Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 represents the pinnacle of closed tuning machine engineering, delivering flawless performance with an upgraded 1:18 gear ratio for exceptionally precise and smooth tuning. Built upon the legendary design that set the global benchmark in 1966, this modern iteration incorporates advanced refinements while maintaining classic reliability.
Every component is precision CNC-machined and finished for premium operation, utilizing high-grade brass string posts meticulously fitted into the housing to ensure optimal tuning stability and zero wear. The internal mechanism features a self-locking drive and is permanently lubricated with Schaller special grease for completely maintenance-free longevity.
Featuring the innovative stepped M6 collar washer with a 0.39 in (10 mm) base diameter, this design eliminates the need for stepped peghead bore holes and removes tilt torque from the string post and rear mounting screw. With identical mounting dimensions to its predecessor, it serves as a seamless, direct-fit replacement for existing instruments.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 90 |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Single Tuner (Metal Button) | 0.08 lb (36 g) / 0.08 lb (38 g) |
| Weight per Single Tuner (Perloid Button) | 0.07 lb (30 g) / 0.07 lb (31 g) |
| Weight per Single Tuner (Ebony Button) | 0.07 lb (30 g) / 0.07 lb (31 g) |
| Product Weight | 0.79 lb |
