DuPont Molykote EM-D110 Grease for Plastic Gears & Driveshaft Spline Noise Reduction
Molykote® EM-D110 is a high-viscosity PAO-based grease with lithium soap thickener, specifically designed for plastic components. It appears as a white grease with NLGI grade 0-1, silicone-free, effectively reducing noise from plastic gears and suitable for applications requiring cleanliness.
| Property | Test Standard | Unit | Value |
|---|---|---|---|
| Appearance | – | – | White |
| Base Oil Viscosity @ 40°C | – | mm²/s | 9,850 |
| Penetration (Worked 60x) | JIS K 2220 | – | 360 |
| NLGI Grade | – | – | 0 to 1 |
| Service Temperature | – | °C | -10 to 150 |
| Density | – | g/cm³ | 0.86 |
| Drop Point | JIS K 2220 | °C | 195 |
| Oil Bleed (100°C, 24h) | JIS K 2220 | % | 2.5 |
| Evaporation Loss (99°C, 22h) | JIS K 2220 | % | 0.2 |
| Oxidation Stability (99°C, 100h) | JIS K 2220 | MPa | 0.02 |
| Copper Corrosion (100°C, 24h) | JIS K 2220 | – | 1a |
Developed by DuPont under the Molykote brand, this grease incorporates PTFE and other solid lubricants to deliver long service life and damping performance. Its base oil viscosity reaches 9850 mm²/s at 40°C, ensuring stable performance across a broad temperature range from -10°C to 150°C.
The key advantage of EM-D110 lies in its compatibility with most plastics, significantly reducing engagement feedback and operational noise in plastic gears. Its low-bleed characteristic (2.5% oil separation at 100°C for 24 hours) makes it ideal for precision electronics or office equipment. Additionally, it exhibits minimal evaporation loss (0.2% at 99°C for 22 hours) and excellent oxidation stability (0.02 MPa pressure drop after 100 hours at 99°C).
Molykote EM-D110 is primarily used in automotive driveshaft spline connections to reduce engagement shock and noise. It is also widely applied in office equipment (e.g., printers, copiers) plastic gearboxes, reduction motor gears, and home appliance (e.g., robotic vacuum cleaners, electric curtains) plastic transmission mechanisms, where its damping properties help smoothen motion and extend service life.
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