Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an improved 1:18 gear ratio. Designed as an evolution of the legendary original sealed tuning machine established in 1966, it incorporates state-of-the-art engineering while preserving classic reliability and performance.
Each component is CNC-machined to high tolerances, surface-finished, and equipped with a self-locking drive mechanism for velvety smooth and stable operation. Premium brass string posts are precisely fitted into the housing, ensuring long-term wear resistance and superior tuning stability across all playing conditions.
Featuring an innovative stepped flanged washer, this tuning machine reliably centers the string post without requiring a stepped headstock bore, effectively eliminating tilting moments and relieving mechanical stress. All enclosed housings are permanently lubricated with Schaller special grease for completely maintenance-free functionality.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.8 lb |
| Weight per Tuner (Small/Large Button) | 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 Bore Diameter | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Post Material | Brass |
| Lubrication | Maintenance-free Schaller special grease |




















