Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine delivers exceptional tuning accuracy and velvety-smooth operation, featuring an upgraded 1:18 gear ratio. As an evolution of the legendary enclosed tuner design established in 1966, this model pairs time-tested reliability with modern mechanical engineering.
Precision CNC-machined components and high-grade brass posts ensure maximum wear resistance and rock-solid pitch stability. Each enclosed unit is permanently lubricated with Schaller special grease for completely maintenance-free performance, backed by a self-locking drive mechanism for sensitive adjustments.
Installation is straightforward thanks to identical mounting dimensions with predecessor models and the innovative stepped M6 flanged washer. This washer centers the string post securely without requiring stepped peghead drilling, effectively eliminating tilting torque and protecting your instrument headstock.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| Weight per Unit (Small / Large Button) | 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) including banjonut |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) driving surface |
| Post Material | High-Grade Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Weight | 0.13 lb |
