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CASTROL Optigear BM 320
High Performance Gear Oils
Application CASTROL Optigear BM 320
Optigear BM is suitable for gears and bearings operating under normal to extreme conditions. Extreme pressure additives make Optigear BM suitable where there is a need to maintain high load carrying capacity while protecting against scuffing and shock loading. Optigear BM 68 and BM 220 can also be used as slideway oils subject to a metalworking fluid compatibility check.
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Performance, Features & Benefits of CASTROL Optigear BM 320 are:
- Tests have shown a reduction in the coefficient of friction of up to 60% over conventional oils without PD technology which can deliver energy savings, lower lubricant and component temperatures and improve operational efficiency
- In laboratory tests Castrol PD additives were shown to prevent the progression of micro-pitting in pre-damaged gears. Non-PD oils used in pre-damaged gears showed existing wear levels increased up to three times
- Smoothing existing gear damage reduces the cost of repairs and replacements and improves operating efficiency by increasing equipment reliability
- Friction, heat and vibration are reduced
- Oil with Castrol PD additives provides superior protection with wear levels of less than half those observed in tests with conventional non-PD oil³ to help extend planned gear and bearing life
- Extended lubricant service life and relubrication intervals can help to reduce costs and waste oil disposal
- Full load operation is achieved in a short time, virtually eliminating the running-in period
- Optigear BM 68 and BM 220 CGLP slideway oils. (Subject to metalworking fluid compatibility check)
If you have any questions, please contact OlieOnline Technical Helpdesk
Product Description CASTROL Optigear BM 320
Castrol Optigear™ BM is a range of high-performance extreme pressure gear oils, developed to tackle wear-related problems in heavily loaded industrial gears and bearings. Optigear BM is formulated with Castrol's Microflux Trans (MFT) Plastic Deformation (PD) additive. MFT PD helps improve performance when operating temperature and loads reach a certain level of activation energy, by enabling the microsmoothing of surface roughness without increasing wear. The smoothed surface delivers optimum wear protection and an extremely low coefficient of friction, especially in applications which experience extreme pressure, shock loads, vibrations or low speeds. MFT PD helps to protect against scuffing and shock loading, while maintaining a high load carrying capacity, and can help prevent the progression of micro-pitting in pre-damaged gears. Specific grades within the Optigear BM range meet the requirements of DIN 51517 part 3 CLP and the requirements of a wide range of industrial bodies and equipment manufacturers. Optigear BM 68 and BM 220 are also classified as CGLP oils (DIN 51502).
Typical Characteristics
| Product specifications : | CASTROL Optigear BM 320 | |
| Colour | visual | Brown |
| ISO Viscosity Group | - | 320 |
| Density @ 15°C / 59°F kg/m³ | ISO 12185 / ASTM D4052 |
910 |
| Kinematic Viscosity @ 40°C / 104°F mm²/s | ISO 3104 / ASTM D445 | 320 |
| Kinematic Viscosity @ 100°C / 212°F mm²/s | ISO 3104 / ASTM D445 | 24.9 |
| Viscosity Index | ISO 2909 / ASTM D2270 | 100 |
| Flash Point - open cup method °C/°F | ISO 2592 / ASTM D92 | 235/ 455 |
| Pour Point °C/°F | ISO 3016 / ASTM D97 | -15/5 |
| Copper corrosion (3 hrs@100°C/ 212°F) Rating |
ISO 2160 / ASTM D130 | 1 |
| Rust test - distilled water (24 hrs) | ISO 7120 / ASTM D665A | Pass |
| Rust test - synthetic seawater (24 hrs) | ISO 7120 / ASTM D665B | Pass |
| FZG Gear Scuffing test - A/8.3/90 Failure Load Stage | ISO 14635-1 | >12 |
| FZG Micropitting tests @ 60°C/140°F and 90°C/194°F Failure Load Stage, Micropitting Rating |
FVA 54-7 | >10 high |
| FE8 Bearing Wear Test (F.562831.01-7.5/80-80) Roller Wear, mg |
DIN 51819-3 | <10 |
Additional Information
Miscible and compatible with most mineral oil based gear oils. However, maximum performance is only guaranteed if not mixed with any other product. Compatible with non-ferrous metals. Compatible with most paints and conventional sealing materials. Mechanical cleaning with all known filtering installations and separators possible.
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