Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an upgraded 1:18 gear ratio. All components are CNC-machined to exact tolerances and permanently lubricated with Schaller special grease for maintenance-free operation and exceptional durability.
Equipped with high-grade brass string posts accurately fitted into the housing, this machine head ensures maximum tuning stability and wear resistance. The innovative stepped M6 flanged washer centers the string post securely through the hollow screw, eliminating tilt torque and protecting headstock holes without requiring stepped drilling.
Featuring the exact same installation dimensions as its classic predecessor, the M6 90 offers seamless drop-in replacement on existing instruments. Precision engineering and self-locking drive mechanics guarantee sensitive, uniform, and reliable tuning performance across all configurations.
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including hollow screw |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| String Post Material | Brass |
| Weight | 0.79 lb |
