Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets the benchmark for enclosed guitar tuning machines, combining historic design heritage with modern precision engineering. Built with an improved 1:18 gear ratio, it delivers exceptionally smooth and precise tuning action for unmatched stability and control.
Every component is CNC-machined to exacting tolerances, featuring high-grade brass string posts engineered for wear-free durability. The self-locking drive and internal permanent lubrication with specialized grease ensure reliable, completely maintenance-free operation over extended playing periods.
Featuring the innovative stepped flanged washer, this tuning machine automatically centers the string post via the banjo bolt, eliminating the need for stepped headstock drilling and protecting mounting hardware from lateral strain.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Lubrication | Permanent specialized grease lubrication |
| Weight | 0.13 lb |
| Weight per Single Tuner with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Pearloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with flat drive 0.14 in (3.6 mm) |
