BAKLUCK PAO 40B provides a measured reference for a PAO 40B synthetic hydrocarbon base stock rather than an unsupported performance promise. Its published data includes density at 15.6 °C of 0.838 g/cm³ by ASTM D1298, kinematic viscosity at 100 °C of 39.8 mm²/s by ASTM D445, and kinematic viscosity at 40 °C of 402 mm²/s by ASTM D445. For development teams, those markers help judge whether the grade merits trials in heavy synthetic gear and bearing-oil blends or in grease base-fluid trials requiring a high-viscosity PAO. The final decision must account for additive response, viscosity after blending, thermal exposure, seals and the governing finished-fluid specification. Confirm the selected formulation experimentally and obtain current BAKLUCK technical documentation plus a batch COA before approving commercial use.
PAO 40B
The typical-property table gives PAO 40B a 39.8 mm²/s 100 °C viscosity marker for assessing heavy synthetic gear and bearing-oil blends.
Product overview
BAKLUCK PAO 40B provides a measured reference for a PAO 40B synthetic hydrocarbon base stock rather than an unsupported performance promise. Its published data includes density at 15.6 °C of 0.838 g/cm³ by ASTM D1298, kinematic viscosity at 100 °C of 39.8 mm²/s by ASTM D445, and kinematic viscosity at 40 °C of 402 mm²/s by ASTM D445. For development teams, those markers help judge whether the grade merits trials in heavy synthetic gear and bearing-oil blends or in grease base-fluid trials requiring a high-viscosity PAO. The final decision must account for additive response, viscosity after blending, thermal exposure, seals and the governing finished-fluid specification. Confirm the selected formulation experimentally and obtain current BAKLUCK technical documentation plus a batch COA before approving commercial use.
Typical reference values
| Property | Typical value | Method |
|---|---|---|
| Appearance | Clear transparent liquid | Visual |
| Density at 15.6 °C | 0.838 g/cm³ | ASTM D1298 |
| Kinematic viscosity at 100 °C | 39.8 mm²/s | ASTM D445 |
| Kinematic viscosity at 40 °C | 402 mm²/s | ASTM D445 |
| Viscosity index | 149 | ASTM D2270 |
| Flash point (COC) | 250 °C | ASTM D92 |
| Pour point | -40 °C | ASTM D97 |
| ASTM color | <0.5 | ASTM D1500 |
| Odor | Odorless | ASTM D1296 |
| Acid number | 0.01 mg KOH/g | ASTM D974 |
| Water content | <100 ppm | ASTM D6304 |
| Low-temperature Brookfield viscosity at 0 °C | 5,640 mPa·s | ASTM D2983 |
| Evaporation loss at 150 °C for 24 h | 0.98 % | ASTM D972 |
Applications
- Heavy synthetic gear and bearing-oil blends
- Grease base-fluid trials requiring a high-viscosity PAO
Frequently asked questions
What is the practical selection value of PAO 40B?
Its position at 39.8 mm²/s 100 °C viscosity narrows the candidate set for heavy synthetic gear and bearing-oil blends; it does not establish certification or guaranteed finished performance.
What technical review should precede an order for PAO 40B?
For PAO 40B, review the intended application, additive package and operating range before requesting BAKLUCK TDS, COA and supply confirmation.
Final specifications are subject to the current TDS and batch COA.
Product Details
BAKLUCK PAO 40B provides a measured reference for a PAO 40B synthetic hydrocarbon base stock rather than an unsupported performance promise. Its published data includes density at 15.6 °C of 0.838 g/cm³ by ASTM D1298, kinematic viscosity at 100 °C of 39.8 mm²/s by ASTM D445, and kinematic viscosity at 40 °C of 402 mm²/s by ASTM D445. For development teams, those markers help judge whether the grade merits trials in heavy synthetic gear and bearing-oil blends or in grease base-fluid trials requiring a high-viscosity PAO. The final decision must account for additive response, viscosity after blending, thermal exposure, seals and the governing finished-fluid specification. Confirm the selected formulation experimentally and obtain current BAKLUCK technical documentation plus a batch COA before approving commercial use.
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