Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a benchmark in guitar tuning with an advanced 1:18 gear ratio, delivering unmatched precision and exceptionally smooth operation. Designed to match the installation dimensions of its predecessor, it allows for direct replacement without any instrument modifications.
Every component is CNC-machined to precise tolerances and surface-finished for consistent performance. High-grade brass string posts are fitted into the sealed housing with permanent lubrication, providing maintenance-free reliability and superior tuning stability.
An innovative stepped flanged washer centers the string post accurately through the hollow screw, removing pressure from the mounting screw and preventing tilt without requiring stepped peghead drilling.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight with Button per Single Tuner (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 Borehole | Diameter 0.17 in with 0.14 in drive flat |
| Product Weight | 0.13 lb |
| String Post Material | Brass |
| Lubrication | Schaller Special Grease (Permanent) |
