wt | 5 max |
| Anti-Rust Performance (Emcor) | IP 220 | Rating | 0/0 max |
| Oxidation Stability (100 hr / 100°C) | ASTM D942 | bar | 0.4 max |
| Copper Corrosion (24 hours @ 100°C) | ASTM D4048 | Rating | 1b max |
| Water Resistance (3 hr / 90°C) | ASTM D1264 / DIN 51 807/1 | Rating | 1-90 max |
| 4 Ball Weld Point | DIN 51806 | kg | 200 min |
| Flow Pressure @ -20°C | DIN 51805 | hPa | <1400 |
