Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning performance with its refined 1:18 gear ratio. All components are CNC-machined to exact tolerances and feature a self-locking drive mechanism that guarantees even, sensitive, and stable tuning under all playing conditions.
Equipped with high-grade brass posts fitted seamlessly into the housing, this closed tuning machine offers superior tuning stability and wear resistance. Each unit is permanently lubricated with proprietary Schaller special grease, making the entire mechanism completely maintenance-free over its lifetime.
Installation is straightforward thanks to the innovative stepped M6 flanged washer, which reliably centers the string post and eliminates tilt without requiring step-drilled headstock holes. Sharing identical mounting dimensions with its predecessor, it serves as a direct, modification-free replacement for classic guitar setups.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 90 |
| SKU | 10050423.05.55 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| String Post Material | High-grade brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Button Borehole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Mounting Compatibility | Direct replacement matching standard M6 dimensions |
