Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high-precision engineering with an upgraded 1:18 gear ratio for ultra-smooth and accurate tuning. Originally introduced in 1966 as a worldwide benchmark for enclosed tuners, this series incorporates refined performance innovations while preserving its iconic legacy.
Crafted with precision CNC-machined components and high-grade brass string posts, the M6 90 provides superior tuning stability and wear resistance. Every enclosed unit is permanently lubricated with Schaller special grease, ensuring maintenance-free operation and smooth performance throughout its lifespan.
Featuring an innovative stepped flanged washer, this tuning machine enables effortless installation and secure post centering without requiring stepped headstock drilling. It maintains identical installation dimensions to its predecessor for direct replacement on compatible instruments.
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt |
| Button Borehole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.79 lb |
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| String Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
