Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 series guitar tuning machine sets an industry benchmark for precision and tuning stability. Engineered with a 1:18 gear ratio, it provides a smooth, accurate, and reliable tuning experience across a variety of instrument configurations.
Every component is CNC-machined to exacting tolerances, featuring premium brass posts precisely fitted into closed housings. Permanently lubricated with specialized grease, these tuning machines remain entirely maintenance-free while offering long-lasting wear resistance.
Equipped with an innovative stepped washer, the design ensures effortless installation and solid post centering without requiring stepped headstock drilling. This construction eliminates tilting torque and reduces mechanical stress on mounting screws and string posts.
| Brand | Schaller |
| Product Line | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Housing Type | Closed / Sealed |
| Lubrication | Permanently lubricated with Schaller special grease |
