Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents the continuous evolution of a legendary closed tuner design, offering unmatched precision and exceptional tuning comfort. Engineered with a refined 1:18 gear ratio, it delivers velvety-smooth and precise adjustments across all playing styles.
Every component is CNC-machined to exact tolerances and surface-finished for lasting durability. High-grade brass string posts fit tightly into the housing to maximize tuning stability and eliminate wear, while self-locking internal gearing maintains consistent string tension without slipping.
Featuring the innovative stepped M6 flanged collar, this tuner installs effortlessly without requiring stepped headstock drilling. The design eliminates tilting torque and reduces strain on both the post and mounting screws, while internal permanent grease lubrication ensures lifetime maintenance-free performance.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Borehole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Single Tuner with Button (Small / Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid / Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) including hollow screw |
| Product Weight | 0.79 lb |
| Lubrication | Permanent special grease (maintenance-free) |
