Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision engineering and reliable tuning stability with its refined 1:18 gear ratio. All components are CNC-machined to high tolerances and surface-finished, featuring self-locking drive mechanisms that facilitate smooth, delicate, and stable tuning performance.
Crafted with premium brass string posts precisely fitted into the housing, these tuners deliver long-lasting wear resistance and tuning accuracy. The sealed construction is permanently lubricated with Schaller special grease for maintenance-free operation over extended use.
Featuring the innovative stepped M6 flanged washer, this system centers the string post securely via the banjonut and removes lateral torque without requiring stepped peghead bore holes. Designed with the exact mounting dimensions of its classic predecessor, it allows seamless installation and upgrades on standard guitar headstocks.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive surface |
| Weight per Single Tuner with Button (Small / Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.79 lb |




















