Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high precision and legendary tuning stability. Engineered with an upgraded 1:18 gear ratio, it delivers velvety-smooth, highly sensitive, and exact tuning control across all playing styles.
Every component is CNC-machined to exact tolerances and surface-finished for flawless mechanical operation. Solid brass string posts fit precisely into the housing to maximize wear resistance and stability, while sealed housings with specialized permanent grease lubrication ensure completely maintenance-free performance.
Featuring the innovative stepped M6 flanged washer with a 0.39 in diameter base, this machine centers the string post automatically through the threaded bushing without requiring step-drilled headstock holes. Identical mounting dimensions to previous generations allow direct replacement without instrument modifications.
| Brand | Schaller |
| Model | M6 90 |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Housing Type | Sealed and Permanently Lubricated |
| Post Material | Brass |
| Manufacturing | Precision CNC-Machined |
| Button Bore Hole | Diameter 0.17 in with 0.14 in driving surface |
| Stepped Flanged Washer Base Diameter | 0.39 in |
| Mounting Screws Included | 6 x M2.2 x 9.5 |
| Product Weight | 0.79 lb |
