Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an improved 1:18 gear ratio. Continuing the legacy of the original closed-type tuner introduced in 1966, this updated design combines time-tested engineering with modern performance refinements.
Every component is precision CNC-machined and surface-finished, featuring high-grade brass posts engineered for wear-free operation and maximum tuning stability. The self-locking drive mechanism provides a uniform, delicate, and reliable response, while permanent lubrication with Schaller special grease ensures completely maintenance-free performance.
Equipped with an innovative stepped M6 flanged washer, this tuner allows for straightforward installation without the need for stepped headstock boreholes. It features identical installation dimensions to its predecessor for easy retrofitting, eliminating tilting moments and effectively distributing mechanical tension across the headstock.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| SKU | 10050570.01.37 |
| Gear Ratio | 1:18 |
| Weight | 0.13 lb |
| Post Material | Brass |
| Button Borehole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
