Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for enclosed tuners, featuring an upgraded 1:18 gear ratio that provides ultra-precise, velvety-smooth tuning comfort and exceptional stability. Each component is CNC-machined to precise tolerances, finished to perfection, and driven by a self-locking mechanism to guarantee consistent operation.
Engineered for maximum durability, all string posts are crafted from high-grade brass and fitted seamlessly into the housing to ensure wear-free longevity. Every enclosed unit is lubricated for life with specialized Schaller grease, offering completely maintenance-free performance under all playing conditions.
Installation is straightforward thanks to identical mounting dimensions with legacy models and the innovative stepped M6 flanged washer. This washer reliably centers the string post without requiring stepped headstock drilling, effectively eliminating tilt momentum and taking mechanical stress off both the post and mounting screw.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | High-Grade Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.13 lb |
| Weight per Single Unit (Small / Large Button) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Mounting Type | Solid Headstock / Slotted Headstock compatible |
| Lubrication | Permanently lubricated with Schaller special grease |




















