Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers refined performance and exceptional tuning stability. Built with a 1:18 gear ratio, it provides velvety smooth and precise adjustments, setting the benchmark for enclosed tuning machines. Each unit features CNC-machined components and high-grade brass posts engineered for wear-free durability.
Featuring the innovative stepped M6 flanged washer, this tuning machine centers the string post securely through the threaded bushing without requiring stepped headstock boreholes. This design eliminates tilting torque and reduces mechanical strain on both the string post and rear fixing screws.
Permanently lubricated with Schaller special grease, these maintenance-free tuners share identical mounting dimensions with their predecessors for straightforward replacement and upgrades.
| Brand | Schaller |
| Model | M6 90 |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| 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 threaded bushing |
| Button Borehole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
