Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets a benchmark for closed-type tuners, delivering unmatched precision and exceptional tuning comfort. Featuring a refined 1:18 gear ratio, this model ensures a velvety-smooth and highly accurate tuning experience across all playing conditions.
Crafted with precision CNC-machined components and high-grade brass string posts, the M6 135 offers superior wear resistance and long-lasting tuning stability. The self-locking internal drive mechanism and maintenance-free permanent lubrication ensure reliable, backlash-free performance over years of play.
Installation is straightforward thanks to identical mounting dimensions with legacy models and the innovative stepped M6 flanged washer. This specialized collar accurately centers the string post via the banjo bolt, eliminating the need for stepped headstock drilling and protecting internal components from lateral strain.
| SKU | 10020271.03.55 |
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| 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 hollow screw |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| String Post Material | Brass |
| Lubrication | Maintenance-free Schaller Special Grease |
| Mounting Washer Type | Stepped M6 Flanged Washer |
| Product Weight | 0.13 lb |


















