Description
Harmonic SK-3 is a mineral-oil-based lithium soap grease (NLGI grade 2) designed for strain wave reducers subject to variable loads. FANUC specifies SK-3 for the J6-axis harmonic reducers of several small and mid-size robots, and as an alternative to 4B No.2 on some older models. It provides stable torque transmission and reduces flexspline tooth wear between -10 °C and +70 °C. A standard maintenance item supplied in beige 2.5 kg cans for periodic wrist regreasing.
Specifications
- Manufacturer: Kyodo Yushi / Harmonic Drive Systems
- FANUC part number: A98L-0040-0110
- Size: 2.5 kg can
- Applications: J6 wrist harmonic reducers on older LR Mate, M-6i and ArcMate 100i; some medium-load wrist gearboxes