Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents the pinnacle of precision tuning technology. Featuring a refined 1:18 gear ratio, it provides velvety-smooth action and exceptional tuning stability. All components are CNC-machined to exacting tolerances and treated with specialized surface finishes to deliver reliable, sensitive, and backlash-free performance.
Constructed with high-grade brass posts precisely fitted into the housing, the M6 90 prevents wear and preserves string pitch accurately under demanding playing conditions. The closed housing design is permanently lubricated with Schaller special grease, rendering the internal mechanism completely maintenance-free throughout its lifespan.
Installation is simplified through the innovative stepped M6 flanged washer, which centers the string post without requiring stepped headstock boreholes and eliminates tilting torque. With identical installation dimensions to its predecessor, it serves as a seamless, direct replacement upgrade for guitars requiring a 90-degree mounting tab configuration.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | 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: 1.06 oz / 1.09 oz (30 g / 31 g), Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.13 lb |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
