Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry standard for enclosed tuners, featuring an upgraded 1:18 gear ratio that provides ultra-precise, velvety-smooth tuning action and exceptional pitch stability. Every component is CNC-machined to exact tolerances and permanently lubricated with Schaller special grease for completely maintenance-free operation.
Equipped with high-grade brass string posts engineered precisely into the housing, these tuners eliminate wear while maximizing tuning retention. The innovative stepped M6 flanged washer reliably centers the string post through the banjonut, doing away with the need for stepped headstock drilling and removing lateral tilting strain from both the post and mounting screw.
Featuring the exact installation footprint of its classic predecessor, the M6 135 enables direct, drop-in replacement without instrument modifications. Each set includes mounting screws and flanged washers for straightforward and secure headstock installation.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Lubrication | Permanent Special Grease |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Single Tuner Weight (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 |
| Mounting Screws Included | M2.2 x 9.5 |


















