Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry standard for enclosed tuners, featuring an advanced 1:18 gear ratio that provides velvety-smooth precision and exceptional tuning stability. Every component is CNC-machined to exacting tolerances and treated with a high-grade surface finish, while precision-fitted brass string posts and a self-locking drive ensure reliable, wear-free performance.
Installation is streamlined thanks to the innovative stepped M6 flanged washer, which centers the string post securely through a standard 10 mm (0.39 in) peghead bore without requiring counterbore drilling. This design distributes mechanical pressure evenly away from both the string post and rear mounting screws to eliminate tilting torque completely.
Permanently lubricated with Schaller special grease, these enclosed tuning machines remain completely maintenance-free throughout their lifespan. Designed to share identical mounting dimensions with predecessor models, they allow for seamless drop-in upgrades without headstock modifications.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Bore Diameter (Button) | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Single Tuner (Small / Large Button) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) |
| Product Weight | 0.79 lb |
| Lubrication | Permanently lubricated with Schaller special grease |
