Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision and tuning comfort with an upgraded 1:18 gear ratio. All components are CNC-machined, surface-finished, and designed with a self-locking drive to provide smooth, responsive, and stable tuning.
Featuring high-grade brass string posts engineered for wear-free durability, this enclosed tuner is permanently lubricated with Schaller special grease for completely maintenance-free operation.
The innovative stepped M6 flanged washer reliably centers the string post without requiring a stepped peghead bore, eliminating tilting torque and protecting mounting components. With identical installation dimensions to its predecessor, it serves as a direct drop-in replacement.
| Brand | Schaller |
| Product Line | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Single Tuner Weight with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Weight | 0.13 lb |
| Lubrication | Schaller Special Grease (Maintenance-Free) |




















