Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an improved 1:18 gear ratio. Continuing the legacy of the original sealed tuner standard introduced in 1966, this updated model incorporates advanced engineering and modern refinements while maintaining classic aesthetics.
Each component is CNC-machined to exacting tolerances and surface-finished, utilizing high-grade brass posts fitted seamlessly into the housing for maximum tuning stability and wear resistance. The sealed mechanism is permanently lubricated with Schaller special grease to provide a completely maintenance-free operation and ultra-smooth turning action.
Featuring the innovative stepped M6 flanged washer, this design centers the string post securely without requiring a stepped peghead bore, eliminating tilting torque and reducing stress on mounting components. With identical installation dimensions to its predecessor, it serves as a seamless drop-in replacement.
| Brand | Schaller |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Weight | 0.13 lb |
| Weight per Single Tuner 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 banjo bolt |
| Button Borehole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| String Post Material | High-Grade Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
