MOLYKOTE 44
Harmonization Code : 3403.19 | Lubricating Preparations (With 70% or More Petroleum Oils) For Automotive and Other Uses
Main features
- -40 to 200 deg C Service Range
- 2.5% Bleed at 150 deg C
- NLGI 2-3 Silicone Grease
Product Description
MOLYKOTE® 44 Medium High Temperature Grease is a white-to-off-white, NLGI 2–3 silicone-oil grease thickened with lithium soap for bearings and other lubricated contacts across a documented -40°C to 200°C service range. Its 125 mm²/s base-oil viscosity at 25°C, 240–280 mm/10 worked penetration, and maximum Dn value of 300,000 support evaluation across different bearing speeds and application methods. Typical retention data include 2.5% bleed and 2.0% evaporation after 24 hours at 150°C, while water washout is 1.0% at 38°C. Applications include oven-fan, textile-dryer, conveyor, kiln-preheater, and automotive clutch-release bearings, as well as selected plastic parts.
Key features
- Broad operating range: Documented service temperature range of -40°C to 200°C for high-temperature and general bearing evaluation.
- Controlled grease consistency: NLGI 2–3 with 240–280 mm/10 worked penetration and a 125 mm²/s silicone base oil at 25°C.
- High-temperature retention data: Typical bleed of 2.5% and evaporation of 2.0% after 24 hours at 150°C.
- Oxidation and water-resistance data: DIN 51808 pressure loss of ≤100 mbar after 100 hours at 99°C and 1.0% water washout at 38°C.
- Flexible application: Apply to clean lubrication points by brush, spatula, or automatic lubrication equipment.
Applications / Suitable for
- Oven-fan and textile-dryer bearings
- Conveyor and kiln-preheater bearings
- Automotive clutch-release bearings
- Selected plastic parts, subject to material-specific validation
TDS, SDS & Technical Documents
Technical Specifications
No specifications available.
Additional Information
MOLYKOTE® 44 Medium High Temperature Grease
A white-to-off-white, lithium-thickened silicone grease for bearings and selected plastic parts across a documented -40°C to 200°C service range. NLGI 2–3 consistency, a 125 mm²/s base-oil viscosity at 25°C, and controlled bleed, evaporation, oxidation, and water-washout data support application-specific evaluation.
MOLYKOTE® 44 Medium is supplied as a white-to-off-white silicone grease with NLGI 2–3 consistency.
As-supplied grease properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Appearance | White to off-white | — | As supplied |
| Base oil / thickener | Silicone oil / lithium soap | — | Product composition |
| Base-oil viscosity | 125 | mm²/s | Kinematic viscosity at 25°C |
| Worked penetration | 240–280 | mm/10 | CTM0190; 60 strokes |
| NLGI class | 2–3 | — | Consistency classification |
| Density | 1.0 | g/cm³ | Typical value |
Typical values are not specification limits.
Temperature and retention properties
| Property | Value | Unit | Method / condition |
|---|---|---|---|
| Service temperature range | -40 to 200 | °C | Documented product range |
| Drop point | 227 | °C | IP 396/02 |
| Bleed | 2.5 | % | ASTM D6184; 150°C for 24 hours |
| Evaporation | 2.0 | % | ASTM D6184; 150°C for 24 hours |
| Oxidative stability | ≤100 (≤0.01) | mbar (MPa) | DIN 51808; pressure loss after 100 hours at 99°C |
| Water washout | 1.0 | % | DIN 51807, part 2; 38°C |
| Maximum Dn value | 300,000 | mm/minute | Supplier-reported bearing-speed selection value |
Drop point is a test transition and is not the maximum continuous operating temperature. All values are typical and should be evaluated under the intended bearing and service conditions.
Prepare and apply the grease to clean lubrication points
Application is straightforward, but grease quantity, delivery method, component materials, and existing lubricant condition should be reviewed for the specific bearing or mechanism.
Store unopened in a cool, dark place. Usable life is 60 months from the date of production. Review current product safety information and the container label before handling.
High-temperature bearing applications
Documented applications center on bearings exposed to elevated temperature or broad operating-temperature changes. Final suitability depends on bearing design, speed, load, materials, grease quantity, and relubrication practice.
Evaluate MOLYKOTE® 44 Medium for your bearing application
Krayden can help review bearing type, load, speed, temperature, plastics compatibility, grease quantity, application method, and relubrication requirements for oven fans, dryers, conveyors, kiln equipment, automotive bearings, and related mechanisms. Contact us to discuss product fit, samples, or an application-specific evaluation plan.
