Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents the pinnacle of closed tuning machine engineering, offering unmatched tuning comfort and precision. Engineered with a refined 1:18 gear ratio, this model delivers velvety-smooth and exceptionally accurate string adjustments. High-precision CNC machining and high-grade surface finishing ensure consistent, sensitive, and stable tuning performance across all playing conditions.
Crafted with premium brass posts precisely fitted into the housing, the M6 90 guarantees maximum tuning stability and wear-free operation. Every closed unit is permanently lubricated with Schaller special grease, making it completely maintenance-free throughout its lifespan. The innovative stepped M6 flanged washer centers the string post securely via the hollow screw, eliminating tilting moments and avoiding the need for stepped headstock drilling.
Featuring the exact installation footprint of its predecessor, the M6 90 serves as a direct drop-in replacement without requiring guitar modifications. It supports standard, locking, and top-locking configurations to accommodate solid and slotted headstocks alike. Every component is engineered to provide superior mechanical stability and enduring reliability for professional musicians.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Borehole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.79 lb |
