Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision engineering and tuning stability, featuring an improved 1:18 gear ratio for smooth, accurate adjustments. Originally setting the global benchmark for closed tuners in 1966, this updated design combines time-tested reliability with modern mechanical innovations.
Each component is CNC-machined to exact tolerances with surface-treated finishes, and the high-grade brass string posts are precisely fitted into the housing to eliminate wear and backlash. The internal mechanism is permanently lubricated with specialized grease, delivering maintenance-free performance and consistent resistance.
Featuring the innovative stepped flanged washer, this tuner centers the string post without requiring stepped headstock boreholes and relieves stress on the rear mounting screw. Sharing identical mounting dimensions with its predecessor, it serves as a seamless, modification-free upgrade or replacement for standard headstocks.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Post Material | Brass |
| Housing Type | Sealed / Closed |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| 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) |
| Lubrication | Permanently lubricated with Schaller special grease |
