Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 series sets an industry standard with its refined 1:18 gear ratio, delivering smooth, velvet-like operation and precise tuning stability. Every component is CNC-machined to exacting tolerances and treated with high-grade surface finishing, ensuring a self-locking mechanism that remains consistent and sensitive across performances.
Crafted with premium brass string posts precision-fitted into the housing, these tuning machines provide maximum wear resistance and enduring stability. The integrated stepped M6 flanged washer reliably centers the string post via the banjo bolt, preventing tilting moments and taking pressure off both the post and rear mounting screw without requiring stepped headstock drilling.
Featuring permanently sealed lubrication with Schaller specialized grease, these enclosed tuners offer completely maintenance-free functionality. The M6 135 shares identical mounting dimensions with its predecessor, allowing straightforward replacement on standard headstocks without structural modifications.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.3 oz / 1.3 oz), Pearloid (1.1 oz / 1.1 oz), Ebony (1.1 oz / 1.1 oz) including Banjo Bolt |
| Button Hole Bore | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Mounting Screw Size | M2.2 x 0.37 in (9.5 mm) |
| Stepped Washer Diameter | 0.39 in (10 mm) |
| Weight | 0.13 lb |
