Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 Guitar Tuning Machine delivers exceptional tuning accuracy and stability with its refined 1:18 gear ratio. Designed to preserve the legacy of the original 1966 closed-gear design, this modernized iteration features CNC-machined components and self-locking drive mechanisms for smooth, consistent operation.
Engineered with precision-fitted brass posts and permanently lubricated with proprietary Schaller grease, these enclosed tuning machines remain completely maintenance-free. The innovative stepped M6 flanged washer reliably centers the string post through the banjo bolt without requiring stepped peghead drilling, eliminating tilt torque and protecting mounting hardware.
Featuring the exact installation dimensions of its predecessor model, the M6 135 allows direct, modification-free retrofitting on compatible guitar headstocks. Each set includes matching banjo bolts, flanged washers, and M2.2 x 9.5 mm mounting screws for complete installation.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Mounting Screw Size | M2.2 x 9.5 |
| Weight per Single Tuner (Metal) | 0.08 lb (36 g) / 0.08 lb (38 g) |
| Weight per Single Tuner (Perloid / Ebony) | 0.07 lb (30 g) / 0.07 lb (31 g) |
| Product Weight | 0.79 lb |
